diff --git a/gnu/lib/libstdc++/config.h b/gnu/lib/libstdc++/config.h
new file mode 100644
index 000000000000..da23dbe43a4f
--- /dev/null
+++ b/gnu/lib/libstdc++/config.h
@@ -0,0 +1 @@
+/* $FreeBSD$ */