From 5af9dc280fca8323fbc20afa9741b107a51366b4 Mon Sep 17 00:00:00 2001
From: Julian Oes <julian@oes.ch>
Date: Tue, 23 Feb 2016 15:16:04 +0000
Subject: [PATCH] check_submodules: Don't override submodule

Previously make would override a submodule, now it only does submodule
init and override if the submodule is not already checked out.
---
 Tools/check_submodules.sh | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/Tools/check_submodules.sh b/Tools/check_submodules.sh
index bb1ba4d3b5..adc4f88d89 100755
--- a/Tools/check_submodules.sh
+++ b/Tools/check_submodules.sh
@@ -6,18 +6,13 @@
     exit 0
 }
 
-if [ -f src/modules/uavcan/libuavcan/CMakeLists.txt ]
-then
-	echo "Git submodule config valid."
-else
-	git submodule update --init --recursive
-fi
 
 GITSTATUS=$(git status)
 
 function check_git_submodule {
 
-if [ -d $1 ];
+# The .git exists in a submodule if init and update have been done.
+if [ -f $1"/.git" ];
 	then
 	SUBMODULE_STATUS=$(git submodule summary "$1")
 	STATUSRETVAL=$(echo $SUBMODULE_STATUS | grep -A20 -i "$1")
@@ -58,7 +53,7 @@ if [ -d $1 ];
 		fi
 	fi
 else
-	git submodule update --init --recursive;
+	git submodule update --init --recursive $1;
 fi
 
 }