diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..2fcecfd7d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "tools/git2cl"]
+	path = tools/git2cl
+	url = git://repo.or.cz/git2cl.git
diff --git a/tools/git2cl b/tools/git2cl
new file mode 160000
index 000000000..8373c9f74
--- /dev/null
+++ b/tools/git2cl
@@ -0,0 +1 @@
+Subproject commit 8373c9f74993e218a08819cbcdbab3f3564bbeba