# Keep these sync'd with the list in Makefile.am. The first provides an
# expandable list at autoconf time; the second provides an expandable list
# (i.e., shell variable) at configure time.
- m4_define([glibcxx_SUBDIRS],[include libsupc++ src doc po testsuite])
+ m4_define([glibcxx_SUBDIRS],[include libsupc++ python src doc po testsuite])
SUBDIRS='glibcxx_SUBDIRS'
# These need to be absolute paths, yet at the same time need to
AC_HELP_STRING([--with-newlib],
[assume newlib as a system C library]))
- # We're almost certainly being configured before anything else which uses
- # C++, so all of our AC_PROG_* discoveries will be cached. It's vital that
- # we not cache the value of CXX that we "discover" here, because it's set
- # to something unique for us and libjava. Other target libraries need to
- # find CXX for themselves. We yank the rug out from under the normal AC_*
- # process by sneakily renaming the cache variable. This also lets us debug
- # the value of "our" CXX in postmortems.
- #
- # We must also force CXX to /not/ be a precious variable, otherwise the
- # wrong (non-multilib-adjusted) value will be used in multilibs. This
- # little trick also affects CPPFLAGS, CXXFLAGS, and LDFLAGS. And as a side
- # effect, CXXFLAGS is no longer automagically subst'd, so we have to do
- # that ourselves. Un-preciousing AC_PROG_CC also affects CC and CFLAGS.
- #
- # -fno-builtin must be present here so that a non-conflicting form of
- # std::exit can be guessed by AC_PROG_CXX, and used in later tests.
-
- m4_define([ac_cv_prog_CXX],[glibcxx_cv_prog_CXX])
- m4_rename([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS])
- m4_define([_AC_ARG_VAR_PRECIOUS],[])
- save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS="$CXXFLAGS -fno-builtin"
- AC_PROG_CC
- AC_PROG_CXX
- CXXFLAGS="$save_CXXFLAGS"
- m4_rename([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
- AC_SUBST(CFLAGS)
- AC_SUBST(CXXFLAGS)
-
# Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't
# available). Uncomment the next line to force a particular method.
AC_PROG_LN_S
if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
glibcxx_ld_is_gold=yes
fi
- ldver=`$LD --version 2>/dev/null | head -1 | \
- sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+ ldver=`$LD --version 2>/dev/null |
+ sed -e 's/GNU gold /GNU ld /;s/GNU ld version /GNU ld /;s/GNU ld ([^)]*) /GNU ld /;s/GNU ld \([0-9.][0-9.]*\).*/\1/; q'`
changequote([,])
glibcxx_gnu_ld_version=`echo $ldver | \
$AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
CXXFLAGS="$CXXFLAGS -fno-exceptions"
ac_save_LIBS="$LIBS"
- ac_has_clock_monotonic=no;
- ac_has_clock_realtime=no;
+ ac_has_clock_monotonic=no
+ ac_has_clock_realtime=no
+ AC_MSG_RESULT($enable_libstdcxx_time)
if test x"$enable_libstdcxx_time" != x"no"; then
if test $enable_clocale_flag = gnu; then
AC_EGREP_CPP([_GLIBCXX_ok], [
#include <features.h>
- #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
+ #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(__UCLIBC__)
_GLIBCXX_ok
#endif
], enable_clocale_flag=gnu, enable_clocale_flag=generic)
- if test $enable_clocale = auto; then
- # Test for bugs early in glibc-2.2.x series
- AC_TRY_RUN([
- #define _GNU_SOURCE 1
- #include <locale.h>
- #include <string.h>
- #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
- extern __typeof(newlocale) __newlocale;
- extern __typeof(duplocale) __duplocale;
- extern __typeof(strcoll_l) __strcoll_l;
- #endif
- int main()
- {
- const char __one[] = "Äuglein Augmen";
- const char __two[] = "Äuglein";
- int i;
- int j;
- __locale_t loc;
- __locale_t loc_dup;
- loc = __newlocale(1 << LC_ALL, "de_DE", 0);
- loc_dup = __duplocale(loc);
- i = __strcoll_l(__one, __two, loc);
- j = __strcoll_l(__one, __two, loc_dup);
- return 0;
- }
- ],
- [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
- [enable_clocale_flag=generic])
- fi
-
# Set it to scream when it hurts.
ac_save_CFLAGS="$CFLAGS"
CFLAGS="-Wimplicit-function-declaration -Werror"
# See if configured libgomp/omp.h exists. (libgomp may be in
# noconfigdirs but not explicitly disabled.)
- if test -f $glibcxx_builddir/../libgomp/omp.h; then
+ if echo " ${TARGET_CONFIGDIRS} " | grep " libgomp " > /dev/null 2>&1 ; then
enable_parallel=yes;
else
- AC_MSG_NOTICE([$glibcxx_builddir/../libgomp/omp.h not found])
+ AC_MSG_NOTICE([target-libgomp not built])
fi
AC_MSG_CHECKING([for parallel mode support])
dnl
+dnl Check for decimal floating point.
+dnl See:
+dnl http://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html#Decimal-Float
+dnl
+dnl This checks to see if the host supports decimal floating point types.
+dnl
+dnl Defines:
+dnl _GLIBCXX_USE_DECIMAL_FLOAT
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_DECIMAL_FLOAT], [
+
+ # Fake what AC_TRY_COMPILE does, without linking as this is
+ # unnecessary for this test.
+
+ cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+int main()
+{
+ _Decimal32 d1;
+ _Decimal64 d2;
+ _Decimal128 d3;
+ return 0;
+}
+EOF
+
+ AC_MSG_CHECKING([for ISO/IEC TR 24733 ])
+ if AC_TRY_EVAL(ac_compile); then
+ AC_DEFINE(_GLIBCXX_USE_DECIMAL_FLOAT, 1,
+ [Define if ISO/IEC TR 24733 decimal floating point types are supported on this host.])
+ enable_dfp=yes
+ else
+ enable_dfp=no
+ fi
+ AC_MSG_RESULT($enable_dfp)
+ rm -f conftest*
+])
+
+dnl
dnl Check for template specializations for the 'wchar_t' type.
dnl
dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T
dnl that are used should be checked.
dnl
dnl Note:
-dnl libgomp and libgfortran do this with a link test, instead of an asm test.
-dnl see: CHECK_SYNC_FETCH_AND_ADD
+dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD.
dnl
dnl Defines:
dnl _GLIBCXX_ATOMIC_BUILTINS_1
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
old_CXXFLAGS="$CXXFLAGS"
-
+
+ # Do link tests if possible, instead asm tests, limited to some platforms
+ # see discussion in PR target/40134, PR libstdc++/40133 and the thread
+ # starting at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00322.html
+ atomic_builtins_link_tests=no
+ if test x$gcc_no_link != xyes; then
+ # Can do link tests. Limit to some tested platforms
+ case "$host" in
+ *-*-linux* | *-*-uclinux* | *-*-kfreebsd*-gnu | *-*-gnu*)
+ atomic_builtins_link_tests=yes
+ ;;
+ esac
+ fi
+
+ if test x$atomic_builtins_link_tests = xyes; then
+
+ # Do link tests.
+
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
+
+ AC_MSG_CHECKING([for atomic builtins for bool])
+ AC_CACHE_VAL(glibcxx_cv_atomic_bool, [
+ AC_TRY_LINK(
+ [ ],
+ [typedef bool atomic_type;
+ atomic_type c1;
+ atomic_type c2;
+ const atomic_type c3(0);
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();],
+ [glibcxx_cv_atomic_bool=yes],
+ [glibcxx_cv_atomic_bool=no])
+ ])
+ if test $glibcxx_cv_atomic_bool = yes; then
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
+ [Define if builtin atomic operations for bool are supported on this host.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_atomic_bool)
+
+ AC_MSG_CHECKING([for atomic builtins for short])
+ AC_CACHE_VAL(glibcxx_cv_atomic_short, [
+ AC_TRY_LINK(
+ [ ],
+ [typedef short atomic_type;
+ atomic_type c1;
+ atomic_type c2;
+ const atomic_type c3(0);
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();],
+ [glibcxx_cv_atomic_short=yes],
+ [glibcxx_cv_atomic_short=no])
+ ])
+ if test $glibcxx_cv_atomic_short = yes; then
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1,
+ [Define if builtin atomic operations for short are supported on this host.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_atomic_short)
+
+ AC_MSG_CHECKING([for atomic builtins for int])
+ AC_CACHE_VAL(glibcxx_cv_atomic_int, [
+ AC_TRY_LINK(
+ [ ],
+ [typedef int atomic_type;
+ atomic_type c1;
+ atomic_type c2;
+ const atomic_type c3(0);
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();],
+ [glibcxx_cv_atomic_int=yes],
+ [glibcxx_cv_atomic_int=no])
+ ])
+ if test $glibcxx_cv_atomic_int = yes; then
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
+ [Define if builtin atomic operations for int are supported on this host.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_atomic_int)
+
+ AC_MSG_CHECKING([for atomic builtins for long long])
+ AC_CACHE_VAL(glibcxx_cv_atomic_long_long, [
+ AC_TRY_LINK(
+ [ ],
+ [typedef long long atomic_type;
+ atomic_type c1;
+ atomic_type c2;
+ const atomic_type c3(0);
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();],
+ [glibcxx_cv_atomic_long_long=yes],
+ [glibcxx_cv_atomic_long_long=no])
+ ])
+ if test $glibcxx_cv_atomic_long_long = yes; then
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1,
+ [Define if builtin atomic operations for long long are supported on this host.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
+
+ else
+
+ # Do asm tests.
+
# Compile unoptimized.
CXXFLAGS='-O0 -S'
- # Fake what AC_TRY_COMPILE does, without linking as this is
- # unnecessary for a builtins test.
+ # Fake what AC_TRY_COMPILE does.
cat > conftest.$ac_ext << EOF
[#]line __oline__ "configure"
AC_MSG_CHECKING([for atomic builtins for bool])
if AC_TRY_EVAL(ac_compile); then
if grep __sync_ conftest.s >/dev/null 2>&1 ; then
- enable_atomic_builtinsb=no
+ glibcxx_cv_atomic_bool=no
else
AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
[Define if builtin atomic operations for bool are supported on this host.])
- enable_atomic_builtinsb=yes
+ glibcxx_cv_atomic_bool=yes
fi
fi
- AC_MSG_RESULT($enable_atomic_builtinsb)
+ AC_MSG_RESULT($glibcxx_cv_atomic_bool)
rm -f conftest*
cat > conftest.$ac_ext << EOF
AC_MSG_CHECKING([for atomic builtins for short])
if AC_TRY_EVAL(ac_compile); then
if grep __sync_ conftest.s >/dev/null 2>&1 ; then
- enable_atomic_builtinss=no
+ glibcxx_cv_atomic_short=no
else
AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1,
[Define if builtin atomic operations for short are supported on this host.])
- enable_atomic_builtinss=yes
+ glibcxx_cv_atomic_short=yes
fi
fi
- AC_MSG_RESULT($enable_atomic_builtinss)
+ AC_MSG_RESULT($glibcxx_cv_atomic_short)
rm -f conftest*
cat > conftest.$ac_ext << EOF
AC_MSG_CHECKING([for atomic builtins for int])
if AC_TRY_EVAL(ac_compile); then
if grep __sync_ conftest.s >/dev/null 2>&1 ; then
- enable_atomic_builtinsi=no
+ glibcxx_cv_atomic_int=no
else
AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
[Define if builtin atomic operations for int are supported on this host.])
- enable_atomic_builtinsi=yes
+ glibcxx_cv_atomic_int=yes
fi
fi
- AC_MSG_RESULT($enable_atomic_builtinsi)
+ AC_MSG_RESULT($glibcxx_cv_atomic_int)
rm -f conftest*
cat > conftest.$ac_ext << EOF
AC_MSG_CHECKING([for atomic builtins for long long])
if AC_TRY_EVAL(ac_compile); then
if grep __sync_ conftest.s >/dev/null 2>&1 ; then
- enable_atomic_builtinsll=no
+ glibcxx_cv_atomic_long_long=no
else
AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1,
[Define if builtin atomic operations for long long are supported on this host.])
- enable_atomic_builtinsll=yes
+ glibcxx_cv_atomic_long_long=yes
fi
fi
- AC_MSG_RESULT($enable_atomic_builtinsll)
+ AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
rm -f conftest*
+ fi
CXXFLAGS="$old_CXXFLAGS"
AC_LANG_RESTORE
# Set atomicity_dir to builtins if either of above tests pass.
- if test $enable_atomic_builtinsi = yes || test $enable_atomic_builtinsb = yes ; then
+ if test $glibcxx_cv_atomic_int = yes || test $glibcxx_cv_atomic_bool = yes ; then
atomicity_dir=cpu/generic/atomicity_builtins
fi
else
if test $with_gnu_ld = yes ; then
case ${target_os} in
- cygwin* | pe | mingw32* | hpux*)
+ hpux*)
enable_symvers=no ;;
*)
enable_symvers=gnu ;;
OSDN Git Service
