From f149adaeb7f6ea23aa09a8777a966420815bada1 Mon Sep 17 00:00:00 2001
From: Fabian Greffrath
Date: Mon, 24 Mar 2014 13:43:24 +0100
Subject: Fix libpng detection for static libraries

---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 04ad2865..4d63d1e0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,7 +86,7 @@ AC_SDL_MAIN_WORKAROUND([
         [Build without libpng @<:@default=check@:>@]),
     [],
     [
-        AC_CHECK_LIB(png, png_get_io_ptr)
+        AC_CHECK_LIB(png, png_get_io_ptr, [], [], -lz)
     ])
     AC_CHECK_LIB(m, log)
 
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