X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=libstdc%2B%2B-v3%2Fconfigure;h=2d5016a374a316b1570db8a2ed55d538c7171773;hb=123fdbbde485e647560f139ffe4732ca75e6c366;hp=7d1e55db2aa0fe4c1f385168d05095b26b203a81;hpb=3d84907c48c5bb9aa360da1dc41e01f7d69c6ee5;p=pf3gnuchains%2Fgcc-fork.git

diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 7d1e55db2aa..2d5016a374a 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -309,7 +309,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS libtool_VERSION multi_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO AMTAR install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot glibcxx_builddir glibcxx_srcdir toplevel_srcdir CC ac_ct_CC EXEEXT OBJEXT CXX ac_ct_CXX CFLAGS CXXFLAGS LN_S AS ac_ct_AS AR ac_ct_AR RANLIB ac_ct_RANLIB MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT LIBTOOL CXXCPP CPPFLAGS enable_shared enable_static GLIBCXX_HOSTED_TRUE GLIBCXX_HOSTED_FALSE GLIBCXX_BUILD_PCH_TRUE GLIBCXX_BUILD_PCH_FALSE glibcxx_PCHFLAGS CSTDIO_H BASIC_FILE_H BASIC_FILE_CC CPP EGREP check_msgfmt glibcxx_MOFILES glibcxx_POFILES glibcxx_localedir USE_NLS CLOCALE_H CCODECVT_H CMESSAGES_H CCODECVT_CC CCOLLATE_CC CCTYPE_CC CMESSAGES_CC CMONEY_CC CNUMERIC_CC CTIME_H CTIME_CC CLOCALE_CC CLOCALE_INTERNAL_H ALLOCATOR_H ALLOCATOR_NAME C_INCLUDE_DIR GLIBCXX_C_HEADERS_C_TRUE GLIBCXX_C_HEADERS_C_FALSE GLIBCXX_C_HEADERS_C_STD_TRUE GLIBCXX_C_HEADERS_C_STD_FALSE GLIBCXX_C_HEADERS_COMPATIBILITY_TRUE GLIBCXX_C_HEADERS_COMPATIBILITY_FALSE glibcxx_thread_h DEBUG_FLAGS GLIBCXX_BUILD_DEBUG_TRUE GLIBCXX_BUILD_DEBUG_FALSE EXTRA_CXX_FLAGS WERROR SECTION_FLAGS SECTION_LDFLAGS OPT_LDFLAGS LIBMATHOBJS LIBICONV SYMVER_MAP port_specific_symbol_files GLIBCXX_BUILD_VERSIONED_SHLIB_TRUE GLIBCXX_BUILD_VERSIONED_SHLIB_FALSE baseline_dir GLIBCXX_TEST_WCHAR_T_TRUE GLIBCXX_TEST_WCHAR_T_FALSE GLIBCXX_TEST_ABI_TRUE GLIBCXX_TEST_ABI_FALSE ATOMICITY_SRCDIR ATOMIC_WORD_SRCDIR ABI_TWEAKS_SRCDIR OS_INC_SRCDIR glibcxx_prefixdir gxx_include_dir glibcxx_toolexecdir glibcxx_toolexeclibdir GLIBCXX_INCLUDES TOPLEVEL_INCLUDES OPTIMIZE_CXXFLAGS WARN_FLAGS LIBSUPCXX_PICFLAGS LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS libtool_VERSION multi_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar glibcxx_builddir glibcxx_srcdir toplevel_srcdir CC ac_ct_CC EXEEXT OBJEXT CXX ac_ct_CXX CFLAGS CXXFLAGS LN_S AS ac_ct_AS AR ac_ct_AR RANLIB ac_ct_RANLIB MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT LIBTOOL CXXCPP CPPFLAGS enable_shared enable_static GLIBCXX_HOSTED_TRUE GLIBCXX_HOSTED_FALSE GLIBCXX_BUILD_PCH_TRUE GLIBCXX_BUILD_PCH_FALSE glibcxx_PCHFLAGS CSTDIO_H BASIC_FILE_H BASIC_FILE_CC CPP EGREP check_msgfmt glibcxx_MOFILES glibcxx_POFILES glibcxx_localedir USE_NLS CLOCALE_H CMESSAGES_H CCODECVT_CC CCOLLATE_CC CCTYPE_CC CMESSAGES_CC CMONEY_CC CNUMERIC_CC CTIME_H CTIME_CC CLOCALE_CC CLOCALE_INTERNAL_H ALLOCATOR_H ALLOCATOR_NAME C_INCLUDE_DIR GLIBCXX_C_HEADERS_C_TRUE GLIBCXX_C_HEADERS_C_FALSE GLIBCXX_C_HEADERS_C_STD_TRUE GLIBCXX_C_HEADERS_C_STD_FALSE GLIBCXX_C_HEADERS_COMPATIBILITY_TRUE GLIBCXX_C_HEADERS_COMPATIBILITY_FALSE glibcxx_thread_h DEBUG_FLAGS GLIBCXX_BUILD_DEBUG_TRUE GLIBCXX_BUILD_DEBUG_FALSE EXTRA_CXX_FLAGS WERROR SECTION_FLAGS SECTION_LDFLAGS OPT_LDFLAGS LIBMATHOBJS LIBICONV SYMVER_MAP port_specific_symbol_files GLIBCXX_BUILD_VERSIONED_SHLIB_TRUE GLIBCXX_BUILD_VERSIONED_SHLIB_FALSE baseline_dir GLIBCXX_TEST_WCHAR_T_TRUE GLIBCXX_TEST_WCHAR_T_FALSE GLIBCXX_TEST_THREAD_TRUE GLIBCXX_TEST_THREAD_FALSE GLIBCXX_TEST_ABI_TRUE GLIBCXX_TEST_ABI_FALSE ATOMICITY_SRCDIR ATOMIC_WORD_SRCDIR ABI_TWEAKS_SRCDIR OS_INC_SRCDIR glibcxx_prefixdir gxx_include_dir glibcxx_toolexecdir glibcxx_toolexeclibdir GLIBCXX_INCLUDES TOPLEVEL_INCLUDES OPTIMIZE_CXXFLAGS WARN_FLAGS LIBSUPCXX_PICFLAGS LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -884,6 +884,9 @@ Optional Features:
   --enable-cxx-flags=FLAGS
                           pass compiler FLAGS when building library
                           [default=]
+  --enable-fully-dynamic-string
+                          do not put empty strings in per-process static
+                          memory [default=no]
   --enable-symvers=STYLE  enables symbol versioning of the shared library
                           [default=yes]
   --enable-version-specific-runtime-libs
@@ -1373,7 +1376,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 ### am handles this now?  ORIGINAL_LD_FOR_MULTILIBS=$LD
 
 # For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=6:2:0
+libtool_VERSION=6:4:0
 
 
 # Find the rest of the source tree framework.
@@ -1555,7 +1558,7 @@ fi
 #  no-dependencies:  turns off auto dependency generation (just for now)
 #  -Wall:  turns on all automake warnings...
 #  -Wno-portability:  ...except this one, since GNU make is now required.
-am__api_version="1.8"
+am__api_version="1.9"
 # Find a good install program.  We prefer a C program (faster),
 # so one script is as good as another.  But avoid the broken or
 # incompatible versions:
@@ -1707,13 +1710,21 @@ echo "$as_me: WARNING: \`missing' script is too old or missing" >&2;}
 fi
 
 if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
-  # Keeping the `.' argument allows $(mkdir_p) to be used without
-  # argument.  Indeed, we sometimes output rules like
+  # We used to keeping the `.' as first argument, in order to
+  # allow $(mkdir_p) to be used without argument.  As in
   #   $(mkdir_p) $(somedir)
-  # where $(somedir) is conditionally defined.
-  # (`test -n '$(somedir)' && $(mkdir_p) $(somedir)' is a more
-  # expensive solution, as it forces Make to start a sub-shell.)
-  mkdir_p='mkdir -p -- .'
+  # where $(somedir) is conditionally defined.  However this is wrong
+  # for two reasons:
+  #  1. if the package is installed by a user who cannot write `.'
+  #     make install will fail,
+  #  2. the above comment should most certainly read
+  #     $(mkdir_p) $(DESTDIR)$(somedir)
+  #     so it does not work when $(somedir) is undefined and
+  #     $(DESTDIR) is not.
+  #  To support the latter case, we have to write
+  #     test -z "$(somedir)" || $(mkdir_p) $(DESTDIR)$(somedir),
+  #  so the `.' trick is pointless.
+  mkdir_p='mkdir -p --'
 else
   # On NextStep and OpenStep, the `mkdir' command does not
   # recognize any option.  It will interpret all options as
@@ -1848,9 +1859,6 @@ AUTOHEADER=${AUTOHEADER-"${am_missing_run}autoheader"}
 
 MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
 
-
-AMTAR=${AMTAR-"${am_missing_run}tar"}
-
 install_sh=${install_sh-"$am_aux_dir/install-sh"}
 
 # Installed binaries are usually stripped using `strip' when the user
@@ -1943,6 +1951,13 @@ INSTALL_STRIP_PROGRAM="\${SHELL} \$(install_sh) -c -s"
 
 # We need awk for the "check" target.  The system "awk" is bad on
 # some platforms.
+# Always define AMTAR for backward compatibility.
+
+AMTAR=${AMTAR-"${am_missing_run}tar"}
+
+am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'
+
+
 
 
 
@@ -3980,14 +3995,7 @@ irix5* | irix6*)
 
 # This must be Linux ELF.
 linux-gnu*)
-  case $host_cpu in
-  alpha* | mips* | hppa* | i*86 | powerpc* | sparc* | ia64* | sh* )
-    lt_cv_deplibs_check_method=pass_all ;;
-  *)
-    # glibc up to 2.1.1 does not perform some relocations on ARM
-    lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )' ;;
-  esac
-  lt_cv_file_magic_test_file=`echo /lib/libc.so* /lib/libc-*.so`
+  lt_cv_deplibs_check_method=pass_all
   ;;
 
 netbsd* | knetbsd*-gnu)
@@ -4382,7 +4390,7 @@ test x"$pic_mode" = xno && libtool_flags="$libtool_flags --prefer-non-pic"
 case $host in
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 4385 "configure"' > conftest.$ac_ext
+  echo '#line 4393 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -5003,7 +5011,7 @@ fi;
     #
     # Fake what AC_TRY_COMPILE does.  XXX Look at redoing this new-style.
     cat > conftest.$ac_ext << EOF
-#line 5006 "configure"
+#line 5014 "configure"
 struct S { ~S(); };
 void bar();
 void foo()
@@ -5774,6 +5782,9 @@ fi
 
         # ... at some point put __strxfrm_l tests in as well.
         ;;
+      darwin* | freebsd*)
+        enable_clocale_flag=darwin
+	;;
       *)
         enable_clocale_flag=generic
         ;;
@@ -5800,7 +5811,6 @@ echo "${ECHO_T}generic" >&6
 
       CLOCALE_H=config/locale/generic/c_locale.h
       CLOCALE_CC=config/locale/generic/c_locale.cc
-      CCODECVT_H=config/locale/generic/codecvt_specializations.h
       CCODECVT_CC=config/locale/generic/codecvt_members.cc
       CCOLLATE_CC=config/locale/generic/collate_members.cc
       CCTYPE_CC=config/locale/generic/ctype_members.cc
@@ -5812,6 +5822,24 @@ echo "${ECHO_T}generic" >&6
       CTIME_CC=config/locale/generic/time_members.cc
       CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
       ;;
+    darwin)
+      echo "$as_me:$LINENO: result: darwin or freebsd" >&5
+echo "${ECHO_T}darwin or freebsd" >&6
+
+      CLOCALE_H=config/locale/generic/c_locale.h
+      CLOCALE_CC=config/locale/generic/c_locale.cc
+      CCODECVT_CC=config/locale/generic/codecvt_members.cc
+      CCOLLATE_CC=config/locale/generic/collate_members.cc
+      CCTYPE_CC=config/locale/darwin/ctype_members.cc
+      CMESSAGES_H=config/locale/generic/messages_members.h
+      CMESSAGES_CC=config/locale/generic/messages_members.cc
+      CMONEY_CC=config/locale/generic/monetary_members.cc
+      CNUMERIC_CC=config/locale/generic/numeric_members.cc
+      CTIME_H=config/locale/generic/time_members.h
+      CTIME_CC=config/locale/generic/time_members.cc
+      CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
+      ;;
+
     gnu)
       echo "$as_me:$LINENO: result: gnu" >&5
 echo "${ECHO_T}gnu" >&6
@@ -5871,7 +5899,6 @@ fi
 
       CLOCALE_H=config/locale/gnu/c_locale.h
       CLOCALE_CC=config/locale/gnu/c_locale.cc
-      CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
       CCODECVT_CC=config/locale/gnu/codecvt_members.cc
       CCOLLATE_CC=config/locale/gnu/collate_members.cc
       CCTYPE_CC=config/locale/gnu/ctype_members.cc
@@ -5889,7 +5916,6 @@ echo "${ECHO_T}IEEE 1003.1" >&6
 
       CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
       CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
-      CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
       CCODECVT_CC=config/locale/generic/codecvt_members.cc
       CCOLLATE_CC=config/locale/generic/collate_members.cc
       CCTYPE_CC=config/locale/generic/ctype_members.cc
@@ -6223,7 +6249,6 @@ _ACEOF
 
 
 
-
   echo "$as_me:$LINENO: checking for std::allocator base class to use" >&5
 echo $ECHO_N "checking for std::allocator base class to use... $ECHO_C" >&6
    # Check whether --enable-libstdcxx-allocator or --disable-libstdcxx-allocator was given.
@@ -6343,6 +6368,7 @@ fi;
 
 
 
+
    # Check whether --enable-c99 or --disable-c99 was given.
 if test "${enable_c99+set}" = set; then
   enableval="$enable_c99"
@@ -6922,24 +6948,34 @@ _ACEOF
 
   fi
 
-  # Check for the existence in <stdio.h> of vscanf, et. al.
-  ac_c99_stdio=yes;
-  echo "$as_me:$LINENO: checking for ISO C99 support in <stdio.h>" >&5
-echo $ECHO_N "checking for ISO C99 support in <stdio.h>... $ECHO_C" >&6
-  cat >conftest.$ac_ext <<_ACEOF
+  # Check for the existence of <complex.h> complex functions.
+  # This is necessary even though libstdc++ uses the builtin versions
+  # of these functions, because if the builtin cannot be used, a reference
+  # to the library function is emitted.
+
+for ac_header in complex.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdio.h>
-int
-main ()
-{
-snprintf("12", 0, "%i");
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -6963,78 +6999,128 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  :
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdio=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdio.h>
-                  #include <stdarg.h>
-                  void foo(char* fmt, ...)
-                  {va_list args; va_start(args, fmt);
-                  vfscanf(stderr, "%i", args);}
-int
-main ()
-{
-
-  ;
-  return 0;
-}
+#include <$ac_header>
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  :
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_cxx_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_cxx_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdio=no
+  ac_header_preproc=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+ ac_has_complex_h=yes
+else
+  ac_has_complex_h=no
+fi
+
+done
+
+  ac_c99_complex=no;
+  if test x"$ac_has_complex_h" = x"yes"; then
+    ac_c99_complex=yes;
+    echo "$as_me:$LINENO: checking for ISO C99 support in <complex.h>" >&5
+echo $ECHO_N "checking for ISO C99 support in <complex.h>... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdio.h>
-                  #include <stdarg.h>
-                  void foo(char* fmt, ...)
-                  {va_list args; va_start(args, fmt);
-                  vscanf("%i", args);}
+#include <complex.h>
 int
 main ()
 {
-
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+	            cabsf(tmp);
   ;
   return 0;
 }
@@ -7066,24 +7152,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdio=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdio.h>
-                  #include <stdarg.h>
-                  void foo(char* fmt, ...)
-                  {va_list args; va_start(args, fmt);
-                  vsnprintf(fmt, 0, "%i", args);}
+#include <complex.h>
 int
 main ()
 {
-
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    cabs(tmp);
   ;
   return 0;
 }
@@ -7115,24 +7198,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdio=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdio.h>
-                  #include <stdarg.h>
-                  void foo(char* fmt, ...)
-                  {va_list args; va_start(args, fmt);
-                  vsscanf(fmt, "%i", args);}
+#include <complex.h>
 int
 main ()
 {
-
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    cabsl(tmp);
   ;
   return 0;
 }
@@ -7164,31 +7244,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdio=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  echo "$as_me:$LINENO: result: $ac_c99_stdio" >&5
-echo "${ECHO_T}$ac_c99_stdio" >&6
-
-  # Check for the existence in <stdlib.h> of lldiv_t, et. al.
-  ac_c99_stdlib=yes;
-  echo "$as_me:$LINENO: checking for lldiv_t declaration" >&5
-echo $ECHO_N "checking for lldiv_t declaration... $ECHO_C" >&6
-  if test "${ac_c99_lldiv_t+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <complex.h>
 int
 main ()
 {
- lldiv_t mydivt;
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+                    cargf(tmp);
   ;
   return 0;
 }
@@ -7215,33 +7285,26 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_c99_lldiv_t=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_lldiv_t=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-
-fi
-
-  echo "$as_me:$LINENO: result: $ac_c99_lldiv_t" >&5
-echo "${ECHO_T}$ac_c99_lldiv_t" >&6
-
-  echo "$as_me:$LINENO: checking for ISO C99 support in <stdlib.h>" >&5
-echo $ECHO_N "checking for ISO C99 support in <stdlib.h>... $ECHO_C" >&6
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <complex.h>
 int
 main ()
 {
-char* tmp; strtof("gnu", &tmp);
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    carg(tmp);
   ;
   return 0;
 }
@@ -7273,20 +7336,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdlib=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <complex.h>
 int
 main ()
 {
-char* tmp; strtold("gnu", &tmp);
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    cargl(tmp);
   ;
   return 0;
 }
@@ -7318,20 +7382,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdlib=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <complex.h>
 int
 main ()
 {
-llabs(10);
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+		    ccosf(tmp);
   ;
   return 0;
 }
@@ -7363,20 +7428,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdlib=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <complex.h>
 int
 main ()
 {
-lldiv(10,1);
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    ccos(tmp);
   ;
   return 0;
 }
@@ -7408,20 +7474,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdlib=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <complex.h>
 int
 main ()
 {
-atoll("10");
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    ccosl(tmp);
   ;
   return 0;
 }
@@ -7453,20 +7520,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdlib=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <complex.h>
 int
 main ()
 {
-_Exit(0);
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+		    ccoshf(tmp);
   ;
   return 0;
 }
@@ -7498,31 +7566,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_stdlib=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  if test x"$ac_c99_lldiv_t" = x"no"; then
-    ac_c99_stdlib=no;
-  fi;
-  echo "$as_me:$LINENO: result: $ac_c99_stdlib" >&5
-echo "${ECHO_T}$ac_c99_stdlib" >&6
-
-  # Check for the existence of <wchar.h> functions used if C99 is enabled.
-  # XXX the wchar.h checks should be rolled into the general C99 bits.
-  ac_c99_wchar=yes;
-  echo "$as_me:$LINENO: checking for additional ISO C99 support in <wchar.h>" >&5
-echo $ECHO_N "checking for additional ISO C99 support in <wchar.h>... $ECHO_C" >&6
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <wchar.h>
+#include <complex.h>
 int
 main ()
 {
-wcstold(L"10.0", NULL);
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    ccosh(tmp);
   ;
   return 0;
 }
@@ -7554,20 +7612,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_wchar=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <wchar.h>
+#include <complex.h>
 int
 main ()
 {
-wcstoll(L"10", NULL, 10);
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    ccoshl(tmp);
   ;
   return 0;
 }
@@ -7599,20 +7658,21 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_wchar=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <wchar.h>
+#include <complex.h>
 int
 main ()
 {
-wcstoull(L"10", NULL, 10);
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+		    cexpf(tmp);
   ;
   return 0;
 }
@@ -7644,253 +7704,116 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_c99_wchar=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  echo "$as_me:$LINENO: result: $ac_c99_wchar" >&5
-echo "${ECHO_T}$ac_c99_wchar" >&6
-
-  echo "$as_me:$LINENO: checking for enabled ISO C99 support" >&5
-echo $ECHO_N "checking for enabled ISO C99 support... $ECHO_C" >&6
-  if test x"$ac_c99_math" = x"no" ||
-     test x"$ac_c99_stdio" = x"no" ||
-     test x"$ac_c99_stdlib" = x"no" ||
-     test x"$ac_c99_wchar" = x"no"; then
-    enable_c99=no;
-  fi;
-  echo "$as_me:$LINENO: result: $enable_c99" >&5
-echo "${ECHO_T}$enable_c99" >&6
-
-  if test x"$ac_99_math" = x"yes"; then
-    cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_C99_MATH 1
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
-
-  fi
-
-  # Option parsed, now set things appropriately
-  if test x"$enable_c99" = x"yes"; then
-    cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_C99 1
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <complex.h>
+int
+main ()
+{
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    cexp(tmp);
+  ;
+  return 0;
+}
 _ACEOF
-
-  fi
-
-  ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-
-   # Check whether --enable-long-long or --disable-long-long was given.
-if test "${enable_long_long+set}" = set; then
-  enableval="$enable_long_long"
-
-      case "$enableval" in
-       yes|no) ;;
-       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable long-long must be yes or no" >&5
-echo "$as_me: error: Argument to enable/disable long-long must be yes or no" >&2;}
-   { (exit 1); exit 1; }; } ;;
-      esac
-
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
 else
-  enable_long_long=yes
-fi;
-
-  if test $enable_long_long = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_LONG_LONG 1
-_ACEOF
-
-  fi
-
-
-  echo "$as_me:$LINENO: checking for thread model used by GCC" >&5
-echo $ECHO_N "checking for thread model used by GCC... $ECHO_C" >&6
-  target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
-  echo "$as_me:$LINENO: result: $target_thread_file" >&5
-echo "${ECHO_T}$target_thread_file" >&6
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-  if test $target_thread_file != single; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_GTHR_DEFAULT 1
+ac_c99_complex=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
-
-  fi
-
-  glibcxx_thread_h=gthr-$target_thread_file.h
-
-
-
-   # Check whether --enable-concept-checks or --disable-concept-checks was given.
-if test "${enable_concept_checks+set}" = set; then
-  enableval="$enable_concept_checks"
-
-      case "$enableval" in
-       yes|no) ;;
-       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable concept-checks must be yes or no" >&5
-echo "$as_me: error: Argument to enable/disable concept-checks must be yes or no" >&2;}
-   { (exit 1); exit 1; }; } ;;
-      esac
-
-else
-  enable_concept_checks=no
-fi;
-
-  if test $enable_concept_checks = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_CONCEPT_CHECKS 1
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <complex.h>
+int
+main ()
+{
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    cexpl(tmp);
+  ;
+  return 0;
+}
 _ACEOF
-
-  fi
-
-
-   # Check whether --enable-libstdcxx-debug-flags or --disable-libstdcxx-debug-flags was given.
-if test "${enable_libstdcxx_debug_flags+set}" = set; then
-  enableval="$enable_libstdcxx_debug_flags"
-  case "x$enable_libstdcxx_debug_flags" in
-      xno | x)    enable_libstdcxx_debug_flags= ;;
-      x-*)        ;;
-      *)          { { echo "$as_me:$LINENO: error: --enable-libstdcxx-debug-flags needs compiler flags as arguments" >&5
-echo "$as_me: error: --enable-libstdcxx-debug-flags needs compiler flags as arguments" >&2;}
-   { (exit 1); exit 1; }; } ;;
-     esac
-else
-  enable_libstdcxx_debug_flags="-g3 -O0"
-fi;
-
-
-  # Option parsed, now set things appropriately
-  DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
-
-
-  { echo "$as_me:$LINENO: Debug build flags set to $DEBUG_FLAGS" >&5
-echo "$as_me: Debug build flags set to $DEBUG_FLAGS" >&6;}
-
-
-  echo "$as_me:$LINENO: checking for additional debug build" >&5
-echo $ECHO_N "checking for additional debug build... $ECHO_C" >&6
-   # Check whether --enable-libstdcxx-debug or --disable-libstdcxx-debug was given.
-if test "${enable_libstdcxx_debug+set}" = set; then
-  enableval="$enable_libstdcxx_debug"
-
-      case "$enableval" in
-       yes|no) ;;
-       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable libstdcxx-debug must be yes or no" >&5
-echo "$as_me: error: Argument to enable/disable libstdcxx-debug must be yes or no" >&2;}
-   { (exit 1); exit 1; }; } ;;
-      esac
-
-else
-  enable_libstdcxx_debug=no
-fi;
-
-  echo "$as_me:$LINENO: result: $enable_libstdcxx_debug" >&5
-echo "${ECHO_T}$enable_libstdcxx_debug" >&6
-
-
-  echo "$as_me:$LINENO: checking for extra compiler flags for building" >&5
-echo $ECHO_N "checking for extra compiler flags for building... $ECHO_C" >&6
-   # Check whether --enable-cxx-flags or --disable-cxx-flags was given.
-if test "${enable_cxx_flags+set}" = set; then
-  enableval="$enable_cxx_flags"
-  case "x$enable_cxx_flags" in
-      xno | x)   enable_cxx_flags= ;;
-      x-*)       ;;
-      *)         { { echo "$as_me:$LINENO: error: --enable-cxx-flags needs compiler flags as arguments" >&5
-echo "$as_me: error: --enable-cxx-flags needs compiler flags as arguments" >&2;}
-   { (exit 1); exit 1; }; } ;;
-     esac
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
 else
-  enable_cxx_flags=
-fi;
-
-
-  # Run through flags (either default or command-line) and set anything
-  # extra (e.g., #defines) that must accompany particular g++ options.
-  if test -n "$enable_cxx_flags"; then
-    for f in $enable_cxx_flags; do
-      case "$f" in
-        -fhonor-std)  ;;
-        -*)  ;;
-        *)   # and we're trying to pass /what/ exactly?
-             { { echo "$as_me:$LINENO: error: compiler flags start with a -" >&5
-echo "$as_me: error: compiler flags start with a -" >&2;}
-   { (exit 1); exit 1; }; } ;;
-      esac
-    done
-  fi
-
-  EXTRA_CXX_FLAGS="$enable_cxx_flags"
-  echo "$as_me:$LINENO: result: $EXTRA_CXX_FLAGS" >&5
-echo "${ECHO_T}$EXTRA_CXX_FLAGS" >&6
-
-
-
-# No surprises, no surprises...
-if test $atomicity_dir = cpu/generic ; then
-  { echo "$as_me:$LINENO: WARNING: No native atomic operations are provided for this platform." >&5
-echo "$as_me: WARNING: No native atomic operations are provided for this platform." >&2;}
-  if test $target_thread_file = single; then
-    { echo "$as_me:$LINENO: WARNING: They cannot be faked when thread support is disabled." >&5
-echo "$as_me: WARNING: They cannot be faked when thread support is disabled." >&2;}
-    { echo "$as_me:$LINENO: WARNING: Thread-safety of certain classes is not guaranteed." >&5
-echo "$as_me: WARNING: Thread-safety of certain classes is not guaranteed." >&2;}
-  else
-    { echo "$as_me:$LINENO: WARNING: They will be faked using a mutex." >&5
-echo "$as_me: WARNING: They will be faked using a mutex." >&2;}
-    { echo "$as_me:$LINENO: WARNING: Performance of certain classes will degrade as a result." >&5
-echo "$as_me: WARNING: Performance of certain classes will degrade as a result." >&2;}
-  fi
-fi
-
-
-if $GLIBCXX_IS_NATIVE; then
-
-  # We can do more elaborate tests that assume a working linker.
-  CANADIAN=no
-
-  # Check for available headers.
-
-
-
-
-
-
-
-
-
-
-
-
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
-  machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \
-  sys/types.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
+ac_c99_complex=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+#include <complex.h>
+int
+main ()
+{
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+		    csinf(tmp);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -7901,7 +7824,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -7914,147 +7837,72 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <$ac_header>
+#include <complex.h>
+int
+main ()
+{
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    csin(tmp);
+  ;
+  return 0;
+}
 _ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_complex=no
 fi
-
-done
-
-
-
-  # All these tests are for C++; save the language and the compiler flags.
-  # The CXXFLAGS thing is suspicious, but based on similar bits previously
-  # found in GLIBCXX_CONFIGURE.
-
-
-  ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-
-  # Check for maintainer-mode bits.
-  if test x"$USE_MAINTAINER_MODE" = xno; then
-    WERROR=''
-  else
-    WERROR='-Werror'
-  fi
-
-  # Check for -ffunction-sections -fdata-sections
-  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
-echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
-  CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
-  cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
+#include <complex.h>
 int
 main ()
 {
-int foo;
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    csinl(tmp);
   ;
   return 0;
 }
@@ -8081,261 +7929,118 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_fdsections=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_fdsections=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  if test "$ac_test_CXXFLAGS" = set; then
-    CXXFLAGS="$ac_save_CXXFLAGS"
-  else
-    # this is the suspicious part
-    CXXFLAGS=''
-  fi
-  if test x"$ac_fdsections" = x"yes"; then
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-  fi
-  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
-echo "${ECHO_T}$ac_fdsections" >&6
-
-  ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
-
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-
-  ldver=`$LD --version 2>/dev/null | head -1 | \
-         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
-
-  glibcxx_gnu_ld_version=`echo $ldver | \
-         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-
-  # Set --gc-sections.
-  if test "$with_gnu_ld" = "notbroken"; then
-    # GNU ld it is!  Joy and bunny rabbits!
-
-    # All these tests are for C++; save the language and the compiler flags.
-    # Need to do this so that g++ won't try to link in libstdc++
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Wl,--gc-sections'
-
-    # Check for -Wl,--gc-sections
-    # XXX This test is broken at the moment, as symbols required for linking
-    # are now in libsupc++ (not built yet).  In addition, this test has
-    # cored on solaris in the past.  In addition, --gc-sections doesn't
-    # really work at the moment (keeps on discarding used sections, first
-    # .eh_frame and now some of the glibc sections for iconv).
-    # Bzzzzt.  Thanks for playing, maybe next time.
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test "$cross_compiling" = yes; then
-  ac_sectionLDflags=yes
-else
-  cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-     int main(void)
-     {
-       try { throw 1; }
-       catch (...) { };
-       return 0;
-     }
-
+#include <complex.h>
+int
+main ()
+{
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+ 		    csinhf(tmp);
+  ;
+  return 0;
+}
 _ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_sectionLDflags=yes
+  :
 else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
+  echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-( exit $ac_status )
-ac_sectionLDflags=no
-fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
-fi
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-    if test "$ac_sectionLDflags" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
-echo "${ECHO_T}$ac_sectionLDflags" >&6
-  fi
-
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
-  fi
-
-
-
-
-
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-
-    echo "$as_me:$LINENO: checking for sin in -lm" >&5
-echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_sin+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
+ac_c99_complex=no
 fi
-cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char sin ();
+#include <complex.h>
 int
 main ()
 {
-sin ();
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    csinh(tmp);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_sin=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_sin=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
-echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
-if test $ac_cv_lib_m_sin = yes; then
-  libm="-lm"
+ac_c99_complex=no
 fi
-
-  ac_save_LIBS="$LIBS"
-  LIBS="$LIBS $libm"
-
-
-
-  echo "$as_me:$LINENO: checking for isinf declaration" >&5
-echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+#include <complex.h>
 int
 main ()
 {
- isinf(0);
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    csinhl(tmp);
   ;
   return 0;
 }
@@ -8362,167 +8067,72 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinf_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinf_use=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
-
-  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
-
-for ac_func in isinf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <complex.h>
 int
 main ()
 {
-return f != $ac_func;
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+		    csqrtf(tmp);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_complex=no
 fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
-echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+#include <complex.h>
 int
 main ()
 {
- _isinf(0);
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    csqrt(tmp);
   ;
   return 0;
 }
@@ -8549,170 +8159,72 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinf_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinf_use=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
-
-    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
-
-for ac_func in _isinf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <complex.h>
 int
 main ()
 {
-return f != $ac_func;
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    csqrtl(tmp);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_complex=no
 fi
-done
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for isnan declaration" >&5
-echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+#include <complex.h>
 int
 main ()
 {
- isnan(0);
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+		    ctanf(tmp);
   ;
   return 0;
 }
@@ -8739,167 +8251,72 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnan_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnan_use=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
-
-  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
-
-for ac_func in isnan
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <complex.h>
 int
 main ()
 {
-return f != $ac_func;
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    ctan(tmp);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_complex=no
 fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
-echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+#include <complex.h>
 int
 main ()
 {
- _isnan(0);
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    ctanl(tmp);
   ;
   return 0;
 }
@@ -8926,170 +8343,72 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnan_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnan_use=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
-
-    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
-
-for ac_func in _isnan
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <complex.h>
 int
 main ()
 {
-return f != $ac_func;
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+		    ctanhf(tmp);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_complex=no
 fi
-done
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for finite declaration" >&5
-echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finite_use+set} != xset; then
-    if test "${glibcxx_cv_func_finite_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+#include <complex.h>
 int
 main ()
 {
- finite(0);
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    ctanh(tmp);
   ;
   return 0;
 }
@@ -9116,167 +8435,72 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finite_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finite_use=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
-
-  if test x$glibcxx_cv_func_finite_use = x"yes"; then
-
-for ac_func in finite
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <complex.h>
 int
 main ()
 {
-return f != $ac_func;
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    ctanhl(tmp);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_complex=no
 fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _finite declaration" >&5
-echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finite_use+set} != xset; then
-    if test "${glibcxx_cv_func__finite_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+#include <complex.h>
 int
 main ()
 {
- _finite(0);
+typedef __complex__ float _ComplexT; _ComplexT tmp;
+		    cpowf(tmp, tmp);
   ;
   return 0;
 }
@@ -9303,166 +8527,72 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finite_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finite_use=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
-
-    if test x$glibcxx_cv_func__finite_use = x"yes"; then
-
-for ac_func in _finite
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <complex.h>
 int
 main ()
 {
-return f != $ac_func;
+typedef __complex__ double _ComplexT; _ComplexT tmp;
+		    cpow(tmp, tmp);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_complex=no
 fi
-done
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for copysign declaration" >&5
-echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <complex.h>
 int
 main ()
 {
- copysign(0, 0);
+typedef __complex__ long double _ComplexT; _ComplexT tmp;
+		    cpowl(tmp, tmp);
   ;
   return 0;
 }
@@ -9489,163 +8619,89 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysign_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysign_use=no
+ac_c99_complex=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
+  fi
+  echo "$as_me:$LINENO: result: $ac_c99_complex" >&5
+echo "${ECHO_T}$ac_c99_complex" >&6
 
-fi
+  if test x"$ac_c99_complex" = x"yes"; then
+    cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_C99_COMPLEX_MATH 1
+_ACEOF
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
-
-  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
 
-for ac_func in copysign
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  # Check for the existence in <stdio.h> of vscanf, et. al.
+  ac_c99_stdio=yes;
+  echo "$as_me:$LINENO: checking for ISO C99 support in <stdio.h>" >&5
+echo $ECHO_N "checking for ISO C99 support in <stdio.h>... $ECHO_C" >&6
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <stdio.h>
 int
 main ()
 {
-return f != $ac_func;
+snprintf("12", 0, "%i");
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_c99_stdio=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
-echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <stdio.h>
+                  #include <stdarg.h>
+                  void foo(char* fmt, ...)
+                  {va_list args; va_start(args, fmt);
+                  vfscanf(stderr, "%i", args);}
 int
 main ()
 {
- _copysign(0, 0);
+
   ;
   return 0;
 }
@@ -9672,166 +8728,78 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysign_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysign_use=no
+ac_c99_stdio=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
-
-    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
-
-for ac_func in _copysign
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <stdio.h>
+                  #include <stdarg.h>
+                  void foo(char* fmt, ...)
+                  {va_list args; va_start(args, fmt);
+                  vscanf("%i", args);}
 int
 main ()
 {
-return f != $ac_func;
+
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_stdio=no
 fi
-done
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for sincos declaration" >&5
-echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <stdio.h>
+                  #include <stdarg.h>
+                  void foo(char* fmt, ...)
+                  {va_list args; va_start(args, fmt);
+                  vsnprintf(fmt, 0, "%i", args);}
 int
 main ()
 {
- sincos(0, 0, 0);
+
   ;
   return 0;
 }
@@ -9858,163 +8826,85 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincos_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincos_use=no
+ac_c99_stdio=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
-
-  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
-
-for ac_func in sincos
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <stdio.h>
+                  #include <stdarg.h>
+                  void foo(char* fmt, ...)
+                  {va_list args; va_start(args, fmt);
+                  vsscanf(fmt, "%i", args);}
 int
 main ()
 {
-return f != $ac_func;
+
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_stdio=no
 fi
-done
-
-  else
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  echo "$as_me:$LINENO: result: $ac_c99_stdio" >&5
+echo "${ECHO_T}$ac_c99_stdio" >&6
 
-  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
-echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
+  # Check for the existence in <stdlib.h> of lldiv_t, et. al.
+  ac_c99_stdlib=yes;
+  echo "$as_me:$LINENO: checking for lldiv_t declaration" >&5
+echo $ECHO_N "checking for lldiv_t declaration... $ECHO_C" >&6
+  if test "${ac_c99_lldiv_t+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <stdlib.h>
 int
 main ()
 {
- _sincos(0, 0, 0);
+ lldiv_t mydivt;
   ;
   return 0;
 }
@@ -10041,170 +8931,78 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincos_use=yes
+  ac_c99_lldiv_t=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincos_use=no
+ac_c99_lldiv_t=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
 
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
-
-    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $ac_c99_lldiv_t" >&5
+echo "${ECHO_T}$ac_c99_lldiv_t" >&6
 
-for ac_func in _sincos
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  echo "$as_me:$LINENO: checking for ISO C99 support in <stdlib.h>" >&5
+echo $ECHO_N "checking for ISO C99 support in <stdlib.h>... $ECHO_C" >&6
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <stdlib.h>
 int
 main ()
 {
-return f != $ac_func;
+char* tmp; strtof("gnu", &tmp);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_stdlib=no
 fi
-done
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
-echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+#include <stdlib.h>
 int
 main ()
 {
- fpclass(0);
+char* tmp; strtold("gnu", &tmp);
   ;
   return 0;
 }
@@ -10231,167 +9029,25 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fpclass_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fpclass_use=no
+ac_c99_stdlib=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
-
-  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
-
-for ac_func in fpclass
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
+#include <stdlib.h>
+int
+main ()
 {
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
-echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
-int
-main ()
-{
- _fpclass(0);
+llabs(10);
   ;
   return 0;
 }
@@ -10418,170 +9074,70 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fpclass_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fpclass_use=no
+ac_c99_stdlib=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
-
-    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
-
-for ac_func in _fpclass
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <stdlib.h>
 int
 main ()
 {
-return f != $ac_func;
+lldiv(10,1);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_stdlib=no
 fi
-done
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
-echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+#include <stdlib.h>
 int
 main ()
 {
- qfpclass(0);
+atoll("10");
   ;
   return 0;
 }
@@ -10608,167 +9164,81 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_qfpclass_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_qfpclass_use=no
+ac_c99_stdlib=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
-
-  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
-
-for ac_func in qfpclass
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <stdlib.h>
 int
 main ()
 {
-return f != $ac_func;
+_Exit(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_stdlib=no
 fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
-echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  if test x"$ac_c99_lldiv_t" = x"no"; then
+    ac_c99_stdlib=no;
+  fi;
+  echo "$as_me:$LINENO: result: $ac_c99_stdlib" >&5
+echo "${ECHO_T}$ac_c99_stdlib" >&6
 
-      cat >conftest.$ac_ext <<_ACEOF
+  # Check for the existence of <wchar.h> functions used if C99 is enabled.
+  # XXX the wchar.h checks should be rolled into the general C99 bits.
+  ac_c99_wchar=yes;
+  echo "$as_me:$LINENO: checking for additional ISO C99 support in <wchar.h>" >&5
+echo $ECHO_N "checking for additional ISO C99 support in <wchar.h>... $ECHO_C" >&6
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+#include <wchar.h>
 int
 main ()
 {
- _qfpclass(0);
+wcstold(L"10.0", NULL);
   ;
   return 0;
 }
@@ -10795,166 +9265,70 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__qfpclass_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__qfpclass_use=no
+ac_c99_wchar=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
-
-    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
-
-for ac_func in _qfpclass
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <wchar.h>
 int
 main ()
 {
-return f != $ac_func;
+wcstoll(L"10", NULL, 10);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+ac_c99_wchar=no
 fi
-done
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for hypot declaration" >&5
-echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <wchar.h>
 int
 main ()
 {
- hypot(0, 0);
+wcstoull(L"10", NULL, 10);
   ;
   return 0;
 }
@@ -10981,30 +9355,4523 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypot_use=yes
+  :
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypot_use=no
+ac_c99_wchar=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+  echo "$as_me:$LINENO: result: $ac_c99_wchar" >&5
+echo "${ECHO_T}$ac_c99_wchar" >&6
+
+  echo "$as_me:$LINENO: checking for enabled ISO C99 support" >&5
+echo $ECHO_N "checking for enabled ISO C99 support... $ECHO_C" >&6
+  if test x"$ac_c99_math" = x"no" ||
+     test x"$ac_c99_complex" = x"no" ||
+     test x"$ac_c99_stdio" = x"no" ||
+     test x"$ac_c99_stdlib" = x"no" ||
+     test x"$ac_c99_wchar" = x"no"; then
+    enable_c99=no;
+  fi;
+  echo "$as_me:$LINENO: result: $enable_c99" >&5
+echo "${ECHO_T}$enable_c99" >&6
+
+  # Option parsed, now set things appropriately
+  if test x"$enable_c99" = x"yes"; then
+    cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_C99 1
+_ACEOF
+
+  fi
+
+  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
-fi
+
+   # Check whether --enable-long-long or --disable-long-long was given.
+if test "${enable_long_long+set}" = set; then
+  enableval="$enable_long_long"
+
+      case "$enableval" in
+       yes|no) ;;
+       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable long-long must be yes or no" >&5
+echo "$as_me: error: Argument to enable/disable long-long must be yes or no" >&2;}
+   { (exit 1); exit 1; }; } ;;
+      esac
+
+else
+  enable_long_long=yes
+fi;
+
+  if test $enable_long_long = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_LONG_LONG 1
+_ACEOF
+
+  fi
+
+
+  echo "$as_me:$LINENO: checking for thread model used by GCC" >&5
+echo $ECHO_N "checking for thread model used by GCC... $ECHO_C" >&6
+  target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
+  echo "$as_me:$LINENO: result: $target_thread_file" >&5
+echo "${ECHO_T}$target_thread_file" >&6
+
+  if test $target_thread_file != single; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_GTHR_DEFAULT 1
+_ACEOF
+
+  fi
+
+  glibcxx_thread_h=gthr-$target_thread_file.h
+
+    gthread_file=${toplevel_srcdir}/gcc/${glibcxx_thread_h}
+  if grep __GTHREADS $gthread_file >/dev/null 2>&1 ; then
+    enable_thread=yes
+  else
+   enable_thread=no
+  fi
+
+
+
+
+   # Check whether --enable-concept-checks or --disable-concept-checks was given.
+if test "${enable_concept_checks+set}" = set; then
+  enableval="$enable_concept_checks"
+
+      case "$enableval" in
+       yes|no) ;;
+       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable concept-checks must be yes or no" >&5
+echo "$as_me: error: Argument to enable/disable concept-checks must be yes or no" >&2;}
+   { (exit 1); exit 1; }; } ;;
+      esac
+
+else
+  enable_concept_checks=no
+fi;
+
+  if test $enable_concept_checks = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_CONCEPT_CHECKS 1
+_ACEOF
+
+  fi
+
+
+   # Check whether --enable-libstdcxx-debug-flags or --disable-libstdcxx-debug-flags was given.
+if test "${enable_libstdcxx_debug_flags+set}" = set; then
+  enableval="$enable_libstdcxx_debug_flags"
+  case "x$enable_libstdcxx_debug_flags" in
+      xno | x)    enable_libstdcxx_debug_flags= ;;
+      x-*)        ;;
+      *)          { { echo "$as_me:$LINENO: error: --enable-libstdcxx-debug-flags needs compiler flags as arguments" >&5
+echo "$as_me: error: --enable-libstdcxx-debug-flags needs compiler flags as arguments" >&2;}
+   { (exit 1); exit 1; }; } ;;
+     esac
+else
+  enable_libstdcxx_debug_flags="-g3 -O0"
+fi;
+
+
+  # Option parsed, now set things appropriately
+  DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
+
+
+  { echo "$as_me:$LINENO: Debug build flags set to $DEBUG_FLAGS" >&5
+echo "$as_me: Debug build flags set to $DEBUG_FLAGS" >&6;}
+
+
+  echo "$as_me:$LINENO: checking for additional debug build" >&5
+echo $ECHO_N "checking for additional debug build... $ECHO_C" >&6
+   # Check whether --enable-libstdcxx-debug or --disable-libstdcxx-debug was given.
+if test "${enable_libstdcxx_debug+set}" = set; then
+  enableval="$enable_libstdcxx_debug"
+
+      case "$enableval" in
+       yes|no) ;;
+       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable libstdcxx-debug must be yes or no" >&5
+echo "$as_me: error: Argument to enable/disable libstdcxx-debug must be yes or no" >&2;}
+   { (exit 1); exit 1; }; } ;;
+      esac
+
+else
+  enable_libstdcxx_debug=no
+fi;
+
+  echo "$as_me:$LINENO: result: $enable_libstdcxx_debug" >&5
+echo "${ECHO_T}$enable_libstdcxx_debug" >&6
+
+
+  echo "$as_me:$LINENO: checking for extra compiler flags for building" >&5
+echo $ECHO_N "checking for extra compiler flags for building... $ECHO_C" >&6
+   # Check whether --enable-cxx-flags or --disable-cxx-flags was given.
+if test "${enable_cxx_flags+set}" = set; then
+  enableval="$enable_cxx_flags"
+  case "x$enable_cxx_flags" in
+      xno | x)   enable_cxx_flags= ;;
+      x-*)       ;;
+      *)         { { echo "$as_me:$LINENO: error: --enable-cxx-flags needs compiler flags as arguments" >&5
+echo "$as_me: error: --enable-cxx-flags needs compiler flags as arguments" >&2;}
+   { (exit 1); exit 1; }; } ;;
+     esac
+else
+  enable_cxx_flags=
+fi;
+
+
+  # Run through flags (either default or command-line) and set anything
+  # extra (e.g., #defines) that must accompany particular g++ options.
+  if test -n "$enable_cxx_flags"; then
+    for f in $enable_cxx_flags; do
+      case "$f" in
+        -fhonor-std)  ;;
+        -*)  ;;
+        *)   # and we're trying to pass /what/ exactly?
+             { { echo "$as_me:$LINENO: error: compiler flags start with a -" >&5
+echo "$as_me: error: compiler flags start with a -" >&2;}
+   { (exit 1); exit 1; }; } ;;
+      esac
+    done
+  fi
+
+  EXTRA_CXX_FLAGS="$enable_cxx_flags"
+  echo "$as_me:$LINENO: result: $EXTRA_CXX_FLAGS" >&5
+echo "${ECHO_T}$EXTRA_CXX_FLAGS" >&6
+
+
+
+   # Check whether --enable-fully-dynamic-string or --disable-fully-dynamic-string was given.
+if test "${enable_fully_dynamic_string+set}" = set; then
+  enableval="$enable_fully_dynamic_string"
+
+      case "$enableval" in
+       yes|no) ;;
+       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable fully-dynamic-string must be yes or no" >&5
+echo "$as_me: error: Argument to enable/disable fully-dynamic-string must be yes or no" >&2;}
+   { (exit 1); exit 1; }; } ;;
+      esac
+
+else
+  enable_fully_dynamic_string=no
+fi;
+
+  if test $enable_fully_dynamic_string = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_FULLY_DYNAMIC_STRING 1
+_ACEOF
+
+  fi
+
+
+# No surprises, no surprises...
+if test $atomicity_dir = cpu/generic ; then
+  { echo "$as_me:$LINENO: WARNING: No native atomic operations are provided for this platform." >&5
+echo "$as_me: WARNING: No native atomic operations are provided for this platform." >&2;}
+  if test $target_thread_file = single; then
+    { echo "$as_me:$LINENO: WARNING: They cannot be faked when thread support is disabled." >&5
+echo "$as_me: WARNING: They cannot be faked when thread support is disabled." >&2;}
+    { echo "$as_me:$LINENO: WARNING: Thread-safety of certain classes is not guaranteed." >&5
+echo "$as_me: WARNING: Thread-safety of certain classes is not guaranteed." >&2;}
+  else
+    { echo "$as_me:$LINENO: WARNING: They will be faked using a mutex." >&5
+echo "$as_me: WARNING: They will be faked using a mutex." >&2;}
+    { echo "$as_me:$LINENO: WARNING: Performance of certain classes will degrade as a result." >&5
+echo "$as_me: WARNING: Performance of certain classes will degrade as a result." >&2;}
+  fi
+fi
+
+
+if $GLIBCXX_IS_NATIVE; then
+
+  # We can do more elaborate tests that assume a working linker.
+  CANADIAN=no
+
+  # Check for available headers.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
+  machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \
+  sys/types.h sys/ipc.h sys/sem.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+
+  # All these tests are for C++; save the language and the compiler flags.
+  # The CXXFLAGS thing is suspicious, but based on similar bits previously
+  # found in GLIBCXX_CONFIGURE.
+
+
+  ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+
+  # Check for maintainer-mode bits.
+  if test x"$USE_MAINTAINER_MODE" = xno; then
+    WERROR=''
+  else
+    WERROR='-Werror'
+  fi
+
+  # Check for -ffunction-sections -fdata-sections
+  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
+echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
+  CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+int foo;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_fdsections=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_fdsections=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  if test "$ac_test_CXXFLAGS" = set; then
+    CXXFLAGS="$ac_save_CXXFLAGS"
+  else
+    # this is the suspicious part
+    CXXFLAGS=''
+  fi
+  if test x"$ac_fdsections" = x"yes"; then
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+  fi
+  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
+echo "${ECHO_T}$ac_fdsections" >&6
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+
+  ldver=`$LD --version 2>/dev/null | head -1 | \
+         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
+
+  glibcxx_gnu_ld_version=`echo $ldver | \
+         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+
+  # Set --gc-sections.
+  if test "$with_gnu_ld" = "notbroken"; then
+    # GNU ld it is!  Joy and bunny rabbits!
+
+    # All these tests are for C++; save the language and the compiler flags.
+    # Need to do this so that g++ won't try to link in libstdc++
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-x c++  -Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    # XXX This test is broken at the moment, as symbols required for linking
+    # are now in libsupc++ (not built yet).  In addition, this test has
+    # cored on solaris in the past.  In addition, --gc-sections doesn't
+    # really work at the moment (keeps on discarding used sections, first
+    # .eh_frame and now some of the glibc sections for iconv).
+    # Bzzzzt.  Thanks for playing, maybe next time.
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test "$cross_compiling" = yes; then
+  ac_sectionLDflags=yes
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+     int main(void)
+     {
+       try { throw 1; }
+       catch (...) { };
+       return 0;
+     }
+
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_sectionLDflags=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_sectionLDflags=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+    if test "$ac_sectionLDflags" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
+echo "${ECHO_T}$ac_sectionLDflags" >&6
+  fi
+
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
+
+
+
+
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+    echo "$as_me:$LINENO: checking for sin in -lm" >&5
+echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_sin+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sin ();
+int
+main ()
+{
+sin ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_m_sin=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_m_sin=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
+echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
+if test $ac_cv_lib_m_sin = yes; then
+  libm="-lm"
+fi
+
+  ac_save_LIBS="$LIBS"
+  LIBS="$LIBS $libm"
+
+
+
+  echo "$as_me:$LINENO: checking for isinf declaration" >&5
+echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ isinf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isinf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isinf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
+
+  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
+
+for ac_func in isinf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
+echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _isinf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isinf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isinf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
+
+    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
+
+for ac_func in _isinf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for isnan declaration" >&5
+echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ isnan(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isnan_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isnan_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
+
+  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
+
+for ac_func in isnan
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
+echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _isnan(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isnan_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isnan_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
+
+    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
+
+for ac_func in _isnan
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for finite declaration" >&5
+echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finite_use+set} != xset; then
+    if test "${glibcxx_cv_func_finite_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ finite(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_finite_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_finite_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
+
+  if test x$glibcxx_cv_func_finite_use = x"yes"; then
+
+for ac_func in finite
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _finite declaration" >&5
+echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finite_use+set} != xset; then
+    if test "${glibcxx_cv_func__finite_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _finite(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__finite_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__finite_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
+
+    if test x$glibcxx_cv_func__finite_use = x"yes"; then
+
+for ac_func in _finite
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for copysign declaration" >&5
+echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
+    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ copysign(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_copysign_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_copysign_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
+
+  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
+
+for ac_func in copysign
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
+echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
+    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _copysign(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__copysign_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__copysign_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
+
+    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
+
+for ac_func in _copysign
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for sincos declaration" >&5
+echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ sincos(0, 0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_sincos_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_sincos_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
+
+  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
+
+for ac_func in sincos
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
+echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _sincos(0, 0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__sincos_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__sincos_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
+
+    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
+
+for ac_func in _sincos
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
+echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ fpclass(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_fpclass_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_fpclass_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
+
+  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
+
+for ac_func in fpclass
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
+echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _fpclass(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__fpclass_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__fpclass_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
+
+    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
+
+for ac_func in _fpclass
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
+echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ qfpclass(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_qfpclass_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_qfpclass_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
+
+  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
+
+for ac_func in qfpclass
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
+echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _qfpclass(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__qfpclass_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__qfpclass_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
+
+    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
+
+for ac_func in _qfpclass
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for hypot declaration" >&5
+echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ hypot(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_hypot_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_hypot_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
+
+  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
+
+for ac_func in hypot
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
+echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _hypot(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__hypot_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__hypot_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
+
+    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
+
+for ac_func in _hypot
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for float trig functions" >&5
+echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+    ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ `for x in acosf asinf atanf \
+                                          cosf sinf tanf \
+                                          coshf sinhf tanhf; do echo "$x (0);"; done`
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_float_trig_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_float_trig_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
+  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
+
+
+
+
+
+
+
+
+
+for ac_func in acosf asinf atanf \
+                                          cosf sinf tanf \
+                                          coshf sinhf tanhf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  fi
+
+
+  echo "$as_me:$LINENO: checking for float round functions" >&5
+echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+    ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ `for x in ceilf floorf; do echo "$x (0);"; done`
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_float_round_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_float_round_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
+  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
+
+
+for ac_func in ceilf floorf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for expf declaration" >&5
+echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expf_use+set} != xset; then
+    if test "${glibcxx_cv_func_expf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ expf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_expf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_expf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
+
+  if test x$glibcxx_cv_func_expf_use = x"yes"; then
+
+for ac_func in expf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _expf declaration" >&5
+echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expf_use+set} != xset; then
+    if test "${glibcxx_cv_func__expf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _expf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__expf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__expf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
 
-  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
+    if test x$glibcxx_cv_func__expf_use = x"yes"; then
 
-for ac_func in hypot
+for ac_func in _expf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
+echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ isnanf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isnanf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isnanf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
+
+  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
+
+for ac_func in isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -11112,10 +13979,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
-echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
+echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -11134,10 +14001,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _hypot(0, 0);
+ _isnanf(0);
   ;
   return 0;
 }
@@ -11164,12 +14035,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypot_use=yes
+  glibcxx_cv_func__isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypot_use=no
+glibcxx_cv_func__isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -11182,12 +14053,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
 
-    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
 
-for ac_func in _hypot
+for ac_func in _isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -11298,33 +14169,223 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for float trig functions" >&5
-echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinff declaration" >&5
+echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- `for x in acosf asinf atanf \
-                                          cosf sinf tanf \
-                                          coshf sinhf tanhf; do echo "$x (0);"; done`
+ isinff(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isinff_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isinff_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
+
+  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
+
+for ac_func in isinff
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
+echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _isinff(0);
   ;
   return 0;
 }
@@ -11351,37 +14412,216 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_trig_use=yes
+  glibcxx_cv_func__isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_trig_use=no
+glibcxx_cv_func__isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
-  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
 
+    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
 
+for ac_func in _isinff
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
+#undef $ac_func
 
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-for ac_func in acosf asinf atanf \
-                                          cosf sinf tanf \
-                                          coshf sinhf tanhf
+fi
+done
+
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
+echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ atan2f(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_atan2f_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_atan2f_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
+
+  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
+
+for ac_func in atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -11487,24 +14727,24 @@ _ACEOF
 fi
 done
 
-  fi
-
+  else
 
-  echo "$as_me:$LINENO: checking for float round functions" >&5
-echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
+echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -11514,7 +14754,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in ceilf floorf; do echo "$x (0);"; done`
+ _atan2f(0, 0);
   ;
   return 0;
 }
@@ -11541,28 +14781,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_round_use=yes
+  glibcxx_cv_func__atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_round_use=no
+glibcxx_cv_func__atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
-  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
 
+    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
 
-for ac_func in ceilf floorf
+for ac_func in _atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -11668,14 +14910,15 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for expf declaration" >&5
-echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expf_use+set} != xset; then
-    if test "${glibcxx_cv_func_expf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
+echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -11701,7 +14944,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- expf(0);
+ fabsf(0);
   ;
   return 0;
 }
@@ -11728,12 +14971,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expf_use=yes
+  glibcxx_cv_func_fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expf_use=no
+glibcxx_cv_func_fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -11746,12 +14989,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
 
-  if test x$glibcxx_cv_func_expf_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
 
-for ac_func in expf
+for ac_func in fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -11859,10 +15102,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expf declaration" >&5
-echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expf_use+set} != xset; then
-    if test "${glibcxx_cv_func__expf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
+echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -11888,7 +15131,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _expf(0);
+ _fabsf(0);
   ;
   return 0;
 }
@@ -11915,12 +15158,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expf_use=yes
+  glibcxx_cv_func__fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expf_use=no
+glibcxx_cv_func__fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -11933,12 +15176,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
 
-    if test x$glibcxx_cv_func__expf_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
 
-for ac_func in _expf
+for ac_func in _fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -12049,10 +15292,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
-echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
+echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -12071,14 +15314,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- isnanf(0);
+ fmodf(0, 0);
   ;
   return 0;
 }
@@ -12105,12 +15344,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanf_use=yes
+  glibcxx_cv_func_fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanf_use=no
+glibcxx_cv_func_fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -12123,12 +15362,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
 
-  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
 
-for ac_func in isnanf
+for ac_func in fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -12236,10 +15475,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
-echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
+echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -12258,14 +15497,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isnanf(0);
+ _fmodf(0, 0);
   ;
   return 0;
 }
@@ -12292,12 +15527,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanf_use=yes
+  glibcxx_cv_func__fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanf_use=no
+glibcxx_cv_func__fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -12310,12 +15545,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
 
-    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
 
-for ac_func in _isnanf
+for ac_func in _fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -12426,10 +15661,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinff declaration" >&5
-echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
+echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -12448,14 +15683,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- isinff(0);
+ frexpf(0, 0);
   ;
   return 0;
 }
@@ -12482,12 +15713,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinff_use=yes
+  glibcxx_cv_func_frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinff_use=no
+glibcxx_cv_func_frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -12500,12 +15731,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
 
-  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
 
-for ac_func in isinff
+for ac_func in frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -12613,10 +15844,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
-echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
+echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -12635,14 +15866,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isinff(0);
+ _frexpf(0, 0);
   ;
   return 0;
 }
@@ -12669,12 +15896,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinff_use=yes
+  glibcxx_cv_func__frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinff_use=no
+glibcxx_cv_func__frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -12687,12 +15914,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
 
-    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
 
-for ac_func in _isinff
+for ac_func in _frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -12803,10 +16030,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
-echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
+echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -12828,7 +16055,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- atan2f(0, 0);
+ hypotf(0, 0);
   ;
   return 0;
 }
@@ -12855,12 +16082,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2f_use=yes
+  glibcxx_cv_func_hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2f_use=no
+glibcxx_cv_func_hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -12873,12 +16100,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
 
-  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
 
-for ac_func in atan2f
+for ac_func in hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -12986,10 +16213,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
-echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
+echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -13011,7 +16238,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _atan2f(0, 0);
+ _hypotf(0, 0);
   ;
   return 0;
 }
@@ -13038,12 +16265,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2f_use=yes
+  glibcxx_cv_func__hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2f_use=no
+glibcxx_cv_func__hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -13056,12 +16283,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
 
-    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
 
-for ac_func in _atan2f
+for ac_func in _hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -13172,10 +16399,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
-echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
+echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -13194,14 +16421,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- fabsf(0);
+ ldexpf(0, 0);
   ;
   return 0;
 }
@@ -13228,12 +16451,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsf_use=yes
+  glibcxx_cv_func_ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsf_use=no
+glibcxx_cv_func_ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -13246,12 +16469,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
 
-  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
 
-for ac_func in fabsf
+for ac_func in ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -13359,10 +16582,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
-echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
+echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -13381,14 +16604,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _fabsf(0);
+ _ldexpf(0, 0);
   ;
   return 0;
 }
@@ -13415,12 +16634,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsf_use=yes
+  glibcxx_cv_func__ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsf_use=no
+glibcxx_cv_func__ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -13433,12 +16652,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
 
-    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
 
-for ac_func in _fabsf
+for ac_func in _ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -13549,10 +16768,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
-echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logf declaration" >&5
+echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logf_use+set} != xset; then
+    if test "${glibcxx_cv_func_logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -13571,10 +16790,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- fmodf(0, 0);
+ logf(0);
   ;
   return 0;
 }
@@ -13601,12 +16824,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodf_use=yes
+  glibcxx_cv_func_logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodf_use=no
+glibcxx_cv_func_logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -13619,12 +16842,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
 
-  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
+  if test x$glibcxx_cv_func_logf_use = x"yes"; then
 
-for ac_func in fmodf
+for ac_func in logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -13732,10 +16955,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
-echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logf declaration" >&5
+echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logf_use+set} != xset; then
+    if test "${glibcxx_cv_func__logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -13754,10 +16977,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _fmodf(0, 0);
+ _logf(0);
   ;
   return 0;
 }
@@ -13784,12 +17011,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodf_use=yes
+  glibcxx_cv_func__logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodf_use=no
+glibcxx_cv_func__logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -13802,12 +17029,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
 
-    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
+    if test x$glibcxx_cv_func__logf_use = x"yes"; then
 
-for ac_func in _fmodf
+for ac_func in _logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -13918,10 +17145,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
-echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10f declaration" >&5
+echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -13940,10 +17167,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- frexpf(0, 0);
+ log10f(0);
   ;
   return 0;
 }
@@ -13970,12 +17201,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpf_use=yes
+  glibcxx_cv_func_log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpf_use=no
+glibcxx_cv_func_log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -13988,12 +17219,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
 
-  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
 
-for ac_func in frexpf
+for ac_func in log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -14101,10 +17332,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
-echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
+echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -14123,10 +17354,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _frexpf(0, 0);
+ _log10f(0);
   ;
   return 0;
 }
@@ -14153,12 +17388,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpf_use=yes
+  glibcxx_cv_func__log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpf_use=no
+glibcxx_cv_func__log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -14171,12 +17406,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
 
-    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
 
-for ac_func in _frexpf
+for ac_func in _log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -14287,10 +17522,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
-echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modff declaration" >&5
+echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modff_use+set} != xset; then
+    if test "${glibcxx_cv_func_modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -14312,7 +17547,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- hypotf(0, 0);
+ modff(0, 0);
   ;
   return 0;
 }
@@ -14339,12 +17574,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotf_use=yes
+  glibcxx_cv_func_modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotf_use=no
+glibcxx_cv_func_modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -14357,12 +17592,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
 
-  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
+  if test x$glibcxx_cv_func_modff_use = x"yes"; then
 
-for ac_func in hypotf
+for ac_func in modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -14470,10 +17705,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
-echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modff declaration" >&5
+echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modff_use+set} != xset; then
+    if test "${glibcxx_cv_func__modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -14495,7 +17730,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _hypotf(0, 0);
+ _modff(0, 0);
   ;
   return 0;
 }
@@ -14522,12 +17757,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotf_use=yes
+  glibcxx_cv_func__modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotf_use=no
+glibcxx_cv_func__modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -14540,12 +17775,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
 
-    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
+    if test x$glibcxx_cv_func__modff_use = x"yes"; then
 
-for ac_func in _hypotf
+for ac_func in _modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -14656,10 +17891,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
-echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powf declaration" >&5
+echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powf_use+set} != xset; then
+    if test "${glibcxx_cv_func_powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -14681,7 +17916,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- ldexpf(0, 0);
+ powf(0, 0);
   ;
   return 0;
 }
@@ -14708,12 +17943,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpf_use=yes
+  glibcxx_cv_func_powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpf_use=no
+glibcxx_cv_func_powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -14726,12 +17961,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_powf_use = x"yes"; then
 
-for ac_func in ldexpf
+for ac_func in powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -14839,10 +18074,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
-echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powf declaration" >&5
+echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powf_use+set} != xset; then
+    if test "${glibcxx_cv_func__powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -14864,7 +18099,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _ldexpf(0, 0);
+ _powf(0, 0);
   ;
   return 0;
 }
@@ -14891,12 +18126,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpf_use=yes
+  glibcxx_cv_func__powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpf_use=no
+glibcxx_cv_func__powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -14909,12 +18144,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__powf_use = x"yes"; then
 
-for ac_func in _ldexpf
+for ac_func in _powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -15025,10 +18260,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logf declaration" >&5
-echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logf_use+set} != xset; then
-    if test "${glibcxx_cv_func_logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
+echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -15054,7 +18289,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- logf(0);
+ sqrtf(0);
   ;
   return 0;
 }
@@ -15081,12 +18316,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logf_use=yes
+  glibcxx_cv_func_sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logf_use=no
+glibcxx_cv_func_sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -15099,12 +18334,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
 
-  if test x$glibcxx_cv_func_logf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
 
-for ac_func in logf
+for ac_func in sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -15212,10 +18447,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logf declaration" >&5
-echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logf_use+set} != xset; then
-    if test "${glibcxx_cv_func__logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
+echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -15241,7 +18476,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _logf(0);
+ _sqrtf(0);
   ;
   return 0;
 }
@@ -15268,12 +18503,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logf_use=yes
+  glibcxx_cv_func__sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logf_use=no
+glibcxx_cv_func__sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -15286,12 +18521,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
 
-    if test x$glibcxx_cv_func__logf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
 
-for ac_func in _logf
+for ac_func in _sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -15402,10 +18637,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10f declaration" >&5
-echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
+echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -15424,14 +18659,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- log10f(0);
+ sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -15458,12 +18689,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10f_use=yes
+  glibcxx_cv_func_sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10f_use=no
+glibcxx_cv_func_sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -15476,12 +18707,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
 
-  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
 
-for ac_func in log10f
+for ac_func in sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -15589,10 +18820,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
-echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
+echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -15611,14 +18842,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _log10f(0);
+ _sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -15645,12 +18872,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10f_use=yes
+  glibcxx_cv_func__sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10f_use=no
+glibcxx_cv_func__sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -15663,12 +18890,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
 
-    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
 
-for ac_func in _log10f
+for ac_func in _sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -15779,10 +19006,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modff declaration" >&5
-echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modff_use+set} != xset; then
-    if test "${glibcxx_cv_func_modff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finitef declaration" >&5
+echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -15801,10 +19028,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- modff(0, 0);
+ finitef(0);
   ;
   return 0;
 }
@@ -15831,12 +19062,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modff_use=yes
+  glibcxx_cv_func_finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modff_use=no
+glibcxx_cv_func_finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -15849,12 +19080,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
 
-  if test x$glibcxx_cv_func_modff_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
 
-for ac_func in modff
+for ac_func in finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -15962,10 +19193,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modff declaration" >&5
-echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modff_use+set} != xset; then
-    if test "${glibcxx_cv_func__modff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
+echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -15984,10 +19215,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _modff(0, 0);
+ _finitef(0);
   ;
   return 0;
 }
@@ -16014,12 +19249,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modff_use=yes
+  glibcxx_cv_func__finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modff_use=no
+glibcxx_cv_func__finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -16032,12 +19267,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
 
-    if test x$glibcxx_cv_func__modff_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
 
-for ac_func in _modff
+for ac_func in _finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -16148,22 +19383,21 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powf declaration" >&5
-echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powf_use+set} != xset; then
-    if test "${glibcxx_cv_func_powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for long double trig functions" >&5
+echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -16173,7 +19407,9 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- powf(0, 0);
+ `for x in acosl asinl atanl \
+                                          cosl sinl tanl \
+                                          coshl sinhl tanhl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -16200,30 +19436,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powf_use=yes
+  glibcxx_cv_func_long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powf_use=no
+glibcxx_cv_func_long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
+  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_powf_use = x"yes"; then
 
-for ac_func in powf
+
+
+
+
+
+
+
+for ac_func in acosl asinl atanl \
+                                          cosl sinl tanl \
+                                          coshl sinhl tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -16329,24 +19572,24 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _powf declaration" >&5
-echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powf_use+set} != xset; then
-    if test "${glibcxx_cv_func__powf_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for long double round functions" >&5
+echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -16356,7 +19599,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _powf(0, 0);
+ `for x in ceill floorl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -16383,30 +19626,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powf_use=yes
+  glibcxx_cv_func_long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powf_use=no
+glibcxx_cv_func_long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
+  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__powf_use = x"yes"; then
 
-for ac_func in _powf
+for ac_func in ceill floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -16512,15 +19753,14 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
-echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
+echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -16546,7 +19786,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sqrtf(0);
+ isnanl(0);
   ;
   return 0;
 }
@@ -16573,12 +19813,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtf_use=yes
+  glibcxx_cv_func_isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtf_use=no
+glibcxx_cv_func_isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -16591,12 +19831,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
 
-  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
 
-for ac_func in sqrtf
+for ac_func in isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -16704,10 +19944,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
-echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
+echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -16733,7 +19973,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sqrtf(0);
+ _isnanl(0);
   ;
   return 0;
 }
@@ -16760,12 +20000,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtf_use=yes
+  glibcxx_cv_func__isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtf_use=no
+glibcxx_cv_func__isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -16778,12 +20018,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
 
-    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
 
-for ac_func in _sqrtf
+for ac_func in _isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -16894,10 +20134,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
-echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
+echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -16916,10 +20156,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- sincosf(0, 0, 0);
+ isinfl(0);
   ;
   return 0;
 }
@@ -16946,12 +20190,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosf_use=yes
+  glibcxx_cv_func_isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosf_use=no
+glibcxx_cv_func_isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -16964,12 +20208,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
 
-  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
 
-for ac_func in sincosf
+for ac_func in isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -17077,10 +20321,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
-echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
+echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -17099,10 +20343,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _sincosf(0, 0, 0);
+ _isinfl(0);
   ;
   return 0;
 }
@@ -17129,12 +20377,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosf_use=yes
+  glibcxx_cv_func__isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosf_use=no
+glibcxx_cv_func__isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -17147,12 +20395,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
 
-    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
 
-for ac_func in _sincosf
+for ac_func in _isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -17263,10 +20511,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for finitef declaration" >&5
-echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
+echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
+    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -17285,14 +20533,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- finitef(0);
+ copysignl(0, 0);
   ;
   return 0;
 }
@@ -17319,12 +20563,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitef_use=yes
+  glibcxx_cv_func_copysignl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitef_use=no
+glibcxx_cv_func_copysignl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -17337,12 +20581,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
 
-  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
+  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
 
-for ac_func in finitef
+for ac_func in copysignl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -17450,10 +20694,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
-echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
+echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
+    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -17472,14 +20716,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _finitef(0);
+ _copysignl(0, 0);
   ;
   return 0;
 }
@@ -17506,12 +20746,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitef_use=yes
+  glibcxx_cv_func__copysignl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitef_use=no
+glibcxx_cv_func__copysignl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -17524,12 +20764,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
 
-    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
+    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
 
-for ac_func in _finitef
+for ac_func in _copysignl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -17640,21 +20880,22 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for long double trig functions" >&5
-echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
+echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -17664,9 +20905,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in acosl asinl atanl \
-                                          cosl sinl tanl \
-                                          coshl sinhl tanhl; do echo "$x (0);"; done`
+ atan2l(0, 0);
   ;
   return 0;
 }
@@ -17693,37 +20932,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_trig_use=yes
+  glibcxx_cv_func_atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_trig_use=no
+glibcxx_cv_func_atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
-  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
 
+  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
 
-for ac_func in acosl asinl atanl \
-                                          cosl sinl tanl \
-                                          coshl sinhl tanhl
+for ac_func in atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -17829,24 +21061,24 @@ _ACEOF
 fi
 done
 
-  fi
-
+  else
 
-  echo "$as_me:$LINENO: checking for long double round functions" >&5
-echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
+echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -17856,7 +21088,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in ceill floorl; do echo "$x (0);"; done`
+ _atan2l(0, 0);
   ;
   return 0;
 }
@@ -17883,28 +21115,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_round_use=yes
+  glibcxx_cv_func__atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_round_use=no
+glibcxx_cv_func__atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
-  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
 
+    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
 
-for ac_func in ceill floorl
+for ac_func in _atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -18010,14 +21244,15 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
-echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for expl declaration" >&5
+echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expl_use+set} != xset; then
+    if test "${glibcxx_cv_func_expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -18043,7 +21278,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isnanl(0);
+ expl(0);
   ;
   return 0;
 }
@@ -18070,12 +21305,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanl_use=yes
+  glibcxx_cv_func_expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanl_use=no
+glibcxx_cv_func_expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -18088,12 +21323,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
 
-  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
+  if test x$glibcxx_cv_func_expl_use = x"yes"; then
 
-for ac_func in isnanl
+for ac_func in expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -18201,10 +21436,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
-echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expl declaration" >&5
+echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expl_use+set} != xset; then
+    if test "${glibcxx_cv_func__expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -18230,7 +21465,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isnanl(0);
+ _expl(0);
   ;
   return 0;
 }
@@ -18257,12 +21492,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanl_use=yes
+  glibcxx_cv_func__expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanl_use=no
+glibcxx_cv_func__expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -18275,12 +21510,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
 
-    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
+    if test x$glibcxx_cv_func__expl_use = x"yes"; then
 
-for ac_func in _isnanl
+for ac_func in _expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -18391,10 +21626,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
-echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
+echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -18420,7 +21655,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isinfl(0);
+ fabsl(0);
   ;
   return 0;
 }
@@ -18447,12 +21682,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinfl_use=yes
+  glibcxx_cv_func_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinfl_use=no
+glibcxx_cv_func_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -18465,12 +21700,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
 
-  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
 
-for ac_func in isinfl
+for ac_func in fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -18578,10 +21813,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
-echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
+echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -18607,7 +21842,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isinfl(0);
+ _fabsl(0);
   ;
   return 0;
 }
@@ -18634,12 +21869,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinfl_use=yes
+  glibcxx_cv_func__fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinfl_use=no
+glibcxx_cv_func__fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -18652,12 +21887,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
 
-    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
 
-for ac_func in _isinfl
+for ac_func in _fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -18768,10 +22003,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
-echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
+echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -18793,7 +22028,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- copysignl(0, 0);
+ fmodl(0, 0);
   ;
   return 0;
 }
@@ -18820,12 +22055,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysignl_use=yes
+  glibcxx_cv_func_fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysignl_use=no
+glibcxx_cv_func_fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -18838,12 +22073,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
 
-  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
 
-for ac_func in copysignl
+for ac_func in fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -18951,10 +22186,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
-echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
+echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -18976,7 +22211,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _copysignl(0, 0);
+ _fmodl(0, 0);
   ;
   return 0;
 }
@@ -19003,12 +22238,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysignl_use=yes
+  glibcxx_cv_func__fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysignl_use=no
+glibcxx_cv_func__fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -19021,12 +22256,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
 
-    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
 
-for ac_func in _copysignl
+for ac_func in _fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -19137,10 +22372,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
-echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
+echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -19162,7 +22397,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- atan2l(0, 0);
+ frexpl(0, 0);
   ;
   return 0;
 }
@@ -19189,12 +22424,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2l_use=yes
+  glibcxx_cv_func_frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2l_use=no
+glibcxx_cv_func_frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -19207,12 +22442,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
 
-  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
 
-for ac_func in atan2l
+for ac_func in frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -19320,10 +22555,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
-echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
+echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -19345,7 +22580,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _atan2l(0, 0);
+ _frexpl(0, 0);
   ;
   return 0;
 }
@@ -19372,12 +22607,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2l_use=yes
+  glibcxx_cv_func__frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2l_use=no
+glibcxx_cv_func__frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -19390,12 +22625,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
 
-    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
 
-for ac_func in _atan2l
+for ac_func in _frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -19506,10 +22741,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for expl declaration" >&5
-echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expl_use+set} != xset; then
-    if test "${glibcxx_cv_func_expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
+echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -19528,14 +22763,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- expl(0);
+ hypotl(0, 0);
   ;
   return 0;
 }
@@ -19562,12 +22793,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expl_use=yes
+  glibcxx_cv_func_hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expl_use=no
+glibcxx_cv_func_hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -19580,12 +22811,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
 
-  if test x$glibcxx_cv_func_expl_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
 
-for ac_func in expl
+for ac_func in hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -19693,10 +22924,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expl declaration" >&5
-echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expl_use+set} != xset; then
-    if test "${glibcxx_cv_func__expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
+echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -19715,14 +22946,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _expl(0);
+ _hypotl(0, 0);
   ;
   return 0;
 }
@@ -19749,12 +22976,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expl_use=yes
+  glibcxx_cv_func__hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expl_use=no
+glibcxx_cv_func__hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -19767,12 +22994,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
 
-    if test x$glibcxx_cv_func__expl_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
 
-for ac_func in _expl
+for ac_func in _hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -19883,10 +23110,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
-echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
+echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -19905,14 +23132,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- fabsl(0);
+ ldexpl(0, 0);
   ;
   return 0;
 }
@@ -19939,12 +23162,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsl_use=yes
+  glibcxx_cv_func_ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsl_use=no
+glibcxx_cv_func_ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -19957,12 +23180,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
 
-  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
 
-for ac_func in fabsl
+for ac_func in ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -20070,10 +23293,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
-echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
+echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -20092,14 +23315,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _fabsl(0);
+ _ldexpl(0, 0);
   ;
   return 0;
 }
@@ -20126,12 +23345,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsl_use=yes
+  glibcxx_cv_func__ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsl_use=no
+glibcxx_cv_func__ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -20144,12 +23363,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
 
-    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
 
-for ac_func in _fabsl
+for ac_func in _ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -20260,10 +23479,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
-echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logl declaration" >&5
+echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logl_use+set} != xset; then
+    if test "${glibcxx_cv_func_logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -20282,10 +23501,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- fmodl(0, 0);
+ logl(0);
   ;
   return 0;
 }
@@ -20312,12 +23535,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodl_use=yes
+  glibcxx_cv_func_logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodl_use=no
+glibcxx_cv_func_logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -20330,12 +23553,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
 
-  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
+  if test x$glibcxx_cv_func_logl_use = x"yes"; then
 
-for ac_func in fmodl
+for ac_func in logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -20443,10 +23666,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
-echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logl declaration" >&5
+echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logl_use+set} != xset; then
+    if test "${glibcxx_cv_func__logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -20465,10 +23688,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _fmodl(0, 0);
+ _logl(0);
   ;
   return 0;
 }
@@ -20495,12 +23722,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodl_use=yes
+  glibcxx_cv_func__logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodl_use=no
+glibcxx_cv_func__logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -20513,12 +23740,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
 
-    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
+    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in _fmodl
+for ac_func in _logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -20629,10 +23856,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
-echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10l declaration" >&5
+echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -20651,10 +23878,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- frexpl(0, 0);
+ log10l(0);
   ;
   return 0;
 }
@@ -20681,12 +23912,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpl_use=yes
+  glibcxx_cv_func_log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpl_use=no
+glibcxx_cv_func_log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -20699,12 +23930,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
 
-  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in frexpl
+for ac_func in log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -20812,10 +24043,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
-echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
+echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -20834,10 +24065,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _frexpl(0, 0);
+ _log10l(0);
   ;
   return 0;
 }
@@ -20864,12 +24099,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpl_use=yes
+  glibcxx_cv_func__log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpl_use=no
+glibcxx_cv_func__log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -20882,12 +24117,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
 
-    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-for ac_func in _frexpl
+for ac_func in _log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -20998,10 +24233,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
-echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modfl declaration" >&5
+echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -21023,7 +24258,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- hypotl(0, 0);
+ modfl(0, 0);
   ;
   return 0;
 }
@@ -21050,12 +24285,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotl_use=yes
+  glibcxx_cv_func_modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotl_use=no
+glibcxx_cv_func_modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -21068,12 +24303,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
 
-  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
+  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
 
-for ac_func in hypotl
+for ac_func in modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -21181,10 +24416,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
-echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
+echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -21206,7 +24441,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _hypotl(0, 0);
+ _modfl(0, 0);
   ;
   return 0;
 }
@@ -21233,12 +24468,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotl_use=yes
+  glibcxx_cv_func__modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotl_use=no
+glibcxx_cv_func__modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -21251,12 +24486,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
 
-    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
+    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
 
-for ac_func in _hypotl
+for ac_func in _modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -21367,10 +24602,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
-echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powl declaration" >&5
+echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powl_use+set} != xset; then
+    if test "${glibcxx_cv_func_powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -21392,7 +24627,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- ldexpl(0, 0);
+ powl(0, 0);
   ;
   return 0;
 }
@@ -21419,12 +24654,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpl_use=yes
+  glibcxx_cv_func_powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpl_use=no
+glibcxx_cv_func_powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -21437,12 +24672,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_powl_use = x"yes"; then
 
-for ac_func in ldexpl
+for ac_func in powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -21550,10 +24785,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
-echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powl declaration" >&5
+echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powl_use+set} != xset; then
+    if test "${glibcxx_cv_func__powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -21575,7 +24810,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _ldexpl(0, 0);
+ _powl(0, 0);
   ;
   return 0;
 }
@@ -21602,12 +24837,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpl_use=yes
+  glibcxx_cv_func__powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpl_use=no
+glibcxx_cv_func__powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -21620,12 +24855,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
-for ac_func in _ldexpl
+for ac_func in _powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -21736,10 +24971,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logl declaration" >&5
-echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logl_use+set} != xset; then
-    if test "${glibcxx_cv_func_logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
+echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -21765,7 +25000,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- logl(0);
+ sqrtl(0);
   ;
   return 0;
 }
@@ -21792,12 +25027,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logl_use=yes
+  glibcxx_cv_func_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logl_use=no
+glibcxx_cv_func_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -21810,12 +25045,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
 
-  if test x$glibcxx_cv_func_logl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in logl
+for ac_func in sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -21923,10 +25158,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logl declaration" >&5
-echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logl_use+set} != xset; then
-    if test "${glibcxx_cv_func__logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
+echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -21952,7 +25187,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _logl(0);
+ _sqrtl(0);
   ;
   return 0;
 }
@@ -21979,12 +25214,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logl_use=yes
+  glibcxx_cv_func__sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logl_use=no
+glibcxx_cv_func__sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -21997,12 +25232,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
 
-    if test x$glibcxx_cv_func__logl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in _logl
+for ac_func in _sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -22113,10 +25348,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10l declaration" >&5
-echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
+echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -22135,14 +25370,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- log10l(0);
+ sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -22169,12 +25400,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10l_use=yes
+  glibcxx_cv_func_sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10l_use=no
+glibcxx_cv_func_sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -22187,12 +25418,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
 
-  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
 
-for ac_func in log10l
+for ac_func in sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -22300,200 +25531,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
-echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
-int
-main ()
-{
- _log10l(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10l_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func__log10l_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
-
-    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
-
-for ac_func in _log10l
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for modfl declaration" >&5
-echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
+echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -22515,7 +25556,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- modfl(0, 0);
+ _sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -22542,12 +25583,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modfl_use=yes
+  glibcxx_cv_func__sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modfl_use=no
+glibcxx_cv_func__sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -22560,12 +25601,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
 
-  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
 
-for ac_func in modfl
+for ac_func in _sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -22671,12 +25712,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
-echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for finitel declaration" >&5
+echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -22695,10 +25739,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _modfl(0, 0);
+ finitel(0);
   ;
   return 0;
 }
@@ -22725,12 +25773,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modfl_use=yes
+  glibcxx_cv_func_finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modfl_use=no
+glibcxx_cv_func_finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -22743,12 +25791,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
 
-    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
 
-for ac_func in _modfl
+for ac_func in finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -22854,15 +25902,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for powl declaration" >&5
-echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powl_use+set} != xset; then
-    if test "${glibcxx_cv_func_powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
+echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -22881,10 +25926,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- powl(0, 0);
+ _finitel(0);
   ;
   return 0;
 }
@@ -22911,12 +25960,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powl_use=yes
+  glibcxx_cv_func__finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powl_use=no
+glibcxx_cv_func__finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -22929,12 +25978,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
 
-  if test x$glibcxx_cv_func_powl_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in powl
+for ac_func in _finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -23040,24 +26089,27 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _powl declaration" >&5
-echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powl_use+set} != xset; then
-    if test "${glibcxx_cv_func__powl_use+set}" = set; then
+
+
+
+  echo "$as_me:$LINENO: checking for _float trig functions" >&5
+echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -23067,7 +26119,9 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _powl(0, 0);
+ `for x in _acosf _asinf _atanf \
+                                          _cosf _sinf _tanf \
+                                          _coshf _sinhf _tanhf; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -23094,30 +26148,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powl_use=yes
+  glibcxx_cv_func__float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powl_use=no
+glibcxx_cv_func__float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
+  if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
-for ac_func in _powl
+
+
+
+
+
+
+
+for ac_func in _acosf _asinf _atanf \
+                                          _cosf _sinf _tanf \
+                                          _coshf _sinhf _tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -23223,41 +26284,34 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
-
-  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
-echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _float round functions" >&5
+echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- sqrtl(0);
+ `for x in _ceilf _floorf; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -23284,30 +26338,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtl_use=yes
+  glibcxx_cv_func__float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtl_use=no
+glibcxx_cv_func__float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
+  if test x$glibcxx_cv_func__float_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in sqrtl
+for ac_func in _ceilf _floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -23413,38 +26465,37 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
-echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for _long double trig functions" >&5
+echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _sqrtl(0);
+ `for x in _acosl _asinl _atanl \
+                                          _cosl _sinl _tanl \
+                                          _coshl _sinhl _tanhl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -23471,30 +26522,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtl_use=yes
+  glibcxx_cv_func__long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtl_use=no
+glibcxx_cv_func__long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
+  if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in _sqrtl
+
+
+
+
+
+
+
+for ac_func in _acosl _asinl _atanl \
+                                          _cosl _sinl _tanl \
+                                          _coshl _sinhl _tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -23600,27 +26658,24 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
-
-  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
-echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _long double round functions" >&5
+echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -23630,7 +26685,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincosl(0, 0, 0);
+ `for x in _ceill _floorl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -23657,30 +26712,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosl_use=yes
+  glibcxx_cv_func__long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosl_use=no
+glibcxx_cv_func__long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
+  if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
 
-for ac_func in sincosl
+for ac_func in _ceill _floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -23786,12 +26839,18 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
-echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
+
+  LIBS="$ac_save_LIBS"
+  CXXFLAGS="$ac_save_CXXFLAGS"
+
+
+
+  echo "$as_me:$LINENO: checking for __builtin_abs declaration" >&5
+echo $ECHO_N "checking for __builtin_abs declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_abs_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_abs_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -23813,7 +26872,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosl(0, 0, 0);
+ __builtin_abs(0);
   ;
   return 0;
 }
@@ -23840,12 +26899,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosl_use=yes
+  glibcxx_cv_func___builtin_abs_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosl_use=no
+glibcxx_cv_func___builtin_abs_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -23858,20 +26917,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
-
-    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
-
-for ac_func in _sincosl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_use" >&6
+  if test x$glibcxx_cv_func___builtin_abs_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_abs linkage" >&5
+echo $ECHO_N "checking for __builtin_abs linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_abs_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_abs_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -23882,47 +26938,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_abs(0);
   ;
   return 0;
 }
@@ -23949,35 +26969,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_abs_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_abs_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
     fi
-  fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_link" >&6
+    if test x$glibcxx_cv_func___builtin_abs_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_abs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for finitel declaration" >&5
-echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for __builtin_fabsf declaration" >&5
+echo $ECHO_N "checking for __builtin_fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -23996,14 +27017,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- finitel(0);
+ __builtin_fabsf(0);
   ;
   return 0;
 }
@@ -24030,12 +27047,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitel_use=yes
+  glibcxx_cv_func___builtin_fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitel_use=no
+glibcxx_cv_func___builtin_fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -24048,20 +27065,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
-
-  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
-
-for ac_func in finitel
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_use" >&6
+  if test x$glibcxx_cv_func___builtin_fabsf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_fabsf linkage" >&5
+echo $ECHO_N "checking for __builtin_fabsf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_fabsf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_fabsf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -24072,47 +27086,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_fabsf(0);
   ;
   return 0;
 }
@@ -24139,32 +27117,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_fabsf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_fabsf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_link" >&6
+    if test x$glibcxx_cv_func___builtin_fabsf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_fabsf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
 _ACEOF
 
-fi
-done
+    fi
+  fi
 
-  else
 
-  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
-echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_fabs declaration" >&5
+echo $ECHO_N "checking for __builtin_fabs declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_fabs_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_fabs_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -24183,14 +27165,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _finitel(0);
+ __builtin_fabs(0);
   ;
   return 0;
 }
@@ -24217,12 +27195,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitel_use=yes
+  glibcxx_cv_func___builtin_fabs_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitel_use=no
+glibcxx_cv_func___builtin_fabs_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -24235,20 +27213,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
-
-    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
-
-for ac_func in _finitel
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_use" >&6
+  if test x$glibcxx_cv_func___builtin_fabs_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_fabs linkage" >&5
+echo $ECHO_N "checking for __builtin_fabs linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_fabs_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_fabs_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -24259,47 +27234,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_fabs(0);
   ;
   return 0;
 }
@@ -24326,47 +27265,48 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_fabs_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_fabs_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
     fi
-  fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_link" >&6
+    if test x$glibcxx_cv_func___builtin_fabs_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_fabs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
-  echo "$as_me:$LINENO: checking for _float trig functions" >&5
-echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_fabsl declaration" >&5
+echo $ECHO_N "checking for __builtin_fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -24376,9 +27316,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _acosf _asinf _atanf \
-                                          _cosf _sinf _tanf \
-                                          _coshf _sinhf _tanhf; do echo "$x (0);"; done`
+ __builtin_fabsl(0);
   ;
   return 0;
 }
@@ -24405,45 +27343,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_trig_use=yes
+  glibcxx_cv_func___builtin_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_trig_use=no
+glibcxx_cv_func___builtin_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
-  if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
-
-
-
-
-
-
-
 
+fi
 
-for ac_func in _acosf _asinf _atanf \
-                                          _cosf _sinf _tanf \
-                                          _coshf _sinhf _tanhf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_use" >&6
+  if test x$glibcxx_cv_func___builtin_fabsl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_fabsl linkage" >&5
+echo $ECHO_N "checking for __builtin_fabsl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_fabsl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_fabsl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -24454,47 +27382,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_fabsl(0);
   ;
   return 0;
 }
@@ -24521,44 +27413,48 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_fabsl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_fabsl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_link" >&6
+    if test x$glibcxx_cv_func___builtin_fabsl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_fabsl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
+
+    fi
   fi
 
 
-  echo "$as_me:$LINENO: checking for _float round functions" >&5
-echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__float_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_labs declaration" >&5
+echo $ECHO_N "checking for __builtin_labs declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_labs_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_labs_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -24568,7 +27464,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _ceilf _floorf; do echo "$x (0);"; done`
+ __builtin_labs(0);
   ;
   return 0;
 }
@@ -24595,36 +27491,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_round_use=yes
+  glibcxx_cv_func___builtin_labs_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_round_use=no
+glibcxx_cv_func___builtin_labs_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
-  if test x$glibcxx_cv_func__float_round_use = x"yes"; then
 
+fi
 
-for ac_func in _ceilf _floorf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_use" >&6
+  if test x$glibcxx_cv_func___builtin_labs_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_labs linkage" >&5
+echo $ECHO_N "checking for __builtin_labs linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_labs_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_labs_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -24635,47 +27530,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_labs(0);
   ;
   return 0;
 }
@@ -24702,45 +27561,49 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_labs_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_labs_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_link" >&6
+    if test x$glibcxx_cv_func___builtin_labs_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_labs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
+
+    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for _long double trig functions" >&5
-echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sqrtf declaration" >&5
+echo $ECHO_N "checking for __builtin_sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -24750,9 +27613,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _acosl _asinl _atanl \
-                                          _cosl _sinl _tanl \
-                                          _coshl _sinhl _tanhl; do echo "$x (0);"; done`
+ __builtin_sqrtf(0);
   ;
   return 0;
 }
@@ -24779,45 +27640,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_trig_use=yes
+  glibcxx_cv_func___builtin_sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_trig_use=no
+glibcxx_cv_func___builtin_sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
-  if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
-
-
-
-
-
-
-
 
+fi
 
-for ac_func in _acosl _asinl _atanl \
-                                          _cosl _sinl _tanl \
-                                          _coshl _sinhl _tanhl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_use" >&6
+  if test x$glibcxx_cv_func___builtin_sqrtf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sqrtf linkage" >&5
+echo $ECHO_N "checking for __builtin_sqrtf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sqrtf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sqrtf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -24828,47 +27679,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sqrtf(0);
   ;
   return 0;
 }
@@ -24895,44 +27710,48 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sqrtf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sqrtf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_link" >&6
+    if test x$glibcxx_cv_func___builtin_sqrtf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sqrtf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
+
+    fi
   fi
 
 
-  echo "$as_me:$LINENO: checking for _long double round functions" >&5
-echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sqrt declaration" >&5
+echo $ECHO_N "checking for __builtin_sqrt declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sqrt_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sqrt_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -24942,7 +27761,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _ceill _floorl; do echo "$x (0);"; done`
+ __builtin_sqrt(0);
   ;
   return 0;
 }
@@ -24969,36 +27788,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_round_use=yes
+  glibcxx_cv_func___builtin_sqrt_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_round_use=no
+glibcxx_cv_func___builtin_sqrt_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
-  if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
 
+fi
 
-for ac_func in _ceill _floorl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_use" >&6
+  if test x$glibcxx_cv_func___builtin_sqrt_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sqrt linkage" >&5
+echo $ECHO_N "checking for __builtin_sqrt linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sqrt_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sqrt_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -25009,47 +27827,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sqrt(0);
   ;
   return 0;
 }
@@ -25076,38 +27858,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sqrt_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sqrt_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
-
-  fi
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_link" >&6
+    if test x$glibcxx_cv_func___builtin_sqrt_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sqrt | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
-  LIBS="$ac_save_LIBS"
-  CXXFLAGS="$ac_save_CXXFLAGS"
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_abs declaration" >&5
-echo $ECHO_N "checking for __builtin_abs declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_abs_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_abs_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sqrtl declaration" >&5
+echo $ECHO_N "checking for __builtin_sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25129,7 +27909,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_abs(0);
+ __builtin_sqrtl(0);
   ;
   return 0;
 }
@@ -25156,12 +27936,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_abs_use=yes
+  glibcxx_cv_func___builtin_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_abs_use=no
+glibcxx_cv_func___builtin_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -25174,13 +27954,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_use" >&6
-  if test x$glibcxx_cv_func___builtin_abs_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_abs linkage" >&5
-echo $ECHO_N "checking for __builtin_abs linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_abs_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_abs_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_use" >&6
+  if test x$glibcxx_cv_func___builtin_sqrtl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sqrtl linkage" >&5
+echo $ECHO_N "checking for __builtin_sqrtl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sqrtl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sqrtl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25199,7 +27979,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_abs(0);
+ __builtin_sqrtl(0);
   ;
   return 0;
 }
@@ -25226,12 +28006,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_abs_link=yes
+  glibcxx_cv_func___builtin_sqrtl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_abs_link=no
+glibcxx_cv_func___builtin_sqrtl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -25239,10 +28019,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_link" >&6
-    if test x$glibcxx_cv_func___builtin_abs_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_abs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_link" >&6
+    if test x$glibcxx_cv_func___builtin_sqrtl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sqrtl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -25252,10 +28032,11 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_fabsf declaration" >&5
-echo $ECHO_N "checking for __builtin_fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_fabsf_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for __builtin_sinf declaration" >&5
+echo $ECHO_N "checking for __builtin_sinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sinf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25277,7 +28058,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabsf(0);
+ __builtin_sinf(0);
   ;
   return 0;
 }
@@ -25304,12 +28085,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsf_use=yes
+  glibcxx_cv_func___builtin_sinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsf_use=no
+glibcxx_cv_func___builtin_sinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -25322,13 +28103,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_use" >&6
-  if test x$glibcxx_cv_func___builtin_fabsf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_fabsf linkage" >&5
-echo $ECHO_N "checking for __builtin_fabsf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_fabsf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_fabsf_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_use" >&6
+  if test x$glibcxx_cv_func___builtin_sinf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sinf linkage" >&5
+echo $ECHO_N "checking for __builtin_sinf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sinf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sinf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25347,7 +28128,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabsf(0);
+ __builtin_sinf(0);
   ;
   return 0;
 }
@@ -25374,12 +28155,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsf_link=yes
+  glibcxx_cv_func___builtin_sinf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsf_link=no
+glibcxx_cv_func___builtin_sinf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -25387,10 +28168,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_link" >&6
-    if test x$glibcxx_cv_func___builtin_fabsf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_fabsf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_link" >&6
+    if test x$glibcxx_cv_func___builtin_sinf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sinf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -25400,10 +28181,10 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_fabs declaration" >&5
-echo $ECHO_N "checking for __builtin_fabs declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_fabs_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_fabs_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sin declaration" >&5
+echo $ECHO_N "checking for __builtin_sin declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sin_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sin_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25425,7 +28206,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabs(0);
+ __builtin_sin(0);
   ;
   return 0;
 }
@@ -25452,12 +28233,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabs_use=yes
+  glibcxx_cv_func___builtin_sin_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabs_use=no
+glibcxx_cv_func___builtin_sin_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -25470,13 +28251,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_use" >&6
-  if test x$glibcxx_cv_func___builtin_fabs_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_fabs linkage" >&5
-echo $ECHO_N "checking for __builtin_fabs linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_fabs_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_fabs_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_use" >&6
+  if test x$glibcxx_cv_func___builtin_sin_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sin linkage" >&5
+echo $ECHO_N "checking for __builtin_sin linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sin_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sin_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25495,7 +28276,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabs(0);
+ __builtin_sin(0);
   ;
   return 0;
 }
@@ -25522,12 +28303,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabs_link=yes
+  glibcxx_cv_func___builtin_sin_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabs_link=no
+glibcxx_cv_func___builtin_sin_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -25535,10 +28316,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_link" >&6
-    if test x$glibcxx_cv_func___builtin_fabs_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_fabs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_link" >&6
+    if test x$glibcxx_cv_func___builtin_sin_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sin | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -25548,10 +28329,10 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_fabsl declaration" >&5
-echo $ECHO_N "checking for __builtin_fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sinl declaration" >&5
+echo $ECHO_N "checking for __builtin_sinl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sinl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sinl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25573,7 +28354,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabsl(0);
+ __builtin_sinl(0);
   ;
   return 0;
 }
@@ -25600,12 +28381,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsl_use=yes
+  glibcxx_cv_func___builtin_sinl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsl_use=no
+glibcxx_cv_func___builtin_sinl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -25618,13 +28399,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_use" >&6
-  if test x$glibcxx_cv_func___builtin_fabsl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_fabsl linkage" >&5
-echo $ECHO_N "checking for __builtin_fabsl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_fabsl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_fabsl_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_use" >&6
+  if test x$glibcxx_cv_func___builtin_sinl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sinl linkage" >&5
+echo $ECHO_N "checking for __builtin_sinl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sinl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sinl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25643,7 +28424,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabsl(0);
+ __builtin_sinl(0);
   ;
   return 0;
 }
@@ -25670,12 +28451,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsl_link=yes
+  glibcxx_cv_func___builtin_sinl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsl_link=no
+glibcxx_cv_func___builtin_sinl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -25683,10 +28464,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_link" >&6
-    if test x$glibcxx_cv_func___builtin_fabsl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_fabsl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_link" >&6
+    if test x$glibcxx_cv_func___builtin_sinl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sinl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -25696,10 +28477,11 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_labs declaration" >&5
-echo $ECHO_N "checking for __builtin_labs declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_labs_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_labs_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for __builtin_cosf declaration" >&5
+echo $ECHO_N "checking for __builtin_cosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_cosf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_cosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25721,7 +28503,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_labs(0);
+ __builtin_cosf(0);
   ;
   return 0;
 }
@@ -25748,12 +28530,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_labs_use=yes
+  glibcxx_cv_func___builtin_cosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_labs_use=no
+glibcxx_cv_func___builtin_cosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -25766,13 +28548,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_use" >&6
-  if test x$glibcxx_cv_func___builtin_labs_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_labs linkage" >&5
-echo $ECHO_N "checking for __builtin_labs linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_labs_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_labs_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_use" >&6
+  if test x$glibcxx_cv_func___builtin_cosf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_cosf linkage" >&5
+echo $ECHO_N "checking for __builtin_cosf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_cosf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_cosf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25791,7 +28573,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_labs(0);
+ __builtin_cosf(0);
   ;
   return 0;
 }
@@ -25818,12 +28600,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_labs_link=yes
+  glibcxx_cv_func___builtin_cosf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_labs_link=no
+glibcxx_cv_func___builtin_cosf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -25831,10 +28613,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_link" >&6
-    if test x$glibcxx_cv_func___builtin_labs_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_labs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_link" >&6
+    if test x$glibcxx_cv_func___builtin_cosf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_cosf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -25844,11 +28626,10 @@ _ACEOF
   fi
 
 
-
-  echo "$as_me:$LINENO: checking for __builtin_sqrtf declaration" >&5
-echo $ECHO_N "checking for __builtin_sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_cos declaration" >&5
+echo $ECHO_N "checking for __builtin_cos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_cos_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_cos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25870,7 +28651,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_sqrtf(0);
+ __builtin_cos(0);
   ;
   return 0;
 }
@@ -25897,12 +28678,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtf_use=yes
+  glibcxx_cv_func___builtin_cos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtf_use=no
+glibcxx_cv_func___builtin_cos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -25915,13 +28696,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_use" >&6
-  if test x$glibcxx_cv_func___builtin_sqrtf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sqrtf linkage" >&5
-echo $ECHO_N "checking for __builtin_sqrtf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sqrtf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sqrtf_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_use" >&6
+  if test x$glibcxx_cv_func___builtin_cos_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_cos linkage" >&5
+echo $ECHO_N "checking for __builtin_cos linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_cos_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_cos_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25940,7 +28721,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_sqrtf(0);
+ __builtin_cos(0);
   ;
   return 0;
 }
@@ -25967,12 +28748,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtf_link=yes
+  glibcxx_cv_func___builtin_cos_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtf_link=no
+glibcxx_cv_func___builtin_cos_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -25980,10 +28761,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_link" >&6
-    if test x$glibcxx_cv_func___builtin_sqrtf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sqrtf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_link" >&6
+    if test x$glibcxx_cv_func___builtin_cos_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_cos | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -25993,10 +28774,10 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_sqrt declaration" >&5
-echo $ECHO_N "checking for __builtin_sqrt declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sqrt_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sqrt_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_cosl declaration" >&5
+echo $ECHO_N "checking for __builtin_cosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_cosl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_cosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -26018,7 +28799,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_sqrt(0);
+ __builtin_cosl(0);
   ;
   return 0;
 }
@@ -26045,12 +28826,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrt_use=yes
+  glibcxx_cv_func___builtin_cosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrt_use=no
+glibcxx_cv_func___builtin_cosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -26063,13 +28844,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_use" >&6
-  if test x$glibcxx_cv_func___builtin_sqrt_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sqrt linkage" >&5
-echo $ECHO_N "checking for __builtin_sqrt linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sqrt_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sqrt_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_use" >&6
+  if test x$glibcxx_cv_func___builtin_cosl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_cosl linkage" >&5
+echo $ECHO_N "checking for __builtin_cosl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_cosl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_cosl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -26088,7 +28869,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_sqrt(0);
+ __builtin_cosl(0);
   ;
   return 0;
 }
@@ -26115,12 +28896,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrt_link=yes
+  glibcxx_cv_func___builtin_cosl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrt_link=no
+glibcxx_cv_func___builtin_cosl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -26128,10 +28909,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_link" >&6
-    if test x$glibcxx_cv_func___builtin_sqrt_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sqrt | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_link" >&6
+    if test x$glibcxx_cv_func___builtin_cosl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_cosl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -26141,87 +28922,90 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_sqrtl declaration" >&5
-echo $ECHO_N "checking for __builtin_sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sqrtl_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+echo "$as_me:$LINENO: checking for main in -lm" >&5
+echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_main+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+
+
 int
 main ()
 {
- __builtin_sqrtl(0);
+main ();
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtl_use=yes
+  ac_cv_lib_m_main=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtl_use=no
+ac_cv_lib_m_main=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
+echo "${ECHO_T}$ac_cv_lib_m_main" >&6
+if test $ac_cv_lib_m_main = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
 
+  LIBS="-lm $LIBS"
 
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_use" >&6
-  if test x$glibcxx_cv_func___builtin_sqrtl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sqrtl linkage" >&5
-echo $ECHO_N "checking for __builtin_sqrtl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sqrtl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sqrtl_link+set}" = set; then
+
+for ac_func in copysignf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -26232,11 +29016,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sqrtl(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -26263,114 +29083,260 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtl_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtl_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
+done
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_link" >&6
-    if test x$glibcxx_cv_func___builtin_sqrtl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sqrtl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+
+for ac_func in __signbit
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
-    fi
-  fi
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
+#undef $ac_func
 
-  echo "$as_me:$LINENO: checking for __builtin_sinf declaration" >&5
-echo $ECHO_N "checking for __builtin_sinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sinf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sinf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
 else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
+fi
+done
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+for ac_func in __signbitf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sinf(0);
+return f != $ac_func;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinf_use=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinf_use=no
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+done
 
 
-fi
+          if test x$ac_cv_func_copysignl = x"yes"; then
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_use" >&6
-  if test x$glibcxx_cv_func___builtin_sinf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sinf linkage" >&5
-echo $ECHO_N "checking for __builtin_sinf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sinf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sinf_link+set}" = set; then
+for ac_func in __signbitl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -26381,11 +29347,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sinf(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -26412,58 +29414,52 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinf_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinf_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_link" >&6
-    if test x$glibcxx_cv_func___builtin_sinf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sinf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-    fi
-  fi
-
-
-  echo "$as_me:$LINENO: checking for __builtin_sin declaration" >&5
-echo $ECHO_N "checking for __builtin_sin declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sin_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sin_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
+fi
+done
 
+  fi
+
+  # Used in libmath/Makefile.am.
+  if test -n "$LIBMATHOBJS"; then
+    need_libmath=yes
+  fi
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+  # Test wchar.h for mbstate_t, which is needed for char_traits and
+  # others even if wchar_t support is not on.
+  echo "$as_me:$LINENO: checking for mbstate_t" >&5
+echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <wchar.h>
 int
 main ()
 {
- __builtin_sin(0);
+mbstate_t teststate;
   ;
   return 0;
 }
@@ -26477,7 +29473,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -26490,57 +29486,52 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sin_use=yes
+  have_mbstate_t=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sin_use=no
+have_mbstate_t=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
+echo "${ECHO_T}$have_mbstate_t" >&6
+  if test x"$have_mbstate_t" = xyes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MBSTATE_T 1
+_ACEOF
 
+  fi
 
-fi
+  # Sanity check for existence of ISO C99 headers for extended encoding.
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_use" >&6
-  if test x$glibcxx_cv_func___builtin_sin_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sin linkage" >&5
-echo $ECHO_N "checking for __builtin_sin linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sin_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sin_link+set}" = set; then
+for ac_header in wchar.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_sin(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -26554,67 +29545,141 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sin_link=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sin_link=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+ac_header_compiler=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_link" >&6
-    if test x$glibcxx_cv_func___builtin_sin_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sin | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
-
-    fi
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
   fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-  echo "$as_me:$LINENO: checking for __builtin_sinl declaration" >&5
-echo $ECHO_N "checking for __builtin_sinl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sinl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sinl_use+set}" = set; then
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+ ac_has_wchar_h=yes
+else
+  ac_has_wchar_h=no
+fi
 
+done
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+for ac_header in wctype.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_sinl(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -26625,7 +29690,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -26638,57 +29703,139 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinl_use=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinl_use=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
 fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_use" >&6
-  if test x$glibcxx_cv_func___builtin_sinl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sinl linkage" >&5
-echo $ECHO_N "checking for __builtin_sinl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sinl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sinl_link+set}" = set; then
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
 fi
-cat >conftest.$ac_ext <<_ACEOF
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+ ac_has_wctype_h=yes
+else
+  ac_has_wctype_h=no
+fi
+
+done
+
+
+  # Only continue checking if the ISO C99 headers exist and support is on.
+  if test x"$ac_has_wchar_h" = xyes &&
+     test x"$ac_has_wctype_h" = xyes &&
+     test x"$enable_c_mbchar" != xno; then
+
+    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
+    # numeric_limits can instantiate type_traits<wchar_t>
+    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
+echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <wchar.h>
 int
 main ()
 {
- __builtin_sinl(0);
+int i = WCHAR_MIN; int j = WCHAR_MAX;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -26702,65 +29849,40 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinl_link=yes
+  has_wchar_minmax=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinl_link=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+has_wchar_minmax=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
+echo "${ECHO_T}$has_wchar_minmax" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_link" >&6
-    if test x$glibcxx_cv_func___builtin_sinl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sinl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for __builtin_cosf declaration" >&5
-echo $ECHO_N "checking for __builtin_cosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_cosf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_cosf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+    # Test wchar.h for WEOF, which is what we use to determine whether
+    # to specialize for char_traits<wchar_t> or not.
+    echo "$as_me:$LINENO: checking for WEOF" >&5
+echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+
+      #include <wchar.h>
+      #include <stddef.h>
 int
 main ()
 {
- __builtin_cosf(0);
+wint_t i = WEOF;
   ;
   return 0;
 }
@@ -26774,7 +29896,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -26787,35 +29909,34 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosf_use=yes
+  has_weof=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosf_use=no
+has_weof=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+    echo "$as_me:$LINENO: result: $has_weof" >&5
+echo "${ECHO_T}$has_weof" >&6
 
+    # Tests for wide character functions used in char_traits<wchar_t>.
+    ac_wfuncs=yes
 
-fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_use" >&6
-  if test x$glibcxx_cv_func___builtin_cosf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_cosf linkage" >&5
-echo $ECHO_N "checking for __builtin_cosf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_cosf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_cosf_link+set}" = set; then
+
+
+
+
+for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -26826,11 +29947,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_cosf(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -26857,113 +30014,207 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosf_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosf_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  ac_wfuncs=no
 fi
+done
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_link" >&6
-    if test x$glibcxx_cv_func___builtin_cosf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_cosf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
+    # Checks for names injected into std:: by the c_std headers.
 
-    fi
-  fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_cos declaration" >&5
-echo $ECHO_N "checking for __builtin_cos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_cos_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_cos_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
 
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
+    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
+    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
+    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
+    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
+    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_cos(0);
+return f != $ac_func;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cos_use=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cos_use=no
+eval "$as_ac_var=no"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  ac_wfuncs=no
 fi
+done
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_use" >&6
-  if test x$glibcxx_cv_func___builtin_cos_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_cos linkage" >&5
-echo $ECHO_N "checking for __builtin_cos linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_cos_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_cos_link+set}" = set; then
+
+    # Checks for wide character functions that are not required
+    # for basic wchar_t support.  Don't disable support if they are missing.
+    # Injection of these is wrapped with guard macros.
+
+
+
+
+
+for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -26974,11 +30225,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_cos(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -27005,61 +30292,62 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cos_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cos_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_link" >&6
-    if test x$glibcxx_cv_func___builtin_cos_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_cos | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+fi
+done
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
 
+    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
+echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
+    if test x"$has_weof" = xyes &&
+       test x"$has_wchar_minmax" = xyes &&
+       test x"$ac_wfuncs" = xyes;
+    then
+      ac_isoC99_wchar_t=yes
+    else
+      ac_isoC99_wchar_t=no
     fi
-  fi
-
+    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
+echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
 
-  echo "$as_me:$LINENO: checking for __builtin_cosl declaration" >&5
-echo $ECHO_N "checking for __builtin_cosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_cosl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_cosl_use+set}" = set; then
+    # Use iconv for wchar_t to char conversions. As such, check for
+    # X/Open Portability Guide, version 2 features (XPG2).
+    if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking iconv.h usability" >&5
+echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_cosl(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <iconv.h>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -27070,7 +30358,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -27083,57 +30371,131 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosl_use=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosl_use=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
+# Is the header present?
+echo "$as_me:$LINENO: checking iconv.h presence" >&5
+echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <iconv.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
 fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_use" >&6
-  if test x$glibcxx_cv_func___builtin_cosl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_cosl linkage" >&5
-echo $ECHO_N "checking for __builtin_cosl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_cosl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_cosl_link+set}" = set; then
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  ac_cv_header_iconv_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
 fi
+if test $ac_cv_header_iconv_h = yes; then
+  ac_has_iconv_h=yes
+else
+  ac_has_iconv_h=no
+fi
+
+
+    if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking langinfo.h usability" >&5
+echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_cosl(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <langinfo.h>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -27147,122 +30509,123 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosl_link=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosl_link=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+ac_header_compiler=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_link" >&6
-    if test x$glibcxx_cv_func___builtin_cosl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_cosl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
-
-    fi
-  fi
-
-
-
-
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
+# Is the header present?
+echo "$as_me:$LINENO: checking langinfo.h presence" >&5
+echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-
-int
-main ()
-{
-main ();
-  ;
-  return 0;
-}
+#include <langinfo.h>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+  ac_header_preproc=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-  LIBS="-lm $LIBS"
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_langinfo_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 
 fi
+if test $ac_cv_header_langinfo_h = yes; then
+  ac_has_langinfo_h=yes
+else
+  ac_has_langinfo_h=no
+fi
 
 
-for ac_func in copysignf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+
+    # Check for existence of libiconv.a providing XPG2 wchar_t support.
+    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
+echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
+if test "${ac_cv_lib_iconv_iconv+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-liconv  $LIBS"
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -27273,47 +30636,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
-{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+char iconv ();
 int
 main ()
 {
-return f != $ac_func;
+iconv ();
   ;
   return 0;
 }
@@ -27340,31 +30674,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_cv_lib_iconv_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_cv_lib_iconv_iconv=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
+echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
+echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
+if test $ac_cv_lib_iconv_iconv = yes; then
+  LIBICONV="-liconv"
 fi
-done
+
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
 
 
 
-for ac_func in __signbit
+
+
+
+for ac_func in iconv_open iconv_close iconv nl_langinfo
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -27466,126 +30801,126 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_XPG2funcs=yes
 else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
+  ac_XPG2funcs=no
 fi
 done
 
 
+    LIBS="$ac_save_LIBS"
 
-for ac_func in __signbitf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
+echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
+    if test x"$ac_has_iconv_h" = xyes &&
+       test x"$ac_has_langinfo_h" = xyes &&
+       test x"$ac_XPG2funcs" = xyes;
+    then
+      ac_XPG2_wchar_t=yes
+    else
+      ac_XPG2_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
+echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
+
+    # At the moment, only enable wchar_t specializations if all the
+    # above support is present.
+    if test x"$ac_isoC99_wchar_t" = xyes &&
+       test x"$ac_XPG2_wchar_t" = xyes;
+    then
+      cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
+_ACEOF
+
+      enable_wchar_t=yes
+    fi
+  fi
+  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
+echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
+  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
+echo "${ECHO_T}$enable_wchar_t" >&6
+
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+
+  echo "$as_me:$LINENO: checking for strtold declaration" >&5
+echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <stdlib.h>
 int
 main ()
 {
-return f != $ac_func;
+ strtold(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func_strtold_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+glibcxx_cv_func_strtold_use=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
-fi
-done
 
+fi
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
+  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
 
-for ac_func in __signbitl
+for ac_func in strtold
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -27688,35 +31023,38 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
   fi
 
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
+
+  echo "$as_me:$LINENO: checking for strtof declaration" >&5
+echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
 
 
-  # Test wchar.h for mbstate_t, which is needed for char_traits and
-  # others even if wchar_t support is not on.
-  echo "$as_me:$LINENO: checking for mbstate_t" >&5
-echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
-  cat >conftest.$ac_ext <<_ACEOF
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <wchar.h>
+#include <stdlib.h>
 int
 main ()
 {
-mbstate_t teststate;
+ strtof(0, 0);
   ;
   return 0;
 }
@@ -27730,7 +31068,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -27743,52 +31081,95 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  have_mbstate_t=yes
+  glibcxx_cv_func_strtof_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-have_mbstate_t=no
+glibcxx_cv_func_strtof_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
-echo "${ECHO_T}$have_mbstate_t" >&6
-  if test x"$have_mbstate_t" = xyes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MBSTATE_T 1
-_ACEOF
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  fi
 
-  # Sanity check for existence of ISO C99 headers for extended encoding.
+fi
 
-for ac_header in wchar.h
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
+  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
+
+for ac_func in strtof
 do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -27802,119 +31183,42 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
+eval "$as_ac_var=no"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-  ac_header_preproc=no
 fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
+done
 
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+  fi
 
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
- ac_has_wchar_h=yes
-else
-  ac_has_wchar_h=no
-fi
 
-done
+  CXXFLAGS="$ac_save_CXXFLAGS"
 
 
-for ac_header in wctype.h
+  # For showmanyc_helper().
+
+
+for ac_header in sys/ioctl.h sys/filio.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -28058,41 +31362,41 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
- ac_has_wctype_h=yes
-else
-  ac_has_wctype_h=no
+
 fi
 
 done
 
 
-  # Only continue checking if the ISO C99 headers exist and support is on.
-  if test x"$ac_has_wchar_h" = xyes &&
-     test x"$ac_has_wctype_h" = xyes &&
-     test x"$enable_c_mbchar" != xno; then
+  if test "${glibcxx_cv_POLL+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
-    # numeric_limits can instantiate type_traits<wchar_t>
-    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
-echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <wchar.h>
+#include <poll.h>
 int
 main ()
 {
-int i = WCHAR_MIN; int j = WCHAR_MAX;
+struct pollfd pfd[1];
+       pfd[0].events = POLLIN;
+       poll(pfd, 1, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -28106,47 +31410,61 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  has_wchar_minmax=yes
+  glibcxx_cv_POLL=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-has_wchar_minmax=no
+glibcxx_cv_POLL=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
-echo "${ECHO_T}$has_wchar_minmax" >&6
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
-    # Test wchar.h for WEOF, which is what we use to determine whether
-    # to specialize for char_traits<wchar_t> or not.
-    echo "$as_me:$LINENO: checking for WEOF" >&5
-echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
+fi
+
+  if test $glibcxx_cv_POLL = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_POLL 1
+_ACEOF
+
+  fi
+
+
+  if test "${glibcxx_cv_S_ISREG+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-      #include <wchar.h>
-      #include <stddef.h>
+#include <sys/stat.h>
 int
 main ()
 {
-wint_t i = WEOF;
+struct stat buffer;
+       fstat(0, &buffer);
+       S_ISREG(buffer.st_mode);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -28160,40 +31478,29 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  has_weof=yes
+  glibcxx_cv_S_ISREG=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-has_weof=no
+glibcxx_cv_S_ISREG=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_weof" >&5
-echo "${ECHO_T}$has_weof" >&6
-
-    # Tests for wide character functions used in char_traits<wchar_t>.
-    ac_wfuncs=yes
-
-
-
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
+fi
 
-for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  if test "${glibcxx_cv_S_IFREG+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -28204,47 +31511,13 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <sys/stat.h>
 int
 main ()
 {
-return f != $ac_func;
+struct stat buffer;
+       fstat(0, &buffer);
+       S_IFREG & buffer.st_mode;
   ;
   return 0;
 }
@@ -28271,148 +31544,60 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_S_IFREG=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_S_IFREG=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
-else
-  ac_wfuncs=no
 fi
-done
-
-
-    # Checks for names injected into std:: by the c_std headers.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
 
+  if test $glibcxx_cv_S_ISREG = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_ISREG 1
+_ACEOF
 
+  elif test $glibcxx_cv_S_IFREG = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_IFREG 1
+_ACEOF
 
+  fi
 
 
+  # For xsputn_2().
 
-for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
-    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
-    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
-    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
-    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
-    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
+for ac_header in sys/uio.h
 do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -28426,52 +31611,121 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_header_compiler=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  ac_wfuncs=no
 fi
-done
-
-
-    # Checks for wide character functions that are not required
-    # for basic wchar_t support.  Don't disable support if they are missing.
-    # Injection of these is wrapped with guard macros.
-
-
 
+done
 
 
-for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  if test "${glibcxx_cv_WRITEV+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -28482,47 +31736,12 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <sys/uio.h>
 int
 main ()
 {
-return f != $ac_func;
+struct iovec iov[2];
+       writev(0, iov, 0);
   ;
   return 0;
 }
@@ -28549,62 +31768,46 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_WRITEV=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_WRITEV=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+
+  if test $glibcxx_cv_WRITEV = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_WRITEV 1
 _ACEOF
 
-fi
-done
+  fi
 
 
-    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
-echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
-    if test x"$has_weof" = xyes &&
-       test x"$has_wchar_minmax" = xyes &&
-       test x"$ac_wfuncs" = xyes;
-    then
-      ac_isoC99_wchar_t=yes
-    else
-      ac_isoC99_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
-echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
+  # For the __streamoff_base_type typedef.
 
-    # Use iconv for wchar_t to char conversions. As such, check for
-    # X/Open Portability Guide, version 2 features (XPG2).
-    if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
+  if test "${glibcxx_cv_INT64_T+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking iconv.h usability" >&5
-echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <iconv.h>
+#include <stdint.h>
+int
+main ()
+{
+int64_t var;
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -28628,119 +31831,132 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  glibcxx_cv_INT64_T=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
+glibcxx_cv_INT64_T=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
 
-# Is the header present?
-echo "$as_me:$LINENO: checking iconv.h presence" >&5
-echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
+fi
+
+  if test $glibcxx_cv_INT64_T = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_INT64_T 1
+_ACEOF
+
+  fi
+
+
+  # For LFS support.
+
+
+
+  ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS -fno-exceptions"
+  if test "${glibcxx_cv_LFS+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <iconv.h>
+#include <unistd.h>
+       #include <stdio.h>
+       #include <sys/stat.h>
+
+int
+main ()
+{
+FILE* fp;
+       fopen64("t", "w");
+       fseeko64(fp, 0, SEEK_CUR);
+       ftello64(fp);
+       lseek64(1, 0, SEEK_CUR);
+       struct stat64 buf;
+       fstat64(1, &buf);
+  ;
+  return 0;
+}
 _ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_LFS=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
+glibcxx_cv_LFS=no
 fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_header_iconv_h=$ac_header_preproc
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 
-fi
-if test $ac_cv_header_iconv_h = yes; then
-  ac_has_iconv_h=yes
-else
-  ac_has_iconv_h=no
-fi
+  if test $glibcxx_cv_LFS = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_LFS 1
+_ACEOF
+
+  fi
+  CXXFLAGS="$ac_save_CXXFLAGS"
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
-    if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
+
+
+  if test "${ac_cv_header_locale_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for locale.h" >&5
+echo $ECHO_N "checking for locale.h... $ECHO_C" >&6
+if test "${ac_cv_header_locale_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+echo "$as_me:$LINENO: result: $ac_cv_header_locale_h" >&5
+echo "${ECHO_T}$ac_cv_header_locale_h" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking langinfo.h usability" >&5
-echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking locale.h usability" >&5
+echo $ECHO_N "checking locale.h usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -28748,7 +31964,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <langinfo.h>
+#include <locale.h>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -28784,15 +32000,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking langinfo.h presence" >&5
-echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking locale.h presence" >&5
+echo $ECHO_N "checking locale.h presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <langinfo.h>
+#include <locale.h>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -28826,25 +32042,25 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: locale.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: locale.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: locale.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: locale.h: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: locale.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: locale.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: locale.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: locale.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: locale.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: locale.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: locale.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: locale.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: locale.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: locale.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: locale.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: locale.h: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
@@ -28855,34 +32071,25 @@ _ASBOX
       sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
-echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
+echo "$as_me:$LINENO: checking for locale.h" >&5
+echo $ECHO_N "checking for locale.h... $ECHO_C" >&6
+if test "${ac_cv_header_locale_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_cv_header_langinfo_h=$ac_header_preproc
+  ac_cv_header_locale_h=$ac_header_preproc
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+echo "$as_me:$LINENO: result: $ac_cv_header_locale_h" >&5
+echo "${ECHO_T}$ac_cv_header_locale_h" >&6
 
 fi
-if test $ac_cv_header_langinfo_h = yes; then
-  ac_has_langinfo_h=yes
-else
-  ac_has_langinfo_h=no
-fi
-
-
+if test $ac_cv_header_locale_h = yes; then
 
-    # Check for existence of libiconv.a providing XPG2 wchar_t support.
-    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
-echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
-if test "${ac_cv_lib_iconv_iconv+set}" = set; then
+    echo "$as_me:$LINENO: checking for LC_MESSAGES" >&5
+echo $ECHO_N "checking for LC_MESSAGES... $ECHO_C" >&6
+if test "${ac_cv_val_LC_MESSAGES+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-liconv  $LIBS"
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -28893,18 +32100,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char iconv ();
+#include <locale.h>
 int
 main ()
 {
-iconv ();
+return LC_MESSAGES
   ;
   return 0;
 }
@@ -28931,98 +32131,51 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_iconv_iconv=yes
+  ac_cv_val_LC_MESSAGES=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_iconv_iconv=no
+ac_cv_val_LC_MESSAGES=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
-echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
-if test $ac_cv_lib_iconv_iconv = yes; then
-  LIBICONV="-liconv"
 fi
+echo "$as_me:$LINENO: result: $ac_cv_val_LC_MESSAGES" >&5
+echo "${ECHO_T}$ac_cv_val_LC_MESSAGES" >&6
+    if test $ac_cv_val_LC_MESSAGES = yes; then
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_LC_MESSAGES 1
+_ACEOF
 
-    ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIBICONV"
-
+    fi
 
+fi
 
 
 
 
-for ac_func in iconv_open iconv_close iconv nl_langinfo
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <setjmp.h>
 int
 main ()
 {
-return f != $ac_func;
+sigjmp_buf env;
+     while (! sigsetjmp (env, 1))
+       siglongjmp (env, 1);
+
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -29036,102 +32189,55 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
- ac_XPG2funcs=yes
-else
-  ac_XPG2funcs=no
-fi
-done
-
-
-    LIBS="$ac_save_LIBS"
-
-    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
-echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
-    if test x"$ac_has_iconv_h" = xyes &&
-       test x"$ac_has_langinfo_h" = xyes &&
-       test x"$ac_XPG2funcs" = xyes;
-    then
-      ac_XPG2_wchar_t=yes
-    else
-      ac_XPG2_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
-echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
-
-    # At the moment, only enable wchar_t specializations if all the
-    # above support is present.
-    if test x"$ac_isoC99_wchar_t" = xyes &&
-       test x"$ac_XPG2_wchar_t" = xyes;
-    then
-      cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_WCHAR_T 1
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_SIGSETJMP 1
 _ACEOF
 
-      enable_wchar_t=yes
-    fi
-  fi
-  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
-echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
-  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
-echo "${ECHO_T}$enable_wchar_t" >&6
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+  if test x$gcc_no_link = xyes; then
+  if test "x${ac_cv_func_mmap_fixed_mapped+set}" != xset; then
+    ac_cv_func_mmap_fixed_mapped=no
+  fi
+fi
+if test "x${ac_cv_func_mmap_fixed_mapped+set}" != xset; then
 
 
-  echo "$as_me:$LINENO: checking for strtold declaration" >&5
-echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
+for ac_header in stdlib.h unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
-int
-main ()
-{
- strtold(0, 0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -29142,7 +32248,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -29155,29 +32261,111 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtold_use=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtold_use=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
 fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
-  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
-for ac_func in strtold
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_func in getpagesize
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -29283,199 +32471,368 @@ _ACEOF
 fi
 done
 
-  fi
-
-
-  echo "$as_me:$LINENO: checking for strtof declaration" >&5
-echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
+echo "$as_me:$LINENO: checking for working mmap" >&5
+echo $ECHO_N "checking for working mmap... $ECHO_C" >&6
+if test "${ac_cv_func_mmap_fixed_mapped+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+  if test "$cross_compiling" = yes; then
+  ac_cv_func_mmap_fixed_mapped=no
+else
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+$ac_includes_default
+/* malloc might have been renamed as rpl_malloc. */
+#undef malloc
+
+/* Thanks to Mike Haertel and Jim Avera for this test.
+   Here is a matrix of mmap possibilities:
+	mmap private not fixed
+	mmap private fixed at somewhere currently unmapped
+	mmap private fixed at somewhere already mapped
+	mmap shared not fixed
+	mmap shared fixed at somewhere currently unmapped
+	mmap shared fixed at somewhere already mapped
+   For private mappings, we should verify that changes cannot be read()
+   back from the file, nor mmap's back from the file at a different
+   address.  (There have been systems where private was not correctly
+   implemented like the infamous i386 svr4.0, and systems where the
+   VM page cache was not coherent with the file system buffer cache
+   like early versions of FreeBSD and possibly contemporary NetBSD.)
+   For shared mappings, we should conversely verify that changes get
+   propagated back to all the places they're supposed to be.
+
+   Grep wants private fixed already mapped.
+   The main things grep needs to know about mmap are:
+   * does it exist and is it safe to write into the mmap'd area
+   * how to use it (BSD variants)  */
+
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#if !STDC_HEADERS && !HAVE_STDLIB_H
+char *malloc ();
+#endif
+
+/* This mess was copied from the GNU getpagesize.h.  */
+#if !HAVE_GETPAGESIZE
+/* Assume that all systems that can run configure have sys/param.h.  */
+# if !HAVE_SYS_PARAM_H
+#  define HAVE_SYS_PARAM_H 1
+# endif
+
+# ifdef _SC_PAGESIZE
+#  define getpagesize() sysconf(_SC_PAGESIZE)
+# else /* no _SC_PAGESIZE */
+#  if HAVE_SYS_PARAM_H
+#   include <sys/param.h>
+#   ifdef EXEC_PAGESIZE
+#    define getpagesize() EXEC_PAGESIZE
+#   else /* no EXEC_PAGESIZE */
+#    ifdef NBPG
+#     define getpagesize() NBPG * CLSIZE
+#     ifndef CLSIZE
+#      define CLSIZE 1
+#     endif /* no CLSIZE */
+#    else /* no NBPG */
+#     ifdef NBPC
+#      define getpagesize() NBPC
+#     else /* no NBPC */
+#      ifdef PAGESIZE
+#       define getpagesize() PAGESIZE
+#      endif /* PAGESIZE */
+#     endif /* no NBPC */
+#    endif /* no NBPG */
+#   endif /* no EXEC_PAGESIZE */
+#  else /* no HAVE_SYS_PARAM_H */
+#   define getpagesize() 8192	/* punt totally */
+#  endif /* no HAVE_SYS_PARAM_H */
+# endif /* no _SC_PAGESIZE */
+
+#endif /* no HAVE_GETPAGESIZE */
+
 int
 main ()
 {
- strtof(0, 0);
-  ;
-  return 0;
+  char *data, *data2, *data3;
+  int i, pagesize;
+  int fd;
+
+  pagesize = getpagesize ();
+
+  /* First, make a file with some known garbage in it. */
+  data = (char *) malloc (pagesize);
+  if (!data)
+    exit (1);
+  for (i = 0; i < pagesize; ++i)
+    *(data + i) = rand ();
+  umask (0);
+  fd = creat ("conftest.mmap", 0600);
+  if (fd < 0)
+    exit (1);
+  if (write (fd, data, pagesize) != pagesize)
+    exit (1);
+  close (fd);
+
+  /* Next, try to mmap the file at a fixed address which already has
+     something else allocated at it.  If we can, also make sure that
+     we see the same garbage.  */
+  fd = open ("conftest.mmap", O_RDWR);
+  if (fd < 0)
+    exit (1);
+  data2 = (char *) malloc (2 * pagesize);
+  if (!data2)
+    exit (1);
+  data2 += (pagesize - ((long) data2 & (pagesize - 1))) & (pagesize - 1);
+  if (data2 != mmap (data2, pagesize, PROT_READ | PROT_WRITE,
+		     MAP_PRIVATE | MAP_FIXED, fd, 0L))
+    exit (1);
+  for (i = 0; i < pagesize; ++i)
+    if (*(data + i) != *(data2 + i))
+      exit (1);
+
+  /* Finally, make sure that changes to the mapped area do not
+     percolate back to the file as seen by read().  (This is a bug on
+     some variants of i386 svr4.0.)  */
+  for (i = 0; i < pagesize; ++i)
+    *(data2 + i) = *(data2 + i) + 1;
+  data3 = (char *) malloc (pagesize);
+  if (!data3)
+    exit (1);
+  if (read (fd, data3, pagesize) != pagesize)
+    exit (1);
+  for (i = 0; i < pagesize; ++i)
+    if (*(data + i) != *(data3 + i))
+      exit (1);
+  close (fd);
+  exit (0);
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtof_use=yes
+  ac_cv_func_mmap_fixed_mapped=yes
 else
-  echo "$as_me: failed program was:" >&5
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtof_use=no
+( exit $ac_status )
+ac_cv_func_mmap_fixed_mapped=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_mmap_fixed_mapped" >&5
+echo "${ECHO_T}$ac_cv_func_mmap_fixed_mapped" >&6
+if test $ac_cv_func_mmap_fixed_mapped = yes; then
 
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_MMAP 1
+_ACEOF
 
 fi
+rm -f conftest.mmap
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
-  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
+fi
 
-for ac_func in strtof
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+
+  # This lets us hard-code the functionality we know we'll have in the cross
+  # target environment.  "Let" is a sugar-coated word placed on an especially
+  # dull and tedious hack, actually.
+  #
+  # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
+  # that involve linking, can't be used:
+  #    "cannot open sim-crt0.o"
+  #    "cannot open crt0.o"
+  # etc.  All this is because there currently exists no unified, consistent
+  # way for top level CC information to be passed down to target directories:
+  # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
+  # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
+  # crosses can be removed.
+
+  # If Canadian cross, then don't pick up tools from the build directory.
+  # Used only in GLIBCXX_EXPORT_INCLUDES.
+  if test -n "$with_cross_host" &&
+     test x"$build_alias" != x"$with_cross_host" &&
+     test x"$build" != x"$target";
+  then
+    CANADIAN=yes
+  else
+    CANADIAN=no
+  fi
+
+  # Construct crosses by hand, eliminating bits that need ld...
+  # GLIBCXX_CHECK_COMPILER_FEATURES
+  # GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
+  # GLIBCXX_CHECK_MATH_SUPPORT
+
+  # First, test for "known" system libraries.  We may be using newlib even
+  # on a hosted environment.
+  if test "x${with_newlib}" = "xyes"; then
+    os_include_dir="os/newlib"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOT 1
+_ACEOF
+
+
+    # GLIBCXX_CHECK_STDLIB_SUPPORT
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_STRTOF 1
+_ACEOF
+
+    # AC_FUNC_MMAP
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MMAP 1
+_ACEOF
+
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ACOSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ASINF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATAN2F 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATANF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_CEILF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGN 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGNF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSHF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_EXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FABSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FLOORF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FMODF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FREXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LDEXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOG10F 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOGF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MODFF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_POWF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINF 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
 
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINHF 1
+_ACEOF
 
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SQRTF 1
+_ACEOF
 
-#undef $ac_func
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANF 1
+_ACEOF
 
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANHF 1
+_ACEOF
 
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_ISREG 1
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_IFREG 1
 _ACEOF
 
-fi
-done
+  else
 
-  fi
+# Base decisions on target environment.
+case "${host}" in
+  arm*-*-symbianelf*)
+    # This is a freestanding configuration; there is nothing to do here.
+    ;;
 
+  *-darwin*)
+    # Darwin versions vary, but the linker should work in a cross environment,
+    # so we just check for all the features here.
+    # Check for available headers.
 
-  CXXFLAGS="$ac_save_CXXFLAGS"
 
 
-  # For showmanyc_helper().
 
 
-for ac_header in sys/ioctl.h sys/filio.h
+
+
+
+
+
+
+
+
+for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
+    machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \
+    sys/types.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -29625,79 +32982,112 @@ fi
 done
 
 
-  if test "${glibcxx_cv_POLL+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
 
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  # All these tests are for C++; save the language and the compiler flags.
+  # The CXXFLAGS thing is suspicious, but based on similar bits previously
+  # found in GLIBCXX_CONFIGURE.
+
+
+  ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+
+  # Check for maintainer-mode bits.
+  if test x"$USE_MAINTAINER_MODE" = xno; then
+    WERROR=''
+  else
+    WERROR='-Werror'
+  fi
+
+  # Check for -ffunction-sections -fdata-sections
+  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
+echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
+  CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <poll.h>
+
 int
 main ()
 {
-struct pollfd pfd[1];
-       pfd[0].events = POLLIN;
-       poll(pfd, 1, 0);
+int foo;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_POLL=yes
+  ac_fdsections=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_POLL=no
+ac_fdsections=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  if test "$ac_test_CXXFLAGS" = set; then
+    CXXFLAGS="$ac_save_CXXFLAGS"
+  else
+    # this is the suspicious part
+    CXXFLAGS=''
+  fi
+  if test x"$ac_fdsections" = x"yes"; then
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+  fi
+  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
+echo "${ECHO_T}$ac_fdsections" >&6
 
-fi
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  if test $glibcxx_cv_POLL = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_POLL 1
-_ACEOF
 
-  fi
 
 
-  if test "${glibcxx_cv_S_ISREG+set}" = set; then
+    # Don't call GLIBCXX_CHECK_LINKER_FEATURES, Darwin doesn't have a GNU ld
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+    echo "$as_me:$LINENO: checking for sin in -lm" >&5
+echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_sin+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-    if test x$gcc_no_link = xyes; then
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -29708,13 +33098,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <sys/stat.h>
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sin ();
 int
 main ()
 {
-struct stat buffer;
-       fstat(0, &buffer);
-       S_ISREG(buffer.st_mode);
+sin ();
   ;
   return 0;
 }
@@ -29741,120 +33136,174 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_S_ISREG=yes
+  ac_cv_lib_m_sin=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_S_ISREG=no
+ac_cv_lib_m_sin=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
+echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
+if test $ac_cv_lib_m_sin = yes; then
+  libm="-lm"
 fi
 
-  if test "${glibcxx_cv_S_IFREG+set}" = set; then
+  ac_save_LIBS="$LIBS"
+  LIBS="$LIBS $libm"
+
+
+
+  echo "$as_me:$LINENO: checking for isinf declaration" >&5
+echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <sys/stat.h>
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
-struct stat buffer;
-       fstat(0, &buffer);
-       S_IFREG & buffer.st_mode;
+ isinf(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_S_IFREG=yes
+  glibcxx_cv_func_isinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_S_IFREG=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+glibcxx_cv_func_isinf_use=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  if test $glibcxx_cv_S_ISREG = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_ISREG 1
-_ACEOF
 
-  elif test $glibcxx_cv_S_IFREG = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_IFREG 1
-_ACEOF
+fi
 
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
 
+  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
 
-  # For xsputn_2().
-
-for ac_header in sys/uio.h
+for ac_func in isinf
 do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -29868,121 +33317,122 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
+eval "$as_ac_var=no"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
+echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <$ac_header>
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _isinf(0);
+  ;
+  return 0;
+}
 _ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isinf_use=yes
 else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+glibcxx_cv_func__isinf_use=no
 fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
 fi
 
-done
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
 
+    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
 
-  if test "${glibcxx_cv_WRITEV+set}" = set; then
+for ac_func in _isinf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-    if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -29993,12 +33443,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <sys/uio.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-struct iovec iov[2];
-       writev(0, iov, 0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -30025,43 +33510,61 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_WRITEV=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_WRITEV=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-  if test $glibcxx_cv_WRITEV = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_WRITEV 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
+fi
+done
+
+    fi
   fi
 
 
-  # For the __streamoff_base_type typedef.
 
-  if test "${glibcxx_cv_INT64_T+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnan declaration" >&5
+echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
-    cat >conftest.$ac_ext <<_ACEOF
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdint.h>
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
-int64_t var;
+ isnan(0);
   ;
   return 0;
 }
@@ -30075,7 +33578,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -30088,42 +33591,38 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_INT64_T=yes
+  glibcxx_cv_func_isnan_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_INT64_T=no
+glibcxx_cv_func_isnan_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
 
-  if test $glibcxx_cv_INT64_T = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_INT64_T 1
-_ACEOF
+fi
 
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
 
+  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
 
-  # For LFS support.
-
-
-
-  ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS="$CXXFLAGS -fno-exceptions"
-  if test "${glibcxx_cv_LFS+set}" = set; then
+for ac_func in isnan
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-    if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -30134,17 +33633,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <unistd.h>
-       #include <stdio.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
-FILE* fp;
-       fopen64("t", "w");
-       fseeko64(fp, 0, SEEK_CUR);
-       ftello64(fp);
-       lseek64(1, 0, SEEK_CUR);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -30158,7 +33687,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -30171,54 +33700,61 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_LFS=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_LFS=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
 fi
+done
 
-  if test $glibcxx_cv_LFS = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_LFS 1
-_ACEOF
+  else
 
-  fi
-  CXXFLAGS="$ac_save_CXXFLAGS"
-  ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
+echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  if test "${ac_cv_header_locale_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for locale.h" >&5
-echo $ECHO_N "checking for locale.h... $ECHO_C" >&6
-if test "${ac_cv_header_locale_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_locale_h" >&5
-echo "${ECHO_T}$ac_cv_header_locale_h" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking locale.h usability" >&5
-echo $ECHO_N "checking locale.h usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <locale.h>
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _isnan(0);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -30229,7 +33765,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -30242,105 +33778,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  glibcxx_cv_func__isnan_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
+glibcxx_cv_func__isnan_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-# Is the header present?
-echo "$as_me:$LINENO: checking locale.h presence" >&5
-echo $ECHO_N "checking locale.h presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <locale.h>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
 fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
 
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: locale.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: locale.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: locale.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: locale.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: locale.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: locale.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: locale.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: locale.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: locale.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: locale.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: locale.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: locale.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: locale.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: locale.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: locale.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: locale.h: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for locale.h" >&5
-echo $ECHO_N "checking for locale.h... $ECHO_C" >&6
-if test "${ac_cv_header_locale_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_header_locale_h=$ac_header_preproc
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_locale_h" >&5
-echo "${ECHO_T}$ac_cv_header_locale_h" >&6
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
 
-fi
-if test $ac_cv_header_locale_h = yes; then
+    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
 
-    echo "$as_me:$LINENO: checking for LC_MESSAGES" >&5
-echo $ECHO_N "checking for LC_MESSAGES... $ECHO_C" >&6
-if test "${ac_cv_val_LC_MESSAGES+set}" = set; then
+for ac_func in _isnan
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   if test x$gcc_no_link = xyes; then
@@ -30354,11 +33820,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <locale.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-return LC_MESSAGES
+return f != $ac_func;
   ;
   return 0;
 }
@@ -30385,113 +33887,64 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_val_LC_MESSAGES=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_val_LC_MESSAGES=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
 fi
-echo "$as_me:$LINENO: result: $ac_cv_val_LC_MESSAGES" >&5
-echo "${ECHO_T}$ac_cv_val_LC_MESSAGES" >&6
-    if test $ac_cv_val_LC_MESSAGES = yes; then
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_LC_MESSAGES 1
-_ACEOF
-
-    fi
-
-fi
-
-
-
-
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <setjmp.h>
-int
-main ()
-{
-sigjmp_buf env;
-     while (! sigsetjmp (env, 1))
-       siglongjmp (env, 1);
-
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SIGSETJMP 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-
-  if test x$gcc_no_link = xyes; then
-  if test "x${ac_cv_func_mmap_fixed_mapped+set}" != xset; then
-    ac_cv_func_mmap_fixed_mapped=no
-  fi
 fi
-if test "x${ac_cv_func_mmap_fixed_mapped+set}" != xset; then
-
+done
 
-for ac_header in stdlib.h unistd.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+    fi
+  fi
+
+
+
+  echo "$as_me:$LINENO: checking for finite declaration" >&5
+echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finite_use+set} != xset; then
+    if test "${glibcxx_cv_func_finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ finite(0);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -30502,7 +33955,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -30515,111 +33968,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  glibcxx_cv_func_finite_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
+glibcxx_cv_func_finite_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
 
 fi
 
-done
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
 
+  if test x$glibcxx_cv_func_finite_use = x"yes"; then
 
-for ac_func in getpagesize
+for ac_func in finite
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -30725,394 +34097,227 @@ _ACEOF
 fi
 done
 
-echo "$as_me:$LINENO: checking for working mmap" >&5
-echo $ECHO_N "checking for working mmap... $ECHO_C" >&6
-if test "${ac_cv_func_mmap_fixed_mapped+set}" = set; then
+  else
+
+  echo "$as_me:$LINENO: checking for _finite declaration" >&5
+echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finite_use+set} != xset; then
+    if test "${glibcxx_cv_func__finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test "$cross_compiling" = yes; then
-  ac_cv_func_mmap_fixed_mapped=no
-else
-  cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-/* malloc might have been renamed as rpl_malloc. */
-#undef malloc
-
-/* Thanks to Mike Haertel and Jim Avera for this test.
-   Here is a matrix of mmap possibilities:
-	mmap private not fixed
-	mmap private fixed at somewhere currently unmapped
-	mmap private fixed at somewhere already mapped
-	mmap shared not fixed
-	mmap shared fixed at somewhere currently unmapped
-	mmap shared fixed at somewhere already mapped
-   For private mappings, we should verify that changes cannot be read()
-   back from the file, nor mmap's back from the file at a different
-   address.  (There have been systems where private was not correctly
-   implemented like the infamous i386 svr4.0, and systems where the
-   VM page cache was not coherent with the file system buffer cache
-   like early versions of FreeBSD and possibly contemporary NetBSD.)
-   For shared mappings, we should conversely verify that changes get
-   propagated back to all the places they're supposed to be.
-
-   Grep wants private fixed already mapped.
-   The main things grep needs to know about mmap are:
-   * does it exist and is it safe to write into the mmap'd area
-   * how to use it (BSD variants)  */
-
-#include <fcntl.h>
-#include <sys/mman.h>
-
-#if !STDC_HEADERS && !HAVE_STDLIB_H
-char *malloc ();
-#endif
-
-/* This mess was copied from the GNU getpagesize.h.  */
-#if !HAVE_GETPAGESIZE
-/* Assume that all systems that can run configure have sys/param.h.  */
-# if !HAVE_SYS_PARAM_H
-#  define HAVE_SYS_PARAM_H 1
-# endif
-
-# ifdef _SC_PAGESIZE
-#  define getpagesize() sysconf(_SC_PAGESIZE)
-# else /* no _SC_PAGESIZE */
-#  if HAVE_SYS_PARAM_H
-#   include <sys/param.h>
-#   ifdef EXEC_PAGESIZE
-#    define getpagesize() EXEC_PAGESIZE
-#   else /* no EXEC_PAGESIZE */
-#    ifdef NBPG
-#     define getpagesize() NBPG * CLSIZE
-#     ifndef CLSIZE
-#      define CLSIZE 1
-#     endif /* no CLSIZE */
-#    else /* no NBPG */
-#     ifdef NBPC
-#      define getpagesize() NBPC
-#     else /* no NBPC */
-#      ifdef PAGESIZE
-#       define getpagesize() PAGESIZE
-#      endif /* PAGESIZE */
-#     endif /* no NBPC */
-#    endif /* no NBPG */
-#   endif /* no EXEC_PAGESIZE */
-#  else /* no HAVE_SYS_PARAM_H */
-#   define getpagesize() 8192	/* punt totally */
-#  endif /* no HAVE_SYS_PARAM_H */
-# endif /* no _SC_PAGESIZE */
-
-#endif /* no HAVE_GETPAGESIZE */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
 
 int
 main ()
 {
-  char *data, *data2, *data3;
-  int i, pagesize;
-  int fd;
-
-  pagesize = getpagesize ();
-
-  /* First, make a file with some known garbage in it. */
-  data = (char *) malloc (pagesize);
-  if (!data)
-    exit (1);
-  for (i = 0; i < pagesize; ++i)
-    *(data + i) = rand ();
-  umask (0);
-  fd = creat ("conftest.mmap", 0600);
-  if (fd < 0)
-    exit (1);
-  if (write (fd, data, pagesize) != pagesize)
-    exit (1);
-  close (fd);
-
-  /* Next, try to mmap the file at a fixed address which already has
-     something else allocated at it.  If we can, also make sure that
-     we see the same garbage.  */
-  fd = open ("conftest.mmap", O_RDWR);
-  if (fd < 0)
-    exit (1);
-  data2 = (char *) malloc (2 * pagesize);
-  if (!data2)
-    exit (1);
-  data2 += (pagesize - ((long) data2 & (pagesize - 1))) & (pagesize - 1);
-  if (data2 != mmap (data2, pagesize, PROT_READ | PROT_WRITE,
-		     MAP_PRIVATE | MAP_FIXED, fd, 0L))
-    exit (1);
-  for (i = 0; i < pagesize; ++i)
-    if (*(data + i) != *(data2 + i))
-      exit (1);
-
-  /* Finally, make sure that changes to the mapped area do not
-     percolate back to the file as seen by read().  (This is a bug on
-     some variants of i386 svr4.0.)  */
-  for (i = 0; i < pagesize; ++i)
-    *(data2 + i) = *(data2 + i) + 1;
-  data3 = (char *) malloc (pagesize);
-  if (!data3)
-    exit (1);
-  if (read (fd, data3, pagesize) != pagesize)
-    exit (1);
-  for (i = 0; i < pagesize; ++i)
-    if (*(data + i) != *(data3 + i))
-      exit (1);
-  close (fd);
-  exit (0);
+ _finite(0);
+  ;
+  return 0;
 }
 _ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_func_mmap_fixed_mapped=yes
+  glibcxx_cv_func__finite_use=yes
 else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
+  echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-( exit $ac_status )
-ac_cv_func_mmap_fixed_mapped=no
-fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
-fi
+glibcxx_cv_func__finite_use=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_func_mmap_fixed_mapped" >&5
-echo "${ECHO_T}$ac_cv_func_mmap_fixed_mapped" >&6
-if test $ac_cv_func_mmap_fixed_mapped = yes; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_MMAP 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-rm -f conftest.mmap
 
 fi
 
-else
-
-  # This lets us hard-code the functionality we know we'll have in the cross
-  # target environment.  "Let" is a sugar-coated word placed on an especially
-  # dull and tedious hack, actually.
-  #
-  # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
-  # that involve linking, can't be used:
-  #    "cannot open sim-crt0.o"
-  #    "cannot open crt0.o"
-  # etc.  All this is because there currently exists no unified, consistent
-  # way for top level CC information to be passed down to target directories:
-  # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
-  # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
-  # crosses can be removed.
-
-  # If Canadian cross, then don't pick up tools from the build directory.
-  # Used only in GLIBCXX_EXPORT_INCLUDES.
-  if test -n "$with_cross_host" &&
-     test x"$build_alias" != x"$with_cross_host" &&
-     test x"$build" != x"$target";
-  then
-    CANADIAN=yes
-  else
-    CANADIAN=no
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
 
-  # Construct crosses by hand, eliminating bits that need ld...
-  # GLIBCXX_CHECK_COMPILER_FEATURES
-  # GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
-  # GLIBCXX_CHECK_MATH_SUPPORT
-
-  # First, test for "known" system libraries.  We may be using newlib even
-  # on a hosted environment.
-  if test "x${with_newlib}" = "xyes"; then
-    os_include_dir="os/newlib"
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
-_ACEOF
-
-
-    # GLIBCXX_CHECK_STDLIB_SUPPORT
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_STRTOF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_STRTOLD 1
-_ACEOF
-
-    # AC_FUNC_MMAP
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MMAP 1
-_ACEOF
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ACOSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ASINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATAN2F 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATANF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_CEILF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSHF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_EXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FABSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FLOORF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FMODF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LDEXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOG10F 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOGF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MODFF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_POWF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINHF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SQRTF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANHF 1
-_ACEOF
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_ISREG 1
-_ACEOF
+    if test x$glibcxx_cv_func__finite_use = x"yes"; then
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_IFREG 1
+for ac_func in _finite
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
-  else
-
-# Base decisions on target environment.
-case "${host}" in
-  arm*-*-symbianelf*)
-    # This is a freestanding configuration; there is nothing to do here.
-    ;;
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
-  *-darwin*)
-    # Darwin versions vary, but the linker should work in a cross environment,
-    # so we just check for all the features here.
-    # Check for available headers.
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
+#undef $ac_func
 
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+fi
+done
 
+    fi
+  fi
 
 
 
+  echo "$as_me:$LINENO: checking for copysign declaration" >&5
+echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
+    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
-    machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \
-    sys/types.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+#include <math.h>
+int
+main ()
+{
+ copysign(0, 0);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -31123,7 +34328,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -31136,147 +34341,163 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  glibcxx_cv_func_copysign_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
+glibcxx_cv_func_copysign_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
+
+  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
+
+for ac_func in copysign
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <$ac_header>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
 _ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
+eval "$as_ac_var=no"
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
 fi
-
 done
 
+  else
 
+  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
+echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
+    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-  # All these tests are for C++; save the language and the compiler flags.
-  # The CXXFLAGS thing is suspicious, but based on similar bits previously
-  # found in GLIBCXX_CONFIGURE.
 
 
-  ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-
-  # Check for maintainer-mode bits.
-  if test x"$USE_MAINTAINER_MODE" = xno; then
-    WERROR=''
-  else
-    WERROR='-Werror'
-  fi
-
-  # Check for -ffunction-sections -fdata-sections
-  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
-echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
-  CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
-  cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
+#include <math.h>
 int
 main ()
 {
-int foo;
+ _copysign(0, 0);
   ;
   return 0;
 }
@@ -31303,49 +34524,38 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_fdsections=yes
+  glibcxx_cv_func__copysign_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_fdsections=no
+glibcxx_cv_func__copysign_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  if test "$ac_test_CXXFLAGS" = set; then
-    CXXFLAGS="$ac_save_CXXFLAGS"
-  else
-    # this is the suspicious part
-    CXXFLAGS=''
-  fi
-  if test x"$ac_fdsections" = x"yes"; then
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-  fi
-  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
-echo "${ECHO_T}$ac_fdsections" >&6
-
-  ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
 
-    # Don't call GLIBCXX_CHECK_LINKER_FEATURES, Darwin doesn't have a GNU ld
-
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
 
-    echo "$as_me:$LINENO: checking for sin in -lm" >&5
-echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_sin+set}" = set; then
+for ac_func in _copysign
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -31356,18 +34566,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
+{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char sin ();
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-sin ();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -31394,32 +34633,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_sin=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_sin=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
-echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
-if test $ac_cv_lib_m_sin = yes; then
-  libm="-lm"
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
 fi
+done
 
-  ac_save_LIBS="$LIBS"
-  LIBS="$LIBS $libm"
+    fi
+  fi
 
 
 
-  echo "$as_me:$LINENO: checking for isinf declaration" >&5
-echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincos declaration" >&5
+echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -31438,14 +34680,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- isinf(0);
+ sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -31472,12 +34710,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinf_use=yes
+  glibcxx_cv_func_sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinf_use=no
+glibcxx_cv_func_sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -31490,12 +34728,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
 
-  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
 
-for ac_func in isinf
+for ac_func in sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -31603,10 +34841,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
-echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
+echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -31625,14 +34863,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isinf(0);
+ _sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -31659,12 +34893,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinf_use=yes
+  glibcxx_cv_func__sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinf_use=no
+glibcxx_cv_func__sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -31677,12 +34911,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
 
-    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
 
-for ac_func in _isinf
+for ac_func in _sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -31793,10 +35027,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isnan declaration" >&5
-echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
+echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -31822,7 +35056,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isnan(0);
+ fpclass(0);
   ;
   return 0;
 }
@@ -31849,12 +35083,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnan_use=yes
+  glibcxx_cv_func_fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnan_use=no
+glibcxx_cv_func_fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -31867,12 +35101,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
 
-  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
+  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
 
-for ac_func in isnan
+for ac_func in fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -31980,10 +35214,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
-echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
+echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -32009,7 +35243,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isnan(0);
+ _fpclass(0);
   ;
   return 0;
 }
@@ -32036,12 +35270,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnan_use=yes
+  glibcxx_cv_func__fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnan_use=no
+glibcxx_cv_func__fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -32054,12 +35288,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
 
-    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
+    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
 
-for ac_func in _isnan
+for ac_func in _fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -32170,10 +35404,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for finite declaration" >&5
-echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finite_use+set} != xset; then
-    if test "${glibcxx_cv_func_finite_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
+echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -32199,7 +35433,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- finite(0);
+ qfpclass(0);
   ;
   return 0;
 }
@@ -32226,12 +35460,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finite_use=yes
+  glibcxx_cv_func_qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finite_use=no
+glibcxx_cv_func_qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -32244,12 +35478,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
 
-  if test x$glibcxx_cv_func_finite_use = x"yes"; then
+  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
 
-for ac_func in finite
+for ac_func in qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -32357,10 +35591,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _finite declaration" >&5
-echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finite_use+set} != xset; then
-    if test "${glibcxx_cv_func__finite_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
+echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -32386,7 +35620,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _finite(0);
+ _qfpclass(0);
   ;
   return 0;
 }
@@ -32413,12 +35647,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finite_use=yes
+  glibcxx_cv_func__qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finite_use=no
+glibcxx_cv_func__qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -32431,12 +35665,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
 
-    if test x$glibcxx_cv_func__finite_use = x"yes"; then
+    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
 
-for ac_func in _finite
+for ac_func in _qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -32547,10 +35781,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysign declaration" >&5
-echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypot declaration" >&5
+echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -32572,7 +35806,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- copysign(0, 0);
+ hypot(0, 0);
   ;
   return 0;
 }
@@ -32599,12 +35833,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysign_use=yes
+  glibcxx_cv_func_hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysign_use=no
+glibcxx_cv_func_hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -32617,12 +35851,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
 
-  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
 
-for ac_func in copysign
+for ac_func in hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -32730,10 +35964,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
-echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
+echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -32755,7 +35989,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _copysign(0, 0);
+ _hypot(0, 0);
   ;
   return 0;
 }
@@ -32782,12 +36016,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysign_use=yes
+  glibcxx_cv_func__hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysign_use=no
+glibcxx_cv_func__hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -32800,12 +36034,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
 
-    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
 
-for ac_func in _copysign
+for ac_func in _hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -32916,22 +36150,21 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincos declaration" >&5
-echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for float trig functions" >&5
+echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -32941,7 +36174,9 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincos(0, 0, 0);
+ `for x in acosf asinf atanf \
+                                          cosf sinf tanf \
+                                          coshf sinhf tanhf; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -32968,30 +36203,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincos_use=yes
+  glibcxx_cv_func_float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincos_use=no
+glibcxx_cv_func_float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
+  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
 
-for ac_func in sincos
+
+
+
+
+
+
+
+for ac_func in acosf asinf atanf \
+                                          cosf sinf tanf \
+                                          coshf sinhf tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -33097,24 +36339,24 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
-echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for float round functions" >&5
+echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -33124,7 +36366,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincos(0, 0, 0);
+ `for x in ceilf floorf; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -33151,30 +36393,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincos_use=yes
+  glibcxx_cv_func_float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincos_use=no
+glibcxx_cv_func_float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
+  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
 
-for ac_func in _sincos
+for ac_func in ceilf floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -33280,15 +36520,14 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
-echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for expf declaration" >&5
+echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expf_use+set} != xset; then
+    if test "${glibcxx_cv_func_expf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -33314,7 +36553,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fpclass(0);
+ expf(0);
   ;
   return 0;
 }
@@ -33341,12 +36580,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fpclass_use=yes
+  glibcxx_cv_func_expf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fpclass_use=no
+glibcxx_cv_func_expf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -33359,12 +36598,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
 
-  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_expf_use = x"yes"; then
 
-for ac_func in fpclass
+for ac_func in expf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -33472,10 +36711,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
-echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expf declaration" >&5
+echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expf_use+set} != xset; then
+    if test "${glibcxx_cv_func__expf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -33501,7 +36740,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fpclass(0);
+ _expf(0);
   ;
   return 0;
 }
@@ -33528,12 +36767,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fpclass_use=yes
+  glibcxx_cv_func__expf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fpclass_use=no
+glibcxx_cv_func__expf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -33546,12 +36785,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
 
-    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__expf_use = x"yes"; then
 
-for ac_func in _fpclass
+for ac_func in _expf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -33662,10 +36901,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
-echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
+echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -33691,7 +36930,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- qfpclass(0);
+ isnanf(0);
   ;
   return 0;
 }
@@ -33718,12 +36957,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_qfpclass_use=yes
+  glibcxx_cv_func_isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_qfpclass_use=no
+glibcxx_cv_func_isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -33736,12 +36975,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
 
-  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
 
-for ac_func in qfpclass
+for ac_func in isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -33849,10 +37088,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
-echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
+echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -33878,7 +37117,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _qfpclass(0);
+ _isnanf(0);
   ;
   return 0;
 }
@@ -33905,12 +37144,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__qfpclass_use=yes
+  glibcxx_cv_func__isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__qfpclass_use=no
+glibcxx_cv_func__isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -33923,12 +37162,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
 
-    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
 
-for ac_func in _qfpclass
+for ac_func in _isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -34039,10 +37278,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypot declaration" >&5
-echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinff declaration" >&5
+echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -34061,10 +37300,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- hypot(0, 0);
+ isinff(0);
   ;
   return 0;
 }
@@ -34091,12 +37334,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypot_use=yes
+  glibcxx_cv_func_isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypot_use=no
+glibcxx_cv_func_isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -34109,12 +37352,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
 
-  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
 
-for ac_func in hypot
+for ac_func in isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -34222,10 +37465,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
-echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
+echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -34244,10 +37487,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _hypot(0, 0);
+ _isinff(0);
   ;
   return 0;
 }
@@ -34274,12 +37521,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypot_use=yes
+  glibcxx_cv_func__isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypot_use=no
+glibcxx_cv_func__isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -34292,12 +37539,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
 
-    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
 
-for ac_func in _hypot
+for ac_func in _isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -34408,21 +37655,22 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for float trig functions" >&5
-echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
+echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -34432,9 +37680,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in acosf asinf atanf \
-                                          cosf sinf tanf \
-                                          coshf sinhf tanhf; do echo "$x (0);"; done`
+ atan2f(0, 0);
   ;
   return 0;
 }
@@ -34461,37 +37707,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_trig_use=yes
+  glibcxx_cv_func_atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_trig_use=no
+glibcxx_cv_func_atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
-  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
 
+  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
 
-for ac_func in acosf asinf atanf \
-                                          cosf sinf tanf \
-                                          coshf sinhf tanhf
+for ac_func in atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -34597,24 +37836,24 @@ _ACEOF
 fi
 done
 
-  fi
-
+  else
 
-  echo "$as_me:$LINENO: checking for float round functions" >&5
-echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
+echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -34624,7 +37863,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in ceilf floorf; do echo "$x (0);"; done`
+ _atan2f(0, 0);
   ;
   return 0;
 }
@@ -34651,28 +37890,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_round_use=yes
+  glibcxx_cv_func__atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_round_use=no
+glibcxx_cv_func__atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
-  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
 
+    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
 
-for ac_func in ceilf floorf
+for ac_func in _atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -34778,14 +38019,15 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for expf declaration" >&5
-echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expf_use+set} != xset; then
-    if test "${glibcxx_cv_func_expf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
+echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -34811,7 +38053,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- expf(0);
+ fabsf(0);
   ;
   return 0;
 }
@@ -34838,12 +38080,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expf_use=yes
+  glibcxx_cv_func_fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expf_use=no
+glibcxx_cv_func_fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -34856,12 +38098,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
 
-  if test x$glibcxx_cv_func_expf_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
 
-for ac_func in expf
+for ac_func in fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -34969,10 +38211,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expf declaration" >&5
-echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expf_use+set} != xset; then
-    if test "${glibcxx_cv_func__expf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
+echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -34998,7 +38240,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _expf(0);
+ _fabsf(0);
   ;
   return 0;
 }
@@ -35025,12 +38267,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expf_use=yes
+  glibcxx_cv_func__fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expf_use=no
+glibcxx_cv_func__fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35043,12 +38285,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
 
-    if test x$glibcxx_cv_func__expf_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
 
-for ac_func in _expf
+for ac_func in _fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35159,10 +38401,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
-echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
+echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35181,14 +38423,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- isnanf(0);
+ fmodf(0, 0);
   ;
   return 0;
 }
@@ -35215,12 +38453,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanf_use=yes
+  glibcxx_cv_func_fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanf_use=no
+glibcxx_cv_func_fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35233,12 +38471,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
 
-  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
 
-for ac_func in isnanf
+for ac_func in fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35346,10 +38584,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
-echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
+echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35368,14 +38606,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isnanf(0);
+ _fmodf(0, 0);
   ;
   return 0;
 }
@@ -35402,12 +38636,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanf_use=yes
+  glibcxx_cv_func__fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanf_use=no
+glibcxx_cv_func__fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35420,12 +38654,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
 
-    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
 
-for ac_func in _isnanf
+for ac_func in _fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35536,10 +38770,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinff declaration" >&5
-echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
+echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35558,14 +38792,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- isinff(0);
+ frexpf(0, 0);
   ;
   return 0;
 }
@@ -35592,12 +38822,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinff_use=yes
+  glibcxx_cv_func_frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinff_use=no
+glibcxx_cv_func_frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35610,12 +38840,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
 
-  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
 
-for ac_func in isinff
+for ac_func in frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35723,10 +38953,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
-echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
+echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35745,14 +38975,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isinff(0);
+ _frexpf(0, 0);
   ;
   return 0;
 }
@@ -35779,12 +39005,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinff_use=yes
+  glibcxx_cv_func__frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinff_use=no
+glibcxx_cv_func__frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35797,12 +39023,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
 
-    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
 
-for ac_func in _isinff
+for ac_func in _frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35913,10 +39139,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
-echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
+echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35938,7 +39164,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- atan2f(0, 0);
+ hypotf(0, 0);
   ;
   return 0;
 }
@@ -35965,12 +39191,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2f_use=yes
+  glibcxx_cv_func_hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2f_use=no
+glibcxx_cv_func_hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35983,12 +39209,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
 
-  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
 
-for ac_func in atan2f
+for ac_func in hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36096,10 +39322,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
-echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
+echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36121,7 +39347,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _atan2f(0, 0);
+ _hypotf(0, 0);
   ;
   return 0;
 }
@@ -36148,12 +39374,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2f_use=yes
+  glibcxx_cv_func__hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2f_use=no
+glibcxx_cv_func__hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36166,12 +39392,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
 
-    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
 
-for ac_func in _atan2f
+for ac_func in _hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36282,10 +39508,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
-echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
+echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36304,14 +39530,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- fabsf(0);
+ ldexpf(0, 0);
   ;
   return 0;
 }
@@ -36338,12 +39560,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsf_use=yes
+  glibcxx_cv_func_ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsf_use=no
+glibcxx_cv_func_ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36356,12 +39578,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
 
-  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
 
-for ac_func in fabsf
+for ac_func in ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36469,10 +39691,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
-echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
+echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36491,14 +39713,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _fabsf(0);
+ _ldexpf(0, 0);
   ;
   return 0;
 }
@@ -36525,12 +39743,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsf_use=yes
+  glibcxx_cv_func__ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsf_use=no
+glibcxx_cv_func__ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36543,12 +39761,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
 
-    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
 
-for ac_func in _fabsf
+for ac_func in _ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36659,10 +39877,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
-echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logf declaration" >&5
+echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logf_use+set} != xset; then
+    if test "${glibcxx_cv_func_logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36681,10 +39899,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- fmodf(0, 0);
+ logf(0);
   ;
   return 0;
 }
@@ -36711,12 +39933,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodf_use=yes
+  glibcxx_cv_func_logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodf_use=no
+glibcxx_cv_func_logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36729,12 +39951,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
 
-  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
+  if test x$glibcxx_cv_func_logf_use = x"yes"; then
 
-for ac_func in fmodf
+for ac_func in logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36842,10 +40064,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
-echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logf declaration" >&5
+echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logf_use+set} != xset; then
+    if test "${glibcxx_cv_func__logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36864,10 +40086,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _fmodf(0, 0);
+ _logf(0);
   ;
   return 0;
 }
@@ -36894,12 +40120,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodf_use=yes
+  glibcxx_cv_func__logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodf_use=no
+glibcxx_cv_func__logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36912,12 +40138,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
 
-    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
+    if test x$glibcxx_cv_func__logf_use = x"yes"; then
 
-for ac_func in _fmodf
+for ac_func in _logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37028,10 +40254,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
-echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10f declaration" >&5
+echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37050,10 +40276,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- frexpf(0, 0);
+ log10f(0);
   ;
   return 0;
 }
@@ -37080,12 +40310,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpf_use=yes
+  glibcxx_cv_func_log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpf_use=no
+glibcxx_cv_func_log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37098,12 +40328,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
 
-  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
 
-for ac_func in frexpf
+for ac_func in log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37211,10 +40441,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
-echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
+echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37233,10 +40463,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _frexpf(0, 0);
+ _log10f(0);
   ;
   return 0;
 }
@@ -37263,12 +40497,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpf_use=yes
+  glibcxx_cv_func__log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpf_use=no
+glibcxx_cv_func__log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37281,12 +40515,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
 
-    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
 
-for ac_func in _frexpf
+for ac_func in _log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37397,10 +40631,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
-echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modff declaration" >&5
+echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modff_use+set} != xset; then
+    if test "${glibcxx_cv_func_modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37422,7 +40656,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- hypotf(0, 0);
+ modff(0, 0);
   ;
   return 0;
 }
@@ -37449,12 +40683,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotf_use=yes
+  glibcxx_cv_func_modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotf_use=no
+glibcxx_cv_func_modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37467,12 +40701,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
 
-  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
+  if test x$glibcxx_cv_func_modff_use = x"yes"; then
 
-for ac_func in hypotf
+for ac_func in modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37580,10 +40814,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
-echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modff declaration" >&5
+echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modff_use+set} != xset; then
+    if test "${glibcxx_cv_func__modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37605,7 +40839,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _hypotf(0, 0);
+ _modff(0, 0);
   ;
   return 0;
 }
@@ -37632,12 +40866,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotf_use=yes
+  glibcxx_cv_func__modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotf_use=no
+glibcxx_cv_func__modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37650,12 +40884,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
 
-    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
+    if test x$glibcxx_cv_func__modff_use = x"yes"; then
 
-for ac_func in _hypotf
+for ac_func in _modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37766,10 +41000,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
-echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powf declaration" >&5
+echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powf_use+set} != xset; then
+    if test "${glibcxx_cv_func_powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37791,7 +41025,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- ldexpf(0, 0);
+ powf(0, 0);
   ;
   return 0;
 }
@@ -37818,12 +41052,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpf_use=yes
+  glibcxx_cv_func_powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpf_use=no
+glibcxx_cv_func_powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37836,12 +41070,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_powf_use = x"yes"; then
 
-for ac_func in ldexpf
+for ac_func in powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37949,10 +41183,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
-echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powf declaration" >&5
+echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powf_use+set} != xset; then
+    if test "${glibcxx_cv_func__powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37974,7 +41208,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _ldexpf(0, 0);
+ _powf(0, 0);
   ;
   return 0;
 }
@@ -38001,12 +41235,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpf_use=yes
+  glibcxx_cv_func__powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpf_use=no
+glibcxx_cv_func__powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38019,12 +41253,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__powf_use = x"yes"; then
 
-for ac_func in _ldexpf
+for ac_func in _powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -38135,10 +41369,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logf declaration" >&5
-echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logf_use+set} != xset; then
-    if test "${glibcxx_cv_func_logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
+echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -38164,7 +41398,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- logf(0);
+ sqrtf(0);
   ;
   return 0;
 }
@@ -38191,12 +41425,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logf_use=yes
+  glibcxx_cv_func_sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logf_use=no
+glibcxx_cv_func_sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38209,12 +41443,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
 
-  if test x$glibcxx_cv_func_logf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
 
-for ac_func in logf
+for ac_func in sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -38322,10 +41556,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logf declaration" >&5
-echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logf_use+set} != xset; then
-    if test "${glibcxx_cv_func__logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
+echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -38351,7 +41585,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _logf(0);
+ _sqrtf(0);
   ;
   return 0;
 }
@@ -38378,12 +41612,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logf_use=yes
+  glibcxx_cv_func__sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logf_use=no
+glibcxx_cv_func__sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38396,12 +41630,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
 
-    if test x$glibcxx_cv_func__logf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
 
-for ac_func in _logf
+for ac_func in _sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -38512,10 +41746,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10f declaration" >&5
-echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
+echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -38534,14 +41768,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- log10f(0);
+ sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -38568,12 +41798,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10f_use=yes
+  glibcxx_cv_func_sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10f_use=no
+glibcxx_cv_func_sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38586,12 +41816,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
 
-  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
 
-for ac_func in log10f
+for ac_func in sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -38699,10 +41929,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
-echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
+echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -38721,14 +41951,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _log10f(0);
+ _sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -38755,12 +41981,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10f_use=yes
+  glibcxx_cv_func__sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10f_use=no
+glibcxx_cv_func__sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38773,12 +41999,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
 
-    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
 
-for ac_func in _log10f
+for ac_func in _sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -38889,10 +42115,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modff declaration" >&5
-echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modff_use+set} != xset; then
-    if test "${glibcxx_cv_func_modff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finitef declaration" >&5
+echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -38911,10 +42137,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- modff(0, 0);
+ finitef(0);
   ;
   return 0;
 }
@@ -38941,12 +42171,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modff_use=yes
+  glibcxx_cv_func_finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modff_use=no
+glibcxx_cv_func_finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38959,12 +42189,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
 
-  if test x$glibcxx_cv_func_modff_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
 
-for ac_func in modff
+for ac_func in finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39072,10 +42302,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modff declaration" >&5
-echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modff_use+set} != xset; then
-    if test "${glibcxx_cv_func__modff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
+echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -39094,10 +42324,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _modff(0, 0);
+ _finitef(0);
   ;
   return 0;
 }
@@ -39124,12 +42358,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modff_use=yes
+  glibcxx_cv_func__finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modff_use=no
+glibcxx_cv_func__finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -39142,12 +42376,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
 
-    if test x$glibcxx_cv_func__modff_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
 
-for ac_func in _modff
+for ac_func in _finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39258,22 +42492,21 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powf declaration" >&5
-echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powf_use+set} != xset; then
-    if test "${glibcxx_cv_func_powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for long double trig functions" >&5
+echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -39283,7 +42516,9 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- powf(0, 0);
+ `for x in acosl asinl atanl \
+                                          cosl sinl tanl \
+                                          coshl sinhl tanhl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -39310,30 +42545,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powf_use=yes
+  glibcxx_cv_func_long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powf_use=no
+glibcxx_cv_func_long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
+  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_powf_use = x"yes"; then
 
-for ac_func in powf
+
+
+
+
+
+
+
+for ac_func in acosl asinl atanl \
+                                          cosl sinl tanl \
+                                          coshl sinhl tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39439,24 +42681,24 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _powf declaration" >&5
-echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powf_use+set} != xset; then
-    if test "${glibcxx_cv_func__powf_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for long double round functions" >&5
+echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -39466,7 +42708,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _powf(0, 0);
+ `for x in ceill floorl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -39493,30 +42735,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powf_use=yes
+  glibcxx_cv_func_long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powf_use=no
+glibcxx_cv_func_long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
+  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__powf_use = x"yes"; then
 
-for ac_func in _powf
+for ac_func in ceill floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39622,15 +42862,14 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
-echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
+echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -39656,7 +42895,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sqrtf(0);
+ isnanl(0);
   ;
   return 0;
 }
@@ -39683,12 +42922,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtf_use=yes
+  glibcxx_cv_func_isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtf_use=no
+glibcxx_cv_func_isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -39701,12 +42940,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
 
-  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
 
-for ac_func in sqrtf
+for ac_func in isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39814,10 +43053,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
-echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
+echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -39843,7 +43082,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sqrtf(0);
+ _isnanl(0);
   ;
   return 0;
 }
@@ -39870,12 +43109,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtf_use=yes
+  glibcxx_cv_func__isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtf_use=no
+glibcxx_cv_func__isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -39888,12 +43127,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
 
-    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
 
-for ac_func in _sqrtf
+for ac_func in _isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -40004,10 +43243,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
-echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
+echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -40026,10 +43265,201 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- sincosf(0, 0, 0);
+ isinfl(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isinfl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isinfl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
+
+  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
+
+for ac_func in isinfl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
+echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ _isinfl(0);
   ;
   return 0;
 }
@@ -40056,12 +43486,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosf_use=yes
+  glibcxx_cv_func__isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosf_use=no
+glibcxx_cv_func__isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -40074,12 +43504,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
 
-  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
 
-for ac_func in sincosf
+for ac_func in _isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -40185,12 +43615,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
-echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
+echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
+    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -40212,7 +43645,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosf(0, 0, 0);
+ copysignl(0, 0);
   ;
   return 0;
 }
@@ -40239,12 +43672,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosf_use=yes
+  glibcxx_cv_func_copysignl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosf_use=no
+glibcxx_cv_func_copysignl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -40257,12 +43690,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
 
-    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
+  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
 
-for ac_func in _sincosf
+for ac_func in copysignl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -40368,15 +43801,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for finitef declaration" >&5
-echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
+echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
+    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -40395,14 +43825,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- finitef(0);
+ _copysignl(0, 0);
   ;
   return 0;
 }
@@ -40429,12 +43855,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitef_use=yes
+  glibcxx_cv_func__copysignl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitef_use=no
+glibcxx_cv_func__copysignl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -40447,12 +43873,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
 
-  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
+    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
 
-for ac_func in finitef
+for ac_func in _copysignl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -40558,12 +43984,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
-echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
+echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -40582,14 +44011,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _finitef(0);
+ atan2l(0, 0);
   ;
   return 0;
 }
@@ -40616,12 +44041,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitef_use=yes
+  glibcxx_cv_func_atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitef_use=no
+glibcxx_cv_func_atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -40634,12 +44059,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
 
-    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
 
-for ac_func in _finitef
+for ac_func in atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -40745,26 +44170,24 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for long double trig functions" >&5
-echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
+echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -40774,9 +44197,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in acosl asinl atanl \
-                                          cosl sinl tanl \
-                                          coshl sinhl tanhl; do echo "$x (0);"; done`
+ _atan2l(0, 0);
   ;
   return 0;
 }
@@ -40803,37 +44224,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_trig_use=yes
+  glibcxx_cv_func__atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_trig_use=no
+glibcxx_cv_func__atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
-  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
 
+    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
 
-for ac_func in acosl asinl atanl \
-                                          cosl sinl tanl \
-                                          coshl sinhl tanhl
+for ac_func in _atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -40939,34 +44353,41 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
-  echo "$as_me:$LINENO: checking for long double round functions" >&5
-echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for expl declaration" >&5
+echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expl_use+set} != xset; then
+    if test "${glibcxx_cv_func_expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- `for x in ceill floorl; do echo "$x (0);"; done`
+ expl(0);
   ;
   return 0;
 }
@@ -40993,28 +44414,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_round_use=yes
+  glibcxx_cv_func_expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_round_use=no
+glibcxx_cv_func_expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
-  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
 
+  if test x$glibcxx_cv_func_expl_use = x"yes"; then
 
-for ac_func in ceill floorl
+for ac_func in expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -41120,14 +44543,12 @@ _ACEOF
 fi
 done
 
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
-echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expl declaration" >&5
+echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expl_use+set} != xset; then
+    if test "${glibcxx_cv_func__expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -41153,7 +44574,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isnanl(0);
+ _expl(0);
   ;
   return 0;
 }
@@ -41180,12 +44601,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanl_use=yes
+  glibcxx_cv_func__expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanl_use=no
+glibcxx_cv_func__expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -41198,12 +44619,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
 
-  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
+    if test x$glibcxx_cv_func__expl_use = x"yes"; then
 
-for ac_func in isnanl
+for ac_func in _expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -41309,12 +44730,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
-echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
+echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -41340,7 +44764,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isnanl(0);
+ fabsl(0);
   ;
   return 0;
 }
@@ -41367,12 +44791,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanl_use=yes
+  glibcxx_cv_func_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanl_use=no
+glibcxx_cv_func_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -41385,12 +44809,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
 
-    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
 
-for ac_func in _isnanl
+for ac_func in fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -41496,15 +44920,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
-echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
+echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -41530,7 +44951,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isinfl(0);
+ _fabsl(0);
   ;
   return 0;
 }
@@ -41557,12 +44978,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinfl_use=yes
+  glibcxx_cv_func__fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinfl_use=no
+glibcxx_cv_func__fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -41575,12 +44996,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
 
-  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
 
-for ac_func in isinfl
+for ac_func in _fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -41686,12 +45107,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
-echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
+echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -41710,14 +45134,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isinfl(0);
+ fmodl(0, 0);
   ;
   return 0;
 }
@@ -41744,12 +45164,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinfl_use=yes
+  glibcxx_cv_func_fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinfl_use=no
+glibcxx_cv_func_fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -41762,12 +45182,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
 
-    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
 
-for ac_func in _isinfl
+for ac_func in fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -41873,15 +45293,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
-echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
+echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -41903,7 +45320,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- copysignl(0, 0);
+ _fmodl(0, 0);
   ;
   return 0;
 }
@@ -41930,12 +45347,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysignl_use=yes
+  glibcxx_cv_func__fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysignl_use=no
+glibcxx_cv_func__fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -41948,12 +45365,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
 
-  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
 
-for ac_func in copysignl
+for ac_func in _fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -42059,12 +45476,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
-echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
+echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -42086,7 +45506,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _copysignl(0, 0);
+ frexpl(0, 0);
   ;
   return 0;
 }
@@ -42113,12 +45533,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysignl_use=yes
+  glibcxx_cv_func_frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysignl_use=no
+glibcxx_cv_func_frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -42131,12 +45551,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
 
-    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
 
-for ac_func in _copysignl
+for ac_func in frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -42242,15 +45662,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
-echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
+echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -42272,7 +45689,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- atan2l(0, 0);
+ _frexpl(0, 0);
   ;
   return 0;
 }
@@ -42299,12 +45716,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2l_use=yes
+  glibcxx_cv_func__frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2l_use=no
+glibcxx_cv_func__frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -42317,12 +45734,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
 
-  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
 
-for ac_func in atan2l
+for ac_func in _frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -42428,12 +45845,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
-echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
+echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -42455,7 +45875,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _atan2l(0, 0);
+ hypotl(0, 0);
   ;
   return 0;
 }
@@ -42482,12 +45902,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2l_use=yes
+  glibcxx_cv_func_hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2l_use=no
+glibcxx_cv_func_hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -42500,12 +45920,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
 
-    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
 
-for ac_func in _atan2l
+for ac_func in hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -42611,15 +46031,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for expl declaration" >&5
-echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expl_use+set} != xset; then
-    if test "${glibcxx_cv_func_expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
+echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -42638,14 +46055,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- expl(0);
+ _hypotl(0, 0);
   ;
   return 0;
 }
@@ -42672,12 +46085,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expl_use=yes
+  glibcxx_cv_func__hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expl_use=no
+glibcxx_cv_func__hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -42690,12 +46103,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
 
-  if test x$glibcxx_cv_func_expl_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
 
-for ac_func in expl
+for ac_func in _hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -42801,12 +46214,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _expl declaration" >&5
-echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expl_use+set} != xset; then
-    if test "${glibcxx_cv_func__expl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
+echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -42825,14 +46241,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _expl(0);
+ ldexpl(0, 0);
   ;
   return 0;
 }
@@ -42859,12 +46271,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expl_use=yes
+  glibcxx_cv_func_ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expl_use=no
+glibcxx_cv_func_ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -42877,12 +46289,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
 
-    if test x$glibcxx_cv_func__expl_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
 
-for ac_func in _expl
+for ac_func in ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -42988,15 +46400,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
-echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
+echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -43015,14 +46424,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- fabsl(0);
+ _ldexpl(0, 0);
   ;
   return 0;
 }
@@ -43049,12 +46454,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsl_use=yes
+  glibcxx_cv_func__ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsl_use=no
+glibcxx_cv_func__ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -43067,12 +46472,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
 
-  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
 
-for ac_func in fabsl
+for ac_func in _ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -43178,12 +46583,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
-echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for logl declaration" >&5
+echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logl_use+set} != xset; then
+    if test "${glibcxx_cv_func_logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -43209,7 +46617,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fabsl(0);
+ logl(0);
   ;
   return 0;
 }
@@ -43236,12 +46644,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsl_use=yes
+  glibcxx_cv_func_logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsl_use=no
+glibcxx_cv_func_logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -43254,12 +46662,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
 
-    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
+  if test x$glibcxx_cv_func_logl_use = x"yes"; then
 
-for ac_func in _fabsl
+for ac_func in logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -43365,15 +46773,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
-echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logl declaration" >&5
+echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logl_use+set} != xset; then
+    if test "${glibcxx_cv_func__logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -43392,10 +46797,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- fmodl(0, 0);
+ _logl(0);
   ;
   return 0;
 }
@@ -43422,12 +46831,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodl_use=yes
+  glibcxx_cv_func__logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodl_use=no
+glibcxx_cv_func__logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -43440,12 +46849,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
 
-  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
+    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in fmodl
+for ac_func in _logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -43551,12 +46960,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
-echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for log10l declaration" >&5
+echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -43575,10 +46987,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _fmodl(0, 0);
+ log10l(0);
   ;
   return 0;
 }
@@ -43605,12 +47021,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodl_use=yes
+  glibcxx_cv_func_log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodl_use=no
+glibcxx_cv_func_log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -43623,12 +47039,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
 
-    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in _fmodl
+for ac_func in log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -43734,15 +47150,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
-echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
+echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -43761,10 +47174,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- frexpl(0, 0);
+ _log10l(0);
   ;
   return 0;
 }
@@ -43791,12 +47208,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpl_use=yes
+  glibcxx_cv_func__log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpl_use=no
+glibcxx_cv_func__log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -43809,12 +47226,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
 
-  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-for ac_func in frexpl
+for ac_func in _log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -43920,12 +47337,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
-echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for modfl declaration" >&5
+echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -43947,7 +47367,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _frexpl(0, 0);
+ modfl(0, 0);
   ;
   return 0;
 }
@@ -43974,12 +47394,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpl_use=yes
+  glibcxx_cv_func_modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpl_use=no
+glibcxx_cv_func_modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -43992,12 +47412,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
 
-    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
 
-for ac_func in _frexpl
+for ac_func in modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44103,15 +47523,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
-echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
+echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44133,7 +47550,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- hypotl(0, 0);
+ _modfl(0, 0);
   ;
   return 0;
 }
@@ -44160,12 +47577,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotl_use=yes
+  glibcxx_cv_func__modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotl_use=no
+glibcxx_cv_func__modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44178,12 +47595,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
 
-  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
+    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
 
-for ac_func in hypotl
+for ac_func in _modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44289,12 +47706,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
-echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for powl declaration" >&5
+echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powl_use+set} != xset; then
+    if test "${glibcxx_cv_func_powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44316,7 +47736,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _hypotl(0, 0);
+ powl(0, 0);
   ;
   return 0;
 }
@@ -44343,12 +47763,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotl_use=yes
+  glibcxx_cv_func_powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotl_use=no
+glibcxx_cv_func_powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44361,12 +47781,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
 
-    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
+  if test x$glibcxx_cv_func_powl_use = x"yes"; then
 
-for ac_func in _hypotl
+for ac_func in powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44472,15 +47892,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
-echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powl declaration" >&5
+echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powl_use+set} != xset; then
+    if test "${glibcxx_cv_func__powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44502,7 +47919,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- ldexpl(0, 0);
+ _powl(0, 0);
   ;
   return 0;
 }
@@ -44529,12 +47946,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpl_use=yes
+  glibcxx_cv_func__powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpl_use=no
+glibcxx_cv_func__powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44547,12 +47964,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
-for ac_func in ldexpl
+for ac_func in _powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44658,12 +48075,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
-echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
+echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44682,10 +48102,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _ldexpl(0, 0);
+ sqrtl(0);
   ;
   return 0;
 }
@@ -44712,12 +48136,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpl_use=yes
+  glibcxx_cv_func_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpl_use=no
+glibcxx_cv_func_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44730,12 +48154,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in _ldexpl
+for ac_func in sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44841,15 +48265,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for logl declaration" >&5
-echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logl_use+set} != xset; then
-    if test "${glibcxx_cv_func_logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
+echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44875,7 +48296,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- logl(0);
+ _sqrtl(0);
   ;
   return 0;
 }
@@ -44902,12 +48323,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logl_use=yes
+  glibcxx_cv_func__sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logl_use=no
+glibcxx_cv_func__sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44920,12 +48341,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
 
-  if test x$glibcxx_cv_func_logl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in logl
+for ac_func in _sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45031,12 +48452,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _logl declaration" >&5
-echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logl_use+set} != xset; then
-    if test "${glibcxx_cv_func__logl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
+echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -45055,14 +48479,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _logl(0);
+ sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -45089,12 +48509,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logl_use=yes
+  glibcxx_cv_func_sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logl_use=no
+glibcxx_cv_func_sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45107,12 +48527,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
 
-    if test x$glibcxx_cv_func__logl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
 
-for ac_func in _logl
+for ac_func in sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45218,15 +48638,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for log10l declaration" >&5
-echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
+echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -45245,14 +48662,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- log10l(0);
+ _sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -45279,12 +48692,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10l_use=yes
+  glibcxx_cv_func__sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10l_use=no
+glibcxx_cv_func__sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45297,12 +48710,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
 
-  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
 
-for ac_func in log10l
+for ac_func in _sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45408,12 +48821,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
-echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for finitel declaration" >&5
+echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -45439,7 +48855,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _log10l(0);
+ finitel(0);
   ;
   return 0;
 }
@@ -45466,12 +48882,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10l_use=yes
+  glibcxx_cv_func_finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10l_use=no
+glibcxx_cv_func_finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45484,12 +48900,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
 
-    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
 
-for ac_func in _log10l
+for ac_func in finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45595,15 +49011,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for modfl declaration" >&5
-echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
+echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -45622,10 +49035,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- modfl(0, 0);
+ _finitel(0);
   ;
   return 0;
 }
@@ -45652,12 +49069,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modfl_use=yes
+  glibcxx_cv_func__finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modfl_use=no
+glibcxx_cv_func__finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45670,12 +49087,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
 
-  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in modfl
+for ac_func in _finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45781,24 +49198,27 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
-echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
+
+
+
+  echo "$as_me:$LINENO: checking for _float trig functions" >&5
+echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -45808,7 +49228,9 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _modfl(0, 0);
+ `for x in _acosf _asinf _atanf \
+                                          _cosf _sinf _tanf \
+                                          _coshf _sinhf _tanhf; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -45835,30 +49257,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modfl_use=yes
+  glibcxx_cv_func__float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modfl_use=no
+glibcxx_cv_func__float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
+  if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
 
-for ac_func in _modfl
+
+
+
+
+
+
+
+for ac_func in _acosf _asinf _atanf \
+                                          _cosf _sinf _tanf \
+                                          _coshf _sinhf _tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45964,27 +49393,24 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
-
-  echo "$as_me:$LINENO: checking for powl declaration" >&5
-echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powl_use+set} != xset; then
-    if test "${glibcxx_cv_func_powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _float round functions" >&5
+echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -45994,7 +49420,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- powl(0, 0);
+ `for x in _ceilf _floorf; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -46021,30 +49447,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powl_use=yes
+  glibcxx_cv_func__float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powl_use=no
+glibcxx_cv_func__float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
+  if test x$glibcxx_cv_func__float_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_powl_use = x"yes"; then
 
-for ac_func in powl
+for ac_func in _ceilf _floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -46150,24 +49574,25 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _powl declaration" >&5
-echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powl_use+set} != xset; then
-    if test "${glibcxx_cv_func__powl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for _long double trig functions" >&5
+echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -46177,7 +49602,9 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _powl(0, 0);
+ `for x in _acosl _asinl _atanl \
+                                          _cosl _sinl _tanl \
+                                          _coshl _sinhl _tanhl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -46204,30 +49631,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powl_use=yes
+  glibcxx_cv_func__long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powl_use=no
+glibcxx_cv_func__long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
+  if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
-for ac_func in _powl
+
+
+
+
+
+
+
+for ac_func in _acosl _asinl _atanl \
+                                          _cosl _sinl _tanl \
+                                          _coshl _sinhl _tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -46333,41 +49767,34 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
-
-  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
-echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _long double round functions" >&5
+echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- sqrtl(0);
+ `for x in _ceill _floorl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -46394,30 +49821,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtl_use=yes
+  glibcxx_cv_func__long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtl_use=no
+glibcxx_cv_func__long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
+  if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in sqrtl
+for ac_func in _ceill _floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -46523,12 +49948,18 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
-echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
+
+  LIBS="$ac_save_LIBS"
+  CXXFLAGS="$ac_save_CXXFLAGS"
+
+
+
+  echo "$as_me:$LINENO: checking for __builtin_abs declaration" >&5
+echo $ECHO_N "checking for __builtin_abs declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_abs_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_abs_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -46547,14 +49978,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _sqrtl(0);
+ __builtin_abs(0);
   ;
   return 0;
 }
@@ -46581,12 +50008,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtl_use=yes
+  glibcxx_cv_func___builtin_abs_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtl_use=no
+glibcxx_cv_func___builtin_abs_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -46599,20 +50026,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
-
-    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
-
-for ac_func in _sqrtl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_use" >&6
+  if test x$glibcxx_cv_func___builtin_abs_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_abs linkage" >&5
+echo $ECHO_N "checking for __builtin_abs linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_abs_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_abs_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -46623,47 +50047,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_abs(0);
   ;
   return 0;
 }
@@ -46690,35 +50078,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_abs_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_abs_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
     fi
-  fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_link" >&6
+    if test x$glibcxx_cv_func___builtin_abs_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_abs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
-  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
-echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_fabsf declaration" >&5
+echo $ECHO_N "checking for __builtin_fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -46740,7 +50129,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincosl(0, 0, 0);
+ __builtin_fabsf(0);
   ;
   return 0;
 }
@@ -46767,12 +50156,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosl_use=yes
+  glibcxx_cv_func___builtin_fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosl_use=no
+glibcxx_cv_func___builtin_fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -46785,20 +50174,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
-
-  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
-
-for ac_func in sincosl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_use" >&6
+  if test x$glibcxx_cv_func___builtin_fabsf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_fabsf linkage" >&5
+echo $ECHO_N "checking for __builtin_fabsf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_fabsf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_fabsf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -46809,47 +50195,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_fabsf(0);
   ;
   return 0;
 }
@@ -46876,32 +50226,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_fabsf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_fabsf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_link" >&6
+    if test x$glibcxx_cv_func___builtin_fabsf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_fabsf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
 _ACEOF
 
-fi
-done
+    fi
+  fi
 
-  else
 
-  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
-echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_fabs declaration" >&5
+echo $ECHO_N "checking for __builtin_fabs declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_fabs_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_fabs_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -46923,7 +50277,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosl(0, 0, 0);
+ __builtin_fabs(0);
   ;
   return 0;
 }
@@ -46950,12 +50304,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosl_use=yes
+  glibcxx_cv_func___builtin_fabs_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosl_use=no
+glibcxx_cv_func___builtin_fabs_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -46968,20 +50322,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
-
-    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
-
-for ac_func in _sincosl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_use" >&6
+  if test x$glibcxx_cv_func___builtin_fabs_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_fabs linkage" >&5
+echo $ECHO_N "checking for __builtin_fabs linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_fabs_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_fabs_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -46992,47 +50343,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_fabs(0);
   ;
   return 0;
 }
@@ -47059,35 +50374,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_fabs_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_fabs_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
     fi
-  fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_link" >&6
+    if test x$glibcxx_cv_func___builtin_fabs_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_fabs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for finitel declaration" >&5
-echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for __builtin_fabsl declaration" >&5
+echo $ECHO_N "checking for __builtin_fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -47106,14 +50422,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- finitel(0);
+ __builtin_fabsl(0);
   ;
   return 0;
 }
@@ -47140,12 +50452,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitel_use=yes
+  glibcxx_cv_func___builtin_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitel_use=no
+glibcxx_cv_func___builtin_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -47158,20 +50470,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
-
-  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
-
-for ac_func in finitel
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_use" >&6
+  if test x$glibcxx_cv_func___builtin_fabsl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_fabsl linkage" >&5
+echo $ECHO_N "checking for __builtin_fabsl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_fabsl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_fabsl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -47182,47 +50491,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_fabsl(0);
   ;
   return 0;
 }
@@ -47249,32 +50522,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_fabsl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_fabsl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_link" >&6
+    if test x$glibcxx_cv_func___builtin_fabsl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_fabsl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
 _ACEOF
 
-fi
-done
+    fi
+  fi
 
-  else
 
-  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
-echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_labs declaration" >&5
+echo $ECHO_N "checking for __builtin_labs declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_labs_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_labs_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -47293,14 +50570,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _finitel(0);
+ __builtin_labs(0);
   ;
   return 0;
 }
@@ -47327,12 +50600,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitel_use=yes
+  glibcxx_cv_func___builtin_labs_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitel_use=no
+glibcxx_cv_func___builtin_labs_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -47345,20 +50618,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
-
-    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
-
-for ac_func in _finitel
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_use" >&6
+  if test x$glibcxx_cv_func___builtin_labs_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_labs linkage" >&5
+echo $ECHO_N "checking for __builtin_labs linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_labs_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_labs_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -47369,47 +50639,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_labs(0);
   ;
   return 0;
 }
@@ -47436,47 +50670,49 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_labs_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_labs_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+      conftest$ac_exeext conftest.$ac_ext
 
 fi
-done
 
     fi
-  fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_link" >&6
+    if test x$glibcxx_cv_func___builtin_labs_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_labs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
 
-  echo "$as_me:$LINENO: checking for _float trig functions" >&5
-echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sqrtf declaration" >&5
+echo $ECHO_N "checking for __builtin_sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -47486,9 +50722,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _acosf _asinf _atanf \
-                                          _cosf _sinf _tanf \
-                                          _coshf _sinhf _tanhf; do echo "$x (0);"; done`
+ __builtin_sqrtf(0);
   ;
   return 0;
 }
@@ -47515,45 +50749,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_trig_use=yes
+  glibcxx_cv_func___builtin_sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_trig_use=no
+glibcxx_cv_func___builtin_sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
-  if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
-
-
-
-
-
-
-
 
+fi
 
-for ac_func in _acosf _asinf _atanf \
-                                          _cosf _sinf _tanf \
-                                          _coshf _sinhf _tanhf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_use" >&6
+  if test x$glibcxx_cv_func___builtin_sqrtf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sqrtf linkage" >&5
+echo $ECHO_N "checking for __builtin_sqrtf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sqrtf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sqrtf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -47564,47 +50788,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sqrtf(0);
   ;
   return 0;
 }
@@ -47631,44 +50819,48 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sqrtf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sqrtf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_link" >&6
+    if test x$glibcxx_cv_func___builtin_sqrtf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sqrtf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
+
+    fi
   fi
 
 
-  echo "$as_me:$LINENO: checking for _float round functions" >&5
-echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__float_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sqrt declaration" >&5
+echo $ECHO_N "checking for __builtin_sqrt declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sqrt_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sqrt_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -47678,7 +50870,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _ceilf _floorf; do echo "$x (0);"; done`
+ __builtin_sqrt(0);
   ;
   return 0;
 }
@@ -47705,36 +50897,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_round_use=yes
+  glibcxx_cv_func___builtin_sqrt_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_round_use=no
+glibcxx_cv_func___builtin_sqrt_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
-  if test x$glibcxx_cv_func__float_round_use = x"yes"; then
 
+fi
 
-for ac_func in _ceilf _floorf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_use" >&6
+  if test x$glibcxx_cv_func___builtin_sqrt_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sqrt linkage" >&5
+echo $ECHO_N "checking for __builtin_sqrt linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sqrt_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sqrt_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -47745,47 +50936,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sqrt(0);
   ;
   return 0;
 }
@@ -47812,45 +50967,48 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sqrt_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sqrt_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
-  fi
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_link" >&6
+    if test x$glibcxx_cv_func___builtin_sqrt_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sqrt | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
-  echo "$as_me:$LINENO: checking for _long double trig functions" >&5
-echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sqrtl declaration" >&5
+echo $ECHO_N "checking for __builtin_sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -47860,9 +51018,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _acosl _asinl _atanl \
-                                          _cosl _sinl _tanl \
-                                          _coshl _sinhl _tanhl; do echo "$x (0);"; done`
+ __builtin_sqrtl(0);
   ;
   return 0;
 }
@@ -47889,45 +51045,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_trig_use=yes
+  glibcxx_cv_func___builtin_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_trig_use=no
+glibcxx_cv_func___builtin_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
-  if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
-
-
-
-
-
-
-
 
+fi
 
-for ac_func in _acosl _asinl _atanl \
-                                          _cosl _sinl _tanl \
-                                          _coshl _sinhl _tanhl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_use" >&6
+  if test x$glibcxx_cv_func___builtin_sqrtl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sqrtl linkage" >&5
+echo $ECHO_N "checking for __builtin_sqrtl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sqrtl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sqrtl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -47938,47 +51084,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sqrtl(0);
   ;
   return 0;
 }
@@ -48005,44 +51115,49 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sqrtl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sqrtl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_link" >&6
+    if test x$glibcxx_cv_func___builtin_sqrtl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sqrtl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
+
+    fi
   fi
 
 
-  echo "$as_me:$LINENO: checking for _long double round functions" >&5
-echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for __builtin_sinf declaration" >&5
+echo $ECHO_N "checking for __builtin_sinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sinf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -48052,7 +51167,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _ceill _floorl; do echo "$x (0);"; done`
+ __builtin_sinf(0);
   ;
   return 0;
 }
@@ -48079,36 +51194,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_round_use=yes
+  glibcxx_cv_func___builtin_sinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_round_use=no
+glibcxx_cv_func___builtin_sinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
-  if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
 
+fi
 
-for ac_func in _ceill _floorl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_use" >&6
+  if test x$glibcxx_cv_func___builtin_sinf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sinf linkage" >&5
+echo $ECHO_N "checking for __builtin_sinf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sinf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sinf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -48119,47 +51233,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sinf(0);
   ;
   return 0;
 }
@@ -48186,38 +51264,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sinf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sinf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
-
-  fi
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_link" >&6
+    if test x$glibcxx_cv_func___builtin_sinf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sinf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
-  LIBS="$ac_save_LIBS"
-  CXXFLAGS="$ac_save_CXXFLAGS"
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_abs declaration" >&5
-echo $ECHO_N "checking for __builtin_abs declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_abs_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_abs_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sin declaration" >&5
+echo $ECHO_N "checking for __builtin_sin declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sin_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sin_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48239,7 +51315,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_abs(0);
+ __builtin_sin(0);
   ;
   return 0;
 }
@@ -48266,12 +51342,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_abs_use=yes
+  glibcxx_cv_func___builtin_sin_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_abs_use=no
+glibcxx_cv_func___builtin_sin_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48284,13 +51360,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_use" >&6
-  if test x$glibcxx_cv_func___builtin_abs_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_abs linkage" >&5
-echo $ECHO_N "checking for __builtin_abs linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_abs_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_abs_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_use" >&6
+  if test x$glibcxx_cv_func___builtin_sin_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sin linkage" >&5
+echo $ECHO_N "checking for __builtin_sin linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sin_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sin_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48309,7 +51385,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_abs(0);
+ __builtin_sin(0);
   ;
   return 0;
 }
@@ -48336,12 +51412,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_abs_link=yes
+  glibcxx_cv_func___builtin_sin_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_abs_link=no
+glibcxx_cv_func___builtin_sin_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -48349,10 +51425,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_link" >&6
-    if test x$glibcxx_cv_func___builtin_abs_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_abs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_link" >&6
+    if test x$glibcxx_cv_func___builtin_sin_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sin | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -48362,10 +51438,10 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_fabsf declaration" >&5
-echo $ECHO_N "checking for __builtin_fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sinl declaration" >&5
+echo $ECHO_N "checking for __builtin_sinl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sinl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sinl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48387,7 +51463,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabsf(0);
+ __builtin_sinl(0);
   ;
   return 0;
 }
@@ -48414,12 +51490,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsf_use=yes
+  glibcxx_cv_func___builtin_sinl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsf_use=no
+glibcxx_cv_func___builtin_sinl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48432,13 +51508,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_use" >&6
-  if test x$glibcxx_cv_func___builtin_fabsf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_fabsf linkage" >&5
-echo $ECHO_N "checking for __builtin_fabsf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_fabsf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_fabsf_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_use" >&6
+  if test x$glibcxx_cv_func___builtin_sinl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sinl linkage" >&5
+echo $ECHO_N "checking for __builtin_sinl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sinl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sinl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48457,7 +51533,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabsf(0);
+ __builtin_sinl(0);
   ;
   return 0;
 }
@@ -48484,12 +51560,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsf_link=yes
+  glibcxx_cv_func___builtin_sinl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsf_link=no
+glibcxx_cv_func___builtin_sinl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -48497,10 +51573,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_link" >&6
-    if test x$glibcxx_cv_func___builtin_fabsf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_fabsf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_link" >&6
+    if test x$glibcxx_cv_func___builtin_sinl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sinl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -48510,10 +51586,11 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_fabs declaration" >&5
-echo $ECHO_N "checking for __builtin_fabs declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_fabs_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_fabs_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for __builtin_cosf declaration" >&5
+echo $ECHO_N "checking for __builtin_cosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_cosf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_cosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48535,7 +51612,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabs(0);
+ __builtin_cosf(0);
   ;
   return 0;
 }
@@ -48562,12 +51639,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabs_use=yes
+  glibcxx_cv_func___builtin_cosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabs_use=no
+glibcxx_cv_func___builtin_cosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48580,13 +51657,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_use" >&6
-  if test x$glibcxx_cv_func___builtin_fabs_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_fabs linkage" >&5
-echo $ECHO_N "checking for __builtin_fabs linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_fabs_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_fabs_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_use" >&6
+  if test x$glibcxx_cv_func___builtin_cosf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_cosf linkage" >&5
+echo $ECHO_N "checking for __builtin_cosf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_cosf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_cosf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48605,7 +51682,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabs(0);
+ __builtin_cosf(0);
   ;
   return 0;
 }
@@ -48632,12 +51709,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabs_link=yes
+  glibcxx_cv_func___builtin_cosf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabs_link=no
+glibcxx_cv_func___builtin_cosf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -48645,10 +51722,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_link" >&6
-    if test x$glibcxx_cv_func___builtin_fabs_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_fabs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_link" >&6
+    if test x$glibcxx_cv_func___builtin_cosf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_cosf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -48658,10 +51735,10 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_fabsl declaration" >&5
-echo $ECHO_N "checking for __builtin_fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_cos declaration" >&5
+echo $ECHO_N "checking for __builtin_cos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_cos_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_cos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48683,7 +51760,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabsl(0);
+ __builtin_cos(0);
   ;
   return 0;
 }
@@ -48710,12 +51787,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsl_use=yes
+  glibcxx_cv_func___builtin_cos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsl_use=no
+glibcxx_cv_func___builtin_cos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48728,13 +51805,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_use" >&6
-  if test x$glibcxx_cv_func___builtin_fabsl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_fabsl linkage" >&5
-echo $ECHO_N "checking for __builtin_fabsl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_fabsl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_fabsl_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_use" >&6
+  if test x$glibcxx_cv_func___builtin_cos_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_cos linkage" >&5
+echo $ECHO_N "checking for __builtin_cos linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_cos_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_cos_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48753,7 +51830,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_fabsl(0);
+ __builtin_cos(0);
   ;
   return 0;
 }
@@ -48780,12 +51857,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsl_link=yes
+  glibcxx_cv_func___builtin_cos_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsl_link=no
+glibcxx_cv_func___builtin_cos_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -48793,10 +51870,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_link" >&6
-    if test x$glibcxx_cv_func___builtin_fabsl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_fabsl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_link" >&6
+    if test x$glibcxx_cv_func___builtin_cos_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_cos | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -48806,10 +51883,10 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_labs declaration" >&5
-echo $ECHO_N "checking for __builtin_labs declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_labs_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_labs_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_cosl declaration" >&5
+echo $ECHO_N "checking for __builtin_cosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_cosl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_cosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48831,7 +51908,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_labs(0);
+ __builtin_cosl(0);
   ;
   return 0;
 }
@@ -48858,12 +51935,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_labs_use=yes
+  glibcxx_cv_func___builtin_cosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_labs_use=no
+glibcxx_cv_func___builtin_cosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48876,13 +51953,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_use" >&6
-  if test x$glibcxx_cv_func___builtin_labs_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_labs linkage" >&5
-echo $ECHO_N "checking for __builtin_labs linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_labs_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_labs_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_use" >&6
+  if test x$glibcxx_cv_func___builtin_cosl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_cosl linkage" >&5
+echo $ECHO_N "checking for __builtin_cosl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_cosl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_cosl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48901,7 +51978,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_labs(0);
+ __builtin_cosl(0);
   ;
   return 0;
 }
@@ -48928,12 +52005,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_labs_link=yes
+  glibcxx_cv_func___builtin_cosl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_labs_link=no
+glibcxx_cv_func___builtin_cosl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -48941,10 +52018,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_link" >&6
-    if test x$glibcxx_cv_func___builtin_labs_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_labs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_link" >&6
+    if test x$glibcxx_cv_func___builtin_cosl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_cosl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -48955,87 +52032,199 @@ _ACEOF
 
 
 
-  echo "$as_me:$LINENO: checking for __builtin_sqrtf declaration" >&5
-echo $ECHO_N "checking for __builtin_sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sqrtf_use+set}" = set; then
+
+echo "$as_me:$LINENO: checking for main in -lm" >&5
+echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_main+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
 
+int
+main ()
+{
+main ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_m_main=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+ac_cv_lib_m_main=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
+echo "${ECHO_T}$ac_cv_lib_m_main" >&6
+if test $ac_cv_lib_m_main = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
 
-      cat >conftest.$ac_ext <<_ACEOF
+  LIBS="-lm $LIBS"
+
+fi
+
+
+for ac_func in copysignf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sqrtf(0);
+return f != $ac_func;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtf_use=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtf_use=no
+eval "$as_ac_var=no"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
+done
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_use" >&6
-  if test x$glibcxx_cv_func___builtin_sqrtf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sqrtf linkage" >&5
-echo $ECHO_N "checking for __builtin_sqrtf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sqrtf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sqrtf_link+set}" = set; then
+
+
+for ac_func in __signbit
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -49046,11 +52235,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sqrtf(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -49077,113 +52302,150 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtf_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtf_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_link" >&6
-    if test x$glibcxx_cv_func___builtin_sqrtf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sqrtf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-    fi
-  fi
-
-
-  echo "$as_me:$LINENO: checking for __builtin_sqrt declaration" >&5
-echo $ECHO_N "checking for __builtin_sqrt declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sqrt_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sqrt_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
+fi
+done
 
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+for ac_func in __signbitf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sqrt(0);
+return f != $ac_func;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrt_use=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrt_use=no
+eval "$as_ac_var=no"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
+done
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_use" >&6
-  if test x$glibcxx_cv_func___builtin_sqrt_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sqrt linkage" >&5
-echo $ECHO_N "checking for __builtin_sqrt linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sqrt_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sqrt_link+set}" = set; then
+
+          if test x$ac_cv_func_copysignl = x"yes"; then
+
+for ac_func in __signbitl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -49194,11 +52456,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sqrt(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -49225,58 +52523,52 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrt_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrt_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_link" >&6
-    if test x$glibcxx_cv_func___builtin_sqrt_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sqrt | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-    fi
-  fi
-
-
-  echo "$as_me:$LINENO: checking for __builtin_sqrtl declaration" >&5
-echo $ECHO_N "checking for __builtin_sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sqrtl_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
+fi
+done
 
+  fi
 
+  # Used in libmath/Makefile.am.
+  if test -n "$LIBMATHOBJS"; then
+    need_libmath=yes
+  fi
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+
+  # Test wchar.h for mbstate_t, which is needed for char_traits and
+  # others even if wchar_t support is not on.
+  echo "$as_me:$LINENO: checking for mbstate_t" >&5
+echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <wchar.h>
 int
 main ()
 {
- __builtin_sqrtl(0);
+mbstate_t teststate;
   ;
   return 0;
 }
@@ -49290,7 +52582,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -49303,57 +52595,52 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtl_use=yes
+  have_mbstate_t=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtl_use=no
+have_mbstate_t=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
+echo "${ECHO_T}$have_mbstate_t" >&6
+  if test x"$have_mbstate_t" = xyes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MBSTATE_T 1
+_ACEOF
 
+  fi
 
-fi
+  # Sanity check for existence of ISO C99 headers for extended encoding.
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_use" >&6
-  if test x$glibcxx_cv_func___builtin_sqrtl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sqrtl linkage" >&5
-echo $ECHO_N "checking for __builtin_sqrtl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sqrtl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sqrtl_link+set}" = set; then
+for ac_header in wchar.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_sqrtl(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -49367,68 +52654,141 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtl_link=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtl_link=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+ac_header_compiler=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_link" >&6
-    if test x$glibcxx_cv_func___builtin_sqrtl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sqrtl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
-
-    fi
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
   fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-
-  echo "$as_me:$LINENO: checking for __builtin_sinf declaration" >&5
-echo $ECHO_N "checking for __builtin_sinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sinf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sinf_use+set}" = set; then
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+ ac_has_wchar_h=yes
+else
+  ac_has_wchar_h=no
+fi
 
+done
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+for ac_header in wctype.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_sinf(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -49439,7 +52799,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -49452,128 +52812,132 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinf_use=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinf_use=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_use" >&6
-  if test x$glibcxx_cv_func___builtin_sinf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sinf linkage" >&5
-echo $ECHO_N "checking for __builtin_sinf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sinf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sinf_link+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_sinf(0);
-  ;
-  return 0;
-}
+#include <$ac_header>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinf_link=yes
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinf_link=no
+  ac_header_preproc=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_link" >&6
-    if test x$glibcxx_cv_func___builtin_sinf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sinf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
-
-    fi
-  fi
-
-
-  echo "$as_me:$LINENO: checking for __builtin_sin declaration" >&5
-echo $ECHO_N "checking for __builtin_sin declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sin_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sin_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
+ ac_has_wctype_h=yes
 else
+  ac_has_wctype_h=no
+fi
 
+done
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+  # Only continue checking if the ISO C99 headers exist and support is on.
+  if test x"$ac_has_wchar_h" = xyes &&
+     test x"$ac_has_wctype_h" = xyes &&
+     test x"$enable_c_mbchar" != xno; then
 
-      cat >conftest.$ac_ext <<_ACEOF
+    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
+    # numeric_limits can instantiate type_traits<wchar_t>
+    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
+echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <wchar.h>
 int
 main ()
 {
- __builtin_sin(0);
+int i = WCHAR_MIN; int j = WCHAR_MAX;
   ;
   return 0;
 }
@@ -49587,7 +52951,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -49600,128 +52964,34 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sin_use=yes
+  has_wchar_minmax=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sin_use=no
+has_wchar_minmax=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_use" >&6
-  if test x$glibcxx_cv_func___builtin_sin_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sin linkage" >&5
-echo $ECHO_N "checking for __builtin_sin linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sin_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sin_link+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
+echo "${ECHO_T}$has_wchar_minmax" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    # Test wchar.h for WEOF, which is what we use to determine whether
+    # to specialize for char_traits<wchar_t> or not.
+    echo "$as_me:$LINENO: checking for WEOF" >&5
+echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_sin(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sin_link=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func___builtin_sin_link=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
-fi
-
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_link" >&6
-    if test x$glibcxx_cv_func___builtin_sin_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sin | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
-
-    fi
-  fi
-
-
-  echo "$as_me:$LINENO: checking for __builtin_sinl declaration" >&5
-echo $ECHO_N "checking for __builtin_sinl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sinl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sinl_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
+      #include <wchar.h>
+      #include <stddef.h>
 int
 main ()
 {
- __builtin_sinl(0);
+wint_t i = WEOF;
   ;
   return 0;
 }
@@ -49735,7 +53005,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -49748,35 +53018,34 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinl_use=yes
+  has_weof=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinl_use=no
+has_weof=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+    echo "$as_me:$LINENO: result: $has_weof" >&5
+echo "${ECHO_T}$has_weof" >&6
 
+    # Tests for wide character functions used in char_traits<wchar_t>.
+    ac_wfuncs=yes
 
-fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_use" >&6
-  if test x$glibcxx_cv_func___builtin_sinl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sinl linkage" >&5
-echo $ECHO_N "checking for __builtin_sinl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sinl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sinl_link+set}" = set; then
+
+
+
+
+for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -49787,11 +53056,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sinl(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -49818,114 +53123,207 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinl_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinl_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  ac_wfuncs=no
 fi
+done
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_link" >&6
-    if test x$glibcxx_cv_func___builtin_sinl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sinl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
+    # Checks for names injected into std:: by the c_std headers.
 
-    fi
-  fi
 
 
 
-  echo "$as_me:$LINENO: checking for __builtin_cosf declaration" >&5
-echo $ECHO_N "checking for __builtin_cosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_cosf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_cosf_use+set}" = set; then
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
+    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
+    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
+    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
+    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
+    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
 int
 main ()
 {
- __builtin_cosf(0);
+return f != $ac_func;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosf_use=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosf_use=no
+eval "$as_ac_var=no"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  ac_wfuncs=no
 fi
+done
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_use" >&6
-  if test x$glibcxx_cv_func___builtin_cosf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_cosf linkage" >&5
-echo $ECHO_N "checking for __builtin_cosf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_cosf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_cosf_link+set}" = set; then
+
+    # Checks for wide character functions that are not required
+    # for basic wchar_t support.  Don't disable support if they are missing.
+    # Injection of these is wrapped with guard macros.
+
+
+
+
+
+for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -49936,11 +53334,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_cosf(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -49967,61 +53401,62 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosf_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosf_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_link" >&6
-    if test x$glibcxx_cv_func___builtin_cosf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_cosf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+fi
+done
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
 
+    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
+echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
+    if test x"$has_weof" = xyes &&
+       test x"$has_wchar_minmax" = xyes &&
+       test x"$ac_wfuncs" = xyes;
+    then
+      ac_isoC99_wchar_t=yes
+    else
+      ac_isoC99_wchar_t=no
     fi
-  fi
-
+    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
+echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
 
-  echo "$as_me:$LINENO: checking for __builtin_cos declaration" >&5
-echo $ECHO_N "checking for __builtin_cos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_cos_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_cos_use+set}" = set; then
+    # Use iconv for wchar_t to char conversions. As such, check for
+    # X/Open Portability Guide, version 2 features (XPG2).
+    if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking iconv.h usability" >&5
+echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_cos(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <iconv.h>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -50032,7 +53467,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -50045,131 +53480,127 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cos_use=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cos_use=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_use" >&6
-  if test x$glibcxx_cv_func___builtin_cos_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_cos linkage" >&5
-echo $ECHO_N "checking for __builtin_cos linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_cos_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_cos_link+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
+# Is the header present?
+echo "$as_me:$LINENO: checking iconv.h presence" >&5
+echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_cos(0);
-  ;
-  return 0;
-}
+#include <iconv.h>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cos_link=yes
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cos_link=no
+  ac_header_preproc=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_iconv_h=$ac_header_preproc
 fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_link" >&6
-    if test x$glibcxx_cv_func___builtin_cos_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_cos | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
-
-    fi
-  fi
+fi
+if test $ac_cv_header_iconv_h = yes; then
+  ac_has_iconv_h=yes
+else
+  ac_has_iconv_h=no
+fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_cosl declaration" >&5
-echo $ECHO_N "checking for __builtin_cosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_cosl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_cosl_use+set}" = set; then
+    if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking langinfo.h usability" >&5
+echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_cosl(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <langinfo.h>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -50180,7 +53611,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -50193,111 +53624,116 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosl_use=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosl_use=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_use" >&6
-  if test x$glibcxx_cv_func___builtin_cosl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_cosl linkage" >&5
-echo $ECHO_N "checking for __builtin_cosl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_cosl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_cosl_link+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
+# Is the header present?
+echo "$as_me:$LINENO: checking langinfo.h presence" >&5
+echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_cosl(0);
-  ;
-  return 0;
-}
+#include <langinfo.h>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosl_link=yes
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosl_link=no
+  ac_header_preproc=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_langinfo_h=$ac_header_preproc
 fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_link" >&6
-    if test x$glibcxx_cv_func___builtin_cosl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_cosl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
-
-    fi
-  fi
-
+fi
+if test $ac_cv_header_langinfo_h = yes; then
+  ac_has_langinfo_h=yes
+else
+  ac_has_langinfo_h=no
+fi
 
 
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
+    # Check for existence of libiconv.a providing XPG2 wchar_t support.
+    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
+echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
+if test "${ac_cv_lib_iconv_iconv+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
+LIBS="-liconv  $LIBS"
 if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
@@ -50310,11 +53746,17 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char iconv ();
 int
 main ()
 {
-main ();
+iconv ();
   ;
   return 0;
 }
@@ -50341,30 +53783,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  ac_cv_lib_iconv_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
+ac_cv_lib_iconv_iconv=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
+echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
+echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
+if test $ac_cv_lib_iconv_iconv = yes; then
+  LIBICONV="-liconv"
+fi
 
-  LIBS="-lm $LIBS"
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
 
-fi
 
 
-for ac_func in copysignf
+
+
+
+for ac_func in iconv_open iconv_close iconv nl_langinfo
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -50466,15 +53910,126 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_XPG2funcs=yes
 else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
+  ac_XPG2funcs=no
 fi
 done
 
 
+    LIBS="$ac_save_LIBS"
 
-for ac_func in __signbit
+    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
+echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
+    if test x"$ac_has_iconv_h" = xyes &&
+       test x"$ac_has_langinfo_h" = xyes &&
+       test x"$ac_XPG2funcs" = xyes;
+    then
+      ac_XPG2_wchar_t=yes
+    else
+      ac_XPG2_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
+echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
+
+    # At the moment, only enable wchar_t specializations if all the
+    # above support is present.
+    if test x"$ac_isoC99_wchar_t" = xyes &&
+       test x"$ac_XPG2_wchar_t" = xyes;
+    then
+      cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
+_ACEOF
+
+      enable_wchar_t=yes
+    fi
+  fi
+  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
+echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
+  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
+echo "${ECHO_T}$enable_wchar_t" >&6
+
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+
+  echo "$as_me:$LINENO: checking for strtold declaration" >&5
+echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main ()
+{
+ strtold(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_strtold_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_strtold_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
+  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
+
+for ac_func in strtold
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -50577,14 +54132,87 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
+  fi
 
 
-for ac_func in __signbitf
+  echo "$as_me:$LINENO: checking for strtof declaration" >&5
+echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main ()
+{
+ strtof(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_strtof_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_strtof_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
+  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
+
+for ac_func in strtof
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -50687,74 +54315,190 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
 done
 
+  fi
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
 
-for ac_func in __signbitl
+  CXXFLAGS="$ac_save_CXXFLAGS"
+
+
+    # For showmanyc_helper().
+
+
+for ac_header in sys/ioctl.h sys/filio.h
 do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
-#undef $ac_func
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
 
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
 
+  if test "${glibcxx_cv_POLL+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <poll.h>
 int
 main ()
 {
-return f != $ac_func;
+struct pollfd pfd[1];
+       pfd[0].events = POLLIN;
+       poll(pfd, 1, 0);
   ;
   return 0;
 }
@@ -50781,59 +54525,115 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_POLL=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_POLL=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+
+  if test $glibcxx_cv_POLL = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_POLL 1
 _ACEOF
 
+  fi
+
+
+  if test "${glibcxx_cv_S_ISREG+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
-fi
-done
 
-  fi
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat buffer;
+       fstat(0, &buffer);
+       S_ISREG(buffer.st_mode);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_S_ISREG=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
+glibcxx_cv_S_ISREG=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
+fi
 
+  if test "${glibcxx_cv_S_IFREG+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-  # Test wchar.h for mbstate_t, which is needed for char_traits and
-  # others even if wchar_t support is not on.
-  echo "$as_me:$LINENO: checking for mbstate_t" >&5
-echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
-  cat >conftest.$ac_ext <<_ACEOF
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <wchar.h>
+#include <sys/stat.h>
 int
 main ()
 {
-mbstate_t teststate;
+struct stat buffer;
+       fstat(0, &buffer);
+       S_IFREG & buffer.st_mode;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -50847,32 +54647,40 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  have_mbstate_t=yes
+  glibcxx_cv_S_IFREG=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-have_mbstate_t=no
+glibcxx_cv_S_IFREG=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
-echo "${ECHO_T}$have_mbstate_t" >&6
-  if test x"$have_mbstate_t" = xyes; then
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+fi
+
+  if test $glibcxx_cv_S_ISREG = yes; then
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_MBSTATE_T 1
+#define HAVE_S_ISREG 1
+_ACEOF
+
+  elif test $glibcxx_cv_S_IFREG = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_IFREG 1
 _ACEOF
 
   fi
 
-  # Sanity check for existence of ISO C99 headers for extended encoding.
 
-for ac_header in wchar.h
+    # For xsputn_2().
+
+for ac_header in sys/uio.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -51016,15 +54824,167 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
- ac_has_wchar_h=yes
-else
-  ac_has_wchar_h=no
+
 fi
 
 done
 
 
-for ac_header in wctype.h
+  if test "${glibcxx_cv_WRITEV+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/uio.h>
+int
+main ()
+{
+struct iovec iov[2];
+       writev(0, iov, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_WRITEV=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_WRITEV=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+fi
+
+  if test $glibcxx_cv_WRITEV = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_WRITEV 1
+_ACEOF
+
+  fi
+
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LC_MESSAGES 1
+_ACEOF
+
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <setjmp.h>
+int
+main ()
+{
+sigjmp_buf env;
+       while (! sigsetjmp (env, 1))
+         siglongjmp (env, 1);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_SIGSETJMP 1
+_ACEOF
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MMAP 1
+_ACEOF
+
+    ;;
+
+  *djgpp)
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_header in float.h ieeefp.h inttypes.h locale.h \
+      memory.h stdint.h stdlib.h strings.h string.h unistd.h \
+      wchar.h wctype.h machine/endian.h sys/ioctl.h sys/param.h \
+      sys/resource.h sys/stat.h sys/time.h sys/types.h sys/uio.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -51168,34 +55128,48 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
- ac_has_wctype_h=yes
-else
-  ac_has_wctype_h=no
+
 fi
 
 done
 
 
-  # Only continue checking if the ISO C99 headers exist and support is on.
-  if test x"$ac_has_wchar_h" = xyes &&
-     test x"$ac_has_wctype_h" = xyes &&
-     test x"$enable_c_mbchar" != xno; then
+  # All these tests are for C++; save the language and the compiler flags.
+  # The CXXFLAGS thing is suspicious, but based on similar bits previously
+  # found in GLIBCXX_CONFIGURE.
 
-    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
-    # numeric_limits can instantiate type_traits<wchar_t>
-    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
-echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
+
+  ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+
+  # Check for maintainer-mode bits.
+  if test x"$USE_MAINTAINER_MODE" = xno; then
+    WERROR=''
+  else
+    WERROR='-Werror'
+  fi
+
+  # Check for -ffunction-sections -fdata-sections
+  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
+echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
+  CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <wchar.h>
+
 int
 main ()
 {
-int i = WCHAR_MIN; int j = WCHAR_MAX;
+int foo;
   ;
   return 0;
 }
@@ -51209,7 +55183,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -51222,34 +55196,261 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  has_wchar_minmax=yes
+  ac_fdsections=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-has_wchar_minmax=no
+ac_fdsections=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
-echo "${ECHO_T}$has_wchar_minmax" >&6
+  if test "$ac_test_CXXFLAGS" = set; then
+    CXXFLAGS="$ac_save_CXXFLAGS"
+  else
+    # this is the suspicious part
+    CXXFLAGS=''
+  fi
+  if test x"$ac_fdsections" = x"yes"; then
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+  fi
+  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
+echo "${ECHO_T}$ac_fdsections" >&6
 
-    # Test wchar.h for WEOF, which is what we use to determine whether
-    # to specialize for char_traits<wchar_t> or not.
-    echo "$as_me:$LINENO: checking for WEOF" >&5
-echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+
+  ldver=`$LD --version 2>/dev/null | head -1 | \
+         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
+
+  glibcxx_gnu_ld_version=`echo $ldver | \
+         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+
+  # Set --gc-sections.
+  if test "$with_gnu_ld" = "notbroken"; then
+    # GNU ld it is!  Joy and bunny rabbits!
+
+    # All these tests are for C++; save the language and the compiler flags.
+    # Need to do this so that g++ won't try to link in libstdc++
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-x c++  -Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    # XXX This test is broken at the moment, as symbols required for linking
+    # are now in libsupc++ (not built yet).  In addition, this test has
+    # cored on solaris in the past.  In addition, --gc-sections doesn't
+    # really work at the moment (keeps on discarding used sections, first
+    # .eh_frame and now some of the glibc sections for iconv).
+    # Bzzzzt.  Thanks for playing, maybe next time.
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test "$cross_compiling" = yes; then
+  ac_sectionLDflags=yes
+else
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-      #include <wchar.h>
-      #include <stddef.h>
+     int main(void)
+     {
+       try { throw 1; }
+       catch (...) { };
+       return 0;
+     }
+
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_sectionLDflags=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_sectionLDflags=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+    if test "$ac_sectionLDflags" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
+echo "${ECHO_T}$ac_sectionLDflags" >&6
+  fi
+
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
+
+
+
+
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+    echo "$as_me:$LINENO: checking for sin in -lm" >&5
+echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_sin+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sin ();
 int
 main ()
 {
-wint_t i = WEOF;
+sin ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_m_sin=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_m_sin=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
+echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
+if test $ac_cv_lib_m_sin = yes; then
+  libm="-lm"
+fi
+
+  ac_save_LIBS="$LIBS"
+  LIBS="$LIBS $libm"
+
+
+
+  echo "$as_me:$LINENO: checking for isinf declaration" >&5
+echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ isinf(0);
   ;
   return 0;
 }
@@ -51263,7 +55464,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -51276,26 +55477,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  has_weof=yes
+  glibcxx_cv_func_isinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-has_weof=no
+glibcxx_cv_func_isinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_weof" >&5
-echo "${ECHO_T}$has_weof" >&6
-
-    # Tests for wide character functions used in char_traits<wchar_t>.
-    ac_wfuncs=yes
-
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
 
+  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
 
-for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
+for ac_func in isinf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -51398,65 +55603,91 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  ac_wfuncs=no
 fi
 done
 
+  else
 
-    # Checks for names injected into std:: by the c_std headers.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
+echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
 
+int
+main ()
+{
+ _isinf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isinf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+glibcxx_cv_func__isinf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
 
+    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
 
-for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
-    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
-    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
-    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
-    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
-    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
+for ac_func in _isinf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -51559,21 +55790,94 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  ac_wfuncs=no
 fi
 done
 
+    fi
+  fi
 
-    # Checks for wide character functions that are not required
-    # for basic wchar_t support.  Don't disable support if they are missing.
-    # Injection of these is wrapped with guard macros.
 
 
+  echo "$as_me:$LINENO: checking for isnan declaration" >&5
+echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
+int
+main ()
+{
+ isnan(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isnan_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isnan_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
+
+  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
+
+for ac_func in isnan
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -51679,394 +55983,88 @@ _ACEOF
 fi
 done
 
-
-    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
-echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
-    if test x"$has_weof" = xyes &&
-       test x"$has_wchar_minmax" = xyes &&
-       test x"$ac_wfuncs" = xyes;
-    then
-      ac_isoC99_wchar_t=yes
-    else
-      ac_isoC99_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
-echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
-
-    # Use iconv for wchar_t to char conversions. As such, check for
-    # X/Open Portability Guide, version 2 features (XPG2).
-    if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking iconv.h usability" >&5
-echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-#include <iconv.h>
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_header_compiler=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking iconv.h presence" >&5
-echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <iconv.h>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_header_iconv_h=$ac_header_preproc
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
-
-fi
-if test $ac_cv_header_iconv_h = yes; then
-  ac_has_iconv_h=yes
-else
-  ac_has_iconv_h=no
-fi
-
-
-    if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking langinfo.h usability" >&5
-echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-#include <langinfo.h>
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_header_compiler=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking langinfo.h presence" >&5
-echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <langinfo.h>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
   else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
 
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
+echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_cv_header_langinfo_h=$ac_header_preproc
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 
-fi
-if test $ac_cv_header_langinfo_h = yes; then
-  ac_has_langinfo_h=yes
-else
-  ac_has_langinfo_h=no
-fi
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    # Check for existence of libiconv.a providing XPG2 wchar_t support.
-    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
-echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
-if test "${ac_cv_lib_iconv_iconv+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-liconv  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
 
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char iconv ();
 int
 main ()
 {
-iconv ();
+ _isnan(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_iconv_iconv=yes
+  glibcxx_cv_func__isnan_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_iconv_iconv=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
-echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
-if test $ac_cv_lib_iconv_iconv = yes; then
-  LIBICONV="-liconv"
+glibcxx_cv_func__isnan_use=no
 fi
-
-    ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIBICONV"
-
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
 
+    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
 
-for ac_func in iconv_open iconv_close iconv nl_langinfo
+for ac_func in _isnan
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -52168,55 +56166,19 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
- ac_XPG2funcs=yes
-else
-  ac_XPG2funcs=no
+
 fi
 done
 
-
-    LIBS="$ac_save_LIBS"
-
-    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
-echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
-    if test x"$ac_has_iconv_h" = xyes &&
-       test x"$ac_has_langinfo_h" = xyes &&
-       test x"$ac_XPG2funcs" = xyes;
-    then
-      ac_XPG2_wchar_t=yes
-    else
-      ac_XPG2_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
-echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
-
-    # At the moment, only enable wchar_t specializations if all the
-    # above support is present.
-    if test x"$ac_isoC99_wchar_t" = xyes &&
-       test x"$ac_XPG2_wchar_t" = xyes;
-    then
-      cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_WCHAR_T 1
-_ACEOF
-
-      enable_wchar_t=yes
     fi
   fi
-  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
-echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
-  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
-echo "${ECHO_T}$enable_wchar_t" >&6
 
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-
 
-  echo "$as_me:$LINENO: checking for strtold declaration" >&5
-echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finite declaration" >&5
+echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finite_use+set} != xset; then
+    if test "${glibcxx_cv_func_finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -52234,11 +56196,15 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- strtold(0, 0);
+ finite(0);
   ;
   return 0;
 }
@@ -52265,12 +56231,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtold_use=yes
+  glibcxx_cv_func_finite_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtold_use=no
+glibcxx_cv_func_finite_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -52283,11 +56249,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
-  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
 
-for ac_func in strtold
+  if test x$glibcxx_cv_func_finite_use = x"yes"; then
+
+for ac_func in finite
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -52393,13 +56360,12 @@ _ACEOF
 fi
 done
 
-  fi
-
+  else
 
-  echo "$as_me:$LINENO: checking for strtof declaration" >&5
-echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finite declaration" >&5
+echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finite_use+set} != xset; then
+    if test "${glibcxx_cv_func__finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -52417,11 +56383,15 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- strtof(0, 0);
+ _finite(0);
   ;
   return 0;
 }
@@ -52448,12 +56418,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtof_use=yes
+  glibcxx_cv_func__finite_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtof_use=no
+glibcxx_cv_func__finite_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -52466,11 +56436,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
-  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
 
-for ac_func in strtof
+    if test x$glibcxx_cv_func__finite_use = x"yes"; then
+
+for ac_func in _finite
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -52576,38 +56547,40 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
-  CXXFLAGS="$ac_save_CXXFLAGS"
+
+  echo "$as_me:$LINENO: checking for copysign declaration" >&5
+echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
+    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
 
-    # For showmanyc_helper().
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-for ac_header in sys/ioctl.h sys/filio.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+#include <math.h>
+int
+main ()
+{
+ copysign(0, 0);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -52618,7 +56591,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -52631,115 +56604,38 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  glibcxx_cv_func_copysign_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
+glibcxx_cv_func_copysign_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
 
 fi
 
-done
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
 
+  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
 
-  if test "${glibcxx_cv_POLL+set}" = set; then
+for ac_func in copysign
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-    if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -52750,13 +56646,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <poll.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-struct pollfd pfd[1];
-       pfd[0].events = POLLIN;
-       poll(pfd, 1, 0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -52783,91 +56713,112 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_POLL=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_POLL=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-  if test $glibcxx_cv_POLL = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_POLL 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-  fi
+fi
+done
 
+  else
 
-  if test "${glibcxx_cv_S_ISREG+set}" = set; then
+  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
+echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
+    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <sys/stat.h>
+#include <math.h>
 int
 main ()
 {
-struct stat buffer;
-       fstat(0, &buffer);
-       S_ISREG(buffer.st_mode);
+ _copysign(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_S_ISREG=yes
+  glibcxx_cv_func__copysign_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_S_ISREG=no
+glibcxx_cv_func__copysign_use=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
 fi
 
-  if test "${glibcxx_cv_S_IFREG+set}" = set; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
+
+    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
+
+for ac_func in _copysign
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-    if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -52878,13 +56829,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <sys/stat.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-struct stat buffer;
-       fstat(0, &buffer);
-       S_IFREG & buffer.st_mode;
+return f != $ac_func;
   ;
   return 0;
 }
@@ -52911,56 +56896,60 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_S_IFREG=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_S_IFREG=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-  if test $glibcxx_cv_S_ISREG = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_ISREG 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-  elif test $glibcxx_cv_S_IFREG = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_IFREG 1
-_ACEOF
+fi
+done
 
+    fi
   fi
 
 
-    # For xsputn_2().
 
-for ac_header in sys/uio.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for sincos declaration" >&5
+echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+#include <math.h>
+int
+main ()
+{
+ sincos(0, 0, 0);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -52971,7 +56960,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -52984,115 +56973,38 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  glibcxx_cv_func_sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
+glibcxx_cv_func_sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
 
 fi
 
-done
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
 
+  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
 
-  if test "${glibcxx_cv_WRITEV+set}" = set; then
+for ac_func in sincos
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-    if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -53103,12 +57015,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <sys/uio.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-struct iovec iov[2];
-       writev(0, iov, 0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -53135,45 +57082,54 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_WRITEV=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_WRITEV=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
 fi
+done
 
-  if test $glibcxx_cv_WRITEV = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_WRITEV 1
-_ACEOF
+  else
 
-  fi
+  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
+echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LC_MESSAGES 1
-_ACEOF
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <setjmp.h>
+#include <math.h>
 int
 main ()
 {
-sigjmp_buf env;
-       while (! sigsetjmp (env, 1))
-         siglongjmp (env, 1);
-
+ _sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -53187,7 +57143,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
+	 { ac_try='test -z "$ac_cxx_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -53200,75 +57156,96 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_SIGSETJMP 1
-_ACEOF
-
+  glibcxx_cv_func__sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
+glibcxx_cv_func__sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MMAP 1
-_ACEOF
-
-    ;;
-
-  *djgpp)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
 
+    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
 
-for ac_header in float.h ieeefp.h inttypes.h locale.h \
-      memory.h stdint.h stdlib.h strings.h string.h unistd.h \
-      wchar.h wctype.h machine/endian.h sys/ioctl.h sys/param.h \
-      sys/resource.h sys/stat.h sys/time.h sys/types.h sys/uio.h
+for ac_func in _sincos
 do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -53282,152 +57259,67 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_header_compiler=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
+eval "$as_ac_var=no"
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
 fi
-
 done
 
+    fi
+  fi
 
-  # All these tests are for C++; save the language and the compiler flags.
-  # The CXXFLAGS thing is suspicious, but based on similar bits previously
-  # found in GLIBCXX_CONFIGURE.
 
 
-  ac_ext=cc
+  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
+echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-
-  # Check for maintainer-mode bits.
-  if test x"$USE_MAINTAINER_MODE" = xno; then
-    WERROR=''
-  else
-    WERROR='-Werror'
-  fi
-
-  # Check for -ffunction-sections -fdata-sections
-  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
-echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
-  CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
-  cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+#include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
 
 int
 main ()
 {
-int foo;
+ fpclass(0);
   ;
   return 0;
 }
@@ -53454,161 +57346,38 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_fdsections=yes
+  glibcxx_cv_func_fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_fdsections=no
+glibcxx_cv_func_fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  if test "$ac_test_CXXFLAGS" = set; then
-    CXXFLAGS="$ac_save_CXXFLAGS"
-  else
-    # this is the suspicious part
-    CXXFLAGS=''
-  fi
-  if test x"$ac_fdsections" = x"yes"; then
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-  fi
-  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
-echo "${ECHO_T}$ac_fdsections" >&6
-
-  ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
-
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
-
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-
-  ldver=`$LD --version 2>/dev/null | head -1 | \
-         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
-
-  glibcxx_gnu_ld_version=`echo $ldver | \
-         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-
-  # Set --gc-sections.
-  if test "$with_gnu_ld" = "notbroken"; then
-    # GNU ld it is!  Joy and bunny rabbits!
-
-    # All these tests are for C++; save the language and the compiler flags.
-    # Need to do this so that g++ won't try to link in libstdc++
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Wl,--gc-sections'
-
-    # Check for -Wl,--gc-sections
-    # XXX This test is broken at the moment, as symbols required for linking
-    # are now in libsupc++ (not built yet).  In addition, this test has
-    # cored on solaris in the past.  In addition, --gc-sections doesn't
-    # really work at the moment (keeps on discarding used sections, first
-    # .eh_frame and now some of the glibc sections for iconv).
-    # Bzzzzt.  Thanks for playing, maybe next time.
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test "$cross_compiling" = yes; then
-  ac_sectionLDflags=yes
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-     int main(void)
-     {
-       try { throw 1; }
-       catch (...) { };
-       return 0;
-     }
-
-_ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_sectionLDflags=yes
-else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-( exit $ac_status )
-ac_sectionLDflags=no
 fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
-fi
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-    if test "$ac_sectionLDflags" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
-echo "${ECHO_T}$ac_sectionLDflags" >&6
-  fi
 
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
 
+  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
 
-
-
-
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-
-    echo "$as_me:$LINENO: checking for sin in -lm" >&5
-echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_sin+set}" = set; then
+for ac_func in fpclass
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -53619,18 +57388,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
+{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char sin ();
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-sin ();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -53657,32 +57455,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_sin=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_sin=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
-echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
-if test $ac_cv_lib_m_sin = yes; then
-  libm="-lm"
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-  ac_save_LIBS="$LIBS"
-  LIBS="$LIBS $libm"
-
+fi
+done
 
+  else
 
-  echo "$as_me:$LINENO: checking for isinf declaration" >&5
-echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
+echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -53708,7 +57506,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isinf(0);
+ _fpclass(0);
   ;
   return 0;
 }
@@ -53735,12 +57533,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinf_use=yes
+  glibcxx_cv_func__fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinf_use=no
+glibcxx_cv_func__fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -53753,12 +57551,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
 
-  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
+    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
 
-for ac_func in isinf
+for ac_func in _fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -53864,12 +57662,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
-echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
+echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -53895,7 +57696,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isinf(0);
+ qfpclass(0);
   ;
   return 0;
 }
@@ -53922,12 +57723,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinf_use=yes
+  glibcxx_cv_func_qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinf_use=no
+glibcxx_cv_func_qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -53940,12 +57741,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
 
-    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
+  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
 
-for ac_func in _isinf
+for ac_func in qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54051,15 +57852,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for isnan declaration" >&5
-echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
+echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54085,7 +57883,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isnan(0);
+ _qfpclass(0);
   ;
   return 0;
 }
@@ -54112,12 +57910,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnan_use=yes
+  glibcxx_cv_func__qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnan_use=no
+glibcxx_cv_func__qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -54130,12 +57928,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
 
-  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
+    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
 
-for ac_func in isnan
+for ac_func in _qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54241,12 +58039,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
-echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for hypot declaration" >&5
+echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54265,14 +58066,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isnan(0);
+ hypot(0, 0);
   ;
   return 0;
 }
@@ -54299,12 +58096,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnan_use=yes
+  glibcxx_cv_func_hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnan_use=no
+glibcxx_cv_func_hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -54317,12 +58114,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
 
-    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
 
-for ac_func in _isnan
+for ac_func in hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54428,15 +58225,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for finite declaration" >&5
-echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finite_use+set} != xset; then
-    if test "${glibcxx_cv_func_finite_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
+echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54455,14 +58249,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- finite(0);
+ _hypot(0, 0);
   ;
   return 0;
 }
@@ -54489,12 +58279,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finite_use=yes
+  glibcxx_cv_func__hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finite_use=no
+glibcxx_cv_func__hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -54507,12 +58297,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
 
-  if test x$glibcxx_cv_func_finite_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
 
-for ac_func in finite
+for ac_func in _hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54618,38 +58408,228 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _finite declaration" >&5
-echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finite_use+set} != xset; then
-    if test "${glibcxx_cv_func__finite_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for float trig functions" >&5
+echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
+int
+main ()
+{
+ `for x in acosf asinf atanf \
+                                          cosf sinf tanf \
+                                          coshf sinhf tanhf; do echo "$x (0);"; done`
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_float_trig_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_float_trig_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
+  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
+
+
+
+
+
+
+
+
+
+for ac_func in acosf asinf atanf \
+                                          cosf sinf tanf \
+                                          coshf sinhf tanhf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
- _finite(0);
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  fi
+
+
+  echo "$as_me:$LINENO: checking for float round functions" >&5
+echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+    ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ `for x in ceilf floorf; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -54676,30 +58656,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finite_use=yes
+  glibcxx_cv_func_float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finite_use=no
+glibcxx_cv_func_float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
+  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__finite_use = x"yes"; then
 
-for ac_func in _finite
+for ac_func in ceilf floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54805,15 +58783,14 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for copysign declaration" >&5
-echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for expf declaration" >&5
+echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expf_use+set} != xset; then
+    if test "${glibcxx_cv_func_expf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54832,10 +58809,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- copysign(0, 0);
+ expf(0);
   ;
   return 0;
 }
@@ -54862,12 +58843,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysign_use=yes
+  glibcxx_cv_func_expf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysign_use=no
+glibcxx_cv_func_expf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -54880,12 +58861,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
 
-  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
+  if test x$glibcxx_cv_func_expf_use = x"yes"; then
 
-for ac_func in copysign
+for ac_func in expf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54993,10 +58974,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
-echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expf declaration" >&5
+echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expf_use+set} != xset; then
+    if test "${glibcxx_cv_func__expf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55015,10 +58996,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _copysign(0, 0);
+ _expf(0);
   ;
   return 0;
 }
@@ -55045,12 +59030,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysign_use=yes
+  glibcxx_cv_func__expf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysign_use=no
+glibcxx_cv_func__expf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55063,12 +59048,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
 
-    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
+    if test x$glibcxx_cv_func__expf_use = x"yes"; then
 
-for ac_func in _copysign
+for ac_func in _expf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55179,10 +59164,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincos declaration" >&5
-echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
+echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55201,10 +59186,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- sincos(0, 0, 0);
+ isnanf(0);
   ;
   return 0;
 }
@@ -55231,12 +59220,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincos_use=yes
+  glibcxx_cv_func_isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincos_use=no
+glibcxx_cv_func_isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55249,12 +59238,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
 
-  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
 
-for ac_func in sincos
+for ac_func in isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55362,10 +59351,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
-echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
+echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55384,10 +59373,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _sincos(0, 0, 0);
+ _isnanf(0);
   ;
   return 0;
 }
@@ -55414,12 +59407,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincos_use=yes
+  glibcxx_cv_func__isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincos_use=no
+glibcxx_cv_func__isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55432,12 +59425,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
 
-    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
 
-for ac_func in _sincos
+for ac_func in _isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55548,10 +59541,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
-echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinff declaration" >&5
+echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55577,7 +59570,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fpclass(0);
+ isinff(0);
   ;
   return 0;
 }
@@ -55604,12 +59597,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fpclass_use=yes
+  glibcxx_cv_func_isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fpclass_use=no
+glibcxx_cv_func_isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55622,12 +59615,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
 
-  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
 
-for ac_func in fpclass
+for ac_func in isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55735,10 +59728,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
-echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
+echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55764,7 +59757,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fpclass(0);
+ _isinff(0);
   ;
   return 0;
 }
@@ -55791,12 +59784,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fpclass_use=yes
+  glibcxx_cv_func__isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fpclass_use=no
+glibcxx_cv_func__isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55809,12 +59802,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
 
-    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
 
-for ac_func in _fpclass
+for ac_func in _isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55925,10 +59918,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
-echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
+echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55947,14 +59940,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- qfpclass(0);
+ atan2f(0, 0);
   ;
   return 0;
 }
@@ -55981,12 +59970,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_qfpclass_use=yes
+  glibcxx_cv_func_atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_qfpclass_use=no
+glibcxx_cv_func_atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55999,12 +59988,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
 
-  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
 
-for ac_func in qfpclass
+for ac_func in atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56112,10 +60101,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
-echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
+echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -56134,14 +60123,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _qfpclass(0);
+ _atan2f(0, 0);
   ;
   return 0;
 }
@@ -56168,12 +60153,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__qfpclass_use=yes
+  glibcxx_cv_func__atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__qfpclass_use=no
+glibcxx_cv_func__atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -56186,12 +60171,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
 
-    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
 
-for ac_func in _qfpclass
+for ac_func in _atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56302,10 +60287,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypot declaration" >&5
-echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
+echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -56324,10 +60309,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- hypot(0, 0);
+ fabsf(0);
   ;
   return 0;
 }
@@ -56354,12 +60343,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypot_use=yes
+  glibcxx_cv_func_fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypot_use=no
+glibcxx_cv_func_fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -56372,12 +60361,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
 
-  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
 
-for ac_func in hypot
+for ac_func in fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56485,10 +60474,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
-echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
+echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -56507,10 +60496,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _hypot(0, 0);
+ _fabsf(0);
   ;
   return 0;
 }
@@ -56537,12 +60530,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypot_use=yes
+  glibcxx_cv_func__fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypot_use=no
+glibcxx_cv_func__fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -56555,12 +60548,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
 
-    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
 
-for ac_func in _hypot
+for ac_func in _fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56671,21 +60664,22 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for float trig functions" >&5
-echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
+echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -56695,9 +60689,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in acosf asinf atanf \
-                                          cosf sinf tanf \
-                                          coshf sinhf tanhf; do echo "$x (0);"; done`
+ fmodf(0, 0);
   ;
   return 0;
 }
@@ -56724,37 +60716,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_trig_use=yes
+  glibcxx_cv_func_fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_trig_use=no
+glibcxx_cv_func_fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
-  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
 
+  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
 
-for ac_func in acosf asinf atanf \
-                                          cosf sinf tanf \
-                                          coshf sinhf tanhf
+for ac_func in fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56860,24 +60845,24 @@ _ACEOF
 fi
 done
 
-  fi
-
+  else
 
-  echo "$as_me:$LINENO: checking for float round functions" >&5
-echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
+echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -56887,7 +60872,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in ceilf floorf; do echo "$x (0);"; done`
+ _fmodf(0, 0);
   ;
   return 0;
 }
@@ -56914,28 +60899,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_round_use=yes
+  glibcxx_cv_func__fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_round_use=no
+glibcxx_cv_func__fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
-  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
 
+    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
 
-for ac_func in ceilf floorf
+for ac_func in _fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57041,14 +61028,15 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for expf declaration" >&5
-echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expf_use+set} != xset; then
-    if test "${glibcxx_cv_func_expf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
+echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57067,14 +61055,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- expf(0);
+ frexpf(0, 0);
   ;
   return 0;
 }
@@ -57101,12 +61085,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expf_use=yes
+  glibcxx_cv_func_frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expf_use=no
+glibcxx_cv_func_frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57119,12 +61103,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
 
-  if test x$glibcxx_cv_func_expf_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
 
-for ac_func in expf
+for ac_func in frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57232,10 +61216,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expf declaration" >&5
-echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expf_use+set} != xset; then
-    if test "${glibcxx_cv_func__expf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
+echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57254,14 +61238,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _expf(0);
+ _frexpf(0, 0);
   ;
   return 0;
 }
@@ -57288,12 +61268,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expf_use=yes
+  glibcxx_cv_func__frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expf_use=no
+glibcxx_cv_func__frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57306,12 +61286,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
 
-    if test x$glibcxx_cv_func__expf_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
 
-for ac_func in _expf
+for ac_func in _frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57422,10 +61402,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
-echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
+echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57444,14 +61424,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- isnanf(0);
+ hypotf(0, 0);
   ;
   return 0;
 }
@@ -57478,12 +61454,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanf_use=yes
+  glibcxx_cv_func_hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanf_use=no
+glibcxx_cv_func_hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57496,12 +61472,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
 
-  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
 
-for ac_func in isnanf
+for ac_func in hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57609,10 +61585,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
-echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
+echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57631,14 +61607,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isnanf(0);
+ _hypotf(0, 0);
   ;
   return 0;
 }
@@ -57665,12 +61637,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanf_use=yes
+  glibcxx_cv_func__hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanf_use=no
+glibcxx_cv_func__hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57683,12 +61655,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
 
-    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
 
-for ac_func in _isnanf
+for ac_func in _hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57799,10 +61771,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinff declaration" >&5
-echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
+echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57821,14 +61793,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- isinff(0);
+ ldexpf(0, 0);
   ;
   return 0;
 }
@@ -57855,12 +61823,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinff_use=yes
+  glibcxx_cv_func_ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinff_use=no
+glibcxx_cv_func_ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57873,12 +61841,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
 
-  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
 
-for ac_func in isinff
+for ac_func in ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57986,10 +61954,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
-echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
+echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58008,14 +61976,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isinff(0);
+ _ldexpf(0, 0);
   ;
   return 0;
 }
@@ -58042,12 +62006,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinff_use=yes
+  glibcxx_cv_func__ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinff_use=no
+glibcxx_cv_func__ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58060,12 +62024,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
 
-    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
 
-for ac_func in _isinff
+for ac_func in _ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58176,10 +62140,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
-echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logf declaration" >&5
+echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logf_use+set} != xset; then
+    if test "${glibcxx_cv_func_logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58198,10 +62162,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- atan2f(0, 0);
+ logf(0);
   ;
   return 0;
 }
@@ -58228,12 +62196,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2f_use=yes
+  glibcxx_cv_func_logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2f_use=no
+glibcxx_cv_func_logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58246,12 +62214,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
 
-  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
+  if test x$glibcxx_cv_func_logf_use = x"yes"; then
 
-for ac_func in atan2f
+for ac_func in logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58359,10 +62327,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
-echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logf declaration" >&5
+echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logf_use+set} != xset; then
+    if test "${glibcxx_cv_func__logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58381,10 +62349,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _atan2f(0, 0);
+ _logf(0);
   ;
   return 0;
 }
@@ -58411,12 +62383,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2f_use=yes
+  glibcxx_cv_func__logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2f_use=no
+glibcxx_cv_func__logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58429,12 +62401,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
 
-    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
+    if test x$glibcxx_cv_func__logf_use = x"yes"; then
 
-for ac_func in _atan2f
+for ac_func in _logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58545,10 +62517,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
-echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10f declaration" >&5
+echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58574,7 +62546,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fabsf(0);
+ log10f(0);
   ;
   return 0;
 }
@@ -58601,12 +62573,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsf_use=yes
+  glibcxx_cv_func_log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsf_use=no
+glibcxx_cv_func_log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58619,12 +62591,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
 
-  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
 
-for ac_func in fabsf
+for ac_func in log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58732,10 +62704,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
-echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
+echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58761,7 +62733,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fabsf(0);
+ _log10f(0);
   ;
   return 0;
 }
@@ -58788,12 +62760,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsf_use=yes
+  glibcxx_cv_func__log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsf_use=no
+glibcxx_cv_func__log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58806,12 +62778,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
 
-    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
 
-for ac_func in _fabsf
+for ac_func in _log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58922,10 +62894,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
-echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modff declaration" >&5
+echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modff_use+set} != xset; then
+    if test "${glibcxx_cv_func_modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58947,7 +62919,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fmodf(0, 0);
+ modff(0, 0);
   ;
   return 0;
 }
@@ -58974,12 +62946,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodf_use=yes
+  glibcxx_cv_func_modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodf_use=no
+glibcxx_cv_func_modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58992,12 +62964,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
 
-  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
+  if test x$glibcxx_cv_func_modff_use = x"yes"; then
 
-for ac_func in fmodf
+for ac_func in modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59105,10 +63077,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
-echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modff declaration" >&5
+echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modff_use+set} != xset; then
+    if test "${glibcxx_cv_func__modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59130,7 +63102,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fmodf(0, 0);
+ _modff(0, 0);
   ;
   return 0;
 }
@@ -59157,12 +63129,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodf_use=yes
+  glibcxx_cv_func__modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodf_use=no
+glibcxx_cv_func__modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59175,12 +63147,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
 
-    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
+    if test x$glibcxx_cv_func__modff_use = x"yes"; then
 
-for ac_func in _fmodf
+for ac_func in _modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59291,10 +63263,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
-echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powf declaration" >&5
+echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powf_use+set} != xset; then
+    if test "${glibcxx_cv_func_powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59316,7 +63288,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- frexpf(0, 0);
+ powf(0, 0);
   ;
   return 0;
 }
@@ -59343,12 +63315,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpf_use=yes
+  glibcxx_cv_func_powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpf_use=no
+glibcxx_cv_func_powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59361,12 +63333,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
 
-  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_powf_use = x"yes"; then
 
-for ac_func in frexpf
+for ac_func in powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59474,10 +63446,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
-echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powf declaration" >&5
+echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powf_use+set} != xset; then
+    if test "${glibcxx_cv_func__powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59499,7 +63471,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _frexpf(0, 0);
+ _powf(0, 0);
   ;
   return 0;
 }
@@ -59526,12 +63498,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpf_use=yes
+  glibcxx_cv_func__powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpf_use=no
+glibcxx_cv_func__powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59544,12 +63516,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
 
-    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__powf_use = x"yes"; then
 
-for ac_func in _frexpf
+for ac_func in _powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59660,10 +63632,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
-echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
+echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59682,10 +63654,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- hypotf(0, 0);
+ sqrtf(0);
   ;
   return 0;
 }
@@ -59712,12 +63688,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotf_use=yes
+  glibcxx_cv_func_sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotf_use=no
+glibcxx_cv_func_sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59730,12 +63706,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
 
-  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
 
-for ac_func in hypotf
+for ac_func in sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59843,10 +63819,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
-echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
+echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59865,10 +63841,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _hypotf(0, 0);
+ _sqrtf(0);
   ;
   return 0;
 }
@@ -59895,12 +63875,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotf_use=yes
+  glibcxx_cv_func__sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotf_use=no
+glibcxx_cv_func__sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59913,12 +63893,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
 
-    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
 
-for ac_func in _hypotf
+for ac_func in _sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60029,10 +64009,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
-echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
+echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -60054,7 +64034,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- ldexpf(0, 0);
+ sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -60081,12 +64061,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpf_use=yes
+  glibcxx_cv_func_sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpf_use=no
+glibcxx_cv_func_sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -60099,12 +64079,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
 
-for ac_func in ldexpf
+for ac_func in sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60212,10 +64192,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
-echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
+echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -60237,7 +64217,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _ldexpf(0, 0);
+ _sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -60264,12 +64244,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpf_use=yes
+  glibcxx_cv_func__sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpf_use=no
+glibcxx_cv_func__sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -60282,12 +64262,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
 
-for ac_func in _ldexpf
+for ac_func in _sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60398,10 +64378,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logf declaration" >&5
-echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logf_use+set} != xset; then
-    if test "${glibcxx_cv_func_logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finitef declaration" >&5
+echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -60427,7 +64407,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- logf(0);
+ finitef(0);
   ;
   return 0;
 }
@@ -60454,12 +64434,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logf_use=yes
+  glibcxx_cv_func_finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logf_use=no
+glibcxx_cv_func_finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -60472,12 +64452,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
 
-  if test x$glibcxx_cv_func_logf_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
 
-for ac_func in logf
+for ac_func in finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60585,10 +64565,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logf declaration" >&5
-echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logf_use+set} != xset; then
-    if test "${glibcxx_cv_func__logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
+echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -60614,7 +64594,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _logf(0);
+ _finitef(0);
   ;
   return 0;
 }
@@ -60641,12 +64621,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logf_use=yes
+  glibcxx_cv_func__finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logf_use=no
+glibcxx_cv_func__finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -60659,12 +64639,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
 
-    if test x$glibcxx_cv_func__logf_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
 
-for ac_func in _logf
+for ac_func in _finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60775,36 +64755,33 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10f declaration" >&5
-echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for long double trig functions" >&5
+echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- log10f(0);
+ `for x in acosl asinl atanl \
+                                          cosl sinl tanl \
+                                          coshl sinhl tanhl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -60831,30 +64808,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10f_use=yes
+  glibcxx_cv_func_long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10f_use=no
+glibcxx_cv_func_long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
+  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
 
-for ac_func in log10f
+
+
+
+
+
+
+
+for ac_func in acosl asinl atanl \
+                                          cosl sinl tanl \
+                                          coshl sinhl tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60960,38 +64944,34 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
-echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for long double round functions" >&5
+echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _log10f(0);
+ `for x in ceill floorl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -61018,30 +64998,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10f_use=yes
+  glibcxx_cv_func_long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10f_use=no
+glibcxx_cv_func_long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
+  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
 
-for ac_func in _log10f
+for ac_func in ceill floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61147,15 +65125,14 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for modff declaration" >&5
-echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modff_use+set} != xset; then
-    if test "${glibcxx_cv_func_modff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
+echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -61174,10 +65151,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- modff(0, 0);
+ isnanl(0);
   ;
   return 0;
 }
@@ -61204,12 +65185,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modff_use=yes
+  glibcxx_cv_func_isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modff_use=no
+glibcxx_cv_func_isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -61222,12 +65203,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
 
-  if test x$glibcxx_cv_func_modff_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
 
-for ac_func in modff
+for ac_func in isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61335,10 +65316,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modff declaration" >&5
-echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modff_use+set} != xset; then
-    if test "${glibcxx_cv_func__modff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
+echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -61357,10 +65338,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _modff(0, 0);
+ _isnanl(0);
   ;
   return 0;
 }
@@ -61387,12 +65372,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modff_use=yes
+  glibcxx_cv_func__isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modff_use=no
+glibcxx_cv_func__isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -61405,12 +65390,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
 
-    if test x$glibcxx_cv_func__modff_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
 
-for ac_func in _modff
+for ac_func in _isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61521,10 +65506,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powf declaration" >&5
-echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powf_use+set} != xset; then
-    if test "${glibcxx_cv_func_powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
+echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -61543,10 +65528,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- powf(0, 0);
+ isinfl(0);
   ;
   return 0;
 }
@@ -61573,12 +65562,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powf_use=yes
+  glibcxx_cv_func_isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powf_use=no
+glibcxx_cv_func_isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -61591,12 +65580,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
 
-  if test x$glibcxx_cv_func_powf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
 
-for ac_func in powf
+for ac_func in isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61704,10 +65693,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _powf declaration" >&5
-echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powf_use+set} != xset; then
-    if test "${glibcxx_cv_func__powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
+echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -61726,10 +65715,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _powf(0, 0);
+ _isinfl(0);
   ;
   return 0;
 }
@@ -61756,12 +65749,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powf_use=yes
+  glibcxx_cv_func__isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powf_use=no
+glibcxx_cv_func__isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -61774,12 +65767,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
 
-    if test x$glibcxx_cv_func__powf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
 
-for ac_func in _powf
+for ac_func in _isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61890,10 +65883,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
-echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
+echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
+    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -61912,14 +65905,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- sqrtf(0);
+ copysignl(0, 0);
   ;
   return 0;
 }
@@ -61946,12 +65935,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtf_use=yes
+  glibcxx_cv_func_copysignl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtf_use=no
+glibcxx_cv_func_copysignl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -61964,12 +65953,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
 
-  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
+  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
 
-for ac_func in sqrtf
+for ac_func in copysignl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62077,10 +66066,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
-echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
+echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
+    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62099,14 +66088,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _sqrtf(0);
+ _copysignl(0, 0);
   ;
   return 0;
 }
@@ -62133,12 +66118,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtf_use=yes
+  glibcxx_cv_func__copysignl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtf_use=no
+glibcxx_cv_func__copysignl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62151,12 +66136,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
 
-    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
+    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
 
-for ac_func in _sqrtf
+for ac_func in _copysignl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62267,10 +66252,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
-echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
+echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62292,7 +66277,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincosf(0, 0, 0);
+ atan2l(0, 0);
   ;
   return 0;
 }
@@ -62319,12 +66304,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosf_use=yes
+  glibcxx_cv_func_atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosf_use=no
+glibcxx_cv_func_atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62337,12 +66322,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
 
-  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
 
-for ac_func in sincosf
+for ac_func in atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62450,10 +66435,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
-echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
+echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62475,7 +66460,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosf(0, 0, 0);
+ _atan2l(0, 0);
   ;
   return 0;
 }
@@ -62502,12 +66487,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosf_use=yes
+  glibcxx_cv_func__atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosf_use=no
+glibcxx_cv_func__atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62520,12 +66505,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
 
-    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
+    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
 
-for ac_func in _sincosf
+for ac_func in _atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62636,10 +66621,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for finitef declaration" >&5
-echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for expl declaration" >&5
+echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expl_use+set} != xset; then
+    if test "${glibcxx_cv_func_expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62665,7 +66650,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- finitef(0);
+ expl(0);
   ;
   return 0;
 }
@@ -62692,12 +66677,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitef_use=yes
+  glibcxx_cv_func_expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitef_use=no
+glibcxx_cv_func_expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62710,12 +66695,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
 
-  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
+  if test x$glibcxx_cv_func_expl_use = x"yes"; then
 
-for ac_func in finitef
+for ac_func in expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62823,10 +66808,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
-echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expl declaration" >&5
+echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expl_use+set} != xset; then
+    if test "${glibcxx_cv_func__expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62852,7 +66837,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _finitef(0);
+ _expl(0);
   ;
   return 0;
 }
@@ -62879,12 +66864,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitef_use=yes
+  glibcxx_cv_func__expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitef_use=no
+glibcxx_cv_func__expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62897,12 +66882,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
 
-    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
+    if test x$glibcxx_cv_func__expl_use = x"yes"; then
 
-for ac_func in _finitef
+for ac_func in _expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63013,33 +66998,36 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for long double trig functions" >&5
-echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
+echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- `for x in acosl asinl atanl \
-                                          cosl sinl tanl \
-                                          coshl sinhl tanhl; do echo "$x (0);"; done`
+ fabsl(0);
   ;
   return 0;
 }
@@ -63066,37 +67054,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_trig_use=yes
+  glibcxx_cv_func_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_trig_use=no
+glibcxx_cv_func_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
-  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
 
+  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
 
-for ac_func in acosl asinl atanl \
-                                          cosl sinl tanl \
-                                          coshl sinhl tanhl
+for ac_func in fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63202,34 +67183,38 @@ _ACEOF
 fi
 done
 
-  fi
-
+  else
 
-  echo "$as_me:$LINENO: checking for long double round functions" >&5
-echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
+echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- `for x in ceill floorl; do echo "$x (0);"; done`
+ _fabsl(0);
   ;
   return 0;
 }
@@ -63256,28 +67241,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_round_use=yes
+  glibcxx_cv_func__fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_round_use=no
+glibcxx_cv_func__fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
-  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
 
+    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
 
-for ac_func in ceill floorl
+for ac_func in _fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63383,14 +67370,15 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
-echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
+echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -63409,14 +67397,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- isnanl(0);
+ fmodl(0, 0);
   ;
   return 0;
 }
@@ -63443,12 +67427,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanl_use=yes
+  glibcxx_cv_func_fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanl_use=no
+glibcxx_cv_func_fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -63461,12 +67445,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
 
-  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
 
-for ac_func in isnanl
+for ac_func in fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63574,10 +67558,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
-echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
+echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -63596,14 +67580,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isnanl(0);
+ _fmodl(0, 0);
   ;
   return 0;
 }
@@ -63630,12 +67610,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanl_use=yes
+  glibcxx_cv_func__fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanl_use=no
+glibcxx_cv_func__fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -63648,12 +67628,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
 
-    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
 
-for ac_func in _isnanl
+for ac_func in _fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63764,10 +67744,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
-echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
+echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -63786,14 +67766,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- isinfl(0);
+ frexpl(0, 0);
   ;
   return 0;
 }
@@ -63820,12 +67796,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinfl_use=yes
+  glibcxx_cv_func_frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinfl_use=no
+glibcxx_cv_func_frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -63838,12 +67814,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
 
-  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
 
-for ac_func in isinfl
+for ac_func in frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63951,10 +67927,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
-echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
+echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -63973,14 +67949,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _isinfl(0);
+ _frexpl(0, 0);
   ;
   return 0;
 }
@@ -64007,12 +67979,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinfl_use=yes
+  glibcxx_cv_func__frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinfl_use=no
+glibcxx_cv_func__frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64025,12 +67997,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
 
-    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
 
-for ac_func in _isinfl
+for ac_func in _frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64141,10 +68113,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
-echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
+echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -64166,7 +68138,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- copysignl(0, 0);
+ hypotl(0, 0);
   ;
   return 0;
 }
@@ -64193,12 +68165,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysignl_use=yes
+  glibcxx_cv_func_hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysignl_use=no
+glibcxx_cv_func_hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64211,12 +68183,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
 
-  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
 
-for ac_func in copysignl
+for ac_func in hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64324,10 +68296,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
-echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
+echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -64349,7 +68321,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _copysignl(0, 0);
+ _hypotl(0, 0);
   ;
   return 0;
 }
@@ -64376,12 +68348,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysignl_use=yes
+  glibcxx_cv_func__hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysignl_use=no
+glibcxx_cv_func__hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64394,12 +68366,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
 
-    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
 
-for ac_func in _copysignl
+for ac_func in _hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64510,10 +68482,193 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
-echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
+echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ ldexpl(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_ldexpl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_ldexpl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
+
+  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
+
+for ac_func in ldexpl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
+echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -64535,7 +68690,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- atan2l(0, 0);
+ _ldexpl(0, 0);
   ;
   return 0;
 }
@@ -64562,12 +68717,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2l_use=yes
+  glibcxx_cv_func__ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2l_use=no
+glibcxx_cv_func__ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64580,12 +68735,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
 
-  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
 
-for ac_func in atan2l
+for ac_func in _ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64691,12 +68846,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
-echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for logl declaration" >&5
+echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logl_use+set} != xset; then
+    if test "${glibcxx_cv_func_logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -64715,10 +68873,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _atan2l(0, 0);
+ logl(0);
   ;
   return 0;
 }
@@ -64745,12 +68907,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2l_use=yes
+  glibcxx_cv_func_logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2l_use=no
+glibcxx_cv_func_logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64763,12 +68925,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
 
-    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
+  if test x$glibcxx_cv_func_logl_use = x"yes"; then
 
-for ac_func in _atan2l
+for ac_func in logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64874,15 +69036,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for expl declaration" >&5
-echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expl_use+set} != xset; then
-    if test "${glibcxx_cv_func_expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logl declaration" >&5
+echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logl_use+set} != xset; then
+    if test "${glibcxx_cv_func__logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -64908,7 +69067,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- expl(0);
+ _logl(0);
   ;
   return 0;
 }
@@ -64935,12 +69094,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expl_use=yes
+  glibcxx_cv_func__logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expl_use=no
+glibcxx_cv_func__logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64953,12 +69112,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
 
-  if test x$glibcxx_cv_func_expl_use = x"yes"; then
+    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in expl
+for ac_func in _logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65064,12 +69223,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _expl declaration" >&5
-echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expl_use+set} != xset; then
-    if test "${glibcxx_cv_func__expl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for log10l declaration" >&5
+echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65095,7 +69257,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _expl(0);
+ log10l(0);
   ;
   return 0;
 }
@@ -65122,12 +69284,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expl_use=yes
+  glibcxx_cv_func_log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expl_use=no
+glibcxx_cv_func_log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -65140,12 +69302,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
 
-    if test x$glibcxx_cv_func__expl_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in _expl
+for ac_func in log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65251,15 +69413,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
-echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
+echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65285,7 +69444,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fabsl(0);
+ _log10l(0);
   ;
   return 0;
 }
@@ -65312,12 +69471,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsl_use=yes
+  glibcxx_cv_func__log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsl_use=no
+glibcxx_cv_func__log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -65330,12 +69489,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
 
-  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-for ac_func in fabsl
+for ac_func in _log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65441,12 +69600,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
-echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for modfl declaration" >&5
+echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65465,14 +69627,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _fabsl(0);
+ modfl(0, 0);
   ;
   return 0;
 }
@@ -65499,12 +69657,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsl_use=yes
+  glibcxx_cv_func_modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsl_use=no
+glibcxx_cv_func_modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -65517,12 +69675,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
 
-    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
+  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
 
-for ac_func in _fabsl
+for ac_func in modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65628,15 +69786,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
-echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
+echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65658,7 +69813,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fmodl(0, 0);
+ _modfl(0, 0);
   ;
   return 0;
 }
@@ -65685,12 +69840,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodl_use=yes
+  glibcxx_cv_func__modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodl_use=no
+glibcxx_cv_func__modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -65703,12 +69858,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
 
-  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
+    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
 
-for ac_func in fmodl
+for ac_func in _modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65814,12 +69969,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
-echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for powl declaration" >&5
+echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powl_use+set} != xset; then
+    if test "${glibcxx_cv_func_powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65841,7 +69999,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fmodl(0, 0);
+ powl(0, 0);
   ;
   return 0;
 }
@@ -65868,12 +70026,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodl_use=yes
+  glibcxx_cv_func_powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodl_use=no
+glibcxx_cv_func_powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -65886,12 +70044,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
 
-    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
+  if test x$glibcxx_cv_func_powl_use = x"yes"; then
 
-for ac_func in _fmodl
+for ac_func in powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65997,15 +70155,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
-echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powl declaration" >&5
+echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powl_use+set} != xset; then
+    if test "${glibcxx_cv_func__powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66027,7 +70182,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- frexpl(0, 0);
+ _powl(0, 0);
   ;
   return 0;
 }
@@ -66054,12 +70209,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpl_use=yes
+  glibcxx_cv_func__powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpl_use=no
+glibcxx_cv_func__powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66072,12 +70227,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
 
-  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
-for ac_func in frexpl
+for ac_func in _powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -66183,12 +70338,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
-echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
+echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66207,10 +70365,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _frexpl(0, 0);
+ sqrtl(0);
   ;
   return 0;
 }
@@ -66237,12 +70399,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpl_use=yes
+  glibcxx_cv_func_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpl_use=no
+glibcxx_cv_func_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66255,12 +70417,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
 
-    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in _frexpl
+for ac_func in sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -66366,15 +70528,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
-echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
+echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66393,10 +70552,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- hypotl(0, 0);
+ _sqrtl(0);
   ;
   return 0;
 }
@@ -66423,12 +70586,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotl_use=yes
+  glibcxx_cv_func__sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotl_use=no
+glibcxx_cv_func__sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66441,12 +70604,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
 
-  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in hypotl
+for ac_func in _sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -66552,12 +70715,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
-echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
+echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66579,7 +70745,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _hypotl(0, 0);
+ sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -66606,12 +70772,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotl_use=yes
+  glibcxx_cv_func_sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotl_use=no
+glibcxx_cv_func_sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66624,12 +70790,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
 
-    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
 
-for ac_func in _hypotl
+for ac_func in sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -66735,15 +70901,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
-echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
+echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66765,7 +70928,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- ldexpl(0, 0);
+ _sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -66792,12 +70955,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpl_use=yes
+  glibcxx_cv_func__sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpl_use=no
+glibcxx_cv_func__sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66810,12 +70973,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
 
-for ac_func in ldexpl
+for ac_func in _sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -66921,12 +71084,15 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
-echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for finitel declaration" >&5
+echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66945,10 +71111,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+		      #ifdef HAVE_IEEEFP_H
+		      #include <ieeefp.h>
+		      #endif
+
 int
 main ()
 {
- _ldexpl(0, 0);
+ finitel(0);
   ;
   return 0;
 }
@@ -66975,12 +71145,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpl_use=yes
+  glibcxx_cv_func_finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpl_use=no
+glibcxx_cv_func_finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66993,12 +71163,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
 
-for ac_func in _ldexpl
+for ac_func in finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -67104,15 +71274,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for logl declaration" >&5
-echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logl_use+set} != xset; then
-    if test "${glibcxx_cv_func_logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
+echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -67138,7 +71305,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- logl(0);
+ _finitel(0);
   ;
   return 0;
 }
@@ -67165,12 +71332,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logl_use=yes
+  glibcxx_cv_func__finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logl_use=no
+glibcxx_cv_func__finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -67183,12 +71350,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
 
-  if test x$glibcxx_cv_func_logl_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in logl
+for ac_func in _finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -67294,38 +71461,39 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _logl declaration" >&5
-echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logl_use+set} != xset; then
-    if test "${glibcxx_cv_func__logl_use+set}" = set; then
+
+
+
+  echo "$as_me:$LINENO: checking for _float trig functions" >&5
+echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _logl(0);
+ `for x in _acosf _asinf _atanf \
+                                          _cosf _sinf _tanf \
+                                          _coshf _sinhf _tanhf; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -67352,30 +71520,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logl_use=yes
+  glibcxx_cv_func__float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logl_use=no
+glibcxx_cv_func__float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
+  if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in _logl
+
+
+
+
+
+
+
+for ac_func in _acosf _asinf _atanf \
+                                          _cosf _sinf _tanf \
+                                          _coshf _sinhf _tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -67481,41 +71656,34 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
-
-  echo "$as_me:$LINENO: checking for log10l declaration" >&5
-echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _float round functions" >&5
+echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- log10l(0);
+ `for x in _ceilf _floorf; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -67542,30 +71710,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10l_use=yes
+  glibcxx_cv_func__float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10l_use=no
+glibcxx_cv_func__float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
+  if test x$glibcxx_cv_func__float_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in log10l
+for ac_func in _ceilf _floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -67671,38 +71837,37 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
-echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for _long double trig functions" >&5
+echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _log10l(0);
+ `for x in _acosl _asinl _atanl \
+                                          _cosl _sinl _tanl \
+                                          _coshl _sinhl _tanhl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -67729,30 +71894,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10l_use=yes
+  glibcxx_cv_func__long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10l_use=no
+glibcxx_cv_func__long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
+  if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-for ac_func in _log10l
+
+
+
+
+
+
+
+for ac_func in _acosl _asinl _atanl \
+                                          _cosl _sinl _tanl \
+                                          _coshl _sinhl _tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -67858,27 +72030,24 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
-
-  echo "$as_me:$LINENO: checking for modfl declaration" >&5
-echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _long double round functions" >&5
+echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -67888,7 +72057,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- modfl(0, 0);
+ `for x in _ceill _floorl; do echo "$x (0);"; done`
   ;
   return 0;
 }
@@ -67915,30 +72084,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modfl_use=yes
+  glibcxx_cv_func__long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modfl_use=no
+glibcxx_cv_func__long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
+  if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
 
-for ac_func in modfl
+for ac_func in _ceill _floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -68044,12 +72211,18 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
-echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
+
+  LIBS="$ac_save_LIBS"
+  CXXFLAGS="$ac_save_CXXFLAGS"
+
+
+
+  echo "$as_me:$LINENO: checking for __builtin_abs declaration" >&5
+echo $ECHO_N "checking for __builtin_abs declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_abs_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_abs_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68071,7 +72244,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _modfl(0, 0);
+ __builtin_abs(0);
   ;
   return 0;
 }
@@ -68098,12 +72271,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modfl_use=yes
+  glibcxx_cv_func___builtin_abs_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modfl_use=no
+glibcxx_cv_func___builtin_abs_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68116,20 +72289,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
-
-    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
-
-for ac_func in _modfl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_use" >&6
+  if test x$glibcxx_cv_func___builtin_abs_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_abs linkage" >&5
+echo $ECHO_N "checking for __builtin_abs linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_abs_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_abs_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -68140,47 +72310,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_abs(0);
   ;
   return 0;
 }
@@ -68207,35 +72341,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_abs_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_abs_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
     fi
-  fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_link" >&6
+    if test x$glibcxx_cv_func___builtin_abs_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_abs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for powl declaration" >&5
-echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powl_use+set} != xset; then
-    if test "${glibcxx_cv_func_powl_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for __builtin_fabsf declaration" >&5
+echo $ECHO_N "checking for __builtin_fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68257,7 +72392,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- powl(0, 0);
+ __builtin_fabsf(0);
   ;
   return 0;
 }
@@ -68284,12 +72419,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powl_use=yes
+  glibcxx_cv_func___builtin_fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powl_use=no
+glibcxx_cv_func___builtin_fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68302,20 +72437,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
-
-  if test x$glibcxx_cv_func_powl_use = x"yes"; then
-
-for ac_func in powl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_use" >&6
+  if test x$glibcxx_cv_func___builtin_fabsf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_fabsf linkage" >&5
+echo $ECHO_N "checking for __builtin_fabsf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_fabsf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_fabsf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -68326,47 +72458,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_fabsf(0);
   ;
   return 0;
 }
@@ -68393,32 +72489,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_fabsf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_fabsf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
-  else
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_link" >&6
+    if test x$glibcxx_cv_func___builtin_fabsf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_fabsf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
-  echo "$as_me:$LINENO: checking for _powl declaration" >&5
-echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powl_use+set} != xset; then
-    if test "${glibcxx_cv_func__powl_use+set}" = set; then
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
+
+    fi
+  fi
+
+
+  echo "$as_me:$LINENO: checking for __builtin_fabs declaration" >&5
+echo $ECHO_N "checking for __builtin_fabs declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_fabs_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_fabs_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68440,7 +72540,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _powl(0, 0);
+ __builtin_fabs(0);
   ;
   return 0;
 }
@@ -68467,12 +72567,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powl_use=yes
+  glibcxx_cv_func___builtin_fabs_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powl_use=no
+glibcxx_cv_func___builtin_fabs_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68485,20 +72585,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
-
-    if test x$glibcxx_cv_func__powl_use = x"yes"; then
-
-for ac_func in _powl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_use" >&6
+  if test x$glibcxx_cv_func___builtin_fabs_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_fabs linkage" >&5
+echo $ECHO_N "checking for __builtin_fabs linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_fabs_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_fabs_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -68509,47 +72606,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_fabs(0);
   ;
   return 0;
 }
@@ -68576,35 +72637,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_fabs_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_fabs_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
     fi
-  fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_link" >&6
+    if test x$glibcxx_cv_func___builtin_fabs_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_fabs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
-  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
-echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_fabsl declaration" >&5
+echo $ECHO_N "checking for __builtin_fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68623,14 +72685,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- sqrtl(0);
+ __builtin_fabsl(0);
   ;
   return 0;
 }
@@ -68657,12 +72715,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtl_use=yes
+  glibcxx_cv_func___builtin_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtl_use=no
+glibcxx_cv_func___builtin_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68675,20 +72733,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
-
-  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
-
-for ac_func in sqrtl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_use" >&6
+  if test x$glibcxx_cv_func___builtin_fabsl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_fabsl linkage" >&5
+echo $ECHO_N "checking for __builtin_fabsl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_fabsl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_fabsl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -68699,47 +72754,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_fabsl(0);
   ;
   return 0;
 }
@@ -68766,32 +72785,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_fabsl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_fabsl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_link" >&6
+    if test x$glibcxx_cv_func___builtin_fabsl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_fabsl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
 _ACEOF
 
-fi
-done
+    fi
+  fi
 
-  else
 
-  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
-echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_labs declaration" >&5
+echo $ECHO_N "checking for __builtin_labs declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_labs_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_labs_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68810,14 +72833,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _sqrtl(0);
+ __builtin_labs(0);
   ;
   return 0;
 }
@@ -68844,12 +72863,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtl_use=yes
+  glibcxx_cv_func___builtin_labs_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtl_use=no
+glibcxx_cv_func___builtin_labs_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68862,20 +72881,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
-
-    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
-
-for ac_func in _sqrtl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_use" >&6
+  if test x$glibcxx_cv_func___builtin_labs_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_labs linkage" >&5
+echo $ECHO_N "checking for __builtin_labs linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_labs_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_labs_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -68886,47 +72902,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_labs(0);
   ;
   return 0;
 }
@@ -68953,35 +72933,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_labs_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_labs_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
+
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_link" >&6
+    if test x$glibcxx_cv_func___builtin_labs_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_labs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
     fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
-echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sqrtf declaration" >&5
+echo $ECHO_N "checking for __builtin_sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -69003,7 +72985,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincosl(0, 0, 0);
+ __builtin_sqrtf(0);
   ;
   return 0;
 }
@@ -69030,12 +73012,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosl_use=yes
+  glibcxx_cv_func___builtin_sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosl_use=no
+glibcxx_cv_func___builtin_sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69048,20 +73030,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
-
-  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
-
-for ac_func in sincosl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_use" >&6
+  if test x$glibcxx_cv_func___builtin_sqrtf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sqrtf linkage" >&5
+echo $ECHO_N "checking for __builtin_sqrtf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sqrtf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sqrtf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -69072,47 +73051,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sqrtf(0);
   ;
   return 0;
 }
@@ -69139,32 +73082,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sqrtf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sqrtf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_link" >&6
+    if test x$glibcxx_cv_func___builtin_sqrtf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sqrtf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
 _ACEOF
 
-fi
-done
+    fi
+  fi
 
-  else
 
-  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
-echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sqrt declaration" >&5
+echo $ECHO_N "checking for __builtin_sqrt declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sqrt_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sqrt_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -69186,7 +73133,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosl(0, 0, 0);
+ __builtin_sqrt(0);
   ;
   return 0;
 }
@@ -69213,12 +73160,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosl_use=yes
+  glibcxx_cv_func___builtin_sqrt_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosl_use=no
+glibcxx_cv_func___builtin_sqrt_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69231,20 +73178,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
-
-    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
-
-for ac_func in _sincosl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_use" >&6
+  if test x$glibcxx_cv_func___builtin_sqrt_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sqrt linkage" >&5
+echo $ECHO_N "checking for __builtin_sqrt linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sqrt_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sqrt_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -69255,47 +73199,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sqrt(0);
   ;
   return 0;
 }
@@ -69322,35 +73230,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sqrt_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sqrt_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
     fi
-  fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_link" >&6
+    if test x$glibcxx_cv_func___builtin_sqrt_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sqrt | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
-  echo "$as_me:$LINENO: checking for finitel declaration" >&5
-echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sqrtl declaration" >&5
+echo $ECHO_N "checking for __builtin_sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -69367,16 +73276,12 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
+/* end confdefs.h.  */
+#include <math.h>
 int
 main ()
 {
- finitel(0);
+ __builtin_sqrtl(0);
   ;
   return 0;
 }
@@ -69403,12 +73308,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitel_use=yes
+  glibcxx_cv_func___builtin_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitel_use=no
+glibcxx_cv_func___builtin_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69421,20 +73326,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
-
-  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
-
-for ac_func in finitel
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_use" >&6
+  if test x$glibcxx_cv_func___builtin_sqrtl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sqrtl linkage" >&5
+echo $ECHO_N "checking for __builtin_sqrtl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sqrtl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sqrtl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -69445,47 +73347,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sqrtl(0);
   ;
   return 0;
 }
@@ -69512,32 +73378,37 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sqrtl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sqrtl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_link" >&6
+    if test x$glibcxx_cv_func___builtin_sqrtl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sqrtl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
 _ACEOF
 
-fi
-done
+    fi
+  fi
 
-  else
 
-  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
-echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for __builtin_sinf declaration" >&5
+echo $ECHO_N "checking for __builtin_sinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sinf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -69556,14 +73427,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-		      #ifdef HAVE_IEEEFP_H
-		      #include <ieeefp.h>
-		      #endif
-
 int
 main ()
 {
- _finitel(0);
+ __builtin_sinf(0);
   ;
   return 0;
 }
@@ -69590,12 +73457,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitel_use=yes
+  glibcxx_cv_func___builtin_sinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitel_use=no
+glibcxx_cv_func___builtin_sinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69608,20 +73475,17 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
-
-    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
-
-for ac_func in _finitel
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_use" >&6
+  if test x$glibcxx_cv_func___builtin_sinf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sinf linkage" >&5
+echo $ECHO_N "checking for __builtin_sinf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sinf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sinf_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -69632,47 +73496,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sinf(0);
   ;
   return 0;
 }
@@ -69699,47 +73527,48 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sinf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sinf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
     fi
-  fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_link" >&6
+    if test x$glibcxx_cv_func___builtin_sinf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sinf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
-  echo "$as_me:$LINENO: checking for _float trig functions" >&5
-echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sin declaration" >&5
+echo $ECHO_N "checking for __builtin_sin declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sin_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sin_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -69749,9 +73578,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _acosf _asinf _atanf \
-                                          _cosf _sinf _tanf \
-                                          _coshf _sinhf _tanhf; do echo "$x (0);"; done`
+ __builtin_sin(0);
   ;
   return 0;
 }
@@ -69778,45 +73605,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_trig_use=yes
+  glibcxx_cv_func___builtin_sin_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_trig_use=no
+glibcxx_cv_func___builtin_sin_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
-  if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
-
-
-
-
-
-
-
 
+fi
 
-for ac_func in _acosf _asinf _atanf \
-                                          _cosf _sinf _tanf \
-                                          _coshf _sinhf _tanhf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_use" >&6
+  if test x$glibcxx_cv_func___builtin_sin_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sin linkage" >&5
+echo $ECHO_N "checking for __builtin_sin linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sin_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sin_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -69827,47 +73644,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sin(0);
   ;
   return 0;
 }
@@ -69894,44 +73675,48 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sin_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sin_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_link" >&6
+    if test x$glibcxx_cv_func___builtin_sin_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sin | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
+
+    fi
   fi
 
 
-  echo "$as_me:$LINENO: checking for _float round functions" >&5
-echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__float_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_sinl declaration" >&5
+echo $ECHO_N "checking for __builtin_sinl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_sinl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_sinl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -69941,7 +73726,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _ceilf _floorf; do echo "$x (0);"; done`
+ __builtin_sinl(0);
   ;
   return 0;
 }
@@ -69968,36 +73753,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_round_use=yes
+  glibcxx_cv_func___builtin_sinl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_round_use=no
+glibcxx_cv_func___builtin_sinl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
-  if test x$glibcxx_cv_func__float_round_use = x"yes"; then
 
+fi
 
-for ac_func in _ceilf _floorf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_use" >&6
+  if test x$glibcxx_cv_func___builtin_sinl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_sinl linkage" >&5
+echo $ECHO_N "checking for __builtin_sinl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_sinl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_sinl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -70008,47 +73792,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_sinl(0);
   ;
   return 0;
 }
@@ -70075,45 +73823,49 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_sinl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_sinl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_link" >&6
+    if test x$glibcxx_cv_func___builtin_sinl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_sinl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
+
+    fi
   fi
 
 
 
-  echo "$as_me:$LINENO: checking for _long double trig functions" >&5
-echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_cosf declaration" >&5
+echo $ECHO_N "checking for __builtin_cosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_cosf_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_cosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -70123,9 +73875,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _acosl _asinl _atanl \
-                                          _cosl _sinl _tanl \
-                                          _coshl _sinhl _tanhl; do echo "$x (0);"; done`
+ __builtin_cosf(0);
   ;
   return 0;
 }
@@ -70152,96 +73902,50 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_trig_use=yes
+  glibcxx_cv_func___builtin_cosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_trig_use=no
+glibcxx_cv_func___builtin_cosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
-  if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
-
-
-
-
-
-
-
-
-
-for ac_func in _acosl _asinl _atanl \
-                                          _cosl _sinl _tanl \
-                                          _coshl _sinhl _tanhl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_use" >&6
+  if test x$glibcxx_cv_func___builtin_cosf_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_cosf linkage" >&5
+echo $ECHO_N "checking for __builtin_cosf linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_cosf_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_cosf_link+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
+        if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_cosf(0);
   ;
   return 0;
 }
@@ -70268,44 +73972,48 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_cosf_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_cosf_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_link" >&6
+    if test x$glibcxx_cv_func___builtin_cosf_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_cosf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
+
+    fi
   fi
 
 
-  echo "$as_me:$LINENO: checking for _long double round functions" >&5
-echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_cos declaration" >&5
+echo $ECHO_N "checking for __builtin_cos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_cos_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_cos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -70315,7 +74023,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- `for x in _ceill _floorl; do echo "$x (0);"; done`
+ __builtin_cos(0);
   ;
   return 0;
 }
@@ -70342,36 +74050,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_round_use=yes
+  glibcxx_cv_func___builtin_cos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_round_use=no
+glibcxx_cv_func___builtin_cos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
-  if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
 
+fi
 
-for ac_func in _ceill _floorl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_use" >&6
+  if test x$glibcxx_cv_func___builtin_cos_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_cos linkage" >&5
+echo $ECHO_N "checking for __builtin_cos linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_cos_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_cos_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+        if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -70382,47 +74089,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ __builtin_cos(0);
   ;
   return 0;
 }
@@ -70449,38 +74120,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func___builtin_cos_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_func___builtin_cos_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
 fi
-done
-
-  fi
 
+    fi
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_link" >&6
+    if test x$glibcxx_cv_func___builtin_cos_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_cos | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
-  LIBS="$ac_save_LIBS"
-  CXXFLAGS="$ac_save_CXXFLAGS"
+cat >>confdefs.h <<_ACEOF
+#define ${ac_tr_func} 1
+_ACEOF
 
+    fi
+  fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_abs declaration" >&5
-echo $ECHO_N "checking for __builtin_abs declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_abs_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_abs_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for __builtin_cosl declaration" >&5
+echo $ECHO_N "checking for __builtin_cosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func___builtin_cosl_use+set} != xset; then
+    if test "${glibcxx_cv_func___builtin_cosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -70502,7 +74171,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_abs(0);
+ __builtin_cosl(0);
   ;
   return 0;
 }
@@ -70529,12 +74198,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_abs_use=yes
+  glibcxx_cv_func___builtin_cosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_abs_use=no
+glibcxx_cv_func___builtin_cosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -70547,13 +74216,13 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_use" >&6
-  if test x$glibcxx_cv_func___builtin_abs_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_abs linkage" >&5
-echo $ECHO_N "checking for __builtin_abs linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_abs_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_abs_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_use" >&6
+  if test x$glibcxx_cv_func___builtin_cosl_use = x"yes"; then
+    echo "$as_me:$LINENO: checking for __builtin_cosl linkage" >&5
+echo $ECHO_N "checking for __builtin_cosl linkage... $ECHO_C" >&6
+    if test x${glibcxx_cv_func___builtin_cosl_link+set} != xset; then
+      if test "${glibcxx_cv_func___builtin_cosl_link+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -70572,7 +74241,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- __builtin_abs(0);
+ __builtin_cosl(0);
   ;
   return 0;
 }
@@ -70599,12 +74268,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_abs_link=yes
+  glibcxx_cv_func___builtin_cosl_link=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_abs_link=no
+glibcxx_cv_func___builtin_cosl_link=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
@@ -70612,10 +74281,10 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_abs_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_abs_link" >&6
-    if test x$glibcxx_cv_func___builtin_abs_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_abs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_link" >&5
+echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_link" >&6
+    if test x$glibcxx_cv_func___builtin_cosl_link = x"yes"; then
+      ac_tr_func=HAVE_`echo __builtin_cosl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
 cat >>confdefs.h <<_ACEOF
 #define ${ac_tr_func} 1
@@ -70625,87 +74294,90 @@ _ACEOF
   fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_fabsf declaration" >&5
-echo $ECHO_N "checking for __builtin_fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_fabsf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+echo "$as_me:$LINENO: checking for main in -lm" >&5
+echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_main+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+
+
 int
 main ()
 {
- __builtin_fabsf(0);
+main ();
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsf_use=yes
+  ac_cv_lib_m_main=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsf_use=no
+ac_cv_lib_m_main=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
+echo "${ECHO_T}$ac_cv_lib_m_main" >&6
+if test $ac_cv_lib_m_main = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
 
+  LIBS="-lm $LIBS"
 
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_use" >&6
-  if test x$glibcxx_cv_func___builtin_fabsf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_fabsf linkage" >&5
-echo $ECHO_N "checking for __builtin_fabsf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_fabsf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_fabsf_link+set}" = set; then
+
+for ac_func in copysignf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -70716,11 +74388,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_fabsf(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -70747,113 +74455,260 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsf_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsf_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
+done
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsf_link" >&6
-    if test x$glibcxx_cv_func___builtin_fabsf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_fabsf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+
+for ac_func in __signbit
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
-    fi
-  fi
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
-  echo "$as_me:$LINENO: checking for __builtin_fabs declaration" >&5
-echo $ECHO_N "checking for __builtin_fabs declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_fabs_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_fabs_use+set}" = set; then
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
+fi
+done
+
+
+
+for ac_func in __signbitf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
 int
 main ()
 {
- __builtin_fabs(0);
+return f != $ac_func;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabs_use=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabs_use=no
+eval "$as_ac_var=no"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
+done
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_use" >&6
-  if test x$glibcxx_cv_func___builtin_fabs_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_fabs linkage" >&5
-echo $ECHO_N "checking for __builtin_fabs linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_fabs_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_fabs_link+set}" = set; then
+
+          if test x$ac_cv_func_copysignl = x"yes"; then
+
+for ac_func in __signbitl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -70864,11 +74719,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_fabs(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -70895,58 +74786,52 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabs_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabs_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabs_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabs_link" >&6
-    if test x$glibcxx_cv_func___builtin_fabs_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_fabs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-    fi
-  fi
-
-
-  echo "$as_me:$LINENO: checking for __builtin_fabsl declaration" >&5
-echo $ECHO_N "checking for __builtin_fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_fabsl_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
+fi
+done
 
+  fi
 
+  # Used in libmath/Makefile.am.
+  if test -n "$LIBMATHOBJS"; then
+    need_libmath=yes
+  fi
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+
+  # Test wchar.h for mbstate_t, which is needed for char_traits and
+  # others even if wchar_t support is not on.
+  echo "$as_me:$LINENO: checking for mbstate_t" >&5
+echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <wchar.h>
 int
 main ()
 {
- __builtin_fabsl(0);
+mbstate_t teststate;
   ;
   return 0;
 }
@@ -70960,7 +74845,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -70973,57 +74858,52 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsl_use=yes
+  have_mbstate_t=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsl_use=no
+have_mbstate_t=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
+echo "${ECHO_T}$have_mbstate_t" >&6
+  if test x"$have_mbstate_t" = xyes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MBSTATE_T 1
+_ACEOF
 
+  fi
 
-fi
+  # Sanity check for existence of ISO C99 headers for extended encoding.
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_use" >&6
-  if test x$glibcxx_cv_func___builtin_fabsl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_fabsl linkage" >&5
-echo $ECHO_N "checking for __builtin_fabsl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_fabsl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_fabsl_link+set}" = set; then
+for ac_header in wchar.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_fabsl(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -71037,67 +74917,141 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_fabsl_link=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_fabsl_link=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+ac_header_compiler=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_fabsl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_fabsl_link" >&6
-    if test x$glibcxx_cv_func___builtin_fabsl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_fabsl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
-
-    fi
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
   fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-  echo "$as_me:$LINENO: checking for __builtin_labs declaration" >&5
-echo $ECHO_N "checking for __builtin_labs declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_labs_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_labs_use+set}" = set; then
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+ ac_has_wchar_h=yes
+else
+  ac_has_wchar_h=no
+fi
 
+done
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+for ac_header in wctype.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_labs(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -71108,7 +75062,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -71121,129 +75075,132 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_labs_use=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_labs_use=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_use" >&6
-  if test x$glibcxx_cv_func___builtin_labs_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_labs linkage" >&5
-echo $ECHO_N "checking for __builtin_labs linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_labs_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_labs_link+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_labs(0);
-  ;
-  return 0;
-}
+#include <$ac_header>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_labs_link=yes
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_labs_link=no
+  ac_header_preproc=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_labs_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_labs_link" >&6
-    if test x$glibcxx_cv_func___builtin_labs_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_labs | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
-
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for __builtin_sqrtf declaration" >&5
-echo $ECHO_N "checking for __builtin_sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sqrtf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+ ac_has_wctype_h=yes
 else
+  ac_has_wctype_h=no
+fi
 
+done
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+  # Only continue checking if the ISO C99 headers exist and support is on.
+  if test x"$ac_has_wchar_h" = xyes &&
+     test x"$ac_has_wctype_h" = xyes &&
+     test x"$enable_c_mbchar" != xno; then
 
-      cat >conftest.$ac_ext <<_ACEOF
+    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
+    # numeric_limits can instantiate type_traits<wchar_t>
+    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
+echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <wchar.h>
 int
 main ()
 {
- __builtin_sqrtf(0);
+int i = WCHAR_MIN; int j = WCHAR_MAX;
   ;
   return 0;
 }
@@ -71257,7 +75214,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -71270,128 +75227,34 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtf_use=yes
+  has_wchar_minmax=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtf_use=no
+has_wchar_minmax=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_use" >&6
-  if test x$glibcxx_cv_func___builtin_sqrtf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sqrtf linkage" >&5
-echo $ECHO_N "checking for __builtin_sqrtf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sqrtf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sqrtf_link+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
+echo "${ECHO_T}$has_wchar_minmax" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    # Test wchar.h for WEOF, which is what we use to determine whether
+    # to specialize for char_traits<wchar_t> or not.
+    echo "$as_me:$LINENO: checking for WEOF" >&5
+echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_sqrtf(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtf_link=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func___builtin_sqrtf_link=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
-fi
-
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtf_link" >&6
-    if test x$glibcxx_cv_func___builtin_sqrtf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sqrtf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
-
-    fi
-  fi
-
-
-  echo "$as_me:$LINENO: checking for __builtin_sqrt declaration" >&5
-echo $ECHO_N "checking for __builtin_sqrt declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sqrt_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sqrt_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
+      #include <wchar.h>
+      #include <stddef.h>
 int
 main ()
 {
- __builtin_sqrt(0);
+wint_t i = WEOF;
   ;
   return 0;
 }
@@ -71405,7 +75268,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -71418,35 +75281,34 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrt_use=yes
+  has_weof=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrt_use=no
+has_weof=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+    echo "$as_me:$LINENO: result: $has_weof" >&5
+echo "${ECHO_T}$has_weof" >&6
 
+    # Tests for wide character functions used in char_traits<wchar_t>.
+    ac_wfuncs=yes
 
-fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_use" >&6
-  if test x$glibcxx_cv_func___builtin_sqrt_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sqrt linkage" >&5
-echo $ECHO_N "checking for __builtin_sqrt linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sqrt_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sqrt_link+set}" = set; then
+
+
+
+
+for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -71457,11 +75319,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sqrt(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -71488,113 +75386,207 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrt_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrt_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  ac_wfuncs=no
 fi
+done
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrt_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrt_link" >&6
-    if test x$glibcxx_cv_func___builtin_sqrt_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sqrt | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
+    # Checks for names injected into std:: by the c_std headers.
 
-    fi
-  fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_sqrtl declaration" >&5
-echo $ECHO_N "checking for __builtin_sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sqrtl_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
 
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
+    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
+    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
+    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
+    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
+    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sqrtl(0);
+return f != $ac_func;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtl_use=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtl_use=no
+eval "$as_ac_var=no"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+else
+  ac_wfuncs=no
 fi
+done
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_use" >&6
-  if test x$glibcxx_cv_func___builtin_sqrtl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sqrtl linkage" >&5
-echo $ECHO_N "checking for __builtin_sqrtl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sqrtl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sqrtl_link+set}" = set; then
+
+    # Checks for wide character functions that are not required
+    # for basic wchar_t support.  Don't disable support if they are missing.
+    # Injection of these is wrapped with guard macros.
+
+
+
+
+
+for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -71605,11 +75597,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sqrtl(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -71636,62 +75664,62 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sqrtl_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sqrtl_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sqrtl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sqrtl_link" >&6
-    if test x$glibcxx_cv_func___builtin_sqrtl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sqrtl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-    fi
-  fi
-
-
-
-  echo "$as_me:$LINENO: checking for __builtin_sinf declaration" >&5
-echo $ECHO_N "checking for __builtin_sinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sinf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sinf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
+fi
+done
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
+echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
+    if test x"$has_weof" = xyes &&
+       test x"$has_wchar_minmax" = xyes &&
+       test x"$ac_wfuncs" = xyes;
+    then
+      ac_isoC99_wchar_t=yes
+    else
+      ac_isoC99_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
+echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
 
-      cat >conftest.$ac_ext <<_ACEOF
+    # Use iconv for wchar_t to char conversions. As such, check for
+    # X/Open Portability Guide, version 2 features (XPG2).
+    if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking iconv.h usability" >&5
+echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_sinf(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <iconv.h>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -71702,7 +75730,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -71715,57 +75743,131 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinf_use=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinf_use=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
+# Is the header present?
+echo "$as_me:$LINENO: checking iconv.h presence" >&5
+echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <iconv.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
 fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_use" >&6
-  if test x$glibcxx_cv_func___builtin_sinf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sinf linkage" >&5
-echo $ECHO_N "checking for __builtin_sinf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sinf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sinf_link+set}" = set; then
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  ac_cv_header_iconv_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
 fi
+if test $ac_cv_header_iconv_h = yes; then
+  ac_has_iconv_h=yes
+else
+  ac_has_iconv_h=no
+fi
+
+
+    if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking langinfo.h usability" >&5
+echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_sinf(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <langinfo.h>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -71779,119 +75881,205 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinf_link=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinf_link=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+ac_header_compiler=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinf_link" >&6
-    if test x$glibcxx_cv_func___builtin_sinf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sinf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+# Is the header present?
+echo "$as_me:$LINENO: checking langinfo.h presence" >&5
+echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
-
-    fi
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <langinfo.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
   fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-  echo "$as_me:$LINENO: checking for __builtin_sin declaration" >&5
-echo $ECHO_N "checking for __builtin_sin declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sin_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sin_use+set}" = set; then
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  ac_cv_header_langinfo_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 
+fi
+if test $ac_cv_header_langinfo_h = yes; then
+  ac_has_langinfo_h=yes
+else
+  ac_has_langinfo_h=no
+fi
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    # Check for existence of libiconv.a providing XPG2 wchar_t support.
+    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
+echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
+if test "${ac_cv_lib_iconv_iconv+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-liconv  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char iconv ();
 int
 main ()
 {
- __builtin_sin(0);
+iconv ();
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sin_use=yes
+  ac_cv_lib_iconv_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sin_use=no
+ac_cv_lib_iconv_iconv=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
+echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
+if test $ac_cv_lib_iconv_iconv = yes; then
+  LIBICONV="-liconv"
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
 
-fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_use" >&6
-  if test x$glibcxx_cv_func___builtin_sin_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sin linkage" >&5
-echo $ECHO_N "checking for __builtin_sin linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sin_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sin_link+set}" = set; then
+
+
+
+
+for ac_func in iconv_open iconv_close iconv nl_langinfo
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -71902,11 +76090,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sin(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -71933,36 +76157,71 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sin_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sin_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+ ac_XPG2funcs=yes
+else
+  ac_XPG2funcs=no
+fi
+done
+
 
+    LIBS="$ac_save_LIBS"
+
+    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
+echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
+    if test x"$ac_has_iconv_h" = xyes &&
+       test x"$ac_has_langinfo_h" = xyes &&
+       test x"$ac_XPG2funcs" = xyes;
+    then
+      ac_XPG2_wchar_t=yes
+    else
+      ac_XPG2_wchar_t=no
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sin_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sin_link" >&6
-    if test x$glibcxx_cv_func___builtin_sin_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sin | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
+echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+    # At the moment, only enable wchar_t specializations if all the
+    # above support is present.
+    if test x"$ac_isoC99_wchar_t" = xyes &&
+       test x"$ac_XPG2_wchar_t" = xyes;
+    then
+      cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
 _ACEOF
 
+      enable_wchar_t=yes
     fi
   fi
+  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
+echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
+  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
+echo "${ECHO_T}$enable_wchar_t" >&6
 
 
-  echo "$as_me:$LINENO: checking for __builtin_sinl declaration" >&5
-echo $ECHO_N "checking for __builtin_sinl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_sinl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_sinl_use+set}" = set; then
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+
+  echo "$as_me:$LINENO: checking for strtold declaration" >&5
+echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -71980,11 +76239,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <stdlib.h>
 int
 main ()
 {
- __builtin_sinl(0);
+ strtold(0, 0);
   ;
   return 0;
 }
@@ -72011,12 +76270,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinl_use=yes
+  glibcxx_cv_func_strtold_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinl_use=no
+glibcxx_cv_func_strtold_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -72029,17 +76288,19 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_use" >&6
-  if test x$glibcxx_cv_func___builtin_sinl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_sinl linkage" >&5
-echo $ECHO_N "checking for __builtin_sinl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_sinl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_sinl_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
+  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
+
+for ac_func in strtold
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -72050,11 +76311,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_sinl(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -72081,37 +76378,33 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_sinl_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_sinl_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_sinl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_sinl_link" >&6
-    if test x$glibcxx_cv_func___builtin_sinl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_sinl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-    fi
-  fi
+fi
+done
 
+  fi
 
 
-  echo "$as_me:$LINENO: checking for __builtin_cosf declaration" >&5
-echo $ECHO_N "checking for __builtin_cosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_cosf_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_cosf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for strtof declaration" >&5
+echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -72129,11 +76422,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <stdlib.h>
 int
 main ()
 {
- __builtin_cosf(0);
+ strtof(0, 0);
   ;
   return 0;
 }
@@ -72160,12 +76453,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosf_use=yes
+  glibcxx_cv_func_strtof_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosf_use=no
+glibcxx_cv_func_strtof_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -72178,17 +76471,19 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_use" >&6
-  if test x$glibcxx_cv_func___builtin_cosf_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_cosf linkage" >&5
-echo $ECHO_N "checking for __builtin_cosf linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_cosf_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_cosf_link+set}" = set; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
+  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
+
+for ac_func in strtof
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-        if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -72199,11 +76494,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
- __builtin_cosf(0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -72230,113 +76561,97 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosf_link=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosf_link=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
 fi
+done
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosf_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosf_link" >&6
-    if test x$glibcxx_cv_func___builtin_cosf_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_cosf | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+  fi
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
 
-    fi
-  fi
+  CXXFLAGS="$ac_save_CXXFLAGS"
 
 
-  echo "$as_me:$LINENO: checking for __builtin_cos declaration" >&5
-echo $ECHO_N "checking for __builtin_cos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_cos_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_cos_use+set}" = set; then
+  if test "${glibcxx_cv_S_ISREG+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <sys/stat.h>
 int
 main ()
 {
- __builtin_cos(0);
+struct stat buffer;
+       fstat(0, &buffer);
+       S_ISREG(buffer.st_mode);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cos_use=yes
+  glibcxx_cv_S_ISREG=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cos_use=no
+glibcxx_cv_S_ISREG=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_use" >&6
-  if test x$glibcxx_cv_func___builtin_cos_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_cos linkage" >&5
-echo $ECHO_N "checking for __builtin_cos linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_cos_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_cos_link+set}" = set; then
+  if test "${glibcxx_cv_S_IFREG+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
-        if test x$gcc_no_link = xyes; then
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -72347,11 +76662,13 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <sys/stat.h>
 int
 main ()
 {
- __builtin_cos(0);
+struct stat buffer;
+       fstat(0, &buffer);
+       S_IFREG & buffer.st_mode;
   ;
   return 0;
 }
@@ -72378,61 +76695,79 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cos_link=yes
+  glibcxx_cv_S_IFREG=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cos_link=no
+glibcxx_cv_S_IFREG=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
 
 fi
 
-    fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cos_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cos_link" >&6
-    if test x$glibcxx_cv_func___builtin_cos_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_cos | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+  if test $glibcxx_cv_S_ISREG = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_ISREG 1
+_ACEOF
 
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
+  elif test $glibcxx_cv_S_IFREG = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_IFREG 1
 _ACEOF
 
-    fi
   fi
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_WRITEV 1
+_ACEOF
+
+    ;;
 
-  echo "$as_me:$LINENO: checking for __builtin_cosl declaration" >&5
-echo $ECHO_N "checking for __builtin_cosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func___builtin_cosl_use+set} != xset; then
-    if test "${glibcxx_cv_func___builtin_cosl_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+  *-freebsd*)
 
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h \
+      machine/endian.h machine/param.h sys/machine.h sys/types.h \
+      fp.h locale.h float.h inttypes.h sys/resource.h sys/stat.h \
+      sys/time.h unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_cosl(0);
-  ;
-  return 0;
-}
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -72443,7 +76778,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
+	 { ac_try='test -z "$ac_c_werror_flag"
 			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -72456,104 +76791,226 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosl_use=yes
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosl_use=no
+ac_header_compiler=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
 fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_use" >&6
-  if test x$glibcxx_cv_func___builtin_cosl_use = x"yes"; then
-    echo "$as_me:$LINENO: checking for __builtin_cosl linkage" >&5
-echo $ECHO_N "checking for __builtin_cosl linkage... $ECHO_C" >&6
-    if test x${glibcxx_cv_func___builtin_cosl_link+set} != xset; then
-      if test "${glibcxx_cv_func___builtin_cosl_link+set}" = set; then
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
-        if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
 fi
-cat >conftest.$ac_ext <<_ACEOF
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+
+  ldver=`$LD --version 2>/dev/null | head -1 | \
+         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
+
+  glibcxx_gnu_ld_version=`echo $ldver | \
+         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+
+  # Set --gc-sections.
+  if test "$with_gnu_ld" = "notbroken"; then
+    # GNU ld it is!  Joy and bunny rabbits!
+
+    # All these tests are for C++; save the language and the compiler flags.
+    # Need to do this so that g++ won't try to link in libstdc++
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-x c++  -Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    # XXX This test is broken at the moment, as symbols required for linking
+    # are now in libsupc++ (not built yet).  In addition, this test has
+    # cored on solaris in the past.  In addition, --gc-sections doesn't
+    # really work at the moment (keeps on discarding used sections, first
+    # .eh_frame and now some of the glibc sections for iconv).
+    # Bzzzzt.  Thanks for playing, maybe next time.
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test "$cross_compiling" = yes; then
+  ac_sectionLDflags=yes
+else
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- __builtin_cosl(0);
-  ;
-  return 0;
-}
+
+     int main(void)
+     {
+       try { throw 1; }
+       catch (...) { };
+       return 0;
+     }
+
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
+rm -f conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
+  (eval $ac_link) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func___builtin_cosl_link=yes
+  ac_sectionLDflags=yes
 else
-  echo "$as_me: failed program was:" >&5
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func___builtin_cosl_link=no
+( exit $ac_status )
+ac_sectionLDflags=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
-
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
     fi
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func___builtin_cosl_link" >&5
-echo "${ECHO_T}$glibcxx_cv_func___builtin_cosl_link" >&6
-    if test x$glibcxx_cv_func___builtin_cosl_link = x"yes"; then
-      ac_tr_func=HAVE_`echo __builtin_cosl | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
-
-cat >>confdefs.h <<_ACEOF
-#define ${ac_tr_func} 1
-_ACEOF
-
+    if test "$ac_sectionLDflags" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
     fi
+    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
+echo "${ECHO_T}$ac_sectionLDflags" >&6
+  fi
+
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
   fi
 
 
 
 
+
+
 echo "$as_me:$LINENO: checking for main in -lm" >&5
 echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
 if test "${ac_cv_lib_m_main+set}" = set; then
@@ -74173,392 +78630,89 @@ if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_header_langinfo_h=$ac_header_preproc
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
-
-fi
-if test $ac_cv_header_langinfo_h = yes; then
-  ac_has_langinfo_h=yes
-else
-  ac_has_langinfo_h=no
-fi
-
-
-
-    # Check for existence of libiconv.a providing XPG2 wchar_t support.
-    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
-echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
-if test "${ac_cv_lib_iconv_iconv+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-liconv  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char iconv ();
-int
-main ()
-{
-iconv ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_lib_iconv_iconv=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_cv_lib_iconv_iconv=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
-echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
-if test $ac_cv_lib_iconv_iconv = yes; then
-  LIBICONV="-liconv"
-fi
-
-    ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIBICONV"
-
-
-
-
-
-
-for ac_func in iconv_open iconv_close iconv nl_langinfo
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
- ac_XPG2funcs=yes
-else
-  ac_XPG2funcs=no
-fi
-done
-
-
-    LIBS="$ac_save_LIBS"
-
-    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
-echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
-    if test x"$ac_has_iconv_h" = xyes &&
-       test x"$ac_has_langinfo_h" = xyes &&
-       test x"$ac_XPG2funcs" = xyes;
-    then
-      ac_XPG2_wchar_t=yes
-    else
-      ac_XPG2_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
-echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
-
-    # At the moment, only enable wchar_t specializations if all the
-    # above support is present.
-    if test x"$ac_isoC99_wchar_t" = xyes &&
-       test x"$ac_XPG2_wchar_t" = xyes;
-    then
-      cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_WCHAR_T 1
-_ACEOF
-
-      enable_wchar_t=yes
-    fi
-  fi
-  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
-echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
-  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
-echo "${ECHO_T}$enable_wchar_t" >&6
-
-
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-
-
-  echo "$as_me:$LINENO: checking for strtold declaration" >&5
-echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-int
-main ()
-{
- strtold(0, 0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtold_use=yes
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtold_use=no
+  ac_header_preproc=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_langinfo_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 
 fi
+if test $ac_cv_header_langinfo_h = yes; then
+  ac_has_langinfo_h=yes
+else
+  ac_has_langinfo_h=no
+fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
-  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
 
-for ac_func in strtold
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+
+    # Check for existence of libiconv.a providing XPG2 wchar_t support.
+    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
+echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
+if test "${ac_cv_lib_iconv_iconv+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-liconv  $LIBS"
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -74569,47 +78723,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
-{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+char iconv ();
 int
 main ()
 {
-return f != $ac_func;
+iconv ();
   ;
   return 0;
 }
@@ -74636,104 +78761,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_cv_lib_iconv_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_cv_lib_iconv_iconv=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
+echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
+if test $ac_cv_lib_iconv_iconv = yes; then
+  LIBICONV="-liconv"
 fi
-done
-
-  fi
-
-
-  echo "$as_me:$LINENO: checking for strtof declaration" >&5
-echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
 
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-int
-main ()
-{
- strtof(0, 0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_cxx_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtof_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtof_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
-fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
-  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
 
-for ac_func in strtof
+for ac_func in iconv_open iconv_close iconv nl_langinfo
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -74835,159 +78888,218 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_XPG2funcs=yes
+else
+  ac_XPG2funcs=no
 fi
 done
 
+
+    LIBS="$ac_save_LIBS"
+
+    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
+echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
+    if test x"$ac_has_iconv_h" = xyes &&
+       test x"$ac_has_langinfo_h" = xyes &&
+       test x"$ac_XPG2funcs" = xyes;
+    then
+      ac_XPG2_wchar_t=yes
+    else
+      ac_XPG2_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
+echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
+
+    # At the moment, only enable wchar_t specializations if all the
+    # above support is present.
+    if test x"$ac_isoC99_wchar_t" = xyes &&
+       test x"$ac_XPG2_wchar_t" = xyes;
+    then
+      cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
+_ACEOF
+
+      enable_wchar_t=yes
+    fi
   fi
+  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
+echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
+  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
+echo "${ECHO_T}$enable_wchar_t" >&6
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LC_MESSAGES 1
+_ACEOF
 
-  CXXFLAGS="$ac_save_CXXFLAGS"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETPAGESIZE 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SETENV 1
+_ACEOF
 
-  if test "${glibcxx_cv_S_ISREG+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SIGSETJMP 1
+_ACEOF
 
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGN 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <sys/stat.h>
-int
-main ()
-{
-struct stat buffer;
-       fstat(0, &buffer);
-       S_ISREG(buffer.st_mode);
-  ;
-  return 0;
-}
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGNF 1
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_S_ISREG=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_S_ISREG=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEF 1
+_ACEOF
 
-fi
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITE 1
+_ACEOF
 
-  if test "${glibcxx_cv_S_IFREG+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FREXPF 1
+_ACEOF
 
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOT 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <sys/stat.h>
-int
-main ()
-{
-struct stat buffer;
-       fstat(0, &buffer);
-       S_IFREG & buffer.st_mode;
-  ;
-  return 0;
-}
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOTF 1
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_S_IFREG=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_S_IFREG=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINF 1
+_ACEOF
 
-fi
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNAN 1
+_ACEOF
 
-  if test $glibcxx_cv_S_ISREG = yes; then
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_ISREG 1
+#define HAVE_ISNANF 1
 _ACEOF
 
-  elif test $glibcxx_cv_S_IFREG = yes; then
+
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_IFREG 1
+#define HAVE_MMAP 1
 _ACEOF
 
-  fi
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ACOSF 1
+_ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_WRITEV 1
+#define HAVE_ASINF 1
 _ACEOF
 
-    ;;
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATAN2F 1
+_ACEOF
 
-  *-freebsd*)
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATANF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_CEILF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGN 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGNF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSHF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_EXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FABSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FLOORF 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FMODF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FREXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LDEXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOG10F 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOGF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MODFF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_POWF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINHF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SQRTF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANHF 1
+_ACEOF
+
+    if test x"long_double_math_on_this_cpu" = x"yes"; then
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINFL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNANL 1
+_ACEOF
 
+    fi
+    ;;
+  *-hpux*)
 
 
 
@@ -75002,8 +79114,7 @@ _ACEOF
 
 for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h \
       machine/endian.h machine/param.h sys/machine.h sys/types.h \
-      fp.h locale.h float.h inttypes.h sys/resource.h sys/stat.h \
-      sys/time.h unistd.h
+      fp.h locale.h float.h inttypes.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -76429,20 +80540,548 @@ done
 
 
 
-for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
-    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
-    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
-    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
-    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
-    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
+    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
+    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
+    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
+    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
+    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  ac_wfuncs=no
+fi
+done
+
+
+    # Checks for wide character functions that are not required
+    # for basic wchar_t support.  Don't disable support if they are missing.
+    # Injection of these is wrapped with guard macros.
+
+
+
+
+
+for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
+echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
+    if test x"$has_weof" = xyes &&
+       test x"$has_wchar_minmax" = xyes &&
+       test x"$ac_wfuncs" = xyes;
+    then
+      ac_isoC99_wchar_t=yes
+    else
+      ac_isoC99_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
+echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
+
+    # Use iconv for wchar_t to char conversions. As such, check for
+    # X/Open Portability Guide, version 2 features (XPG2).
+    if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking iconv.h usability" >&5
+echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <iconv.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking iconv.h presence" >&5
+echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <iconv.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_iconv_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+
+fi
+if test $ac_cv_header_iconv_h = yes; then
+  ac_has_iconv_h=yes
+else
+  ac_has_iconv_h=no
+fi
+
+
+    if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking langinfo.h usability" >&5
+echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <langinfo.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking langinfo.h presence" >&5
+echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <langinfo.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_langinfo_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+
+fi
+if test $ac_cv_header_langinfo_h = yes; then
+  ac_has_langinfo_h=yes
+else
+  ac_has_langinfo_h=no
+fi
+
+
+
+    # Check for existence of libiconv.a providing XPG2 wchar_t support.
+    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
+echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
+if test "${ac_cv_lib_iconv_iconv+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-liconv  $LIBS"
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -76453,47 +81092,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
-{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+char iconv ();
 int
 main ()
 {
-return f != $ac_func;
+iconv ();
   ;
   return 0;
 }
@@ -76520,38 +81130,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_cv_lib_iconv_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_cv_lib_iconv_iconv=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-else
-  ac_wfuncs=no
+echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
+echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
+if test $ac_cv_lib_iconv_iconv = yes; then
+  LIBICONV="-liconv"
 fi
-done
 
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
 
-    # Checks for wide character functions that are not required
-    # for basic wchar_t support.  Don't disable support if they are missing.
-    # Injection of these is wrapped with guard macros.
 
 
 
 
 
-for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+for ac_func in iconv_open iconv_close iconv nl_langinfo
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -76653,38 +81257,123 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_XPG2funcs=yes
+else
+  ac_XPG2funcs=no
 fi
 done
 
 
-    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
-echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
-    if test x"$has_weof" = xyes &&
-       test x"$has_wchar_minmax" = xyes &&
-       test x"$ac_wfuncs" = xyes;
+    LIBS="$ac_save_LIBS"
+
+    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
+echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
+    if test x"$ac_has_iconv_h" = xyes &&
+       test x"$ac_has_langinfo_h" = xyes &&
+       test x"$ac_XPG2funcs" = xyes;
     then
-      ac_isoC99_wchar_t=yes
+      ac_XPG2_wchar_t=yes
     else
-      ac_isoC99_wchar_t=no
+      ac_XPG2_wchar_t=no
     fi
-    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
-echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
+    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
+echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
 
-    # Use iconv for wchar_t to char conversions. As such, check for
-    # X/Open Portability Guide, version 2 features (XPG2).
-    if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
+    # At the moment, only enable wchar_t specializations if all the
+    # above support is present.
+    if test x"$ac_isoC99_wchar_t" = xyes &&
+       test x"$ac_XPG2_wchar_t" = xyes;
+    then
+      cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
+_ACEOF
+
+      enable_wchar_t=yes
+    fi
+  fi
+  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
+echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
+  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
+echo "${ECHO_T}$enable_wchar_t" >&6
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGN 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGNF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FREXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOT 1
+_ACEOF
+
+    case "$target" in
+      *-hpux10*)
+	cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITE 1
+_ACEOF
+
+	cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEF 1
+_ACEOF
+
+	cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINF 1
+_ACEOF
+
+	cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINFF 1
+_ACEOF
+
+	cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNAN 1
+_ACEOF
+
+	cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNANF 1
+_ACEOF
+
+	;;
+    esac
+    ;;
+  *-linux* | *-uclinux* | *-gnu* | *-kfreebsd*-gnu | *-knetbsd*-gnu)
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h \
+      machine/endian.h machine/param.h sys/machine.h sys/types.h \
+      fp.h float.h endian.h inttypes.h locale.h float.h stdint.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking iconv.h usability" >&5
-echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -76692,7 +81381,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <iconv.h>
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -76728,15 +81417,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking iconv.h presence" >&5
-echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <iconv.h>
+#include <$ac_header>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -76770,25 +81459,25 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
@@ -76799,48 +81488,283 @@ _ASBOX
       sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
-echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_cv_header_iconv_h=$ac_header_preproc
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
 fi
-if test $ac_cv_header_iconv_h = yes; then
-  ac_has_iconv_h=yes
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+
+  ldver=`$LD --version 2>/dev/null | head -1 | \
+         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
+
+  glibcxx_gnu_ld_version=`echo $ldver | \
+         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+
+  # Set --gc-sections.
+  if test "$with_gnu_ld" = "notbroken"; then
+    # GNU ld it is!  Joy and bunny rabbits!
+
+    # All these tests are for C++; save the language and the compiler flags.
+    # Need to do this so that g++ won't try to link in libstdc++
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-x c++  -Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    # XXX This test is broken at the moment, as symbols required for linking
+    # are now in libsupc++ (not built yet).  In addition, this test has
+    # cored on solaris in the past.  In addition, --gc-sections doesn't
+    # really work at the moment (keeps on discarding used sections, first
+    # .eh_frame and now some of the glibc sections for iconv).
+    # Bzzzzt.  Thanks for playing, maybe next time.
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test "$cross_compiling" = yes; then
+  ac_sectionLDflags=yes
 else
-  ac_has_iconv_h=no
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+     int main(void)
+     {
+       try { throw 1; }
+       catch (...) { };
+       return 0;
+     }
+
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_sectionLDflags=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_sectionLDflags=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+    if test "$ac_sectionLDflags" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
+echo "${ECHO_T}$ac_sectionLDflags" >&6
+  fi
 
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
 
-    if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
+
+
+
+
+
+echo "$as_me:$LINENO: checking for main in -lm" >&5
+echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_main+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+
+int
+main ()
+{
+main ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_m_main=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_m_main=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
+echo "${ECHO_T}$ac_cv_lib_m_main" >&6
+if test $ac_cv_lib_m_main = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
+
+  LIBS="-lm $LIBS"
+
+fi
+
+
+for ac_func in copysignf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking langinfo.h usability" >&5
-echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <langinfo.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -76854,123 +81778,45 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_header_compiler=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking langinfo.h presence" >&5
-echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <langinfo.h>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
+eval "$as_ac_var=no"
 fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_header_langinfo_h=$ac_header_preproc
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-fi
-if test $ac_cv_header_langinfo_h = yes; then
-  ac_has_langinfo_h=yes
 else
-  ac_has_langinfo_h=no
+  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
+done
 
 
 
-    # Check for existence of libiconv.a providing XPG2 wchar_t support.
-    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
-echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
-if test "${ac_cv_lib_iconv_iconv+set}" = set; then
+for ac_func in __signbit
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-liconv  $LIBS"
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -76981,18 +81827,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
+{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char iconv ();
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-iconv ();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -77019,32 +81894,31 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_iconv_iconv=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_iconv_iconv=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
-echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
-if test $ac_cv_lib_iconv_iconv = yes; then
-  LIBICONV="-liconv"
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-    ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIBICONV"
-
-
-
+else
+  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
+fi
+done
 
 
 
-for ac_func in iconv_open iconv_close iconv nl_langinfo
+for ac_func in __signbitf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -77146,233 +82020,193 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
- ac_XPG2funcs=yes
+
 else
-  ac_XPG2funcs=no
+  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
 done
 
 
-    LIBS="$ac_save_LIBS"
-
-    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
-echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
-    if test x"$ac_has_iconv_h" = xyes &&
-       test x"$ac_has_langinfo_h" = xyes &&
-       test x"$ac_XPG2funcs" = xyes;
-    then
-      ac_XPG2_wchar_t=yes
-    else
-      ac_XPG2_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
-echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
-
-    # At the moment, only enable wchar_t specializations if all the
-    # above support is present.
-    if test x"$ac_isoC99_wchar_t" = xyes &&
-       test x"$ac_XPG2_wchar_t" = xyes;
-    then
-      cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_WCHAR_T 1
-_ACEOF
-
-      enable_wchar_t=yes
-    fi
-  fi
-  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
-echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
-  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
-echo "${ECHO_T}$enable_wchar_t" >&6
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LC_MESSAGES 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_GETPAGESIZE 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SETENV 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SIGSETJMP 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOTF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANF 1
-_ACEOF
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MMAP 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ACOSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ASINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATAN2F 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATANF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_CEILF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSHF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_EXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FABSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FLOORF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FMODF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LDEXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOG10F 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOGF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MODFF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_POWF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINF 1
-_ACEOF
+          if test x$ac_cv_func_copysignl = x"yes"; then
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINHF 1
+for ac_func in __signbitl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SQRTF 1
-_ACEOF
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANF 1
-_ACEOF
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANHF 1
-_ACEOF
+#undef $ac_func
 
-    if test x"long_double_math_on_this_cpu" = x"yes"; then
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEL 1
-_ACEOF
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINFL 1
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
 _ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANL 1
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-    fi
-    ;;
-  *-hpux*)
-
-
-
+else
+  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
+fi
+done
 
+  fi
 
+  # Used in libmath/Makefile.am.
+  if test -n "$LIBMATHOBJS"; then
+    need_libmath=yes
+  fi
 
 
 
+  # Test wchar.h for mbstate_t, which is needed for char_traits and
+  # others even if wchar_t support is not on.
+  echo "$as_me:$LINENO: checking for mbstate_t" >&5
+echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <wchar.h>
+int
+main ()
+{
+mbstate_t teststate;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  have_mbstate_t=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+have_mbstate_t=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
+echo "${ECHO_T}$have_mbstate_t" >&6
+  if test x"$have_mbstate_t" = xyes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MBSTATE_T 1
+_ACEOF
 
+  fi
 
+  # Sanity check for existence of ISO C99 headers for extended encoding.
 
-for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h \
-      machine/endian.h machine/param.h sys/machine.h sys/types.h \
-      fp.h locale.h float.h inttypes.h
+for ac_header in wchar.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -77516,159 +82350,193 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_has_wchar_h=yes
+else
+  ac_has_wchar_h=no
 fi
 
 done
 
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
-
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-
-  ldver=`$LD --version 2>/dev/null | head -1 | \
-         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
-
-  glibcxx_gnu_ld_version=`echo $ldver | \
-         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-
-  # Set --gc-sections.
-  if test "$with_gnu_ld" = "notbroken"; then
-    # GNU ld it is!  Joy and bunny rabbits!
-
-    # All these tests are for C++; save the language and the compiler flags.
-    # Need to do this so that g++ won't try to link in libstdc++
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Wl,--gc-sections'
 
-    # Check for -Wl,--gc-sections
-    # XXX This test is broken at the moment, as symbols required for linking
-    # are now in libsupc++ (not built yet).  In addition, this test has
-    # cored on solaris in the past.  In addition, --gc-sections doesn't
-    # really work at the moment (keeps on discarding used sections, first
-    # .eh_frame and now some of the glibc sections for iconv).
-    # Bzzzzt.  Thanks for playing, maybe next time.
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test "$cross_compiling" = yes; then
-  ac_sectionLDflags=yes
+for ac_header in wctype.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  cat >conftest.$ac_ext <<_ACEOF
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-     int main(void)
-     {
-       try { throw 1; }
-       catch (...) { };
-       return 0;
-     }
-
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_sectionLDflags=yes
+  ac_header_compiler=yes
 else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
+  echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-( exit $ac_status )
-ac_sectionLDflags=no
-fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+ac_header_compiler=no
 fi
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-    if test "$ac_sectionLDflags" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
-echo "${ECHO_T}$ac_sectionLDflags" >&6
-  fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
   fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+ ac_has_wctype_h=yes
+else
+  ac_has_wctype_h=no
+fi
 
+done
 
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  # Only continue checking if the ISO C99 headers exist and support is on.
+  if test x"$ac_has_wchar_h" = xyes &&
+     test x"$ac_has_wctype_h" = xyes &&
+     test x"$enable_c_mbchar" != xno; then
+
+    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
+    # numeric_limits can instantiate type_traits<wchar_t>
+    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
+echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-
+#include <wchar.h>
 int
 main ()
 {
-main ();
+int i = WCHAR_MIN; int j = WCHAR_MAX;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -77682,102 +82550,47 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  has_wchar_minmax=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
-
-  LIBS="-lm $LIBS"
-
+has_wchar_minmax=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
+echo "${ECHO_T}$has_wchar_minmax" >&6
 
-
-for ac_func in copysignf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    # Test wchar.h for WEOF, which is what we use to determine whether
+    # to specialize for char_traits<wchar_t> or not.
+    echo "$as_me:$LINENO: checking for WEOF" >&5
+echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
 
+      #include <wchar.h>
+      #include <stddef.h>
 int
 main ()
 {
-return f != $ac_func;
+wint_t i = WEOF;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -77791,37 +82604,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  has_weof=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+has_weof=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    echo "$as_me:$LINENO: result: $has_weof" >&5
+echo "${ECHO_T}$has_weof" >&6
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
-fi
-done
+    # Tests for wide character functions used in char_traits<wchar_t>.
+    ac_wfuncs=yes
 
 
 
-for ac_func in __signbit
+
+
+
+for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -77912,26 +82720,77 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  ac_wfuncs=no
+fi
+done
+
+
+    # Checks for names injected into std:: by the c_std headers.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
-fi
-done
 
 
 
-for ac_func in __signbitf
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
+    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
+    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
+    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
+    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
+    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -78035,14 +82894,20 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 _ACEOF
 
 else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
+  ac_wfuncs=no
 fi
 done
 
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+    # Checks for wide character functions that are not required
+    # for basic wchar_t support.  Don't disable support if they are missing.
+    # Injection of these is wrapped with guard macros.
 
-for ac_func in __signbitl
+
+
+
+
+for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -78145,95 +83010,37 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
-  fi
-
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
-
-
-
-  # Test wchar.h for mbstate_t, which is needed for char_traits and
-  # others even if wchar_t support is not on.
-  echo "$as_me:$LINENO: checking for mbstate_t" >&5
-echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <wchar.h>
-int
-main ()
-{
-mbstate_t teststate;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  have_mbstate_t=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-have_mbstate_t=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
-echo "${ECHO_T}$have_mbstate_t" >&6
-  if test x"$have_mbstate_t" = xyes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MBSTATE_T 1
-_ACEOF
-
-  fi
 
-  # Sanity check for existence of ISO C99 headers for extended encoding.
+    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
+echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
+    if test x"$has_weof" = xyes &&
+       test x"$has_wchar_minmax" = xyes &&
+       test x"$ac_wfuncs" = xyes;
+    then
+      ac_isoC99_wchar_t=yes
+    else
+      ac_isoC99_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
+echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
 
-for ac_header in wchar.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+    # Use iconv for wchar_t to char conversions. As such, check for
+    # X/Open Portability Guide, version 2 features (XPG2).
+    if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking iconv.h usability" >&5
+echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -78241,7 +83048,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <$ac_header>
+#include <iconv.h>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -78277,15 +83084,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking iconv.h presence" >&5
+echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <$ac_header>
+#include <iconv.h>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -78319,25 +83126,25 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
@@ -78348,44 +83155,36 @@ _ASBOX
       sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  eval "$as_ac_Header=\$ac_header_preproc"
+  ac_cv_header_iconv_h=$ac_header_preproc
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 
 fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
- ac_has_wchar_h=yes
+if test $ac_cv_header_iconv_h = yes; then
+  ac_has_iconv_h=yes
 else
-  ac_has_wchar_h=no
+  ac_has_iconv_h=no
 fi
 
-done
-
 
-for ac_header in wctype.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+    if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking langinfo.h usability" >&5
+echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -78393,7 +83192,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <$ac_header>
+#include <langinfo.h>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -78429,389 +83228,105 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
- ac_has_wctype_h=yes
-else
-  ac_has_wctype_h=no
-fi
-
-done
-
-
-  # Only continue checking if the ISO C99 headers exist and support is on.
-  if test x"$ac_has_wchar_h" = xyes &&
-     test x"$ac_has_wctype_h" = xyes &&
-     test x"$enable_c_mbchar" != xno; then
-
-    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
-    # numeric_limits can instantiate type_traits<wchar_t>
-    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
-echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <wchar.h>
-int
-main ()
-{
-int i = WCHAR_MIN; int j = WCHAR_MAX;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  has_wchar_minmax=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-has_wchar_minmax=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
-echo "${ECHO_T}$has_wchar_minmax" >&6
-
-    # Test wchar.h for WEOF, which is what we use to determine whether
-    # to specialize for char_traits<wchar_t> or not.
-    echo "$as_me:$LINENO: checking for WEOF" >&5
-echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-      #include <wchar.h>
-      #include <stddef.h>
-int
-main ()
-{
-wint_t i = WEOF;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  has_weof=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-has_weof=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_weof" >&5
-echo "${ECHO_T}$has_weof" >&6
-
-    # Tests for wide character functions used in char_traits<wchar_t>.
-    ac_wfuncs=yes
-
-
-
-
-
-
-for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
+echo "$as_me:$LINENO: checking langinfo.h presence" >&5
+echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <langinfo.h>
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+  ac_header_preproc=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_wfuncs=no
+  ac_cv_header_langinfo_h=$ac_header_preproc
 fi
-done
-
-
-    # Checks for names injected into std:: by the c_std headers.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 
+fi
+if test $ac_cv_header_langinfo_h = yes; then
+  ac_has_langinfo_h=yes
+else
+  ac_has_langinfo_h=no
+fi
 
 
 
-for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
-    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
-    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
-    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
-    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
-    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+    # Check for existence of libiconv.a providing XPG2 wchar_t support.
+    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
+echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
+if test "${ac_cv_lib_iconv_iconv+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-liconv  $LIBS"
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -78822,47 +83337,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
-{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+char iconv ();
 int
 main ()
 {
-return f != $ac_func;
+iconv ();
   ;
   return 0;
 }
@@ -78889,38 +83375,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_cv_lib_iconv_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_cv_lib_iconv_iconv=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-else
-  ac_wfuncs=no
+echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
+echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
+if test $ac_cv_lib_iconv_iconv = yes; then
+  LIBICONV="-liconv"
 fi
-done
 
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
 
-    # Checks for wide character functions that are not required
-    # for basic wchar_t support.  Don't disable support if they are missing.
-    # Injection of these is wrapped with guard macros.
 
 
 
 
 
-for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+for ac_func in iconv_open iconv_close iconv nl_langinfo
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -79022,38 +83502,80 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_XPG2funcs=yes
+else
+  ac_XPG2funcs=no
 fi
 done
 
 
-    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
-echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
-    if test x"$has_weof" = xyes &&
-       test x"$has_wchar_minmax" = xyes &&
-       test x"$ac_wfuncs" = xyes;
+    LIBS="$ac_save_LIBS"
+
+    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
+echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
+    if test x"$ac_has_iconv_h" = xyes &&
+       test x"$ac_has_langinfo_h" = xyes &&
+       test x"$ac_XPG2funcs" = xyes;
     then
-      ac_isoC99_wchar_t=yes
+      ac_XPG2_wchar_t=yes
     else
-      ac_isoC99_wchar_t=no
+      ac_XPG2_wchar_t=no
     fi
-    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
-echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
+    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
+echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
 
-    # Use iconv for wchar_t to char conversions. As such, check for
-    # X/Open Portability Guide, version 2 features (XPG2).
-    if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
+    # At the moment, only enable wchar_t specializations if all the
+    # above support is present.
+    if test x"$ac_isoC99_wchar_t" = xyes &&
+       test x"$ac_XPG2_wchar_t" = xyes;
+    then
+      cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
+_ACEOF
+
+      enable_wchar_t=yes
+    fi
+  fi
+  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
+echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
+  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
+echo "${ECHO_T}$enable_wchar_t" >&6
+
+
+    # For LFS.
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_INT64_T 1
+_ACEOF
+
+    case "$target" in
+      *-uclinux*)
+        # Don't enable LFS with uClibc
+        ;;
+      *)
+        cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_LFS 1
+_ACEOF
+
+    esac
+
+    # For showmanyc_helper().
+
+
+for ac_header in sys/ioctl.h sys/filio.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking iconv.h usability" >&5
-echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -79061,7 +83583,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <iconv.h>
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -79097,15 +83619,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking iconv.h presence" >&5
-echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <iconv.h>
+#include <$ac_header>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -79139,25 +83661,25 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
@@ -79168,36 +83690,245 @@ _ASBOX
       sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
-echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+  if test "${glibcxx_cv_POLL+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <poll.h>
+int
+main ()
+{
+struct pollfd pfd[1];
+       pfd[0].events = POLLIN;
+       poll(pfd, 1, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_POLL=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_POLL=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+fi
+
+  if test $glibcxx_cv_POLL = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_POLL 1
+_ACEOF
+
+  fi
+
+
+  if test "${glibcxx_cv_S_ISREG+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat buffer;
+       fstat(0, &buffer);
+       S_ISREG(buffer.st_mode);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_S_ISREG=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_S_ISREG=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+fi
+
+  if test "${glibcxx_cv_S_IFREG+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_cv_header_iconv_h=$ac_header_preproc
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat buffer;
+       fstat(0, &buffer);
+       S_IFREG & buffer.st_mode;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_S_IFREG=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_S_IFREG=no
 fi
-if test $ac_cv_header_iconv_h = yes; then
-  ac_has_iconv_h=yes
-else
-  ac_has_iconv_h=no
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
 fi
 
+  if test $glibcxx_cv_S_ISREG = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_ISREG 1
+_ACEOF
 
-    if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
+  elif test $glibcxx_cv_S_IFREG = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_IFREG 1
+_ACEOF
+
+  fi
+
+
+    # For xsputn_2().
+
+for ac_header in sys/uio.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking langinfo.h usability" >&5
-echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -79205,7 +83936,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <langinfo.h>
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -79241,15 +83972,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking langinfo.h presence" >&5
-echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <langinfo.h>
+#include <$ac_header>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -79283,25 +84014,25 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
@@ -79312,34 +84043,32 @@ _ASBOX
       sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
-echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_cv_header_langinfo_h=$ac_header_preproc
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
 fi
-if test $ac_cv_header_langinfo_h = yes; then
-  ac_has_langinfo_h=yes
-else
-  ac_has_langinfo_h=no
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
 fi
 
+done
 
 
-    # Check for existence of libiconv.a providing XPG2 wchar_t support.
-    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
-echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
-if test "${ac_cv_lib_iconv_iconv+set}" = set; then
+  if test "${glibcxx_cv_WRITEV+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-liconv  $LIBS"
-if test x$gcc_no_link = xyes; then
+
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -79350,18 +84079,12 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char iconv ();
+#include <sys/uio.h>
 int
 main ()
 {
-iconv ();
+struct iovec iov[2];
+       writev(0, iov, 0);
   ;
   return 0;
 }
@@ -79388,178 +84111,84 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_iconv_iconv=yes
+  glibcxx_cv_WRITEV=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_iconv_iconv=no
+glibcxx_cv_WRITEV=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
-echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
-if test $ac_cv_lib_iconv_iconv = yes; then
-  LIBICONV="-liconv"
-fi
-
-    ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIBICONV"
 
+fi
 
+  if test $glibcxx_cv_WRITEV = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_WRITEV 1
+_ACEOF
 
+  fi
 
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ACOSF 1
+_ACEOF
 
-for ac_func in iconv_open iconv_close iconv nl_langinfo
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ASINF 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
 
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATANF 1
+_ACEOF
 
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATAN2F 1
+_ACEOF
 
-#undef $ac_func
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_CEILF 1
+_ACEOF
 
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGN 1
+_ACEOF
 
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGNF 1
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSF 1
 _ACEOF
- ac_XPG2funcs=yes
-else
-  ac_XPG2funcs=no
-fi
-done
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSHF 1
+_ACEOF
 
-    LIBS="$ac_save_LIBS"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_EXPF 1
+_ACEOF
 
-    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
-echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
-    if test x"$ac_has_iconv_h" = xyes &&
-       test x"$ac_has_langinfo_h" = xyes &&
-       test x"$ac_XPG2funcs" = xyes;
-    then
-      ac_XPG2_wchar_t=yes
-    else
-      ac_XPG2_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
-echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FABSF 1
+_ACEOF
 
-    # At the moment, only enable wchar_t specializations if all the
-    # above support is present.
-    if test x"$ac_isoC99_wchar_t" = xyes &&
-       test x"$ac_XPG2_wchar_t" = xyes;
-    then
-      cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_WCHAR_T 1
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITE 1
 _ACEOF
 
-      enable_wchar_t=yes
-    fi
-  fi
-  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
-echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
-  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
-echo "${ECHO_T}$enable_wchar_t" >&6
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEF 1
+_ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
+#define HAVE_FLOORF 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
+#define HAVE_FMODF 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
@@ -79570,54 +84199,182 @@ _ACEOF
 #define HAVE_HYPOT 1
 _ACEOF
 
-    case "$target" in
-      *-hpux10*)
-	cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-	cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEF 1
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOTF 1
 _ACEOF
 
-	cat >>confdefs.h <<\_ACEOF
+    cat >>confdefs.h <<\_ACEOF
 #define HAVE_ISINF 1
 _ACEOF
 
-	cat >>confdefs.h <<\_ACEOF
+    cat >>confdefs.h <<\_ACEOF
 #define HAVE_ISINFF 1
 _ACEOF
 
-	cat >>confdefs.h <<\_ACEOF
+    cat >>confdefs.h <<\_ACEOF
 #define HAVE_ISNAN 1
 _ACEOF
 
-	cat >>confdefs.h <<\_ACEOF
+    cat >>confdefs.h <<\_ACEOF
 #define HAVE_ISNANF 1
 _ACEOF
 
-	;;
-    esac
-    ;;
-  *-linux* | *-uclinux* | *-gnu* | *-kfreebsd*-gnu | *-knetbsd*-gnu)
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOGF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOG10F 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MODFF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINHF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINCOS 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINCOSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SQRTF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANF 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANHF 1
+_ACEOF
 
+    if test x"long_double_math_on_this_cpu" = x"yes"; then
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ACOSL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ASINL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATANL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATAN2L 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_CEILL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGNL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSHL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_EXPL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_FABSL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_FLOORL 1
+_ACEOF
 
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_FMODL 1
+_ACEOF
 
-for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h \
-      machine/endian.h machine/param.h sys/machine.h sys/types.h \
-      fp.h float.h endian.h inttypes.h locale.h float.h stdint.h
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_FREXPL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOTL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINFL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNANL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOGL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOG10L 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_MODFL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_POWL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINHL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINCOSL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_SQRTL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANHL 1
+_ACEOF
+
+    fi
+    ;;
+  *-mingw32*)
+
+
+
+for ac_header in sys/types.h locale.h float.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -79766,8 +84523,6 @@ fi
 
 done
 
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-
 
   # If we're not using GNU ld, then there's no point in even trying these
   # tests.  Check for that first.  We should have already tested for gld
@@ -80951,9 +85706,510 @@ return f != $ac_func;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  ac_wfuncs=no
+fi
+done
+
+
+    # Checks for names injected into std:: by the c_std headers.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
+    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
+    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
+    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
+    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
+    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  ac_wfuncs=no
+fi
+done
+
+
+    # Checks for wide character functions that are not required
+    # for basic wchar_t support.  Don't disable support if they are missing.
+    # Injection of these is wrapped with guard macros.
+
+
+
+
+
+for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
+echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
+    if test x"$has_weof" = xyes &&
+       test x"$has_wchar_minmax" = xyes &&
+       test x"$ac_wfuncs" = xyes;
+    then
+      ac_isoC99_wchar_t=yes
+    else
+      ac_isoC99_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
+echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
+
+    # Use iconv for wchar_t to char conversions. As such, check for
+    # X/Open Portability Guide, version 2 features (XPG2).
+    if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking iconv.h usability" >&5
+echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <iconv.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking iconv.h presence" >&5
+echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <iconv.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_iconv_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+
+fi
+if test $ac_cv_header_iconv_h = yes; then
+  ac_has_iconv_h=yes
+else
+  ac_has_iconv_h=no
+fi
+
+
+    if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking langinfo.h usability" >&5
+echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <langinfo.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -80967,96 +86223,123 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_header_compiler=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+ac_header_compiler=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
+# Is the header present?
+echo "$as_me:$LINENO: checking langinfo.h presence" >&5
+echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <langinfo.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
 else
-  ac_wfuncs=no
+  ac_cpp_err=yes
 fi
-done
-
-
-    # Checks for names injected into std:: by the c_std headers.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_langinfo_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 
+fi
+if test $ac_cv_header_langinfo_h = yes; then
+  ac_has_langinfo_h=yes
+else
+  ac_has_langinfo_h=no
+fi
 
 
 
-for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
-    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
-    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
-    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
-    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
-    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+    # Check for existence of libiconv.a providing XPG2 wchar_t support.
+    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
+echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
+if test "${ac_cv_lib_iconv_iconv+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-liconv  $LIBS"
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -81067,47 +86350,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
-{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+char iconv ();
 int
 main ()
 {
-return f != $ac_func;
+iconv ();
   ;
   return 0;
 }
@@ -81134,38 +86388,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_cv_lib_iconv_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_cv_lib_iconv_iconv=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-else
-  ac_wfuncs=no
+echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
+echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
+if test $ac_cv_lib_iconv_iconv = yes; then
+  LIBICONV="-liconv"
 fi
-done
 
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
 
-    # Checks for wide character functions that are not required
-    # for basic wchar_t support.  Don't disable support if they are missing.
-    # Injection of these is wrapped with guard macros.
 
 
 
 
 
-for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+for ac_func in iconv_open iconv_close iconv nl_langinfo
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -81267,38 +86515,76 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_XPG2funcs=yes
+else
+  ac_XPG2funcs=no
 fi
 done
 
 
-    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
-echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
-    if test x"$has_weof" = xyes &&
-       test x"$has_wchar_minmax" = xyes &&
-       test x"$ac_wfuncs" = xyes;
+    LIBS="$ac_save_LIBS"
+
+    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
+echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
+    if test x"$ac_has_iconv_h" = xyes &&
+       test x"$ac_has_langinfo_h" = xyes &&
+       test x"$ac_XPG2funcs" = xyes;
     then
-      ac_isoC99_wchar_t=yes
+      ac_XPG2_wchar_t=yes
     else
-      ac_isoC99_wchar_t=no
+      ac_XPG2_wchar_t=no
     fi
-    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
-echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
+    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
+echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
 
-    # Use iconv for wchar_t to char conversions. As such, check for
-    # X/Open Portability Guide, version 2 features (XPG2).
-    if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
+    # At the moment, only enable wchar_t specializations if all the
+    # above support is present.
+    if test x"$ac_isoC99_wchar_t" = xyes &&
+       test x"$ac_XPG2_wchar_t" = xyes;
+    then
+      cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
+_ACEOF
+
+      enable_wchar_t=yes
+    fi
+  fi
+  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
+echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
+  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
+echo "${ECHO_T}$enable_wchar_t" >&6
+
+    ;;
+  *-netbsd*)
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h \
+      machine/endian.h machine/param.h sys/machine.h sys/types.h \
+      fp.h locale.h float.h inttypes.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking iconv.h usability" >&5
-echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -81306,7 +86592,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <iconv.h>
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -81342,15 +86628,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking iconv.h presence" >&5
-echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <iconv.h>
+#include <$ac_header>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -81384,25 +86670,25 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
@@ -81413,177 +86699,150 @@ _ASBOX
       sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
-echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_cv_header_iconv_h=$ac_header_preproc
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
 fi
-if test $ac_cv_header_iconv_h = yes; then
-  ac_has_iconv_h=yes
-else
-  ac_has_iconv_h=no
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
 fi
 
+done
 
-    if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking langinfo.h usability" >&5
-echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-#include <langinfo.h>
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
 
-ac_header_compiler=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
 
-# Is the header present?
-echo "$as_me:$LINENO: checking langinfo.h presence" >&5
-echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+
+  ldver=`$LD --version 2>/dev/null | head -1 | \
+         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
+
+  glibcxx_gnu_ld_version=`echo $ldver | \
+         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+
+  # Set --gc-sections.
+  if test "$with_gnu_ld" = "notbroken"; then
+    # GNU ld it is!  Joy and bunny rabbits!
+
+    # All these tests are for C++; save the language and the compiler flags.
+    # Need to do this so that g++ won't try to link in libstdc++
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-x c++  -Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    # XXX This test is broken at the moment, as symbols required for linking
+    # are now in libsupc++ (not built yet).  In addition, this test has
+    # cored on solaris in the past.  In addition, --gc-sections doesn't
+    # really work at the moment (keeps on discarding used sections, first
+    # .eh_frame and now some of the glibc sections for iconv).
+    # Bzzzzt.  Thanks for playing, maybe next time.
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test "$cross_compiling" = yes; then
+  ac_sectionLDflags=yes
+else
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <langinfo.h>
+
+     int main(void)
+     {
+       try { throw 1; }
+       catch (...) { };
+       return 0;
+     }
+
 _ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
   ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_sectionLDflags=yes
 else
-  echo "$as_me: failed program was:" >&5
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
+( exit $ac_status )
+ac_sectionLDflags=no
 fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_header_langinfo_h=$ac_header_preproc
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+    if test "$ac_sectionLDflags" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
+echo "${ECHO_T}$ac_sectionLDflags" >&6
+  fi
 
-fi
-if test $ac_cv_header_langinfo_h = yes; then
-  ac_has_langinfo_h=yes
-else
-  ac_has_langinfo_h=no
-fi
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
 
 
 
-    # Check for existence of libiconv.a providing XPG2 wchar_t support.
-    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
-echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
-if test "${ac_cv_lib_iconv_iconv+set}" = set; then
+
+
+
+echo "$as_me:$LINENO: checking for main in -lm" >&5
+echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_main+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="-liconv  $LIBS"
+LIBS="-lm  $LIBS"
 if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
@@ -81596,17 +86855,11 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char iconv ();
+
 int
 main ()
 {
-iconv ();
+main ();
   ;
   return 0;
 }
@@ -81633,32 +86886,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_iconv_iconv=yes
+  ac_cv_lib_m_main=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_iconv_iconv=no
+ac_cv_lib_m_main=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
 LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
-echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
-if test $ac_cv_lib_iconv_iconv = yes; then
-  LIBICONV="-liconv"
-fi
-
-    ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIBICONV"
-
-
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
+echo "${ECHO_T}$ac_cv_lib_m_main" >&6
+if test $ac_cv_lib_m_main = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
 
+  LIBS="-lm $LIBS"
 
+fi
 
 
-for ac_func in iconv_open iconv_close iconv nl_langinfo
+for ac_func in copysignf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -81760,92 +87011,81 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
- ac_XPG2funcs=yes
+
 else
-  ac_XPG2funcs=no
+  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
 
-    LIBS="$ac_save_LIBS"
-
-    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
-echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
-    if test x"$ac_has_iconv_h" = xyes &&
-       test x"$ac_has_langinfo_h" = xyes &&
-       test x"$ac_XPG2funcs" = xyes;
-    then
-      ac_XPG2_wchar_t=yes
-    else
-      ac_XPG2_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
-echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
-
-    # At the moment, only enable wchar_t specializations if all the
-    # above support is present.
-    if test x"$ac_isoC99_wchar_t" = xyes &&
-       test x"$ac_XPG2_wchar_t" = xyes;
-    then
-      cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_WCHAR_T 1
-_ACEOF
-
-      enable_wchar_t=yes
-    fi
-  fi
-  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
-echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
-  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
-echo "${ECHO_T}$enable_wchar_t" >&6
-
-
-    # For LFS.
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_INT64_T 1
-_ACEOF
-
-    case "$target" in
-      *-uclinux*)
-        # Don't enable LFS with uClibc
-        ;;
-      *)
-        cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_LFS 1
-_ACEOF
-
-    esac
-
-    # For showmanyc_helper().
-
 
-for ac_header in sys/ioctl.h sys/filio.h
+for ac_func in __signbit
 do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -81859,121 +87099,45 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_header_compiler=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
+eval "$as_ac_var=no"
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
+else
+  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
-
 done
 
 
-  if test "${glibcxx_cv_POLL+set}" = set; then
+
+for ac_func in __signbitf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-    if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -81984,13 +87148,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <poll.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-struct pollfd pfd[1];
-       pfd[0].events = POLLIN;
-       poll(pfd, 1, 0);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -82017,31 +87215,40 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_POLL=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_POLL=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
-
-  if test $glibcxx_cv_POLL = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_POLL 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-  fi
+else
+  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
+fi
+done
 
 
-  if test "${glibcxx_cv_S_ISREG+set}" = set; then
+          if test x$ac_cv_func_copysignl = x"yes"; then
+
+for ac_func in __signbitl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-    if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -82052,13 +87259,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <sys/stat.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-struct stat buffer;
-       fstat(0, &buffer);
-       S_ISREG(buffer.st_mode);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -82085,47 +87326,59 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_S_ISREG=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_S_ISREG=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-  if test "${glibcxx_cv_S_IFREG+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
+  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
-cat >conftest.$ac_ext <<_ACEOF
+done
+
+  fi
+
+  # Used in libmath/Makefile.am.
+  if test -n "$LIBMATHOBJS"; then
+    need_libmath=yes
+  fi
+
+
+
+  # Test wchar.h for mbstate_t, which is needed for char_traits and
+  # others even if wchar_t support is not on.
+  echo "$as_me:$LINENO: checking for mbstate_t" >&5
+echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <sys/stat.h>
+#include <wchar.h>
 int
 main ()
 {
-struct stat buffer;
-       fstat(0, &buffer);
-       S_IFREG & buffer.st_mode;
+mbstate_t teststate;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -82139,40 +87392,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_S_IFREG=yes
+  have_mbstate_t=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_S_IFREG=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+have_mbstate_t=no
 fi
-
-  if test $glibcxx_cv_S_ISREG = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_ISREG 1
-_ACEOF
-
-  elif test $glibcxx_cv_S_IFREG = yes; then
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
+echo "${ECHO_T}$have_mbstate_t" >&6
+  if test x"$have_mbstate_t" = xyes; then
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_S_IFREG 1
+#define HAVE_MBSTATE_T 1
 _ACEOF
 
   fi
 
+  # Sanity check for existence of ISO C99 headers for extended encoding.
 
-    # For xsputn_2().
-
-for ac_header in sys/uio.h
+for ac_header in wchar.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -82316,323 +87561,15 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
-
-fi
-
-done
-
-
-  if test "${glibcxx_cv_WRITEV+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <sys/uio.h>
-int
-main ()
-{
-struct iovec iov[2];
-       writev(0, iov, 0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_WRITEV=yes
+ ac_has_wchar_h=yes
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_WRITEV=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-
+  ac_has_wchar_h=no
 fi
 
-  if test $glibcxx_cv_WRITEV = yes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_WRITEV 1
-_ACEOF
-
-  fi
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ACOSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ASINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATANF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATAN2F 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_CEILF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSHF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_EXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FABSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FLOORF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FMODF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOTF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINFF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOGF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOG10F 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MODFF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINHF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINCOS 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINCOSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SQRTF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANHF 1
-_ACEOF
-
-    if test x"long_double_math_on_this_cpu" = x"yes"; then
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ACOSL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ASINL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATANL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATAN2L 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_CEILL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSHL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_EXPL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_FABSL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_FLOORL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_FMODL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOTL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINFL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOGL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOG10L 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_MODFL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_POWL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINHL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINCOSL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_SQRTL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANHL 1
-_ACEOF
-
-    fi
-    ;;
-  *-mingw32*)
-
+done
 
 
-for ac_header in sys/types.h locale.h float.h
+for ac_header in wctype.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -82776,134 +87713,142 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_has_wctype_h=yes
+else
+  ac_has_wctype_h=no
 fi
 
 done
 
 
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
-
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-
-  ldver=`$LD --version 2>/dev/null | head -1 | \
-         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
-
-  glibcxx_gnu_ld_version=`echo $ldver | \
-         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+  # Only continue checking if the ISO C99 headers exist and support is on.
+  if test x"$ac_has_wchar_h" = xyes &&
+     test x"$ac_has_wctype_h" = xyes &&
+     test x"$enable_c_mbchar" != xno; then
 
-  # Set --gc-sections.
-  if test "$with_gnu_ld" = "notbroken"; then
-    # GNU ld it is!  Joy and bunny rabbits!
+    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
+    # numeric_limits can instantiate type_traits<wchar_t>
+    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
+echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <wchar.h>
+int
+main ()
+{
+int i = WCHAR_MIN; int j = WCHAR_MAX;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  has_wchar_minmax=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-    # All these tests are for C++; save the language and the compiler flags.
-    # Need to do this so that g++ won't try to link in libstdc++
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Wl,--gc-sections'
+has_wchar_minmax=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
+echo "${ECHO_T}$has_wchar_minmax" >&6
 
-    # Check for -Wl,--gc-sections
-    # XXX This test is broken at the moment, as symbols required for linking
-    # are now in libsupc++ (not built yet).  In addition, this test has
-    # cored on solaris in the past.  In addition, --gc-sections doesn't
-    # really work at the moment (keeps on discarding used sections, first
-    # .eh_frame and now some of the glibc sections for iconv).
-    # Bzzzzt.  Thanks for playing, maybe next time.
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test "$cross_compiling" = yes; then
-  ac_sectionLDflags=yes
-else
-  cat >conftest.$ac_ext <<_ACEOF
+    # Test wchar.h for WEOF, which is what we use to determine whether
+    # to specialize for char_traits<wchar_t> or not.
+    echo "$as_me:$LINENO: checking for WEOF" >&5
+echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-     int main(void)
-     {
-       try { throw 1; }
-       catch (...) { };
-       return 0;
-     }
-
+      #include <wchar.h>
+      #include <stddef.h>
+int
+main ()
+{
+wint_t i = WEOF;
+  ;
+  return 0;
+}
 _ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_sectionLDflags=yes
+  has_weof=yes
 else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
+  echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-( exit $ac_status )
-ac_sectionLDflags=no
-fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+has_weof=no
 fi
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-    if test "$ac_sectionLDflags" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
-echo "${ECHO_T}$ac_sectionLDflags" >&6
-  fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    echo "$as_me:$LINENO: result: $has_weof" >&5
+echo "${ECHO_T}$has_weof" >&6
 
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
-  fi
+    # Tests for wide character functions used in char_traits<wchar_t>.
+    ac_wfuncs=yes
 
 
 
 
 
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
+for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -82914,12 +87859,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
 
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
-main ();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -82946,30 +87926,82 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-  LIBS="-lm $LIBS"
-
+else
+  ac_wfuncs=no
 fi
+done
 
 
-for ac_func in copysignf
+    # Checks for names injected into std:: by the c_std headers.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
+    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
+    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
+    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
+    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
+    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -83073,13 +88105,20 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 _ACEOF
 
 else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
+  ac_wfuncs=no
 fi
 done
 
 
+    # Checks for wide character functions that are not required
+    # for basic wchar_t support.  Don't disable support if they are missing.
+    # Injection of these is wrapped with guard macros.
+
+
 
-for ac_func in __signbit
+
+
+for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -83182,73 +88221,345 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
 
+    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
+echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
+    if test x"$has_weof" = xyes &&
+       test x"$has_wchar_minmax" = xyes &&
+       test x"$ac_wfuncs" = xyes;
+    then
+      ac_isoC99_wchar_t=yes
+    else
+      ac_isoC99_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
+echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
 
-for ac_func in __signbitf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+    # Use iconv for wchar_t to char conversions. As such, check for
+    # X/Open Portability Guide, version 2 features (XPG2).
+    if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking iconv.h usability" >&5
+echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <iconv.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking iconv.h presence" >&5
+echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
+#include <iconv.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_iconv_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 
-#undef $ac_func
+fi
+if test $ac_cv_header_iconv_h = yes; then
+  ac_has_iconv_h=yes
+else
+  ac_has_iconv_h=no
+fi
+
+
+    if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking langinfo.h usability" >&5
+echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <langinfo.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking langinfo.h presence" >&5
+echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <langinfo.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_langinfo_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+
+fi
+if test $ac_cv_header_langinfo_h = yes; then
+  ac_has_langinfo_h=yes
+else
+  ac_has_langinfo_h=no
+fi
+
+
+
+    # Check for existence of libiconv.a providing XPG2 wchar_t support.
+    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
+echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
+if test "${ac_cv_lib_iconv_iconv+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-liconv  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
-{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+char iconv ();
 int
 main ()
 {
-return f != $ac_func;
+iconv ();
   ;
   return 0;
 }
@@ -83275,32 +88586,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_cv_lib_iconv_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_cv_lib_iconv_iconv=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
+echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
+echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
+if test $ac_cv_lib_iconv_iconv = yes; then
+  LIBICONV="-liconv"
 fi
-done
+
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
 
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
 
-for ac_func in __signbitl
+
+
+
+for ac_func in iconv_open iconv_close iconv nl_langinfo
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -83402,234 +88713,111 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_XPG2funcs=yes
 else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
+  ac_XPG2funcs=no
 fi
 done
 
-  fi
 
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
+    LIBS="$ac_save_LIBS"
+
+    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
+echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
+    if test x"$ac_has_iconv_h" = xyes &&
+       test x"$ac_has_langinfo_h" = xyes &&
+       test x"$ac_XPG2funcs" = xyes;
+    then
+      ac_XPG2_wchar_t=yes
+    else
+      ac_XPG2_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
+echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
+
+    # At the moment, only enable wchar_t specializations if all the
+    # above support is present.
+    if test x"$ac_isoC99_wchar_t" = xyes &&
+       test x"$ac_XPG2_wchar_t" = xyes;
+    then
+      cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
+_ACEOF
+
+      enable_wchar_t=yes
+    fi
   fi
+  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
+echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
+  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
+echo "${ECHO_T}$enable_wchar_t" >&6
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGN 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COPYSIGNF 1
+_ACEOF
 
-  # Test wchar.h for mbstate_t, which is needed for char_traits and
-  # others even if wchar_t support is not on.
-  echo "$as_me:$LINENO: checking for mbstate_t" >&5
-echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEF 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <wchar.h>
-int
-main ()
-{
-mbstate_t teststate;
-  ;
-  return 0;
-}
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITE 1
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  have_mbstate_t=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-have_mbstate_t=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
-echo "${ECHO_T}$have_mbstate_t" >&6
-  if test x"$have_mbstate_t" = xyes; then
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_MBSTATE_T 1
+#define HAVE_FREXPF 1
 _ACEOF
 
-  fi
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOTF 1
+_ACEOF
 
-  # Sanity check for existence of ISO C99 headers for extended encoding.
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINF 1
+_ACEOF
 
-for ac_header in wchar.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINFF 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNAN 1
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNANF 1
+_ACEOF
 
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    if test x"long_double_math_on_this_cpu" = x"yes"; then
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEL 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <$ac_header>
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINFL 1
 _ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNANL 1
+_ACEOF
 
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
+    fi
     ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+  *-netware)
 
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
- ac_has_wchar_h=yes
-else
-  ac_has_wchar_h=no
-fi
 
-done
 
 
-for ac_header in wctype.h
+
+
+
+
+for ac_header in nan.h ieeefp.h sys/isa_defs.h sys/machine.h \
+      sys/types.h locale.h float.h inttypes.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -83773,95 +88961,159 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
- ac_has_wctype_h=yes
-else
-  ac_has_wctype_h=no
+
 fi
 
 done
 
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
 
-  # Only continue checking if the ISO C99 headers exist and support is on.
-  if test x"$ac_has_wchar_h" = xyes &&
-     test x"$ac_has_wctype_h" = xyes &&
-     test x"$enable_c_mbchar" != xno; then
 
-    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
-    # numeric_limits can instantiate type_traits<wchar_t>
-    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
-echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+
+  ldver=`$LD --version 2>/dev/null | head -1 | \
+         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
+
+  glibcxx_gnu_ld_version=`echo $ldver | \
+         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+
+  # Set --gc-sections.
+  if test "$with_gnu_ld" = "notbroken"; then
+    # GNU ld it is!  Joy and bunny rabbits!
+
+    # All these tests are for C++; save the language and the compiler flags.
+    # Need to do this so that g++ won't try to link in libstdc++
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-x c++  -Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    # XXX This test is broken at the moment, as symbols required for linking
+    # are now in libsupc++ (not built yet).  In addition, this test has
+    # cored on solaris in the past.  In addition, --gc-sections doesn't
+    # really work at the moment (keeps on discarding used sections, first
+    # .eh_frame and now some of the glibc sections for iconv).
+    # Bzzzzt.  Thanks for playing, maybe next time.
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test "$cross_compiling" = yes; then
+  ac_sectionLDflags=yes
+else
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <wchar.h>
-int
-main ()
-{
-int i = WCHAR_MIN; int j = WCHAR_MAX;
-  ;
-  return 0;
-}
+
+     int main(void)
+     {
+       try { throw 1; }
+       catch (...) { };
+       return 0;
+     }
+
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  has_wchar_minmax=yes
+  ac_sectionLDflags=yes
 else
-  echo "$as_me: failed program was:" >&5
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-has_wchar_minmax=no
+( exit $ac_status )
+ac_sectionLDflags=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
-echo "${ECHO_T}$has_wchar_minmax" >&6
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+    if test "$ac_sectionLDflags" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
+echo "${ECHO_T}$ac_sectionLDflags" >&6
+  fi
 
-    # Test wchar.h for WEOF, which is what we use to determine whether
-    # to specialize for char_traits<wchar_t> or not.
-    echo "$as_me:$LINENO: checking for WEOF" >&5
-echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
+
+
+
+
+
+
+echo "$as_me:$LINENO: checking for main in -lm" >&5
+echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_main+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-      #include <wchar.h>
-      #include <stddef.h>
+
 int
 main ()
 {
-wint_t i = WEOF;
+main ();
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -83875,32 +89127,36 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  has_weof=yes
+  ac_cv_lib_m_main=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-has_weof=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_weof" >&5
-echo "${ECHO_T}$has_weof" >&6
-
-    # Tests for wide character functions used in char_traits<wchar_t>.
-    ac_wfuncs=yes
-
-
+ac_cv_lib_m_main=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
+echo "${ECHO_T}$ac_cv_lib_m_main" >&6
+if test $ac_cv_lib_m_main = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
 
+  LIBS="-lm $LIBS"
 
+fi
 
 
-for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
+for ac_func in copysignf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -84004,64 +89260,13 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 _ACEOF
 
 else
-  ac_wfuncs=no
+  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
 
-    # Checks for names injected into std:: by the c_std headers.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
 
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
-    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
-    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
-    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
-    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
-    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
+for ac_func in __signbit
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -84165,20 +89370,13 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 _ACEOF
 
 else
-  ac_wfuncs=no
+  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
 
-    # Checks for wide character functions that are not required
-    # for basic wchar_t support.  Don't disable support if they are missing.
-    # Injection of these is wrapped with guard macros.
-
 
-
-
-
-for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+for ac_func in __signbitf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -84281,323 +89479,23 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-fi
-done
-
-
-    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
-echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
-    if test x"$has_weof" = xyes &&
-       test x"$has_wchar_minmax" = xyes &&
-       test x"$ac_wfuncs" = xyes;
-    then
-      ac_isoC99_wchar_t=yes
-    else
-      ac_isoC99_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
-echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
-
-    # Use iconv for wchar_t to char conversions. As such, check for
-    # X/Open Portability Guide, version 2 features (XPG2).
-    if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking iconv.h usability" >&5
-echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-#include <iconv.h>
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_header_compiler=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking iconv.h presence" >&5
-echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <iconv.h>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_header_iconv_h=$ac_header_preproc
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
-
-fi
-if test $ac_cv_header_iconv_h = yes; then
-  ac_has_iconv_h=yes
-else
-  ac_has_iconv_h=no
-fi
-
-
-    if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
-else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking langinfo.h usability" >&5
-echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-$ac_includes_default
-#include <langinfo.h>
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_header_compiler=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_header_compiler=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking langinfo.h presence" >&5
-echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <langinfo.h>
-_ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_c_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_cv_header_langinfo_h=$ac_header_preproc
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
-
-fi
-if test $ac_cv_header_langinfo_h = yes; then
-  ac_has_langinfo_h=yes
 else
-  ac_has_langinfo_h=no
+  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
+done
 
 
+          if test x$ac_cv_func_copysignl = x"yes"; then
 
-    # Check for existence of libiconv.a providing XPG2 wchar_t support.
-    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
-echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
-if test "${ac_cv_lib_iconv_iconv+set}" = set; then
+for ac_func in __signbitl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-liconv  $LIBS"
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -84608,18 +89506,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
+{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char iconv ();
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-iconv ();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -84646,98 +89573,59 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_iconv_iconv=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_iconv_iconv=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
-echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
-if test $ac_cv_lib_iconv_iconv = yes; then
-  LIBICONV="-liconv"
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-    ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIBICONV"
-
-
-
-
-
-
-for ac_func in iconv_open iconv_close iconv nl_langinfo
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
+  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
+done
 
-#undef $ac_func
+  fi
 
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+  # Used in libmath/Makefile.am.
+  if test -n "$LIBMATHOBJS"; then
+    need_libmath=yes
+  fi
 
+
+
+  # Test wchar.h for mbstate_t, which is needed for char_traits and
+  # others even if wchar_t support is not on.
+  echo "$as_me:$LINENO: checking for mbstate_t" >&5
+echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <wchar.h>
 int
 main ()
 {
-return f != $ac_func;
+mbstate_t teststate;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -84751,84 +89639,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  have_mbstate_t=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
- ac_XPG2funcs=yes
-else
-  ac_XPG2funcs=no
+have_mbstate_t=no
 fi
-done
-
-
-    LIBS="$ac_save_LIBS"
-
-    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
-echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
-    if test x"$ac_has_iconv_h" = xyes &&
-       test x"$ac_has_langinfo_h" = xyes &&
-       test x"$ac_XPG2funcs" = xyes;
-    then
-      ac_XPG2_wchar_t=yes
-    else
-      ac_XPG2_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
-echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
-
-    # At the moment, only enable wchar_t specializations if all the
-    # above support is present.
-    if test x"$ac_isoC99_wchar_t" = xyes &&
-       test x"$ac_XPG2_wchar_t" = xyes;
-    then
-      cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_WCHAR_T 1
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
+echo "${ECHO_T}$have_mbstate_t" >&6
+  if test x"$have_mbstate_t" = xyes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MBSTATE_T 1
 _ACEOF
 
-      enable_wchar_t=yes
-    fi
   fi
-  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
-echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
-  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
-echo "${ECHO_T}$enable_wchar_t" >&6
-
-    ;;
-  *-netbsd*)
-
-
-
-
-
-
-
-
-
-
 
+  # Sanity check for existence of ISO C99 headers for extended encoding.
 
-for ac_header in nan.h ieeefp.h endian.h sys/isa_defs.h \
-      machine/endian.h machine/param.h sys/machine.h sys/types.h \
-      fp.h locale.h float.h inttypes.h
+for ac_header in wchar.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -84972,159 +89808,193 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_has_wchar_h=yes
+else
+  ac_has_wchar_h=no
 fi
 
 done
 
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
-
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-
-  ldver=`$LD --version 2>/dev/null | head -1 | \
-         sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
-
-  glibcxx_gnu_ld_version=`echo $ldver | \
-         $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-
-  # Set --gc-sections.
-  if test "$with_gnu_ld" = "notbroken"; then
-    # GNU ld it is!  Joy and bunny rabbits!
-
-    # All these tests are for C++; save the language and the compiler flags.
-    # Need to do this so that g++ won't try to link in libstdc++
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-x c++  -Wl,--gc-sections'
 
-    # Check for -Wl,--gc-sections
-    # XXX This test is broken at the moment, as symbols required for linking
-    # are now in libsupc++ (not built yet).  In addition, this test has
-    # cored on solaris in the past.  In addition, --gc-sections doesn't
-    # really work at the moment (keeps on discarding used sections, first
-    # .eh_frame and now some of the glibc sections for iconv).
-    # Bzzzzt.  Thanks for playing, maybe next time.
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test "$cross_compiling" = yes; then
-  ac_sectionLDflags=yes
+for ac_header in wctype.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  cat >conftest.$ac_ext <<_ACEOF
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-     int main(void)
-     {
-       try { throw 1; }
-       catch (...) { };
-       return 0;
-     }
-
+$ac_includes_default
+#include <$ac_header>
 _ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_sectionLDflags=yes
+  ac_header_compiler=yes
 else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
+  echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-( exit $ac_status )
-ac_sectionLDflags=no
-fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+ac_header_compiler=no
 fi
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-    if test "$ac_sectionLDflags" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_sectionLDflags" >&5
-echo "${ECHO_T}$ac_sectionLDflags" >&6
-  fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
 
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+# Is the header present?
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <$ac_header>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
   fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
 
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ----------------------------------------- ##
+## Report this to the package-unused lists.  ##
+## ----------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+ ac_has_wctype_h=yes
+else
+  ac_has_wctype_h=no
+fi
 
+done
 
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  # Only continue checking if the ISO C99 headers exist and support is on.
+  if test x"$ac_has_wchar_h" = xyes &&
+     test x"$ac_has_wctype_h" = xyes &&
+     test x"$enable_c_mbchar" != xno; then
+
+    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
+    # numeric_limits can instantiate type_traits<wchar_t>
+    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
+echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-
+#include <wchar.h>
 int
 main ()
 {
-main ();
+int i = WCHAR_MIN; int j = WCHAR_MAX;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -85138,102 +90008,47 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  has_wchar_minmax=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
-
-  LIBS="-lm $LIBS"
-
+has_wchar_minmax=no
 fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
+echo "${ECHO_T}$has_wchar_minmax" >&6
 
-
-for ac_func in copysignf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+    # Test wchar.h for WEOF, which is what we use to determine whether
+    # to specialize for char_traits<wchar_t> or not.
+    echo "$as_me:$LINENO: checking for WEOF" >&5
+echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
 
+      #include <wchar.h>
+      #include <stddef.h>
 int
 main ()
 {
-return f != $ac_func;
+wint_t i = WEOF;
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -85247,37 +90062,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
+	 { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  has_weof=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+has_weof=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    echo "$as_me:$LINENO: result: $has_weof" >&5
+echo "${ECHO_T}$has_weof" >&6
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
-fi
-done
+    # Tests for wide character functions used in char_traits<wchar_t>.
+    ac_wfuncs=yes
 
 
 
-for ac_func in __signbit
+
+
+
+for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -85368,26 +90178,77 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+else
+  ac_wfuncs=no
+fi
+done
+
+
+    # Checks for names injected into std:: by the c_std headers.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
-fi
-done
 
 
 
-for ac_func in __signbitf
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
+    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
+    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
+    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
+    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
+    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -85491,14 +90352,20 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 _ACEOF
 
 else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
+  ac_wfuncs=no
 fi
 done
 
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+    # Checks for wide character functions that are not required
+    # for basic wchar_t support.  Don't disable support if they are missing.
+    # Injection of these is wrapped with guard macros.
 
-for ac_func in __signbitl
+
+
+
+
+for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -85601,95 +90468,37 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
-  fi
-
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
-
-
 
-  # Test wchar.h for mbstate_t, which is needed for char_traits and
-  # others even if wchar_t support is not on.
-  echo "$as_me:$LINENO: checking for mbstate_t" >&5
-echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <wchar.h>
-int
-main ()
-{
-mbstate_t teststate;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  have_mbstate_t=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-have_mbstate_t=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  echo "$as_me:$LINENO: result: $have_mbstate_t" >&5
-echo "${ECHO_T}$have_mbstate_t" >&6
-  if test x"$have_mbstate_t" = xyes; then
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MBSTATE_T 1
-_ACEOF
-
-  fi
-
-  # Sanity check for existence of ISO C99 headers for extended encoding.
+    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
+echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
+    if test x"$has_weof" = xyes &&
+       test x"$has_wchar_minmax" = xyes &&
+       test x"$ac_wfuncs" = xyes;
+    then
+      ac_isoC99_wchar_t=yes
+    else
+      ac_isoC99_wchar_t=no
+    fi
+    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
+echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
 
-for ac_header in wchar.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+    # Use iconv for wchar_t to char conversions. As such, check for
+    # X/Open Portability Guide, version 2 features (XPG2).
+    if test "${ac_cv_header_iconv_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking iconv.h usability" >&5
+echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -85697,7 +90506,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <$ac_header>
+#include <iconv.h>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -85733,15 +90542,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking iconv.h presence" >&5
+echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <$ac_header>
+#include <iconv.h>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -85775,25 +90584,25 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
@@ -85804,44 +90613,36 @@ _ASBOX
       sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+echo "$as_me:$LINENO: checking for iconv.h" >&5
+echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
+if test "${ac_cv_header_iconv_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  eval "$as_ac_Header=\$ac_header_preproc"
+  ac_cv_header_iconv_h=$ac_header_preproc
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
+echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
 
 fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
- ac_has_wchar_h=yes
+if test $ac_cv_header_iconv_h = yes; then
+  ac_has_iconv_h=yes
 else
-  ac_has_wchar_h=no
+  ac_has_iconv_h=no
 fi
 
-done
-
 
-for ac_header in wctype.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+    if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking langinfo.h usability" >&5
+echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -85849,7 +90650,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <$ac_header>
+#include <langinfo.h>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -85885,15 +90686,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking langinfo.h presence" >&5
+echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <$ac_header>
+#include <langinfo.h>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -85927,347 +90728,63 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
 ## Report this to the package-unused lists.  ##
 ## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-
-fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
- ac_has_wctype_h=yes
-else
-  ac_has_wctype_h=no
-fi
-
-done
-
-
-  # Only continue checking if the ISO C99 headers exist and support is on.
-  if test x"$ac_has_wchar_h" = xyes &&
-     test x"$ac_has_wctype_h" = xyes &&
-     test x"$enable_c_mbchar" != xno; then
-
-    # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
-    # numeric_limits can instantiate type_traits<wchar_t>
-    echo "$as_me:$LINENO: checking for WCHAR_MIN and WCHAR_MAX" >&5
-echo $ECHO_N "checking for WCHAR_MIN and WCHAR_MAX... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <wchar.h>
-int
-main ()
-{
-int i = WCHAR_MIN; int j = WCHAR_MAX;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  has_wchar_minmax=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-has_wchar_minmax=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_wchar_minmax" >&5
-echo "${ECHO_T}$has_wchar_minmax" >&6
-
-    # Test wchar.h for WEOF, which is what we use to determine whether
-    # to specialize for char_traits<wchar_t> or not.
-    echo "$as_me:$LINENO: checking for WEOF" >&5
-echo $ECHO_N "checking for WEOF... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-      #include <wchar.h>
-      #include <stddef.h>
-int
-main ()
-{
-wint_t i = WEOF;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  has_weof=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-has_weof=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    echo "$as_me:$LINENO: result: $has_weof" >&5
-echo "${ECHO_T}$has_weof" >&6
-
-    # Tests for wide character functions used in char_traits<wchar_t>.
-    ac_wfuncs=yes
-
-
-
-
-
-
-for ac_func in wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for langinfo.h" >&5
+echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
+if test "${ac_cv_header_langinfo_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+  ac_cv_header_langinfo_h=$ac_header_preproc
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
+echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
 
+fi
+if test $ac_cv_header_langinfo_h = yes; then
+  ac_has_langinfo_h=yes
 else
-  ac_wfuncs=no
+  ac_has_langinfo_h=no
 fi
-done
-
-
-    # Checks for names injected into std:: by the c_std headers.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
 
 
 
-
-
-
-
-
-
-
-
-
-
-
-
-
-for ac_func in btowc wctob fgetwc fgetws fputwc fputws fwide \
-    fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
-    vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
-    mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
-    wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
-    wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+    # Check for existence of libiconv.a providing XPG2 wchar_t support.
+    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
+echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
+if test "${ac_cv_lib_iconv_iconv+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-liconv  $LIBS"
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -86278,47 +90795,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
-{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+char iconv ();
 int
 main ()
 {
-return f != $ac_func;
+iconv ();
   ;
   return 0;
 }
@@ -86345,38 +90833,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_cv_lib_iconv_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_cv_lib_iconv_iconv=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-else
-  ac_wfuncs=no
+echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
+echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
+if test $ac_cv_lib_iconv_iconv = yes; then
+  LIBICONV="-liconv"
 fi
-done
 
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBICONV"
 
-    # Checks for wide character functions that are not required
-    # for basic wchar_t support.  Don't disable support if they are missing.
-    # Injection of these is wrapped with guard macros.
 
 
 
 
 
-for ac_func in vfwscanf vswscanf vwscanf wcstof iswblank
+for ac_func in iconv_open iconv_close iconv nl_langinfo
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -86478,38 +90960,64 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
-
+ ac_XPG2funcs=yes
+else
+  ac_XPG2funcs=no
 fi
 done
 
 
-    echo "$as_me:$LINENO: checking for ISO C99 wchar_t support" >&5
-echo $ECHO_N "checking for ISO C99 wchar_t support... $ECHO_C" >&6
-    if test x"$has_weof" = xyes &&
-       test x"$has_wchar_minmax" = xyes &&
-       test x"$ac_wfuncs" = xyes;
+    LIBS="$ac_save_LIBS"
+
+    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
+echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
+    if test x"$ac_has_iconv_h" = xyes &&
+       test x"$ac_has_langinfo_h" = xyes &&
+       test x"$ac_XPG2funcs" = xyes;
     then
-      ac_isoC99_wchar_t=yes
+      ac_XPG2_wchar_t=yes
     else
-      ac_isoC99_wchar_t=no
+      ac_XPG2_wchar_t=no
     fi
-    echo "$as_me:$LINENO: result: $ac_isoC99_wchar_t" >&5
-echo "${ECHO_T}$ac_isoC99_wchar_t" >&6
+    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
+echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
 
-    # Use iconv for wchar_t to char conversions. As such, check for
-    # X/Open Portability Guide, version 2 features (XPG2).
-    if test "${ac_cv_header_iconv_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
+    # At the moment, only enable wchar_t specializations if all the
+    # above support is present.
+    if test x"$ac_isoC99_wchar_t" = xyes &&
+       test x"$ac_XPG2_wchar_t" = xyes;
+    then
+      cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
+_ACEOF
+
+      enable_wchar_t=yes
+    fi
+  fi
+  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
+echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
+  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
+echo "${ECHO_T}$enable_wchar_t" >&6
+
+
+    # For showmanyc_helper().
+
+
+for ac_header in sys/ioctl.h sys/filio.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking iconv.h usability" >&5
-echo $ECHO_N "checking iconv.h usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -86517,7 +91025,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <iconv.h>
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -86553,15 +91061,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking iconv.h presence" >&5
-echo $ECHO_N "checking iconv.h presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <iconv.h>
+#include <$ac_header>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -86595,25 +91103,25 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: iconv.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: iconv.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: iconv.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: iconv.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: iconv.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: iconv.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: iconv.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: iconv.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: iconv.h: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
@@ -86624,36 +91132,245 @@ _ASBOX
       sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
-echo "$as_me:$LINENO: checking for iconv.h" >&5
-echo $ECHO_N "checking for iconv.h... $ECHO_C" >&6
-if test "${ac_cv_header_iconv_h+set}" = set; then
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_cv_header_iconv_h=$ac_header_preproc
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_iconv_h" >&5
-echo "${ECHO_T}$ac_cv_header_iconv_h" >&6
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
 fi
-if test $ac_cv_header_iconv_h = yes; then
-  ac_has_iconv_h=yes
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+  if test "${glibcxx_cv_POLL+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_has_iconv_h=no
+
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <poll.h>
+int
+main ()
+{
+struct pollfd pfd[1];
+       pfd[0].events = POLLIN;
+       poll(pfd, 1, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_POLL=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_POLL=no
 fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
+fi
 
-    if test "${ac_cv_header_langinfo_h+set}" = set; then
-  echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
+  if test $glibcxx_cv_POLL = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_POLL 1
+_ACEOF
+
+  fi
+
+
+  if test "${glibcxx_cv_S_ISREG+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
 fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat buffer;
+       fstat(0, &buffer);
+       S_ISREG(buffer.st_mode);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_S_ISREG=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_S_ISREG=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+fi
+
+  if test "${glibcxx_cv_S_IFREG+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat buffer;
+       fstat(0, &buffer);
+       S_IFREG & buffer.st_mode;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_S_IFREG=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_S_IFREG=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+fi
+
+  if test $glibcxx_cv_S_ISREG = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_ISREG 1
+_ACEOF
+
+  elif test $glibcxx_cv_S_IFREG = yes; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_S_IFREG 1
+_ACEOF
+
+  fi
+
+
+    # For xsputn_2().
+
+for ac_header in sys/uio.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
   # Is the header compilable?
-echo "$as_me:$LINENO: checking langinfo.h usability" >&5
-echo $ECHO_N "checking langinfo.h usability... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header usability" >&5
+echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -86661,7 +91378,7 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 $ac_includes_default
-#include <langinfo.h>
+#include <$ac_header>
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -86697,15 +91414,15 @@ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
 echo "${ECHO_T}$ac_header_compiler" >&6
 
 # Is the header present?
-echo "$as_me:$LINENO: checking langinfo.h presence" >&5
-echo $ECHO_N "checking langinfo.h presence... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking $ac_header presence" >&5
+echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <langinfo.h>
+#include <$ac_header>
 _ACEOF
 if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
   (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
@@ -86739,25 +91456,25 @@ echo "${ECHO_T}$ac_header_preproc" >&6
 # So?  What about this header?
 case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
   yes:no: )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: langinfo.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the compiler's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
     ac_header_preproc=yes
     ;;
   no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: present but cannot be compiled" >&5
-echo "$as_me: WARNING: langinfo.h: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: langinfo.h:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: langinfo.h: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: langinfo.h:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: langinfo.h: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: langinfo.h: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: langinfo.h: in the future, the compiler will take precedence" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
     (
       cat <<\_ASBOX
 ## ----------------------------------------- ##
@@ -86768,116 +91485,32 @@ _ASBOX
       sed "s/^/$as_me: WARNING:     /" >&2
     ;;
 esac
-echo "$as_me:$LINENO: checking for langinfo.h" >&5
-echo $ECHO_N "checking for langinfo.h... $ECHO_C" >&6
-if test "${ac_cv_header_langinfo_h+set}" = set; then
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_cv_header_langinfo_h=$ac_header_preproc
-fi
-echo "$as_me:$LINENO: result: $ac_cv_header_langinfo_h" >&5
-echo "${ECHO_T}$ac_cv_header_langinfo_h" >&6
-
-fi
-if test $ac_cv_header_langinfo_h = yes; then
-  ac_has_langinfo_h=yes
-else
-  ac_has_langinfo_h=no
+  eval "$as_ac_Header=\$ac_header_preproc"
 fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 
-
-
-    # Check for existence of libiconv.a providing XPG2 wchar_t support.
-    echo "$as_me:$LINENO: checking for iconv in -liconv" >&5
-echo $ECHO_N "checking for iconv in -liconv... $ECHO_C" >&6
-if test "${ac_cv_lib_iconv_iconv+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-liconv  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
 fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char iconv ();
-int
-main ()
-{
-iconv ();
-  ;
-  return 0;
-}
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_lib_iconv_iconv=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_iconv_iconv=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_iconv_iconv" >&5
-echo "${ECHO_T}$ac_cv_lib_iconv_iconv" >&6
-if test $ac_cv_lib_iconv_iconv = yes; then
-  LIBICONV="-liconv"
-fi
-
-    ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIBICONV"
-
-
-
 
+done
 
 
-for ac_func in iconv_open iconv_close iconv nl_langinfo
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  if test "${glibcxx_cv_WRITEV+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -86888,47 +91521,12 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <sys/uio.h>
 int
 main ()
 {
-return f != $ac_func;
+struct iovec iov[2];
+       writev(0, iov, 0);
   ;
   return 0;
 }
@@ -86955,115 +91553,25 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_WRITEV=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+glibcxx_cv_WRITEV=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
- ac_XPG2funcs=yes
-else
-  ac_XPG2funcs=no
-fi
-done
-
-
-    LIBS="$ac_save_LIBS"
-
-    echo "$as_me:$LINENO: checking for XPG2 wchar_t support" >&5
-echo $ECHO_N "checking for XPG2 wchar_t support... $ECHO_C" >&6
-    if test x"$ac_has_iconv_h" = xyes &&
-       test x"$ac_has_langinfo_h" = xyes &&
-       test x"$ac_XPG2funcs" = xyes;
-    then
-      ac_XPG2_wchar_t=yes
-    else
-      ac_XPG2_wchar_t=no
-    fi
-    echo "$as_me:$LINENO: result: $ac_XPG2_wchar_t" >&5
-echo "${ECHO_T}$ac_XPG2_wchar_t" >&6
-
-    # At the moment, only enable wchar_t specializations if all the
-    # above support is present.
-    if test x"$ac_isoC99_wchar_t" = xyes &&
-       test x"$ac_XPG2_wchar_t" = xyes;
-    then
-      cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_WCHAR_T 1
-_ACEOF
-
-      enable_wchar_t=yes
-    fi
-  fi
-  echo "$as_me:$LINENO: checking for enabled wchar_t specializations" >&5
-echo $ECHO_N "checking for enabled wchar_t specializations... $ECHO_C" >&6
-  echo "$as_me:$LINENO: result: $enable_wchar_t" >&5
-echo "${ECHO_T}$enable_wchar_t" >&6
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOTF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINFF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
+fi
 
+  if test $glibcxx_cv_WRITEV = yes; then
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANF 1
-_ACEOF
-
-    if test x"long_double_math_on_this_cpu" = x"yes"; then
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINFL 1
+#define HAVE_WRITEV 1
 _ACEOF
 
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANL 1
-_ACEOF
+  fi
 
-    fi
     ;;
   *-qnx6.1* | *-qnx6.2*)
     SECTION_FLAGS='-ffunction-sections -fdata-sections'
@@ -90926,14 +95434,19 @@ _ACEOF
 
        ;;
     esac
-    cat >>confdefs.h <<\_ACEOF
+    case "$target" in
+      *-*-solaris2.10)
+      # These two C99 functions are present only in Solaris >= 10
+      cat >>confdefs.h <<\_ACEOF
 #define HAVE_STRTOF 1
 _ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
+      cat >>confdefs.h <<\_ACEOF
 #define HAVE_STRTOLD 1
 _ACEOF
 
+     ;;
+    esac
     cat >>confdefs.h <<\_ACEOF
 #define HAVE_MMAP 1
 _ACEOF
@@ -94548,6 +99061,7 @@ done
 
 
 
+
 # Propagate the target-specific source directories through the build chain.
 ATOMICITY_SRCDIR=config/${atomicity_dir}
 ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
@@ -94653,6 +99167,17 @@ fi
 
 
 
+if test $enable_thread = yes; then
+  GLIBCXX_TEST_THREAD_TRUE=
+  GLIBCXX_TEST_THREAD_FALSE='#'
+else
+  GLIBCXX_TEST_THREAD_TRUE='#'
+  GLIBCXX_TEST_THREAD_FALSE=
+fi
+
+
+
+
 if test $enable_abi_check = yes; then
   GLIBCXX_TEST_ABI_TRUE=
   GLIBCXX_TEST_ABI_FALSE='#'
@@ -95021,6 +99546,13 @@ echo "$as_me: error: conditional \"GLIBCXX_TEST_WCHAR_T\" was never defined.
 Usually this means the macro was only invoked conditionally." >&2;}
    { (exit 1); exit 1; }; }
 fi
+if test -z "${GLIBCXX_TEST_THREAD_TRUE}" && test -z "${GLIBCXX_TEST_THREAD_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"GLIBCXX_TEST_THREAD\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"GLIBCXX_TEST_THREAD\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 if test -z "${GLIBCXX_TEST_ABI_TRUE}" && test -z "${GLIBCXX_TEST_ABI_FALSE}"; then
   { { echo "$as_me:$LINENO: error: conditional \"GLIBCXX_TEST_ABI\" was never defined.
 Usually this means the macro was only invoked conditionally." >&5
@@ -95609,7 +100141,6 @@ s,@AUTOCONF@,$AUTOCONF,;t t
 s,@AUTOMAKE@,$AUTOMAKE,;t t
 s,@AUTOHEADER@,$AUTOHEADER,;t t
 s,@MAKEINFO@,$MAKEINFO,;t t
-s,@AMTAR@,$AMTAR,;t t
 s,@install_sh@,$install_sh,;t t
 s,@STRIP@,$STRIP,;t t
 s,@ac_ct_STRIP@,$ac_ct_STRIP,;t t
@@ -95618,6 +100149,9 @@ s,@mkdir_p@,$mkdir_p,;t t
 s,@AWK@,$AWK,;t t
 s,@SET_MAKE@,$SET_MAKE,;t t
 s,@am__leading_dot@,$am__leading_dot,;t t
+s,@AMTAR@,$AMTAR,;t t
+s,@am__tar@,$am__tar,;t t
+s,@am__untar@,$am__untar,;t t
 s,@glibcxx_builddir@,$glibcxx_builddir,;t t
 s,@glibcxx_srcdir@,$glibcxx_srcdir,;t t
 s,@toplevel_srcdir@,$toplevel_srcdir,;t t
@@ -95660,7 +100194,6 @@ s,@glibcxx_POFILES@,$glibcxx_POFILES,;t t
 s,@glibcxx_localedir@,$glibcxx_localedir,;t t
 s,@USE_NLS@,$USE_NLS,;t t
 s,@CLOCALE_H@,$CLOCALE_H,;t t
-s,@CCODECVT_H@,$CCODECVT_H,;t t
 s,@CMESSAGES_H@,$CMESSAGES_H,;t t
 s,@CCODECVT_CC@,$CCODECVT_CC,;t t
 s,@CCOLLATE_CC@,$CCOLLATE_CC,;t t
@@ -95699,6 +100232,8 @@ s,@GLIBCXX_BUILD_VERSIONED_SHLIB_FALSE@,$GLIBCXX_BUILD_VERSIONED_SHLIB_FALSE,;t
 s,@baseline_dir@,$baseline_dir,;t t
 s,@GLIBCXX_TEST_WCHAR_T_TRUE@,$GLIBCXX_TEST_WCHAR_T_TRUE,;t t
 s,@GLIBCXX_TEST_WCHAR_T_FALSE@,$GLIBCXX_TEST_WCHAR_T_FALSE,;t t
+s,@GLIBCXX_TEST_THREAD_TRUE@,$GLIBCXX_TEST_THREAD_TRUE,;t t
+s,@GLIBCXX_TEST_THREAD_FALSE@,$GLIBCXX_TEST_THREAD_FALSE,;t t
 s,@GLIBCXX_TEST_ABI_TRUE@,$GLIBCXX_TEST_ABI_TRUE,;t t
 s,@GLIBCXX_TEST_ABI_FALSE@,$GLIBCXX_TEST_ABI_FALSE,;t t
 s,@ATOMICITY_SRCDIR@,$ATOMICITY_SRCDIR,;t t