From 1886dec556d069a80b575a0236dc5af559c35e2c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=BChnel?= <kuhnel@google.com>
Date: Fri, 17 Jan 2020 10:18:28 +0100
Subject: [PATCH] creating a clean build folder

---
 scripts/run_buildkite.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/scripts/run_buildkite.sh b/scripts/run_buildkite.sh
index f1e9948..b8b848d 100755
--- a/scripts/run_buildkite.sh
+++ b/scripts/run_buildkite.sh
@@ -17,7 +17,12 @@ set -eux
 
 #folder where this script is stored.
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
-export WORKSPACE=$BUILDKITE_BUILD_PATH
+export WORKSPACE=${BUILDKITE_BUILD_PATH}
+
+# create a clean build folder
+BUILD_DIR=${BUILDKITE_BUILD_PATH}/build
+rm -rf ${BUILD_DIR} || true
+mkdir -p ${BUILD_DIR}
 
 echo "--- CMake"
 ${DIR}/run_cmake.sh