/*

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, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#if !defined (octave_defun_dld_h)
#define octave_defun_dld_h 1

#if defined (octave_defun_h)
#error defun.h and defun-dld.h both included in same file!
#endif

#include "defun-int.h"

// Define a builtin function that may be loaded dynamically at run
// time.
//
// If Octave is not configured for dynamic linking of builtin
// functions, this is the same as DEFUN, except that it will generate
// an extra externally visible function.
//
// The first DECLARE_FUN is for the benefit of the installer function
// and the second is for the definition of the function.

#if defined (MAKE_BUILTINS)

#if ! (defined (OCTAVE_LITE) && defined (WITH_DYNAMIC_LINKING))

#define DEFUN_DLD(name, args_name, nargout_name, doc) \
  DEFUN_INTERNAL (name, args_name, nargout_name, 0, doc)

#endif

#else

#define DEFUN_DLD(name, args_name, nargout_name, doc) \
  DECLARE_FUN (name, args_name, nargout_name); \
  DEFINE_FUN_INSTALLER_FUN (name, doc) \
  DECLARE_FUN (name, args_name, nargout_name)

#if (defined (OCTAVE_LITE) && defined (WITH_DYNAMIC_LINKING))

#define INSTALL_DLD_FCNS(body) \
  bool \
  FSoctave_install_dld_functions (void) \
  { \
    body \
    return true; \
  }

#else

#define INSTALL_DLD_FCNS(body)

#endif

#define INSTALL_DLD_FCN(name) \
  if (! FS ## name ()) \
    return false

#endif

#endif

/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/