From 247c80aa5e68567c87f49e647ef8e496163d77d9 Mon Sep 17 00:00:00 2001
From: corvid <devnull@localhost>
Date: Thu, 28 May 2015 21:15:21 +0000
Subject: libpng 1.6 series works for me

---
 configure.ac | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 8bc79e98..46c25263 100644
--- a/configure.ac
+++ b/configure.ac
@@ -209,7 +209,10 @@ if test "x$enable_png" = "xyes"; then
 
 dnl Check if the user hasn't set the variable $PNG_CONFIG
   if test -z "$PNG_CONFIG"; then
-    PNG_CONFIG=`which libpng14-config`
+    PNG_CONFIG=`which libpng16-config`
+    if test -z "$PNG_CONFIG"; then
+      PNG_CONFIG=`which libpng14-config`
+    fi
     if test -z "$PNG_CONFIG"; then
       PNG_CONFIG=`which libpng12-config`
     fi
@@ -235,7 +238,7 @@ dnl For debugging and to be user friendly
     AC_MSG_CHECKING([for libpng version])
     png_version=`$PNG_CONFIG --version`
     case $png_version in
-      1.[[024]].*) AC_MSG_RESULT([$png_version]) ;;
+      1.[[0246]].*) AC_MSG_RESULT([$png_version]) ;;
                 *) AC_MSG_RESULT([$png_version (unrecognised version)]) ;;
     esac
 
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