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Fix check for HAVE_GCC_ATOMIC_BUILTINS

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This commit is contained in:
Lymia Aluysia
2017-01-17 23:36:27 -06:00
parent a1660983b6
commit 24ba3ab28a
3 changed files with 1 additions and 109 deletions
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configure.ac
-42
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@@ -76,48 +76,6 @@ AC_FUNC_MALLOC
AC_FUNC_SELECT_ARGTYPES
AC_CHECK_FUNCS([floor memset pow select sqrt])
AC_CACHE_CHECK([whether the compiler provides atomic builtins], [ap_cv_atomic_builtins],
[AC_TRY_RUN([
int main()
{
unsigned long val = 1010, tmp, *mem = &val;
if (__sync_fetch_and_add(&val, 1010) != 1010 || val != 2020)
return 1;
tmp = val;
if (__sync_fetch_and_sub(mem, 1010) != tmp || val != 1010)
return 1;
if (__sync_sub_and_fetch(&val, 1010) != 0 || val != 0)
return 1;
tmp = 3030;
if (__sync_val_compare_and_swap(mem, 0, tmp) != 0 || val != tmp)
return 1;
if (__sync_lock_test_and_set(&val, 4040) != 3030)
return 1;
mem = &tmp;
if (__sync_val_compare_and_swap(&mem, &tmp, &val) != &tmp)
return 1;
__sync_synchronize();
if (mem != &val)
return 1;
return 0;
}], [ap_cv_atomic_builtins=yes], [ap_cv_atomic_builtins=no], [ap_cv_atomic_builtins=no])])
if test "x$ap_cv_atomic_builtins" = "xyes"; then
AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS, 1, [Define if compiler provides atomic builtins])
fi
AC_OUTPUT([
Makefile
])