Docs: add crossref

[exim.git] / src / OS / os.h-GNU

diff --git a/src/OS/os.h-GNU b/src/OS/os.h-GNU
index 4b222600e56e0e1bae356bf4b3d62fffa81516a8..4fe55fa5ea90fe9d5c68d1831233164e8d7c0538 100644 (file)
--- a/src/OS/os.h-GNU
+++ b/src/OS/os.h-GNU
@@ -1,5 +1,6 @@
 /* Exim: OS-specific C header file for GNU/Hurd */
 /* Copyright (c) The Exim Maintainers 2020 - 2021 */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <features.h>