From 0a40080ee1177ff2709114d9199cfb334d6f066c Mon Sep 17 00:00:00 2001
From: Erik Joelsson <erikj@openjdk.org>
Date: Wed, 7 Feb 2018 09:48:43 -0800
Subject: [PATCH] 8196951: jdk build fails with clang: error: no such file or
 directory: '@LIBZ_CFLAGS@'

Reviewed-by: tbell, alanb
---
 make/autoconf/lib-bundled.m4 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/make/autoconf/lib-bundled.m4 b/make/autoconf/lib-bundled.m4
index 8876e170b5..0680a99d17 100644
--- a/make/autoconf/lib-bundled.m4
+++ b/make/autoconf/lib-bundled.m4
@@ -209,6 +209,8 @@ AC_DEFUN_ONCE([LIB_SETUP_ZLIB],
     AC_MSG_ERROR([Invalid value for --with-zlib: ${with_zlib}, use 'system' or 'bundled'])
   fi
 
+  LIBZ_CFLAGS=""
+  LIBZ_LIBS=""
   if test "x$USE_EXTERNAL_LIBZ" = "xfalse"; then
     LIBZ_CFLAGS="$LIBZ_CFLAGS -I$TOPDIR/src/java.base/share/native/libzip/zlib"
   else