--- fontforge-20090923.old/inc/gimage.h	2009-02-23 01:26:06.000000000 +0800
+++ fontforge-20090923/inc/gimage.h	2010-02-09 14:47:04.000000000 +0800
@@ -63,6 +63,11 @@ typedef struct revcmap RevCMap;
 
 enum image_type { it_mono, it_bitmap=it_mono, it_index, it_true, it_rgba };
 
+#if (PNG_LIBPNG_VER >= 10400)
+#define trans_values trans_color
+#define trans trans_alpha
+#endif
+
 struct _GImage {
 /* Format: bitmaps are stored with the most significant bit first in byte units
 	    indexed    images are stored in byte units