diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..8566a24
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "glcxx"]
+	path = glcxx
+	url = git://github.com/holtrop/glcxx.git
diff --git a/glcxx b/glcxx
new file mode 160000
index 0000000..c55c2ae
--- /dev/null
+++ b/glcxx
@@ -0,0 +1 @@
+Subproject commit c55c2ae3b58d621d3127af7ed5980f7055cba486