diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..d49ab5c
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "gtest-lib"]
+	path = googletest
+	url = ../gtest-lib.git
diff --git a/googletest b/googletest
new file mode 160000
index 0000000..b0865c2
--- /dev/null
+++ b/googletest
@@ -0,0 +1 @@
+Subproject commit b0865c2800b6d2eda4d27b2ade82ee8302c788ea