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Test for __cxa_thread_atexit_impl when cross-compiling libstdc++ for GNU targets. 

I noticed that when testing glibc with a cross compiler I got

UNSUPPORTED: nptl/tst-thread_local1

because the libstdc++-v3 configuration for cross compiling defaulted
to __cxa_thread_atexit_impl not being available.  This patch fixes
GLIBCXX_CROSSCONFIG to run the same test (for the case covering
targets with glibc) for __cxa_thread_atexit_impl as for native
compilation, just as it runs most of the other tests done for native
compilation (for these targets, it's not possible to build libstdc++
without already having built libc, so link tests are OK).

Tested with no regressions for cross to arm-none-linux-gnueabi.

	* crossconfig.m4 (GLIBCXX_CROSSCONFIG) <*-linux* | *-uclinux* |
	*-gnu* | *-kfreebsd*-gnu | *-knetbsd*-gnu | *-cygwin*>: Check for
	__cxa_thread_atexit_impl.
	* configure: Regenerate.

From-SVN: r228695
This commit is contained in:
Joseph Myers 2015-10-11 23:34:28 +01:00 committed by Joseph Myers
parent d52c212f45
commit 3c97fe777c
3 changed files with 19 additions and 0 deletions
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7
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,10 @@
2015-10-11 Joseph Myers <joseph@codesourcery.com>
* crossconfig.m4 (GLIBCXX_CROSSCONFIG) <*-linux* | *-uclinux* |
*-gnu* | *-kfreebsd*-gnu | *-knetbsd*-gnu | *-cygwin*>: Check for
__cxa_thread_atexit_impl.
* configure: Regenerate.
2015-10-09 Jonathan Wakely <jwakely@redhat.com>
* include/experimental/erase_if.h: Move to ...

11
libstdc++-v3/configure vendored
View File

@ -58893,6 +58893,17 @@ $as_echo "$gcc_cv_have_tls" >&6; }
$as_echo "#define HAVE_TLS 1" >>confdefs.h
fi
for ac_func in __cxa_thread_atexit_impl
do :
ac_fn_c_check_func "$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

1
libstdc++-v3/crossconfig.m4
View File

@ -156,6 +156,7 @@ case "${host}" in
GLIBCXX_CHECK_STDLIB_SUPPORT
AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1)
GCC_CHECK_TLS
AC_CHECK_FUNCS(__cxa_thread_atexit_impl)
AM_ICONV
;;
*-mingw32*)