$NetBSD: patch-ac,v 1.2 1998/08/07 10:40:48 agc Exp $

--- sources/picbuf.c.orig	Thu Jul  9 11:36:03 1998
+++ sources/picbuf.c	Thu Jul  9 11:36:56 1998
@@ -44,4 +44,5 @@
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <math.h>
 #include "bresnham.h"