diff --git a/.gitmodules b/.gitmodules
index b30006f0a7..4b0899697a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -748,3 +748,8 @@
 	url = ../docca.git
 	fetchRecurseSubmodules = on-demand
 	branch = .
+[submodule "cmake"]
+	path = tools/cmake
+	url = ../cmake.git
+	fetchRecurseSubmodules = on-demand
+	branch = .
diff --git a/tools/cmake b/tools/cmake
new file mode 160000
index 0000000000..c9a31e1b06
--- /dev/null
+++ b/tools/cmake
@@ -0,0 +1 @@
+Subproject commit c9a31e1b065e1cc11f690851f6f9ab859b99d695