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 72fdb8eb37a140d738c772c73b79a0ec8d499dbe..3dc25c8dcdacb2d925cbb9de9e16aaefb050b2d5 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'