From bc9fff113080f5913c63d6eecb3c66a6c7307159 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ren=C3=A9=20Nyffenegger?= <mail@renenyffenegger.ch>
Date: Fri, 7 Jul 2017 16:54:11 +0200
Subject: [PATCH] Use AC_ARG_VAR to set ARFLAGS.

The user can set ARFLAGS in the ./configure step with
  ./configure ARFLAGS=...
If he chooses not to do so, ARFLAGS will be set to cr.
---
 configure.ac | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/configure.ac b/configure.ac
index eb102fec8..3497befbd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,6 +18,12 @@ BITCOIN_DAEMON_NAME=zcashd
 BITCOIN_CLI_NAME=zcash-cli
 BITCOIN_TX_NAME=zcash-tx
 
+dnl Unless the user specified ARFLAGS, force it to be cr
+AC_ARG_VAR(ARFLAGS, [Flags for the archiver, defaults to <cr> if not set])
+if test "x${ARFLAGS+set}" != "xset"; then
+  ARFLAGS="cr"
+fi
+
 AC_CANONICAL_HOST
 
 AH_TOP([#ifndef BITCOIN_CONFIG_H])
@@ -911,4 +917,5 @@ echo "  CPPFLAGS      = $CPPFLAGS"
 echo "  CXX           = $CXX"
 echo "  CXXFLAGS      = $CXXFLAGS"
 echo "  LDFLAGS       = $LDFLAGS"
+echo "  ARFLAGS       = $ARFLAGS"
 echo