#ifdef SILC_HAVE_PTHREAD
/* For pthreads rwlock support */
#ifndef _XOPEN_SOURCE
-#define _XOPEN_SOURCE 500
+#define _XOPEN_SOURCE 600
#else
-#ifdef _XOPEN_SOURCE < 500
+#ifdef _XOPEN_SOURCE < 600
#define _XOPEN_SOURCE_SAVE _XOPEN_SOURCE
#undef _XOPEN_SOURCE
-#define _XOPEN_SOURCE 500
-#endif /* _XOPEN_SOURCE < 500 */
+#define _XOPEN_SOURCE 600
+#endif /* _XOPEN_SOURCE < 600 */
#endif /* _XOPEN_SOURCE */
#endif /* SILC_HAVE_PTHREAD */