$OpenBSD: patch-draw_c,v 1.1 2016/09/10 13:03:41 ajacoutot Exp $
--- draw.c.orig	Sat Sep 10 11:14:36 2016
+++ draw.c	Sat Sep 10 11:14:48 2016
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <string.h> /* strlen */
 
 #include "constant.h"
   
