commit c82aaa4eb1a1c36bf7e2b7ae3c9140d0bf8000b5
Author: Lawrence D'Oliveiro <ldo@geek-central.gen.nz>
Date:   Wed Jan 26 00:48:37 2011 +0000

    fix to build against png-1.5 (thanks to Thomas Klausner)

diff --git a/src/spuunmux.c b/src/spuunmux.c
index 5e565d1..9ad2371 100644
--- a/src/spuunmux.c
+++ b/src/spuunmux.c
@@ -39,6 +39,7 @@
 #include <netinet/in.h>
 
 #include <png.h>
+#include <zlib.h>
 
 #include "rgb.h"
 #include "common.h"
@@ -610,7 +611,7 @@ static int write_png
         png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
         return -1;
       } /*if*/
-    if (setjmp(png_ptr->jmpbuf))
+    if (setjmp(png_jmpbuf(png_ptr)))
       {
         png_destroy_write_struct(&png_ptr, &info_ptr);
         fclose(fp);