enable_linux_futex
enable_symvers
enable_libstdcxx_visibility
+enable_libstdcxx_threads
with_gxx_include_dir
enable_version_specific_runtime_libs
'
[default=yes]
--enable-libstdcxx-visibility
enables visibility safe usage [default=yes]
+ --enable-libstdcxx-threads
+ enable C++11 threads support [default=auto]
--enable-version-specific-runtime-libs
Specify that runtime libraries should be installed
in a compiler-specific directory
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11495 "configure"
+#line 11498 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11601 "configure"
+#line 11604 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
#
# Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
cat > conftest.$ac_ext << EOF
-#line 14959 "configure"
+#line 14962 "configure"
struct S { ~S(); };
void bar();
void foo()
# Fake what AC_TRY_COMPILE does.
cat > conftest.$ac_ext << EOF
-#line 15294 "configure"
+#line 15297 "configure"
int main()
{
typedef bool atomic_type;
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 15329 "configure"
+#line 15332 "configure"
int main()
{
typedef short atomic_type;
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 15364 "configure"
+#line 15367 "configure"
int main()
{
// NB: _Atomic_word not necessarily int.
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 15400 "configure"
+#line 15403 "configure"
int main()
{
typedef long long atomic_type;
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
-#line 15480 "configure"
+#line 15483 "configure"
int main()
{
_Decimal32 d1;
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
-#line 15522 "configure"
+#line 15525 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };
rm -f conftest*
cat > conftest.$ac_ext << EOF
-#line 15556 "configure"
+#line 15559 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };
-# For gthread support
-
-
- ac_ext=cpp
-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 \
- -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc"
-
- target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
- case $target_thread_file in
- posix)
- CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
- esac
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether it can be safely assumed that mutex_timedlock is available" >&5
-$as_echo_n "checking whether it can be safely assumed that mutex_timedlock is available... " >&6; }
-
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <unistd.h>
-int
-main ()
-{
-
- // In case of POSIX threads check _POSIX_TIMEOUTS.
- #if (defined(_PTHREADS) \
- && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
- #error
- #endif
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_cxx_try_compile "$LINENO"; then :
- ac_gthread_use_mutex_timedlock=1
-else
- ac_gthread_use_mutex_timedlock=0
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-
-cat >>confdefs.h <<_ACEOF
-#define _GTHREAD_USE_MUTEX_TIMEDLOCK $ac_gthread_use_mutex_timedlock
-_ACEOF
-
-
- if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ;
- else res_mutex_timedlock=no ; fi
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $res_mutex_timedlock" >&5
-$as_echo "$res_mutex_timedlock" >&6; }
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gthreads library" >&5
-$as_echo_n "checking for gthreads library... " >&6; }
-
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include "gthr.h"
-int
-main ()
-{
-
- #ifndef __GTHREADS_CXX0X
- #error
- #endif
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_cxx_try_compile "$LINENO"; then :
- ac_has_gthreads=yes
-else
- ac_has_gthreads=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_has_gthreads" >&5
-$as_echo "$ac_has_gthreads" >&6; }
-
- if test x"$ac_has_gthreads" = x"yes"; then
-
-$as_echo "#define _GLIBCXX_HAS_GTHREADS 1" >>confdefs.h
-
- fi
-
- CXXFLAGS="$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
-
-
-
ac_fn_c_check_header_mongrel "$LINENO" "locale.h" "ac_cv_header_locale_h" "$ac_includes_default"
if test "x$ac_cv_header_locale_h" = x""yes; then :
+# For gthread support. Depends on GLIBCXX_ENABLE_SYMVERS.
+
+ # Check whether --enable-libstdcxx-threads was given.
+if test "${enable_libstdcxx_threads+set}" = set; then :
+ enableval=$enable_libstdcxx_threads;
+ case "$enableval" in
+ yes|no) ;;
+ *) as_fn_error "Argument to enable/disable libstdcxx-threads must be yes or no" "$LINENO" 5 ;;
+ esac
+
+else
+ enable_libstdcxx_threads=auto
+fi
+
+
+
+ if test x$enable_libstdcxx_threads = xauto ||
+ test x$enable_libstdcxx_threads = xyes; then
+
+
+ ac_ext=cpp
+ac_cpp='$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 \
+ -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc"
+
+ target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
+ case $target_thread_file in
+ posix)
+ CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
+ esac
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether it can be safely assumed that mutex_timedlock is available" >&5
+$as_echo_n "checking whether it can be safely assumed that mutex_timedlock is available... " >&6; }
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <unistd.h>
+int
+main ()
+{
+
+ // In case of POSIX threads check _POSIX_TIMEOUTS.
+ #if (defined(_PTHREADS) \
+ && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
+ #error
+ #endif
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+ ac_gthread_use_mutex_timedlock=1
+else
+ ac_gthread_use_mutex_timedlock=0
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+cat >>confdefs.h <<_ACEOF
+#define _GTHREAD_USE_MUTEX_TIMEDLOCK $ac_gthread_use_mutex_timedlock
+_ACEOF
+
+
+ if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ;
+ else res_mutex_timedlock=no ; fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $res_mutex_timedlock" >&5
+$as_echo "$res_mutex_timedlock" >&6; }
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gthreads library" >&5
+$as_echo_n "checking for gthreads library... " >&6; }
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include "gthr.h"
+int
+main ()
+{
+
+ #ifndef __GTHREADS_CXX0X
+ #error
+ #endif
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+ case $target_os in
+ # gthreads support breaks symbol versioning on Solaris 8/9 (PR
+ # libstdc++/52189).
+ solaris2.[89]*)
+ if test x$enable_symvers = xno; then
+ ac_has_gthreads=yes
+ elif test x$enable_libstdcxx_threads = xyes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: You have requested C++11 threads support, but" >&5
+$as_echo "$as_me: WARNING: You have requested C++11 threads support, but" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: this breaks symbol versioning." >&5
+$as_echo "$as_me: WARNING: this breaks symbol versioning." >&2;}
+ ac_has_gthreads=yes
+ else
+ ac_has_gthreads=no
+ fi
+ ;;
+ *)
+ ac_has_gthreads=yes
+ ;;
+ esac
+else
+ ac_has_gthreads=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ else
+ ac_has_gthreads=no
+ fi
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_has_gthreads" >&5
+$as_echo "$ac_has_gthreads" >&6; }
+
+ if test x"$ac_has_gthreads" = x"yes"; then
+
+$as_echo "#define _GLIBCXX_HAS_GTHREADS 1" >>confdefs.h
+
+ fi
+
+ CXXFLAGS="$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
+
+
+
# Define documentation rules conditionally.
# See if makeinfo has been installed and is modern enough
projects / gcc.git / commitdiff