From b945564afc276a3a60a6252edadbfe71cdf4f65f Mon Sep 17 00:00:00 2001
From: Fabian Greffrath
Date: Wed, 26 Mar 2014 13:14:11 +0100
Subject: Add explicit check for libz

Fixes static linking and libpng won't link without it anyway.---
 configure.ac | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 4d63d1e0..a9c3d8cb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,7 +86,8 @@ AC_SDL_MAIN_WORKAROUND([
         [Build without libpng @<:@default=check@:>@]),
     [],
     [
-        AC_CHECK_LIB(png, png_get_io_ptr, [], [], -lz)
+        AC_CHECK_LIB(z, zlibVersion)
+        AC_CHECK_LIB(png, png_get_io_ptr)
     ])
     AC_CHECK_LIB(m, log)
 
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