From 9748d45b61bfe0314affa32a6f2217a17eb7c6bc Mon Sep 17 00:00:00 2001
From: Loic Dachary <ldachary@redhat.com>
Date: Sat, 7 Mar 2015 17:11:58 +0100
Subject: [PATCH] autogen.sh: do not submodule --force if git does not support
 it

Signed-off-by: Loic Dachary <ldachary@redhat.com>
---
 autogen.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/autogen.sh b/autogen.sh
index a7cc704a20538..99d4f7b446610 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -29,7 +29,8 @@ else
 fi
 
 if test -d ".git" ; then
-  if ! git submodule sync || ! git submodule update --force --init --recursive; then
+  force=$(if git submodule usage 2>&1 | grep --quiet 'update.*--force'; then echo --force ; fi)
+  if ! git submodule sync || ! git submodule update $force --init --recursive; then
     echo "Error: could not initialize submodule projects"
     echo "  Network connectivity might be required."
     exit 1
-- 
2.39.5