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Change AC_COMPILE_IFELSE into AC_LINK_IFELSE for the __sync_{add, sub}_and_fetch() test

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With the Android NDK, __sync_{add,sub}_and_fetch() compile fine for uint64_t,
but the corresponding libgcc function aren't there.
This commit is contained in:
Mike Hommey 2012-03-27 15:03:07 +02:00 committed by Jason Evans
parent 1a0e777024
commit 2cfe6d67ef
1 changed files with 14 additions and 14 deletions
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28
configure.ac
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@ -898,20 +898,20 @@ dnl __GCC_HAVE_SYNC_COMPARE_AND_SWAP_n macros being undefined.
AC_DEFUN([JE_SYNC_COMPARE_AND_SWAP_CHECK],[
AC_CACHE_CHECK([whether to force $1-bit __sync_{add,sub}_and_fetch()],
[je_cv_sync_compare_and_swap_$2],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <stdint.h>
],
[
#ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_$2
{
uint$1_t x$1 = 0;
__sync_add_and_fetch(&x$1, 42);
__sync_sub_and_fetch(&x$1, 1);
}
#else
#error __GCC_HAVE_SYNC_COMPARE_AND_SWAP_$2 is defined, no need to force
#endif
])],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <stdint.h>
],
[
#ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_$2
{
uint$1_t x$1 = 0;
__sync_add_and_fetch(&x$1, 42);
__sync_sub_and_fetch(&x$1, 1);
}
#else
#error __GCC_HAVE_SYNC_COMPARE_AND_SWAP_$2 is defined, no need to force
#endif
])],
[je_cv_sync_compare_and_swap_$2=yes],
[je_cv_sync_compare_and_swap_$2=no])])