From e70254bad52bed809105a6c56e2f1e52643d329c Mon Sep 17 00:00:00 2001
From: Keith Winstein <keithw@mit.edu>
Date: Mon, 30 Apr 2012 14:58:53 -0400
Subject: [PATCH] Add AM_PROG_AR for automake 1.12 (closes #250)

---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index 215cf57..aed8604 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,6 +17,10 @@ AC_PATH_PROG([PROTOC], [protoc], [])
 AS_IF([test x"$PROTOC" = x],
   [AC_MSG_ERROR([cannot find protoc, the Protocol Buffers compiler])])
 
+# automake 1.12 seems to require this, but automake 1.11 doesn't recognize it
+m4_pattern_allow([AM_PROG_AR])
+AM_PROG_AR
+
 WARNING_CXXFLAGS=""
 PICKY_CXXFLAGS=""
 AC_ARG_ENABLE([compile-warnings],