$NetBSD: patch-ab,v 1.2 2006/01/19 11:18:41 adam Exp $

--- src/opng.h.orig	2006-01-19 08:59:26.000000000 +0100
+++ src/opng.h
@@ -34,9 +34,6 @@
 #include "png.h"
 #include "pngxtern.h"
 
-#if !(PNG_LIBPNG_BUILD_TYPE & PNG_LIBPNG_BUILD_PRIVATE)
-#error This program requires the BUNDLED libpng version 1.2.x-optipng
-#endif
 
 
 #define OPNG_IMAGE_REDUCTIONS_SUPPORTED  /* implemented here */