fake test for checking build versions

test/optional_xconfig_HACK_TO_LIST_PREDEFINED_MACROS.cpp

@@ -0,0 +1,25 @@
+// Copyright (C) 2015 Andrzej Krzemienski.
+//
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/lib/optional for documentation.
+//
+// You are welcome to contact the author at:
+//  akrzemi1@gmail.com
+
+#include "boost/core/lightweight_test.hpp"
+#include "boost/optional/detail/optional_config.hpp"
+
+int main()
+{
+#if defined(__GNUC__)
+  int empty = 0;
+  BOOST_TEST_EQ(empty, __GNUC__);
+  BOOST_TEST_EQ(empty, __GNUC_MINOR__);
+  BOOST_TEST_EQ(empty, __GNUC_PATCHLEVEL__);
+  BOOST_TEST_EQ(empty, __cplusplus);
+#endif
+  return boost::report_errors();
+}