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re PR libstdc++/34032 (-std=c++0x causes undeclared symbols errors on cygwin)

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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
This commit is contained in:
Paolo Carlini 2007-11-09 15:54:33 +00:00 committed by Paolo Carlini
parent 76e910c6b7
commit 18f310b7d3
3 changed files with 32 additions and 5 deletions
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7
libstdc++-v3/ChangeLog
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@ -1,3 +1,10 @@
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.
2007-11-08 Paolo Carlini <pcarlini@suse.de>
* config/io/basic_file_stdio.cc (fopen_mode): Add modes missing

14
libstdc++-v3/acinclude.m4
View File

@ -763,9 +763,13 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
# 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"
@ -996,6 +1000,11 @@ AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
# 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.
AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
@ -1266,6 +1275,7 @@ AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
# Check for the existence of the <stdbool.h> header.
AC_CHECK_HEADERS(stdbool.h)
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
])

16
libstdc++-v3/configure vendored
View File

@ -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'