--- configure.orig	2015-09-13 07:49:05.000000000 +0000
+++ configure
@@ -5682,7 +5682,7 @@ if test x${use_bundled_zlib} = xyes; the
     extra_libs="zlib/libz.a"
     mkdir -p zlib
 else
-    extra_libs="-lz"
+    extra_ldflags="-lz"
 fi
 
 if test x${windows_os} = xyes; then