new file mode 100644
--- /dev/null
+++ b/liboctave/sysdir.h
@@ -0,0 +1,60 @@
+// sysdir.h                                               -*- C++ -*-
+/*
+
+Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton
+
+This file is part of Octave.
+
+Octave 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.
+
+Octave 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 Octave; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#if !defined (octave_sysdir_h)
+#define octave_sysdir_h 1
+
+// This mess suggested by the autoconf manual.
+
+// unistd.h defines _POSIX_VERSION on POSIX.1 systems.
+
+#ifdef HAVE_UNISTD_H
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+
+#if defined (HAVE_DIRENT_H) || defined (_POSIX_VERSION)
+#include <dirent.h>
+#define NLENGTH(dirent) (strlen((dirent)->d_name))
+#else
+#define dirent direct
+#define NLENGTH(dirent) ((dirent)->d_namlen)
+#if defined (HAVE_SYS_NDIR_H)
+#include <sys/ndir.h>
+#endif
+#if defined (HAVE_SYS_DIR_H)
+#include <sys/dir.h>
+#endif
+#if defined (HAVE_NDIR_H)
+#include <ndir.h>
+#endif
+#endif
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/