From ae12275ec83247d3f21c4d146ec2e8e63a61a8be Mon Sep 17 00:00:00 2001
From: David McMahon <djmm@google.com>
Date: Thu, 29 Sep 2016 13:25:08 -0700
Subject: [PATCH] Add a bash version check and some suggested updates for OSX.

---
 hack/update-godep-licenses.sh | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/hack/update-godep-licenses.sh b/hack/update-godep-licenses.sh
index cd21afec790..ca80b4ffd99 100755
--- a/hack/update-godep-licenses.sh
+++ b/hack/update-godep-licenses.sh
@@ -112,6 +112,19 @@ process_content () {
 KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
 source "${KUBE_ROOT}/hack/lib/init.sh"
 
+# Check bash version
+if ((${BASH_VERSINFO[0]}<4)); then
+  echo
+  echo "ERROR: Bash v4+ required."
+  # Extra help for OSX
+  if [[ "$(uname -s)" == "Darwin" ]]; then
+    echo
+    echo "Ensure you are up to date on the following packages:"
+    echo "$ brew install md5sha1sum bash jq"
+  fi
+  echo
+fi
+
 # This variable can be injected, as in the verify script.
 LICENSE_ROOT="${LICENSE_ROOT:-${KUBE_ROOT}}"
 cd "${LICENSE_ROOT}"