From: Nobuhiro Iwamatsu <iwamatsu@debian.org>
Date: Sun, 8 Apr 2012 21:51:13 +0900
Subject: Build with libpng15.

Description: Build with libpng15.
Author: Nobuhiro Iwamatsu <iwamatsu@debian.org>
Origin: vendor
Last-Update: 2012-04-08
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
---
 tools/pngio.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/pngio.h b/tools/pngio.h
index d9f884e..5d3a575 100644
--- a/tools/pngio.h
+++ b/tools/pngio.h
@@ -22,6 +22,10 @@
 
 #include <zlib.h>
 #include <png.h>
+#if PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR >= 4
+  #include <zlib.h>
+#endif
+
 
 typedef struct
 {  char *name;