From 9173ba22a9ff70697cea92356b9b96cdff71e4ca Mon Sep 17 00:00:00 2001
From: Feng Xiao <xfxyjwf@gmail.com>
Date: Tue, 2 Dec 2014 15:28:11 -0800
Subject: Get rid of some build warnings.

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

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 58c1bf37..bd5b1959 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,6 +46,7 @@ AC_PROG_CC
 AC_PROG_CXX
 AC_LANG([C++])
 ACX_USE_SYSTEM_EXTENSIONS
+AM_PROG_AR
 AM_CONDITIONAL(GCC, test "$GCC" = yes)   # let the Makefile know if we're gcc
 
 # test_util.cc takes forever to compile with GCC and optimization turned on.
-- 
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