+#undef BOOST_GCC_VERSION
+#undef BOOST_GCC_CXX11
+#undef BOOST_GCC
+#undef BOOST_FALLTHROUGH
+
+// Broken in all versions up to 17 (newer versions not tested)
+#if (__INTEL_COMPILER <= 1700) && !defined(BOOST_NO_CXX14_CONSTEXPR)
+# define BOOST_NO_CXX14_CONSTEXPR