diff --git a/ext/dl/.cvsignore b/ext/dl/.cvsignore
new file mode 100644
index 0000000000..94a01c4ba7
--- /dev/null
+++ b/ext/dl/.cvsignore
@@ -0,0 +1,7 @@
+Makefile
+mkmf.log
+dlconfig.h
+dlconfig.rb
+*.func
+*.o
+*~