$NetBSD: patch-ab,v 1.1 2006/08/22 15:19:45 joerg Exp $

--- util.c.orig	2006-08-22 17:20:22.000000000 +0000
+++ util.c
@@ -79,7 +79,7 @@ zphoto_wprintf (const char *fmt, ...)
     va_end(args);
 }
 
-#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
 /*
  * They have the declaration of vasprintf in stdio.h
  */