--- tmclock.c	2005-09-21 18:39:57 +0200
+++ tmclock.c.new	2007-06-16 15:58:26 +0200
@@ -18,8 +18,10 @@
 #include <sys/time.h>
 #else
 #include <time.h>
+#ifdef timezone
 extern long	timezone;	/* should be in <time.h>, but isn't on Sun */
 #endif
+#endif
 
 long	tzone;