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--- /dev/null
+++ b/src/ov-mex-fcn.h
@@ -0,0 +1,118 @@
+/*
+
+Copyright (C) 1996, 1997 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA.
+
+*/
+
+#if !defined (octave_mex_function_h)
+#define octave_mex_function_h 1
+
+#include <string>
+
+#include "oct-shlib.h"
+
+#include "ov-fcn.h"
+#include "ov-builtin.h"
+#include "ov-typeinfo.h"
+
+class octave_shlib;
+
+class octave_value;
+class octave_value_list;
+
+// Dynamically-linked functions.
+
+class
+octave_mex_function : public octave_function
+{
+public:
+
+  octave_mex_function (void) { }
+
+  octave_mex_function (void *fptr, bool fmex, const octave_shlib& shl,
+		       const std::string& nm = std::string ());
+
+  ~octave_mex_function (void);
+
+  octave_value subsref (const std::string&,
+			const std::list<octave_value_list>&)
+    {
+      panic_impossible ();
+      return octave_value ();
+    }
+
+  octave_value_list subsref (const std::string& type,
+			     const std::list<octave_value_list>& idx,
+			     int nargout);
+
+  octave_function *function_value (bool = false) { return this; }
+
+  void mark_fcn_file_up_to_date (const octave_time& t) { t_checked = t; }
+
+  std::string fcn_file_name (void) const;
+
+  octave_time time_parsed (void) const;
+
+  octave_time time_checked (void) const { return t_checked; }
+
+  bool is_system_fcn_file (void) const { return system_fcn_file; }
+
+  bool is_builtin_function (void) const { return false; }
+
+  bool is_mex_function (void) const { return true; }
+
+  octave_value_list
+  do_multi_index_op (int nargout, const octave_value_list& args);
+
+private:
+
+  void *mex_fcn_ptr;
+
+  bool have_fmex;
+
+  octave_shlib sh_lib;
+
+  // The time the file was last checked to see if it needs to be
+  // parsed again.
+  mutable octave_time t_checked;
+
+  // True if this function came from a file that is considered to be a
+  // system function.  This affects whether we check the time stamp
+  // on the file to see if it has changed.
+  bool system_fcn_file;
+
+  // No copying!
+
+  octave_mex_function (const octave_mex_function& fn);
+
+  octave_mex_function& operator = (const octave_mex_function& fn);
+
+  DECLARE_OCTAVE_ALLOCATOR
+
+  DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA
+};
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/