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+--  Ortho front-end specifications.
+--  Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
+--
+--  GHDL 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.
+--
+--  GHDL 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 GCC; see the file COPYING.  If not, write to the Free
+--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+--  02111-1307, USA.
+
+package Ortho_Front is
+   type String_Acc is access String;
+
+   --  Called before decode_option.
+   --  This procedure can only do internal initializations.  It cannot call
+   --  ortho subprograms.
+   procedure Init;
+
+   --  An ortho back-end decodes the command line.  Unknown options may
+   --  be decoded by the user, with this function.
+   --  When an ortho back-end encounter an unknown option, it sets OPT with
+   --  this option and ARG with the next one, if any.
+   --
+   --  DECODE_OPTION must return the number of argument used, ie:
+   --   0 if OPT is unknown.
+   --   1 if OPT is known but ARG is unused.
+   --   2 if OPT is known and ARG used.
+   function Decode_Option (Opt : String_Acc; Arg : String_Acc) return Natural;
+
+   --  Start to parse file FILENAME.
+   --  Return False in case of error.
+   function Parse (Filename : String_Acc) return Boolean;
+end Ortho_Front;