--- GraphicsMagick-1.1.7/coders/png.c~	2004-11-11 00:14:54.000000000 +0100
+++ GraphicsMagick-1.1.7/coders/png.c	2007-02-23 13:01:01.000000000 +0100
@@ -1706,7 +1706,7 @@
      (int)sizeof(unused_chunks)/5);
 #endif
 
-#if defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) \
+#if 0 && defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) \
 && (PNG_LIBPNG_VER >= 10200)
   /* Disable thread-unsafe features of pnggccrd */
   if (png_access_version() >= 10200)