From 14d6babd88ede227c3293a4f5bc363325e527534 Mon Sep 17 00:00:00 2001
From: klutzy <klutzytheklutzy@gmail.com>
Date: Sat, 16 Mar 2013 22:05:07 +0900
Subject: [PATCH] Sync submodule recursively

Submodule may have its own submodules, and the sub-sub-module url may be
changed.
Thus, if `submodule update --recursive` is done without url sync,
sub-sub-module may fail to find appropriate commit.
This patch fixes the problem by `git submodule update` locally
before recursive sync.
---
 configure | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/configure b/configure
index 0103ae80fa35..f035ad7f3ad9 100755
--- a/configure
+++ b/configure
@@ -368,6 +368,14 @@ then
     "${CFG_GIT}" submodule status --recursive
 
     msg "git: submodule update"
+    "${CFG_GIT}" submodule --quiet update --init
+    need_ok "git failed"
+
+    msg "git: submodule foreach sync"
+    "${CFG_GIT}" submodule --quiet foreach --recursive 'if test -e .gitmodules; then git submodule sync; fi'
+    need_ok "git failed"
+
+    msg "git: submodule foreach update"
     "${CFG_GIT}" submodule --quiet update --init --recursive
     need_ok "git failed"