$NetBSD$

--- util.c.orig	2005-03-01 14:58:18.000000000 +0000
+++ util.c
@@ -5,6 +5,7 @@
 #include <sys/stat.h>
 #include <sys/file.h>	/* needed by HP-UX */
 #include <fcntl.h>	/* needed by HP-UX */
+#include <unistd.h>	/* needed by NetBSD */
 #include "gen.h"
 #include "util.h"
 #include "paths.h"
