diff --git a/m4/.gitignore b/m4/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..d6b7ef32c8478a48c3994dcadc86837f4371184d
--- /dev/null
+++ b/m4/.gitignore
@@ -0,0 +1,2 @@
+*
+!.gitignore