diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..fae1402
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "3rd/SDL"]
+	path = 3rd/SDL
+	url = https://github.com/libsdl-org/SDL.git
diff --git a/3rd/SDL b/3rd/SDL
new file mode 160000
index 0000000..9f32faf
--- /dev/null
+++ b/3rd/SDL
@@ -0,0 +1 @@
+Subproject commit 9f32fafe216aa549e196fdc00bb8378780250633