cmake_modules/CheckSourceCompiles.cmake

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#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX17_FLAGS} ${WARN_FLAGS}")

INCLUDE(CheckCXXSourceCompiles)

CHECK_CXX_SOURCE_COMPILES("
    #include <cstdint>
    int main(int, char*[]) { }"
  ORC_CXX_HAS_CSTDINT
)

CHECK_CXX_SOURCE_COMPILES("
    #include <thread>
    int main(void) {
      thread_local int s;
      return s;
    }"
  ORC_CXX_HAS_THREAD_LOCAL
)