check_cxx_source_compiles("
                              #include <type_traits>
                              typedef void F();
                              typedef void G() noexcept;
                              
                              std::enable_if<
                                  !std::is_same<F, G>::value,
                                  int
                              >::type i = 42;
                              
                              int main() { return 0; }
                              "
                              HAS_NO_EXCEPT_TYPE_SIGNATURE_SUPPORT)