From b0c460146581b87fb9539bc79e0e7dbad7ef9897 Mon Sep 17 00:00:00 2001
From: Fredrik Fornwall <fredrik@fornwall.net>
Date: Tue, 2 Aug 2016 07:50:02 -0400
Subject: [PATCH] Fix use of unbound variable

---
 build-package.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build-package.sh b/build-package.sh
index 2b4561c8f..4a2918db3 100755
--- a/build-package.sh
+++ b/build-package.sh
@@ -680,7 +680,7 @@ termux_setup_golang () {
 
 source $TERMUX_PKG_BUILDER_SCRIPT
 
-if [ "$TERMUX_PKG_BLACKLISTED_ARCHES" != "${TERMUX_PKG_BLACKLISTED_ARCHES/$TERMUX_ARCH/}" ]; then
+if [ -n "${TERMUX_PKG_BLACKLISTED_ARCHES:=""}" -a "$TERMUX_PKG_BLACKLISTED_ARCHES" != "${TERMUX_PKG_BLACKLISTED_ARCHES/$TERMUX_ARCH/}" ]; then
 	echo "Skipping building $TERMUX_PKG_NAME for arch $TERMUX_ARCH"
 	exit 0
 fi