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| author | Paolo Carlini <pcarlini@suse.de> | 2007-11-09 15:54:33 +0000 |
|---|---|---|
| committer | Paolo Carlini <paolo@gcc.gnu.org> | 2007-11-09 15:54:33 +0000 |
| commit | 18f310b7d377ba5391fb3e81c10e3bba172be375 (patch) | |
| tree | aa8b68b6180c6bc37e6a51bf0590f7ce0a68aef6 /libstdc++-v3/configure | |
| parent | 76e910c6b72b46e017d7be9a6494113ebae72f85 (diff) | |
| download | gcc-18f310b7d377ba5391fb3e81c10e3bba172be375.zip gcc-18f310b7d377ba5391fb3e81c10e3bba172be375.tar.gz gcc-18f310b7d377ba5391fb3e81c10e3bba172be375.tar.bz2 | |
re PR libstdc++/34032 (-std=c++0x causes undeclared symbols errors on cygwin)
2007-11-09 Paolo Carlini <pcarlini@suse.de>
PR libstdc++/34032
* acinclude.m4 ([GLIBCXX_ENABLE_C99], [GLIBCXX_CHECK_C99_TR1]):
Use -std=c++98 instead of the default -std=gnu++98.
* configure: Regenerate.
From-SVN: r130047
Diffstat (limited to 'libstdc++-v3/configure')
| -rwxr-xr-x | libstdc++-v3/configure | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure index 96ca8bb..5e57fd6 100755 --- a/libstdc++-v3/configure +++ b/libstdc++-v3/configure @@ -15436,9 +15436,13 @@ ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ex ac_compiler_gnu=$ac_cv_cxx_compiler_gnu - # Use -fno-exceptions so that the C driver can link these tests without - # hitting undefined references to personality routines. + # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__ + # undefined and fake C99 facilities - like pre-standard snprintf - may be + # spuriously enabled. + # Long term, -std=c++0x could be even better, could manage to explicitely + # request C99 facilities to the underlying C headers. ac_save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -std=c++98" ac_save_LIBS="$LIBS" ac_save_gcc_no_link="$gcc_no_link" @@ -17778,7 +17782,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style. cat > conftest.$ac_ext << EOF -#line 17781 "configure" +#line 17785 "configure" int main() { // NB: _Atomic_word not necessarily int. @@ -39527,6 +39531,11 @@ ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ex ac_compiler_gnu=$ac_cv_cxx_compiler_gnu + # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__ + # undefined and fake C99 facilities may be spuriously enabled. + ac_save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -std=c++98" + # Check for the existence of <complex.h> complex math functions used # by tr1/complex. @@ -40544,6 +40553,7 @@ fi done + CXXFLAGS="$ac_save_CXXFLAGS" ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' |