$OpenBSD: patch-coders_png_c,v 1.1 2007/04/08 15:22:50 steven Exp $
--- coders/png.c.orig	Sun Apr  8 09:52:01 2007
+++ coders/png.c	Sun Apr  8 09:52:16 2007
@@ -1707,7 +1707,7 @@ static Image *ReadOnePNGImage(MngInfo *mng_info,
 #endif
 
 #if defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) \
-&& (PNG_LIBPNG_VER >= 10200)
+&& (PNG_LIBPNG_VER >= 10200) && defined(PNG_MMX_CODE_SUPPORTED)
   /* Disable thread-unsafe features of pnggccrd */
   if (png_access_version() >= 10200)
   {
