diff --git a/extlibs/glm b/extlibs/glm
new file mode 160000
index 0000000..2d4c4b4
--- /dev/null
+++ b/extlibs/glm
@@ -0,0 +1 @@
+Subproject commit 2d4c4b4dd31fde06cfffad7915c2b3006402322f