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when testing for GCC's atomic builtins, try to link too (see bug #1844128); also more closely mirror wx's use by using unsigned int and not int for tests

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50466 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Václav Slavík 2007-12-04 15:29:17 +00:00
parent dc0c395d83
commit 9dcff96ba9
2 changed files with 11 additions and 9 deletions
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4
build/aclocal/atomic_builtins.m4
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@ -8,10 +8,10 @@ AC_DEFUN([WX_ATOMIC_BUILTINS],
if test -n "$GCC"; then
AC_MSG_CHECKING([for __sync_fetch_* builtins])
AC_CACHE_VAL(wx_cv_cc_gcc_atomic_builtins, [
AC_TRY_COMPILE(
AC_TRY_LINK(
[],
[
int value=0;
unsigned int value=0;
__sync_fetch_and_add(&value, 1);
__sync_sub_and_fetch(&value, 1);
],

16
configure vendored
View File

@ -1,5 +1,5 @@
#! /bin/sh
# From configure.in Id: configure.in 50226 2007-11-24 19:11:19Z PC .
# From configure.in Id: configure.in 50303 2007-11-28 06:46:25Z PC .
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.61 for wxWidgets 2.9.0.
#
@ -24789,7 +24789,7 @@ int
main ()
{
int value=0;
unsigned int value=0;
__sync_fetch_and_add(&value, 1);
__sync_sub_and_fetch(&value, 1);
@ -24797,14 +24797,14 @@ main ()
return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (ac_try="$ac_compile"
rm -f conftest.$ac_objext conftest$ac_exeext
if { (ac_try="$ac_link"
case "(($ac_try" in
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
*) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
(eval "$ac_compile") 2>conftest.er1
(eval "$ac_link") 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
@ -24813,7 +24813,8 @@ eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
(exit $ac_status); } && {
test -z "$ac_cxx_werror_flag" ||
test ! -s conftest.err
} && test -s conftest.$ac_objext; then
} && test -s conftest$ac_exeext &&
$as_test_x conftest$ac_exeext; then
wx_cv_cc_gcc_atomic_builtins=yes
else
echo "$as_me: failed program was:" >&5
@ -24822,7 +24823,8 @@ sed 's/^/| /' conftest.$ac_ext >&5
wx_cv_cc_gcc_atomic_builtins=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
conftest$ac_exeext conftest.$ac_ext
fi