git.m6w6.name Git - m6w6/libmemcached/blob - CMake/CheckStdatomic.cmake

   1 include(CheckCSourceRuns)
   2 include(CheckCXXSourceRuns)
   3
   4 # check for C11 stdatomic and C++11 std::atomic, set HAVE_C_STDATOMIC and/or HAVE_CXX_STDATOMIC
   5 function(check_stdatomic)
   6     check_cxx_source_runs(
   7             "#include <atomic>
   8             int main() {
   9                 std::atomic<int> i(0);
  10                 return atomic_fetch_add(&i,1);
  11             }"
  12             HAVE_CXX_STDATOMIC)
  13     check_c_source_runs(
  14             "#include <stdatomic.h>
  15             int main() {
  16                 atomic_int i;
  17                 atomic_init(&i, 0);
  18                 return atomic_fetch_add(&i,1);
  19             }"
  20             HAVE_C_STDATOMIC)
  21 endfunction(    )