--- /dev/null
+/* Copyright (C) 1996-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _REGEXP_H
+#define _REGEXP_H 1
+
+/* The contents of this header file were originally standardized in
+ the Single Unix Specification, Issue 3 (1992). In Issue 4 (1994)
+ the header was marked as TO BE WITHDRAWN, and new applications
+ were encouraged to use <regex.h> instead. It was officially
+ withdrawn from the standard in Issue 6 (aka POSIX.1-2001).
+
+ The GNU C Library provided this header through version 2.22. */
+
+#error "The GNU C Library no longer implements <regexp.h>."
+#error "Please update your code to use <regex.h> instead (no trailing 'p')."
+
+#endif /* regexp.h */