cmake

[awesomized/libmemcached] / CMake / CheckStdatomic.cmake

diff --git a/CMake/CheckStdatomic.cmake b/CMake/CheckStdatomic.cmake
new file mode 100644 (file)
index 0000000..cd9953b
--- /dev/null
+++ b/CMake/CheckStdatomic.cmake
@@ -0,0 +1,21 @@
+include(CheckCSourceRuns)
+include(CheckCXXSourceRuns)
+
+# check for C11 stdatomic and C++11 std::atomic, set HAVE_C_STDATOMIC and/or HAVE_CXX_STDATOMIC
+function(check_stdatomic)
+    check_cxx_source_runs(
+            "#include <atomic>
+            int main() {
+                std::atomic<int> i(0);
+                return atomic_fetch_add(&i,1);
+            }"
+            HAVE_CXX_STDATOMIC)
+    check_c_source_runs(
+            "#include <stdatomic.h>
+            int main() {
+                atomic_int i;
+                atomic_init(&i, 0);
+                return atomic_fetch_add(&i,1);
+            }"
+            HAVE_C_STDATOMIC)
+endfunction(    )