--- SDL_image-1.2.12.old/IMG_png.c
+++ SDL_image-1.2.12/IMG_png.c
@@ -323,6 +323,8 @@
 	return(is_PNG);
 }
 
+#define png_read_data sdl_png_read_data
+
 /* Load a PNG type image from an SDL datasource */
 static void png_read_data(png_structp ctx, png_bytep area, png_size_t size)
 {