/* Multi-thread support */
#undef SILC_THREADS
-#undef SILC_HAVE_PTHREAD
-/* IPv6 support */
+/* These can be defined only on other than Win32 systems */
+#ifndef SILC_WIN32
+#undef SILC_HAVE_PTHREAD
#undef HAVE_IPV6
+#endif
/* Default paths */
#undef SILC_ETCDIR