$NetBSD: patch-ah,v 1.1 2010/02/11 20:43:49 asau Exp $

--- library/system/sys.c.orig	2008-05-23 17:16:13.000000000 +0400
+++ library/system/sys.c	2009-04-20 13:00:04.000000000 +0400
@@ -97,6 +97,10 @@
 #if HAVE_TIME_H
 #include <time.h>
 #endif
+#if !HAVE_DAYLIGHT
+time_t _daylight_() { time_t t = time(NULL); return localtime(&t)->tm_gmtoff; }
+#define daylight _daylight_()
+#endif
 #if HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif