make busybox autorebuild on relevant config changes

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6651 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 4 insertions, 0 deletions

diff --git a/include/shell.sh b/include/shell.sh
index 1e60692b9..db4100326 100644
--- a/include/shell.sh
+++ b/include/shell.sh
@@ -28,3 +28,7 @@ trapret() {(
 		}
 	}
 )}
+
+md5s() {
+	which md5sum 2>&- >&- && md5sum "$@" | awk '{print $1}' || md5 "$@"
+}