From cf61b5441bd6d7232a50f66f28c1b5c6bbdb1570 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Wed, 5 Nov 2014 11:48:11 -0800
Subject: [PATCH] Don't use bashisms in configure

---
 configure.ac | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 89b856e66..6fdcc22b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -819,9 +819,8 @@ AC_CONFIG_FILES([qa/pull-tester/tests-config.sh],[chmod +x qa/pull-tester/tests-
 dnl boost's m4 checks do something really nasty: they export these vars. As a
 dnl result, they leak into secp256k1's configure and crazy things happen.
 dnl Until this is fixed upstream and we've synced, we'll just un-export them.
-export -n CPPFLAGS
-export -n LIBS
-export -n LDFLAGS
+unset CPPFLAGS
+unset LDFLAGS
 ac_configure_args="${ac_configure_args} --disable-shared --with-pic"
 AC_CONFIG_SUBDIRS([src/secp256k1])