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--- /dev/null
+++ b/lib/strdup.h
@@ -0,0 +1,29 @@
+/* strdup.h -- duplicate a string
+   Copyright (C) 2004 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef STRDUP_H_
+#define STRDUP_H_
+
+/* Get strdup declaration, if available.  */
+#include <string.h>
+
+#if !HAVE_DECL_STRDUP && !defined strdup
+/* Duplicate S, returning an identical malloc'd string.  */
+extern char *strdup (const char *s);
+#endif
+
+#endif /* STRDUP_H_ */