scripts/checkout: update.

- it can be used for update existing git
- add a guide to README.md

Signed-off-by: Yong-iL Joh <yong-il.joh@windriver.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/scripts/checkout b/scripts/checkout
index ec892b3..6963f64 100755
--- a/scripts/checkout
+++ b/scripts/checkout
@@ -5,5 +5,28 @@
 export LANG=C
 MYDIR=$(dirname "$0")
 
+update_git() {
+  _git=$1
+  _cur_dir=`pwd`
+  if [ -d ../${_git} ]; then
+     cd ../${_git}
+     _null=`git status >& /dev/null`
+     _r=$?
+     if [ $_r -eq 0 ]; then
+        git checkout master >& /dev/null
+        git pull            >& /dev/null
+        cd ${_cur_dir}
+     else
+        echo "fatal: Not a git repository"
+        exit 2
+     fi
+  else
+     echo "there is no such directory: $_git "
+     exit 1
+  fi
+}
+
+update_git poky
 $MYDIR/checkout_layer_hash.sh poky
+update_git meta-openembedded
 $MYDIR/checkout_layer_hash.sh meta-openembedded