dnl
-dnl Initialize configure bits.
+dnl Initialize basic configure bits, set toplevel_srcdir for Makefiles.
dnl
-dnl GLIBCPP_CONFIGURE
-AC_DEFUN(GLIBCPP_CONFIGURE, [
- dnl Default to --enable-multilib
+dnl GLIBCPP_TOPREL_CONFIGURE
+AC_DEFUN(GLIBCPP_TOPREL_CONFIGURE, [
+ dnl Default to --enable-multilib (this is also passed by default
+ dnl from the ubercommon-top-level configure)
AC_ARG_ENABLE(multilib,
[ --enable-multilib build hella library versions (default)],
[case "${enableval}" in
*) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
esac], [multilib=yes])dnl
-# When building with srcdir == objdir, links to the source files will
-# be created in directories within the target_subdir. We have to
-# adjust toplevel_srcdir accordingly, so that configure finds
-# install-sh and other auxiliary files that live in the top-level
-# source directory.
-if test "${srcdir}" = "."; then
- if test -z "${with_target_subdir}"; then
- toprel=".."
- else
- if test "${with_target_subdir}" != "."; then
- toprel="${with_multisrctop}../.."
+ # When building with srcdir == objdir, links to the source files will
+ # be created in directories within the target_subdir. We have to
+ # adjust toplevel_srcdir accordingly, so that configure finds
+ # install-sh and other auxiliary files that live in the top-level
+ # source directory.
+ if test "${srcdir}" = "."; then
+ if test -z "${with_target_subdir}"; then
+ toprel=".."
else
- toprel="${with_multisrctop}.."
+ if test "${with_target_subdir}" != "."; then
+ toprel="${with_multisrctop}../.."
+ else
+ toprel="${with_multisrctop}.."
+ fi
fi
+ else
+ toprel=".."
fi
-else
- toprel=".."
-fi
-AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
-toplevel_srcdir=\${top_srcdir}/$toprel
-AC_SUBST(toplevel_srcdir)
-
-# Export build and source directories.
-# These need to be absolute paths, yet at the same time need to
-# canonicalize only relative paths, because then amd will not unmount
-# drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
-glibcpp_builddir=`pwd`
-case $srcdir in
-[\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
-*) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
-esac
-AC_SUBST(glibcpp_builddir)
-AC_SUBST(glibcpp_srcdir)
-
-dnl This is here just to satisfy automake.
-ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
-
-# Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.50+, can also
-# be 'cp -p' if linking isn't available.
-#ac_cv_prog_LN_S='cp -p'
-AC_PROG_LN_S
+ AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
+ toplevel_srcdir=\${top_srcdir}/$toprel
+ AC_SUBST(toplevel_srcdir)
+])
-# We use these options to decide which functions to include.
-AC_ARG_WITH(target-subdir,
-[ --with-target-subdir=SUBDIR
- configuring in a subdirectory])
-AC_ARG_WITH(cross-host,
-[ --with-cross-host=HOST configuring with a cross compiler])
+dnl
+dnl Initialize the rest of the library configury.
+dnl
+dnl GLIBCPP_CONFIGURE
+AC_DEFUN(GLIBCPP_CONFIGURE, [
+ # Export build and source directories.
+ # These need to be absolute paths, yet at the same time need to
+ # canonicalize only relative paths, because then amd will not unmount
+ # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
+ glibcpp_builddir=`${PWDCMD-pwd}`
+ case $srcdir in
+ [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
+ *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
+ esac
+ AC_SUBST(glibcpp_builddir)
+ AC_SUBST(glibcpp_srcdir)
+
+ dnl This is here just to satisfy automake.
+ ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
+
+ AC_PROG_AWK
+ # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also
+ # be 'cp -p' if linking isn't available. Uncomment the next line to
+ # force a particular method.
+ #ac_cv_prog_LN_S='cp -p'
+ AC_PROG_LN_S
+
+ # We use these options to decide which functions to include.
+ AC_ARG_WITH(target-subdir,
+ [ --with-target-subdir=SUBDIR
+ configuring in a subdirectory])
+ AC_ARG_WITH(cross-host,
+ [ --with-cross-host=HOST configuring with a cross compiler])
glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
AC_SUBST(glibcpp_basedir)
ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
-# AC_PROG_CC
-
-# FIXME: We temporarily define our own version of AC_PROG_CC. This is
-# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
-# are probably using a cross compiler, which will not be able to fully
-# link an executable. This should really be fixed in autoconf
-# itself.
-
-AC_DEFUN(LIB_AC_PROG_CC,
-[AC_BEFORE([$0], [AC_PROG_CPP])dnl
-dnl Fool anybody using AC_PROG_CC.
-AC_PROVIDE([AC_PROG_CC])
-AC_CHECK_PROG(CC, gcc, gcc)
-if test -z "$CC"; then
- AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
- test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
-fi
+ # AC_PROG_CC
+ # FIXME: We temporarily define our own version of AC_PROG_CC. This is
+ # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
+ # are probably using a cross compiler, which will not be able to fully
+ # link an executable. This is addressed in later versions of autoconf.
+
+ AC_DEFUN(LIB_AC_PROG_CC,
+ [AC_BEFORE([$0], [AC_PROG_CPP])dnl
+ dnl Fool anybody using AC_PROG_CC.
+ AC_PROVIDE([AC_PROG_CC])
+ AC_CHECK_PROG(CC, gcc, gcc)
+ if test -z "$CC"; then
+ AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
+ test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
+ fi
-AC_PROG_CC_GNU
+ AC_PROG_CC_GNU
-if test $ac_cv_prog_gcc = yes; then
- GCC=yes
-dnl Check whether -g works, even if CFLAGS is set, in case the package
-dnl plays around with CFLAGS (such as to build both debugging and
-dnl normal versions of a library), tasteless as that idea is.
- ac_test_CFLAGS="${CFLAGS+set}"
- ac_save_CFLAGS="$CFLAGS"
- CFLAGS=
- AC_PROG_CC_G
- if test "$ac_test_CFLAGS" = set; then
- CFLAGS="$ac_save_CFLAGS"
- elif test $ac_cv_prog_cc_g = yes; then
- CFLAGS="-g -O2"
+ if test $ac_cv_prog_gcc = yes; then
+ GCC=yes
+ dnl Check whether -g works, even if CFLAGS is set, in case the package
+ dnl plays around with CFLAGS (such as to build both debugging and
+ dnl normal versions of a library), tasteless as that idea is.
+ ac_test_CFLAGS="${CFLAGS+set}"
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS=
+ AC_PROG_CC_G
+ if test "$ac_test_CFLAGS" = set; then
+ CFLAGS="$ac_save_CFLAGS"
+ elif test $ac_cv_prog_cc_g = yes; then
+ CFLAGS="-g -O2"
+ else
+ CFLAGS="-O2"
+ fi
else
- CFLAGS="-O2"
+ GCC=
+ test "${CFLAGS+set}" = set || CFLAGS="-g"
fi
-else
- GCC=
- test "${CFLAGS+set}" = set || CFLAGS="-g"
-fi
-])
+ ])
-LIB_AC_PROG_CC
-
-# Can't just call these here as g++ requires libstc++ to be built....
-# AC_PROG_CXX
-
-# Likewise for AC_PROG_CXX.
-AC_DEFUN(LIB_AC_PROG_CXX,
-[AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
-dnl Fool anybody using AC_PROG_CXX.
-AC_PROVIDE([AC_PROG_CXX])
-# Use glibcpp_CXX so that we do not cause CXX to be cached with the
-# flags that come in CXX while configuring libstdc++. They're different
-# from those used for all other target libraries. If CXX is set in
-# the environment, respect that here.
-glibcpp_CXX=$CXX
-AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
-AC_SUBST(glibcpp_CXX)
-CXX=$glibcpp_CXX
-test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
-
-AC_PROG_CXX_GNU
-
-if test $ac_cv_prog_gxx = yes; then
- GXX=yes
-dnl Check whether -g works, even if CXXFLAGS is set, in case the package
-dnl plays around with CXXFLAGS (such as to build both debugging and
-dnl normal versions of a library), tasteless as that idea is.
- ac_test_CXXFLAGS="${CXXFLAGS+set}"
- ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS=
- AC_PROG_CXX_G
- if test "$ac_test_CXXFLAGS" = set; then
- CXXFLAGS="$ac_save_CXXFLAGS"
- elif test $ac_cv_prog_cxx_g = yes; then
- CXXFLAGS="-g -O2"
+ LIB_AC_PROG_CC
+
+ # Likewise for AC_PROG_CXX. We can't just call it directly because g++
+ # will try to link in libstdc++.
+ AC_DEFUN(LIB_AC_PROG_CXX,
+ [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
+ dnl Fool anybody using AC_PROG_CXX.
+ AC_PROVIDE([AC_PROG_CXX])
+ # Use glibcpp_CXX so that we do not cause CXX to be cached with the
+ # flags that come in CXX while configuring libstdc++. They're different
+ # from those used for all other target libraries. If CXX is set in
+ # the environment, respect that here.
+ glibcpp_CXX=$CXX
+ AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
+ AC_SUBST(glibcpp_CXX)
+ CXX=$glibcpp_CXX
+ test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
+
+ AC_PROG_CXX_GNU
+
+ if test $ac_cv_prog_gxx = yes; then
+ GXX=yes
+ dnl Check whether -g works, even if CXXFLAGS is set, in case the package
+ dnl plays around with CXXFLAGS (such as to build both debugging and
+ dnl normal versions of a library), tasteless as that idea is.
+ ac_test_CXXFLAGS="${CXXFLAGS+set}"
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS=
+ AC_PROG_CXX_G
+ if test "$ac_test_CXXFLAGS" = set; then
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ elif test $ac_cv_prog_cxx_g = yes; then
+ CXXFLAGS="-g -O2"
+ else
+ CXXFLAGS="-O2"
+ fi
else
- CXXFLAGS="-O2"
+ GXX=
+ test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
fi
-else
- GXX=
- test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
-fi
-])
+ ])
+
+ LIB_AC_PROG_CXX
-LIB_AC_PROG_CXX
+ # For directory versioning (e.g., headers) and other variables.
+ AC_MSG_CHECKING([for GCC version number])
+ gcc_version=`$glibcpp_CXX -dumpversion`
+ AC_MSG_RESULT($gcc_version)
- # For some reason, gettext needs this.
- AC_ISC_POSIX
+ # For some reason, gettext needs this.
+ AC_ISC_POSIX
AC_CHECK_TOOL(AS, as)
AC_CHECK_TOOL(AR, ar)
# at least currently, we never actually build a program, so we never
# need to use $(EXEEXT). Moreover, the test for EXEEXT normally
# fails, because we are probably configuring with a cross compiler
- # which cant create executables. So we include AC_EXEEXT to keep
- # automake happy, but we dont execute it, since we dont care about
+ # which can't create executables. So we include AC_EXEEXT to keep
+ # automake happy, but we don't execute it, since we don't care about
# the result.
if false; then
# autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
AC_EXEEXT
fi
- . [$]{glibcpp_basedir}/configure.host
-
case [$]{glibcpp_basedir} in
/* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
*) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
esac
- # This does for the target what configure.host does for the host. In
+ # Find platform-specific directories containing configuration info. In
# addition to possibly modifying the same flags, it also sets up symlinks.
GLIBCPP_CHECK_TARGET
-
- #
])
dnl
dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
+dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as
+dnl side-effects of testing.
dnl
dnl GLIBCPP_CHECK_LINKER_FEATURES
AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
# 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...
- SECTION_LDFLAGS=''
- OPT_LDFLAGS=''
+ test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+ test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
AC_REQUIRE([AC_PROG_LD])
+ # 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=$ac_cv_prog_gnu_ld
+ fi
+ fi
+
+ # Start by getting the version number. I think the libtool test already
+ # does some of this, but throws away the result.
+ changequote(,)
+ ldver=`$LD --version 2>/dev/null | head -1 | \
+ sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
+ changequote([,])
+ glibcpp_gnu_ld_version=`echo $ldver | \
+ $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
+
# Set --gc-sections.
- if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
+ if test "$with_gnu_ld" = "notbroken"; then
# GNU ld it is! Joy and bunny rabbits!
# All these tests are for C++; save the language and the compiler flags.
catch (...) { };
return 0;
}
- ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
+ ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
if test "$ac_test_CFLAGS" = set; then
CFLAGS="$ac_save_CFLAGS"
else
CFLAGS=''
fi
if test "$ac_sectionLDflags" = "yes"; then
- SECTION_LDFLAGS='-Wl,--gc-sections'
+ SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
fi
AC_MSG_RESULT($ac_sectionLDflags)
fi
# Set linker optimization flags.
- if test x"$ac_cv_prog_gnu_ld" = x"yes" &&
- test x"$enable_debug" = x"no"; then
- OPT_LDFLAGS='-Wl,-O1'
+ if test x"$with_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
+ OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
fi
AC_SUBST(SECTION_LDFLAGS)
dnl
+dnl Check to see if the (stdlib function) argument passed is
+dnl 1) declared when using the c++ compiler
+dnl 2) has "C" linkage
+dnl
+dnl argument 1 is name of function to check
+dnl
+dnl ASSUMES argument is a function with THREE parameters
+dnl
+dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3
+AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [
+ AC_MSG_CHECKING([for $1 declaration])
+ if test x${glibcpp_cv_func_$1_use+set} != xset; then
+ AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([#include <stdlib.h>],
+ [ $1(0, 0, 0);],
+ [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
+ AC_LANG_RESTORE
+ ])
+ fi
+ AC_MSG_RESULT($glibcpp_cv_func_$1_use)
+ if test x$glibcpp_cv_func_$1_use = x"yes"; then
+ AC_CHECK_FUNCS($1)
+ fi
+])
+
+
+dnl
dnl Because the builtins are picky picky picky about the arguments they take,
dnl do an explict linkage tests here.
dnl Check to see if the (math function) argument passed is
dnl check for __builtin_labs
dnl check for __builtin_sqrtf
dnl check for __builtin_sqrtl
-dnl check for __builtin_fsqrt
+dnl check for __builtin_sqrt
dnl check for __builtin_sinf
dnl check for __builtin_sin
dnl check for __builtin_sinl
GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt)
+ GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
AC_DEFINE(HAVE___BUILTIN_SIN)
AC_DEFINE(HAVE___BUILTIN_SINF)
AC_DEFINE(HAVE___BUILTIN_SINL)
- AC_DEFINE(HAVE___BUILTIN_FSQRT)
+ AC_DEFINE(HAVE___BUILTIN_SQRT)
AC_DEFINE(HAVE___BUILTIN_SQRTF)
AC_DEFINE(HAVE___BUILTIN_SQRTL)
fi
CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
+ GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
AC_CHECK_FUNCS(drand48)
CXXFLAGS="$ac_save_CXXFLAGS"
GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
float_round,
ceilf floorf)
+ GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
AC_CHECK_LIB(m, main)
AC_REPLACE_MATHFUNCS(nan copysignf)
+ dnl For __signbit to signbit conversions.
+ AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
+ AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
+
dnl Compile the long double complex functions only if the function
dnl provides the non-complex long double functions that are needed.
dnl Currently this includes copysignl, which should be
dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
- USE_COMPLEX_LONG_DOUBLE=no
if test x$ac_cv_func_copysignl = x"yes"; then
- USE_COMPLEX_LONG_DOUBLE=yes
- AC_REPLACE_MATHFUNCS(signbitl)
+ AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
fi
- AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
+ AC_SUBST(LIBMATHOBJS)
])
dnl Sanity check for existence of ISO C99 headers for extended encoding.
AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
- AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
+ AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
dnl Only continue checking if the ISO C99 headers exist and support is on.
if test x"$ac_has_wchar_h" = xyes &&
--enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
],
if test x$enable_clocale = xno; then
- enable_clocale=generic
+ enable_clocale=no
fi,
- enable_clocale=generic)
+ enable_clocale=no)
enable_clocale_flag=$enable_clocale
- dnl Check if a valid locale package
+ dnl Probe for locale support if no specific model is specified.
+ dnl Default to "generic"
+ if test x$enable_clocale_flag = xno; then
+ case x${target_os} in
+ xlinux* | xgnu*)
+ AC_EGREP_CPP([_GLIBCPP_ok], [
+ #include <features.h>
+ #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
+ _GLIBCPP_ok
+ #endif
+ ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
+
+ # Test for bugs early in glibc-2.2.x series
+ if test x$enable_clocale_flag = xgnu; then
+ AC_TRY_RUN([
+ #define _GNU_SOURCE 1
+ #include <locale.h>
+ #include <string.h>
+ #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
+ extern __typeof(newlocale) __newlocale;
+ extern __typeof(duplocale) __duplocale;
+ extern __typeof(strcoll_l) __strcoll_l;
+ #endif
+ int main()
+ {
+ const char __one[] = "Äuglein Augmen";
+ const char __two[] = "Äuglein";
+ int i;
+ int j;
+ __locale_t loc;
+ __locale_t loc_dup;
+ loc = __newlocale(1 << LC_ALL, "de_DE", 0);
+ loc_dup = __duplocale(loc);
+ i = __strcoll_l(__one, __two, loc);
+ j = __strcoll_l(__one, __two, loc_dup);
+ return 0;
+ }
+ ],
+ [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
+ [enable_clocale_flag=generic])
+ fi
+
+ # ... at some point put __strxfrm_l tests in as well.
+ ;;
+ *)
+ enable_clocale_flag=generic
+ ;;
+ esac
+ fi
+
+ dnl Deal with gettext issues.
+ AC_ARG_ENABLE(nls,
+ [ --enable-nls use Native Language Support (default)],
+ , enable_nls=yes)
+ USE_NLS=no
+
+ dnl Set configure bits for specified locale package
case x${enable_clocale_flag} in
xgeneric)
AC_MSG_RESULT(generic)
- # Don't use gettext.
- USE_NLS=no
-
- CLOCALE_H=config/locale/c_locale_generic.h
- CLOCALE_CC=config/locale/c_locale_generic.cc
- CCODECVT_H=config/locale/codecvt_specializations_generic.h
- CMESSAGES_H=config/locale/messages_members_generic.h
- CMESSAGES_CC=config/locale/messages_members_generic.cc
- CCOLLATE_CC=config/locale/collate_specializations_generic.cc
+ CLOCALE_H=config/locale/generic/c_locale.h
+ CLOCALE_CC=config/locale/generic/c_locale.cc
+ CCODECVT_H=config/locale/generic/codecvt_specializations.h
+ CCODECVT_CC=config/locale/generic/codecvt_members.cc
+ CCOLLATE_CC=config/locale/generic/collate_members.cc
+ CCTYPE_CC=config/locale/generic/ctype_members.cc
+ CMESSAGES_H=config/locale/generic/messages_members.h
+ CMESSAGES_CC=config/locale/generic/messages_members.cc
+ CMONEY_CC=config/locale/generic/monetary_members.cc
+ CNUMERIC_CC=config/locale/generic/numeric_members.cc
+ CTIME_CC=config/locale/generic/time_members.cc
+ CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
;;
xgnu)
AC_MSG_RESULT(gnu)
# Declare intention to use gettext, and add support for specific
# languages.
- # For some reason, ALL_LINGUAS has to be before AM_GNU_GETTEXT
+ # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
ALL_LINGUAS="de fr"
- # Don't call AM_GNU_GETTEXT here. Instead, assume glibc.
- # Need to deal with MSGFMT, USE_NLS, and glibcpp_[P,M]OFILES
- USE_NLS=yes
+ # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
+ AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
+ if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
+ USE_NLS=yes
+ fi
# Export the build objects.
for ling in $ALL_LINGUAS; do \
glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
AC_SUBST(glibcpp_MOFILES)
AC_SUBST(glibcpp_POFILES)
- CLOCALE_H=config/locale/c_locale_gnu.h
- CLOCALE_CC=config/locale/c_locale_gnu.cc
- CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
- CMESSAGES_H=config/locale/messages_members_gnu.h
- CMESSAGES_CC=config/locale/messages_members_gnu.cc
- CCOLLATE_CC=config/locale/collate_specializations_gnu.cc
+ 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
+ CMESSAGES_H=config/locale/gnu/messages_members.h
+ CMESSAGES_CC=config/locale/gnu/messages_members.cc
+ CMONEY_CC=config/locale/gnu/monetary_members.cc
+ CNUMERIC_CC=config/locale/gnu/numeric_members.cc
+ CTIME_CC=config/locale/gnu/time_members.cc
+ CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
;;
- xieee_1003.1)
+ xieee_1003.1-2001)
AC_MSG_RESULT(generic)
- # Don't use gettext.
- USE_NLS=no
-
- CLOCALE_H=config/locale/c_locale_ieee_1003.1-200x.h
- CLOCALE_CC=config/locale/c_locale_ieee_1003.1-200x.cc
- CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
- CMESSAGES_H=config/locale/messages_members_ieee_1003.1-200x.h
- CMESSAGES_CC=config/locale/messages_members_ieee_1003.1-200x.cc
- CCOLLATE_CC=config/locale/collate_specializations_generic.cc
+ 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
+ CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
+ CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
+ CMONEY_CC=config/locale/generic/monetary_members.cc
+ CNUMERIC_CC=config/locale/generic/numeric_members.cc
+ CTIME_CC=config/locale/generic/time_members.cc
+ CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
;;
*)
echo "$enable_clocale is an unknown locale package" 1>&2
glibcpp_localedir=${glibcpp_builddir}/po/share/locale
AC_SUBST(glibcpp_localedir)
+ # For the time being, transform ctype_noninline.h to ctype_members_char.cc
+# CCTYPE_CHAR_CC=config/${os_include_dir}/ctype_noninline.h
+
AC_SUBST(USE_NLS)
AC_SUBST(CLOCALE_H)
AC_SUBST(CCODECVT_H)
AC_SUBST(CMESSAGES_H)
AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
- AC_LINK_FILES($CMESSAGES_CC, src/messages.cc)
- AC_LINK_FILES($CCOLLATE_CC, src/collate.cc)
+ AC_LINK_FILES($CCODECVT_CC, src/codecvt_members.cc)
+ AC_LINK_FILES($CCOLLATE_CC, src/collate_members.cc)
+# AC_LINK_FILES($CCTYPE_CHAR_CC, src/ctype_members_char.cc)
+ AC_LINK_FILES($CCTYPE_CC, src/ctype_members.cc)
+ AC_LINK_FILES($CMESSAGES_CC, src/messages_members.cc)
+ AC_LINK_FILES($CMONEY_CC, src/monetary_members.cc)
+ AC_LINK_FILES($CNUMERIC_CC, src/numeric_members.cc)
+ AC_LINK_FILES($CTIME_CC, src/time_members.cc)
+ AC_LINK_FILES($CLOCALE_INTERNAL_H, src/c++locale_internal.h)
])
dnl
+dnl Check for libunwind exception handling support. If enabled then
+dnl we assume that the _Unwind_* functions that make up the Unwind ABI
+dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
+dnl libunwind instead of libgcc and that libstdc++ has a dependency
+dnl on libunwind as well as libgcc.
+dnl
+dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
+dnl --enable-libunwind-exceptions forces the use of libunwind.
+dnl --disable-libunwind-exceptions assumes there is no libunwind.
+dnl
+dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested.
+dnl
+AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [
+ AC_MSG_CHECKING([for use of libunwind])
+ AC_ARG_ENABLE(libunwind-exceptions,
+ [ --enable-libunwind-exceptions force use of libunwind for exceptions],
+ use_libunwind_exceptions=$enableval,
+ use_libunwind_exceptions=no)
+ AC_MSG_RESULT($use_libunwind_exceptions)
+ dnl Option parsed, now set things appropriately
+ if test x"$use_libunwind_exceptions" = xyes; then
+ LIBUNWIND_FLAG="-lunwind"
+ else
+ LIBUNWIND_FLAG=""
+ fi
+ AC_SUBST(LIBUNWIND_FLAG)
+])
+
+dnl
dnl Check for ISO/IEC 9899:1999 "C99" support.
dnl
dnl GLIBCPP_ENABLE_C99
AC_ARG_ENABLE(c99,
changequote(<<, >>)dnl
- <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
+ <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
changequote([, ])dnl
[case "$enableval" in
yes) enable_c99=yes ;;
[char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
AC_TRY_COMPILE([#include <stdlib.h>],
[char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtoll("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtoull("gnu", &tmp, 10);],, [ac_c99_stdlib=no])
AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
dnl
dnl Check for template specializations for the 'long long' type extension.
-dnl NB: Must check for C99 support before calling _GLIBCPP_ENABLE_LONG_LONG
+dnl The result determines only whether 'long long' I/O is enabled; things
+dnl like numeric_limits<> specializations are always available.
dnl
dnl GLIBCPP_ENABLE_LONG_LONG
dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
esac],
enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
- # iostreams require strtoll, strtoull to compile. If the
- # GLIBCPP_ENABLE_C99 tests found these, and if C99 support is enabled,
- # go ahead and allow long long to be used.
- if test x"$enable_c99" = x"no"; then
- enable_long_long=no;
- fi
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+
+ AC_MSG_CHECKING([for enabled long long I/O support])
+ # iostreams require strtoll, strtoull to compile
+ AC_TRY_COMPILE([#include <stdlib.h>],
+ [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
+ AC_TRY_COMPILE([#include <stdlib.h>],
+ [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
# Option parsed, now set things appropriately
- AC_MSG_CHECKING([for enabled long long support])
if test x"$enable_long_long" = xyes; then
AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
fi
AC_MSG_RESULT($enable_long_long)
+
+ AC_LANG_RESTORE
])
dnl GLIBCPP_ENABLE_CHEADERS
dnl --enable-cheaders= [does stuff].
dnl --disable-cheaders [does not do anything, really].
-dnl + This will eventually need to be 'c_shadow' by default.
dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
-dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
+dnl Where DEFAULT is either `c' or `c_std'.
dnl If ommitted, it defaults to `c_std'.
AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
c_std)
enable_cheaders=c_std
;;
- c_shadow)
- enable_cheaders=c_shadow
- ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
;;
esac],
dnl Option parsed, now set things appropriately
case "$enable_cheaders" in
- c_shadow)
- CSHADOW_FLAGS="-fno-builtin"
- C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
- AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
- ;;
c_std)
- CSHADOW_FLAGS=""
C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
;;
c)
- CSHADOW_FLAGS=""
C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
;;
esac
- AC_SUBST(CSHADOW_FLAGS)
AC_SUBST(C_INCLUDE_DIR)
- AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
+ AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c)
+ AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
+ AM_CONDITIONAL(GLIBCPP_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
])
dnl LIBMATH_INCLUDES
dnl LIBSUPCXX_INCLUDES
dnl LIBIO_INCLUDES
-dnl CSHADOW_INCLUDES
dnl
dnl GLIBCPP_EXPORT_INCLUDES
AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
glibcpp_toolexeclibdir=no
glibcpp_prefixdir=${prefix}
-AC_MSG_CHECKING([for interface version number])
-libstdcxx_interface=$INTERFACE
-AC_MSG_RESULT($libstdcxx_interface)
-
# Process the option --with-gxx-include-dir=<path to include-files directory>
AC_MSG_CHECKING([for --with-gxx-include-dir])
AC_ARG_WITH(gxx-include-dir,
# Option set, now we can test it.
AC_MSG_RESULT($version_specific_libs)
+# Default case for install directory for include files.
+if test $version_specific_libs = no && test $gxx_include_dir = no; then
+ gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
+fi
+
+# Version-specific runtime libs processing.
if test $version_specific_libs = yes; then
# Need the gcc compiler version to know where to install libraries
# and header files if --enable-version-specific-runtime-libs option
# is selected.
- changequote(,)dnl
- gcc_version_trigger=${srcdir}/../gcc/version.c
- gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
- gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
- gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
+ if test x"$gxx_include_dir" = x"no"; then
+ gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
+ fi
glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
- changequote([,])dnl
-fi
-
-# Default case for install directory for include files.
-if test $version_specific_libs = no &&
- test $gxx_include_dir = no; then
- gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
fi
# Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
AC_DEFUN(AC_REPLACE_MATHFUNCS,
-[AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
-AC_SUBST(LIBMATHOBJS)dnl
-])
-
+[AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
dnl This macro searches for a GNU version of make. If a match is found, the
dnl Check for headers for, and arguments to, the setrlimit() function.
dnl Used only in testsuite_hooks.h.
AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
- AC_TRY_COMPILE([#include <sys/resource.h>
- #include <unistd.h>
+ AC_TRY_COMPILE([#include <unistd.h>
+ #include <sys/time.h>
+ #include <sys/resource.h>
], [ int f = RLIMIT_$1 ; ],
[glibcpp_mresult=1], [glibcpp_mresult=0])
AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
])
AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
setrlimit_have_headers=yes
- AC_CHECK_HEADERS(sys/resource.h unistd.h,
+ AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
[],
setrlimit_have_headers=no)
# If don't have the headers, then we can't run the tests now, and we
# Check for rlimit, setrlimit.
AC_CACHE_VAL(ac_setrlimit, [
- AC_TRY_COMPILE([#include <sys/resource.h>
- #include <unistd.h>
+ AC_TRY_COMPILE([#include <unistd.h>
+ #include <sys/time.h>
+ #include <sys/resource.h>
],
[ struct rlimit r; setrlimit(0, &r);],
[ac_setrlimit=yes], [ac_setrlimit=no])
dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
GLIBCPP_CHECK_SETRLIMIT
+
+ # Look for setenv, so that extended locale tests can be performed.
+ GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
+
+ # Export file names for ABI checking.
+ baseline_file="${glibcpp_srcdir}/config/abi/${abi_baseline_triplet}/baseline_symbols.txt"
+ AC_SUBST(baseline_file)
+
+ # Don't do ABI checking unless native.
+ AM_CONDITIONAL(GLIBCPP_BUILD_ABI_CHECK,
+ test x"$build" = x"$host" && test -z "$with_cross_host")
])
])
])
+
+dnl
+dnl Check for whether the Boost-derived checks should be turned on.
+dnl
+dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
+dnl --enable-concept-checks turns them on.
+dnl --disable-concept-checks leaves them off.
+dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
+dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
+dnl defaults to `no'.
+AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
+define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
+AC_ARG_ENABLE(concept-checks,
+changequote(<<, >>)dnl
+<< --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
+changequote([, ])dnl
+[case "$enableval" in
+ yes) enable_concept_checks=yes ;;
+ no) enable_concept_checks=no ;;
+ *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
+ esac],
+enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
+dnl Option parsed, now set things appropriately
+if test x"$enable_concept_checks" = xyes; then
+ AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)
+fi
+])
+
+
+dnl
+dnl Add version tags to symbols in shared library (or not), additionally
+dnl marking other symbols as private/local (or not).
+dnl
+dnl GLIBCPP_ENABLE_SYMVERS
+dnl --enable-symvers=style adds a version script to the linker call when
+dnl creating the shared library. The choice of version script is
+dnl controlled by 'style'.
+dnl --disable-symvers does not.
+dnl + Usage: GLIBCPP_ENABLE_SYMVERS[(DEFAULT)]
+dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
+dnl defaults to `no'. Passing `yes' tries to choose a default style
+dnl based on linker characteristics. Passing 'no' disables versioning.
+AC_DEFUN(GLIBCPP_ENABLE_SYMVERS, [dnl
+define([GLIBCPP_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
+AC_ARG_ENABLE(symvers,
+changequote(<<, >>)dnl
+<< --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCPP_ENABLE_SYMVERS_DEFAULT],
+changequote([, ])dnl
+[case "$enableval" in
+ yes) enable_symvers=yes ;;
+ no) enable_symvers=no ;;
+ # other names here, just as sanity checks
+ #gnu|sun|etcetera) enable_symvers=$enableval ;;
+ gnu) enable_symvers=$enableval ;;
+ *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
+ esac],
+enable_symvers=GLIBCPP_ENABLE_SYMVERS_DEFAULT)dnl
+
+# If we never went through the GLIBCPP_CHECK_LINKER_FEATURES macro, then we
+# don't know enough about $LD to do tricks...
+if test x$enable_shared = xno ||
+ test "x$LD" = x ||
+ test x$glibcpp_gnu_ld_version = x; then
+ enable_symvers=no
+fi
+
+# Check to see if libgcc_s exists, indicating that shared libgcc is possible.
+if test $enable_symvers != no; then
+ AC_MSG_CHECKING([for shared libgcc])
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS=' -lgcc_s'
+ AC_TRY_LINK(, [return 0], glibcpp_shared_libgcc=yes, glibcpp_shared_libgcc=no)
+ CFLAGS="$ac_save_CFLAGS"
+ AC_MSG_RESULT($glibcpp_shared_libgcc)
+fi
+
+# For GNU ld, we need at least this version. It's 2.12 in the same format
+# as the tested-for version. See GLIBCPP_CHECK_LINKER_FEATURES for more.
+glibcpp_min_gnu_ld_version=21200
+
+# Check to see if unspecified "yes" value can win, given results
+# above.
+if test $enable_symvers = yes ; then
+ if test $with_gnu_ld = yes &&
+ test $glibcpp_shared_libgcc = yes ;
+ then
+ if test $glibcpp_gnu_ld_version -ge $glibcpp_min_gnu_ld_version ; then
+ enable_symvers=gnu
+ else
+ ac_test_CFLAGS="${CFLAGS+set}"
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS='-shared -Wl,--version-script,conftest.map'
+ enable_symvers=no
+ changequote(,)
+ echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map
+ changequote([,])
+ AC_TRY_LINK([int foo;],, enable_symvers=gnu)
+ if test "$ac_test_CFLAGS" = set; then
+ CFLAGS="$ac_save_CFLAGS"
+ else
+ # this is the suspicious part
+ CFLAGS=''
+ fi
+ rm -f conftest.map
+ fi
+ else
+ # just fail for now
+ enable_symvers=no
+ fi
+fi
+
+dnl Everything parsed; figure out what file to use.
+case $enable_symvers in
+ no)
+ LINKER_MAP=config/linker-map.dummy
+ ;;
+ gnu)
+ LINKER_MAP=config/linker-map.gnu
+ AC_DEFINE(_GLIBCPP_SYMVER)
+ ;;
+esac
+
+AC_LINK_FILES($LINKER_MAP, src/linker.map)
+AM_CONDITIONAL(GLIBCPP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
+AC_MSG_CHECKING([versioning on shared library symbols])
+AC_MSG_RESULT($enable_symvers)
+])
+
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