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