--- otherlibs/graph/open.c.orig	Fri Feb 11 18:00:12 2000
+++ otherlibs/graph/open.c	Fri Feb 11 17:59:18 2000
@@ -13,6 +13,7 @@
 /* $Id: open.c,v 1.12 1999/11/18 13:33:53 xleroy Exp $ */
 
 #include <fcntl.h>
+#include <unistd.h>
 #include <signal.h>
 #include "libgraph.h"
 #include <alloc.h>