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acinclude.m4 (GLIBCXX_CHECK_TMPNAM): New check for tmpnam function.

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2014-01-23  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>
	    Steve Ellcey  <sellcey@mips.com>

	* acinclude.m4 (GLIBCXX_CHECK_TMPNAM): New check for tmpnam
	function.
	* configure.ac: Use GLIBCXX_CHECK_TMPNAM.
	* (configure, config.h.in): Regenerate.
	* include/c_global/cstdio: Guard ::tmpnam with _GLIBCXX_USE_TMPNAM

Co-Authored-By: Steve Ellcey <sellcey@mips.com>

From-SVN: r207009
This commit is contained in:
Bernhard Reutner-Fischer 2014-01-23 22:17:15 +01:00 committed by Steve Ellcey
parent 393e8e8b0c
commit 7370b9df65
6 changed files with 119 additions and 0 deletions
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9
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,12 @@
2014-01-23 Bernhard Reutner-Fischer <aldot@gcc.gnu.org>
Steve Ellcey <sellcey@mips.com>
* acinclude.m4 (GLIBCXX_CHECK_TMPNAM): New check for tmpnam
function.
* configure.ac: Use GLIBCXX_CHECK_TMPNAM.
* (configure, config.h.in): Regenerate.
* include/c_global/cstdio: Guard ::tmpnam with _GLIBCXX_USE_TMPNAM
2014-01-23 Jonathan Wakely <jwakely@redhat.com>
* doc/xml/faq.xml (a-how_to_set_paths): Expand FAQ answer.

27
libstdc++-v3/acinclude.m4
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@ -3771,6 +3771,33 @@ AC_DEFUN([GLIBCXX_ENABLE_WERROR], [
GLIBCXX_CONDITIONAL(ENABLE_WERROR, test $enable_werror = yes)
])
dnl
dnl Check whether obsolescent tmpnam is available in <stdio.h>,
dnl and define _GLIBCXX_USE_TMPNAM.
dnl
AC_DEFUN([GLIBCXX_CHECK_TMPNAM], [dnl
dnl
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -fno-exceptions"
dnl
AC_MSG_CHECKING([for tmpnam])
AC_CACHE_VAL(glibcxx_cv_TMPNAM, [dnl
GCC_TRY_COMPILE_OR_LINK(
[#include <stdio.h>],
[char *tmp = tmpnam(NULL);],
[glibcxx_cv_TMPNAM=yes],
[glibcxx_cv_TMPNAM=no])
])
if test $glibcxx_cv_TMPNAM = yes; then
AC_DEFINE(_GLIBCXX_USE_TMPNAM, 1, [Define if obsolescent tmpnam is available in <stdio.h>.])
fi
AC_MSG_RESULT($glibcxx_cv_TMPNAM)
dnl
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
])
dnl
dnl Check to see if sys/sdt.h exists and that it is suitable for use.

3
libstdc++-v3/config.h.in
View File

@ -867,6 +867,9 @@
/* Define if sysctl(), CTL_HW and HW_NCPU are available in <sys/sysctl.h>. */
#undef _GLIBCXX_USE_SYSCTL_HW_NCPU
/* Define if obsolescent tmpnam is available in <stdio.h>. */
#undef _GLIBCXX_USE_TMPNAM
/* Define if code specialized for wchar_t should be used. */
#undef _GLIBCXX_USE_WCHAR_T

75
libstdc++-v3/configure vendored
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@ -20120,6 +20120,81 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
# Check for tmpnam which is obsolescent in POSIX.1-2008
ac_ext=cpp
ac_cpp='$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"
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for tmpnam" >&5
$as_echo_n "checking for tmpnam... " >&6; }
if test "${glibcxx_cv_TMPNAM+set}" = set; then :
$as_echo_n "(cached) " >&6
else
if test x$gcc_no_link = xyes; then
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <stdio.h>
int
main ()
{
char *tmp = tmpnam(NULL);
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
glibcxx_cv_TMPNAM=yes
else
glibcxx_cv_TMPNAM=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
else
if test x$gcc_no_link = xyes; then
as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
fi
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <stdio.h>
int
main ()
{
char *tmp = tmpnam(NULL);
;
return 0;
}
_ACEOF
if ac_fn_cxx_try_link "$LINENO"; then :
glibcxx_cv_TMPNAM=yes
else
glibcxx_cv_TMPNAM=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
fi
if test $glibcxx_cv_TMPNAM = yes; then
$as_echo "#define _GLIBCXX_USE_TMPNAM 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_TMPNAM" >&5
$as_echo "$glibcxx_cv_TMPNAM" >&6; }
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 :

3
libstdc++-v3/configure.ac
View File

@ -213,6 +213,9 @@ GLIBCXX_CHECK_GETTIMEOFDAY
# For clock_gettime, nanosleep and sched_yield support.
GLIBCXX_ENABLE_LIBSTDCXX_TIME
# Check for tmpnam which is obsolescent in POSIX.1-2008
GLIBCXX_CHECK_TMPNAM
AC_LC_MESSAGES
# For hardware_concurrency

2
libstdc++-v3/include/c_global/cstdio
View File

@ -137,7 +137,9 @@ namespace std
using ::sprintf;
using ::sscanf;
using ::tmpfile;
#if _GLIBCXX_USE_TMPNAM
using ::tmpnam;
#endif
using ::ungetc;
using ::vfprintf;
using ::vprintf;