From 4fd061e4d95dcfc67e933c9f0b0e0e8450f849ab Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc@gmail.com>
Date: Sat, 10 Dec 2011 10:18:47 +0000
Subject: [PATCH] Use a simpler and more reliable command for converting from
 HEAD to commit-ish. Funny thing, they have a command designed for this. ;]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146325 91177308-0d34-0410-b5e6-96231b3b80d8
---
 cmake/modules/VersionFromVCS.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/modules/VersionFromVCS.cmake b/cmake/modules/VersionFromVCS.cmake
index bf5776303dd..a55e9b837f3 100644
--- a/cmake/modules/VersionFromVCS.cmake
+++ b/cmake/modules/VersionFromVCS.cmake
@@ -50,7 +50,7 @@ function(add_version_info_from_vcs VERS)
         set(git_svn_rev "")
       endif()
       execute_process(COMMAND
-                      ${git_executable} show-ref --abbrev --hash --head HEAD
+                      ${git_executable} rev-parse --short HEAD
                       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
                       TIMEOUT 5
                       RESULT_VARIABLE git_result