scripts/getver.sh: Use 'git-rev-parse' to detect if tree lies in Git repository

Path to the Git repository directory can be overriden by using the '$GIT_DIR'
environment variable. This patch improves detection of Git repository by using
'git-rev-parse', which respects '$GIT_DIR' environment variable, instead of just
checking the existence of '.git' directory.

Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@49165 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/scripts/getver.sh b/scripts/getver.sh
index 4643ca6..6cf7797 100755 (executable)
--- a/scripts/getver.sh
+++ b/scripts/getver.sh
@@ -17,7 +17,7 @@ try_svn() {
 }
 
 try_git() {
-       [ -e .git ] || return 1
+       git rev-parse --git-dir >/dev/null 2>&1 || return 1
        REV="$(git log | grep -m 1 git-svn-id | awk '{ gsub(/.*@/, "", $0); print $1 }')"
        REV="${REV:+r$REV}"
        [ -n "$REV" ]