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--- /dev/null
+++ b/lib/canonicalize.h
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+/* Return the canonical absolute name of a given file.
+   Copyright (C) 1996-2004 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; see the file COPYING.
+   If not, write to the Free Software Foundation,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef CANONICALIZE_H_
+# define CANONICALIZE_H_
+
+enum canonicalize_mode_t
+  {
+    /* All path components must exist.  */
+    CAN_EXISTING = 0,
+
+    /* All path components excluding last one must exist.  */
+    CAN_ALL_BUT_LAST = 1,
+
+    /* No requirements on components existence.  */
+    CAN_MISSING = 2
+  };
+typedef enum canonicalize_mode_t canonicalize_mode_t;
+
+char *canonicalize_filename_mode (const char *, canonicalize_mode_t);
+
+# if !HAVE_CANONICALIZE_FILE_NAME
+char *canonicalize_file_name (const char *);
+# endif
+
+#endif /* !CANONICALIZE_H_ */