--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@@ -108,7 +108,7 @@
 libfu_a_DEPENDENCIES = $(libfu_a_LIBADD)
 
 noinst_HEADERS = argmatch.h backupfile.h closeout.h \
-error.h exclude.h filemode.h fnmatch.h fsusage.h \
+dirname.h error.h exclude.h filemode.h fnmatch.h fsusage.h \
 getdate.h getline.h getopt.h group-member.h human.h lchown.h long-options.h \
 makepath.h modechange.h mountlist.h hash.h path-concat.h pathmax.h \
 posixtm.h quotearg.h regex.h safe-read.h save-cwd.h savedir.h strverscmp.h \

new file mode 100644
--- /dev/null
+++ b/lib/dirname.h
@@ -0,0 +1,31 @@
+/*  Copyright (C) 1998 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 DIRNAME_H_
+# define DIRNAME_H_ 1
+
+# ifndef PARAMS
+#  if defined PROTOTYPES || (defined __STDC__ && __STDC__)
+#   define PARAMS(Args) Args
+#  else
+#   define PARAMS(Args) ()
+#  endif
+# endif
+
+char *
+dir_name PARAMS ((const char *path));
+
+#endif /* not DIRNAME_H_ */