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-rw-r--r--posix/getopt.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/posix/getopt.h b/posix/getopt.h
index 2b638658e3..d9db3a6b4c 100644
--- a/posix/getopt.h
+++ b/posix/getopt.h
@@ -1,6 +1,8 @@
/* Declarations for getopt.
Copyright (C) 1989-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
+ Unlike the bulk of the getopt implementation, this file is NOT part
+ of gnulib; gnulib also has a getopt.h but it is different.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public