--- gawk-3.1.2/custom.h.orig	Mon Oct 28 09:16:12 2002
+++ gawk-3.1.2/custom.h	Tue Jun  3 12:33:04 2003
@@ -95,3 +95,9 @@
 #ifdef USE_INCLUDED_STRFTIME
 #undef HAVE_STRFTIME
 #endif
+
+/* For HP/UX with gcc */
+#ifdef hpux
+#define HAVE_TZSET 1
+#define _TZSET 1
+#endif