| dnl SPDX-License-Identifier: GPL-2.0-or-later | |
| dnl Copyright (c) Linux Test Project, 2016 | |
| AC_DEFUN([LTP_CHECK_ATOMIC_MEMORY_MODEL],[ | |
| AC_MSG_CHECKING([for __atomic_* compiler builtins]) | |
| AC_LINK_IFELSE([AC_LANG_SOURCE([ | |
| int main(void) { | |
| int i = 0, j = 0; | |
| __atomic_add_fetch(&i, 1, __ATOMIC_ACQ_REL); | |
| __atomic_load_n(&i, __ATOMIC_SEQ_CST); | |
| __atomic_store_n(&i, 0, __ATOMIC_RELAXED); | |
| return i; | |
| }])],[has_atomic_mm="yes"]) | |
| if test "x$has_atomic_mm" = xyes; then | |
| AC_DEFINE(HAVE_ATOMIC_MEMORY_MODEL,1, | |
| [Define to 1 if you have the __atomic_* compiler builtins]) | |
| AC_MSG_RESULT(yes) | |
| else | |
| AC_MSG_RESULT(no) | |
| fi | |
| ]) |