--- defines.h.in.orig	2006-07-16 11:48:28.000000000 +1000
+++ defines.h.in	2011-08-20 09:14:34.000000000 +1000
@@ -6,8 +6,8 @@
 /* Define to 1 if you have the `m' library (-lm). */
 #undef HAVE_LIBM
 
-/* Define to 1 if you have the `png12' library (-lpng12). */
-#undef HAVE_LIBPNG12
+/* Define to 1 if you have the `png' library (-lpng). */
+#undef HAVE_LIBPNG
 
 /* Define to 1 if you have the `z' library (-lz). */
 #undef HAVE_LIBZ