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-rw-r--r--lib/getopt-core.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/getopt-core.h b/lib/getopt-core.h
index c5dd4936..126ce808 100644
--- a/lib/getopt-core.h
+++ b/lib/getopt-core.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
/* Declarations for getopt (basic, portable features only).
Copyright (C) 1989-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library and is also part of gnulib.