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configure.ac: Check for __cxa_thread_atexit_impl.

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* configure.ac: Check for __cxa_thread_atexit_impl.
	* libsupc++/atexit_thread.cc (__cxa_thread_atexit): Just forward
	to it if available.
	* config.h.in, configure: Regenerate.

From-SVN: r196276
This commit is contained in:
Jason Merrill 2013-02-25 23:39:04 -05:00 committed by Jason Merrill
parent 9bcb18f6f5
commit bed152e374
5 changed files with 40 additions and 0 deletions
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7
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,10 @@
2013-02-25 Jason Merrill <jason@redhat.com>
* configure.ac: Check for __cxa_thread_atexit_impl.
* libsupc++/atexit_thread.cc (__cxa_thread_atexit): Just forward
to it if available.
* config.h.in, configure: Regenerate.
2013-02-20 Jonathan Wakely <jwakely.gcc@gmail.com>
* include/std/streambuf (basic_streambuf): Use injected class name

3
libstdc++-v3/config.h.in
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@ -658,6 +658,9 @@
/* Define to 1 if you have the `_tanl' function. */
#undef HAVE__TANL
/* Define to 1 if you have the `__cxa_thread_atexit_impl' function. */
#undef HAVE___CXA_THREAD_ATEXIT_IMPL
/* Define as const if the declaration of iconv() needs const. */
#undef ICONV_CONST

12
libstdc++-v3/configure vendored
View File

@ -26700,6 +26700,18 @@ $as_echo "#define HAVE_TLS 1" >>confdefs.h
fi
for ac_func in __cxa_thread_atexit_impl
do :
ac_fn_c_check_func "$LINENO" "__cxa_thread_atexit_impl" "ac_cv_func___cxa_thread_atexit_impl"
if test "x$ac_cv_func___cxa_thread_atexit_impl" = x""yes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE___CXA_THREAD_ATEXIT_IMPL 1
_ACEOF
fi
done
# For iconv support.
if test "X$prefix" = "XNONE"; then

2
libstdc++-v3/configure.ac
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@ -235,6 +235,8 @@ if $GLIBCXX_IS_NATIVE; then
# For TLS support.
GCC_CHECK_TLS
AC_CHECK_FUNCS(__cxa_thread_atexit_impl)
# For iconv support.
AM_ICONV

16
libstdc++-v3/libsupc++/atexit_thread.cc
View File

@ -26,6 +26,20 @@
#include <new>
#include "bits/gthr.h"
#if HAVE___CXA_THREAD_ATEXIT_IMPL
extern "C" int __cxa_thread_atexit_impl (void (*func) (void *),
void *arg, void *d);
extern "C" int
__cxxabiv1::__cxa_thread_atexit (void (*dtor)(void *),
void *obj, void *dso_handle)
_GLIBCXX_NOTHROW
{
return __cxa_thread_atexit_impl (dtor, obj, dso_handle);
}
#else /* HAVE___CXA_THREAD_ATEXIT_IMPL */
namespace {
// One element in a singly-linked stack of cleanups.
struct elt
@ -116,3 +130,5 @@ __cxxabiv1::__cxa_thread_atexit (void (*dtor)(void *), void *obj, void */*dso_ha
return 0;
}
#endif /* HAVE___CXA_THREAD_ATEXIT_IMPL */