// are available.
//
-#if defined(__GNUC__) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
+#ifndef BOOST_SP_NO_SYNC
+
+#if defined( __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 )
+
+# define BOOST_SP_HAS_SYNC
+
+#elif defined( __IBMCPP__ ) && ( __IBMCPP__ >= 1210 )
+
+# define BOOST_SP_HAS_SYNC
+
+#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
#define BOOST_SP_HAS_SYNC
#undef BOOST_SP_HAS_SYNC
#endif
+#if defined( __sh__ )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
#if defined( __sparc__ )
#undef BOOST_SP_HAS_SYNC
#endif
-#if defined( __INTEL_COMPILER ) && !defined( __ia64__ ) && ( __INTEL_COMPILER < 1100 )
+#if defined( __INTEL_COMPILER ) && !defined( __ia64__ ) && ( __INTEL_COMPILER < 1110 )
+#undef BOOST_SP_HAS_SYNC
+#endif
+
+#if defined(__PATHSCALE__) && ((__PATHCC__ == 4) && (__PATHCC_MINOR__ < 9))
#undef BOOST_SP_HAS_SYNC
#endif
-#endif // __GNUC__ * 100 + __GNUC_MINOR__ >= 401
+#endif
+
+#endif // #ifndef BOOST_SP_NO_SYNC
#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_HAS_SYNC_HPP_INCLUDED