From e7430ddd8f5def8d2903ce7fd44148b66994fbfd Mon Sep 17 00:00:00 2001
From: Ray Ozzie <ray@ozzie.net>
Date: Sat, 26 Mar 2016 14:49:31 -0400
Subject: [PATCH] build fixes

---
 build.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/build.sh b/build.sh
index fe51781..4cde448 100755
--- a/build.sh
+++ b/build.sh
@@ -10,10 +10,10 @@ echo ""
 # and install into the linux folder where apps reside.
 
 INSTALL_DIR="/opt/ttn-gateway"
-mkdir $INSTALL_DIR
+if [ ! -d "$INSTALL_DIR" ]; then mkdir $INSTALL_DIR; fi
 
 BUILD_DIR="$INSTALL_DIR/dev"
-mkdir $BUILD_DIR
+if [ ! -d "$BUILD_DIR" ]; then mkdir $BUILD_DIR; fi
 
 # Switch to where we'll do the builds
 pushd $BUILD_DIR