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+--  Configuration generation.
+--  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.
+with Types; use Types;
+with Iirs; use Iirs;
+with GNAT.Table;
+
+package Configuration is
+   package Design_Units is new GNAT.Table
+     (Table_Component_Type => Iir_Design_Unit,
+      Table_Index_Type => Natural,
+      Table_Low_Bound => 1,
+      Table_Initial => 16,
+      Table_Increment => 100);
+
+   --  Get the top configuration to build a design hierarchy whose top is
+   --  PRIMARY + SECONDARY.
+   --  PRIMARY must designate a configuration declaration or an entity
+   --  declaration.  In the last case, SECONDARY must be null_identifier or
+   --  designates an architecture declaration.
+   --
+   --  creates a list of design unit.
+   --  and return the top configuration.
+   --  Note: this set the Elab_Flag on units.
+   function Configure (Primary_Id : Name_Id; Secondary_Id : Name_Id)
+     return Iir;
+
+   --  Add design unit UNIT (with its dependences) in the design_units table.
+   procedure Add_Design_Unit (Unit : Iir_Design_Unit; From : Iir);
+
+   --  If set, all design units (even package bodies) are loaded.
+   Flag_Load_All_Design_Units : Boolean := True;
+
+   Flag_Build_File_Dependence : Boolean := False;
+end Configuration;