do_cmake.sh: use bash

Fixes: http://tracker.ceph.com/issues/39981
Signed-off-by: Nathan Cutler <ncutler@suse.com>
(cherry picked from commit ac8d7c5fd4045d79ab6caacc0b72d64866fcc5c8)

diff --git a/do_cmake.sh b/do_cmake.sh
index b2d7594ae91fd89d4d2a38cef5bb164e78419127..1f0e93b03ca67ea9735b3599765ac888bdf921da 100755 (executable)
--- a/do_cmake.sh
+++ b/do_cmake.sh
@@ -1,4 +1,5 @@
-#!/bin/sh -x
+#!/usr/bin/env bash
+set -x
 git submodule update --init --recursive
 if test -e build; then
     echo 'build dir already exists; rm -rf build and re-run'