Mesa (master): mesa: don't call git if it's not git repository

[Ian Romanick]

Module: Mesa
Branch: master
Commit: a041525ed9718a0f48f402a6161fafe857cc4ce4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a041525ed9718a0f48f402a6161fafe857cc4ce4

Author: Marcin Slusarz <marcin.slusarz at gmail.com>
Date:   Thu May  5 22:37:22 2011 +0200

mesa: don't call git if it's not git repository

Reviewed-by: Dan Nicholson <dbn.lists at gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

---

 bin/extract_git_sha1 |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/bin/extract_git_sha1 b/bin/extract_git_sha1
index 5e635d4..8283870 100755
--- a/bin/extract_git_sha1
+++ b/bin/extract_git_sha1
@@ -3,6 +3,10 @@ if [ ! -f src/mesa/main/git_sha1.h ]; then
 	touch src/mesa/main/git_sha1.h
 fi
 
+if [ ! -d .git ]; then
+	exit
+fi
+
 if which git > /dev/null; then
     # Extract the 7-digit "short" SHA1 for the current HEAD, convert
     # it to a string, and wrap it in a #define.  This is used in