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+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- I N D E P S W --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2004-2007, Free Software Foundation, Inc. --
+-- --
+-- GNAT is free software; you can redistribute it and/or modify it under --
+-- terms of the GNU General Public License as published by the Free Soft- --
+-- ware Foundation; either version 2, or (at your option) any later ver- --
+-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT 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 distributed with GNAT; see file COPYING. If not, write --
+-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, USA. --
+-- --
+-- As a special exception, if other files instantiate generics from this --
+-- unit, or you link this unit with other files to produce an executable, --
+-- this unit does not by itself cause the resulting executable to be --
+-- covered by the GNU General Public License. This exception does not --
+-- however invalidate any other reasons why the executable file might be --
+-- covered by the GNU Public License. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+-- GNATLINK platform-independent switches
+
+-- Used to convert GNAT switches to their platform-dependent switch
+-- equivalent for the underlying linker.
+
+with System.OS_Lib; use System.OS_Lib;
+
+package Indepsw is
+
+ type Switch_Kind is
+ -- Independent switches currently supported
+
+ (Map_File);
+ -- Produce a map file. The path name of the map file to produce
+ -- is given as an argument.
+
+ procedure Convert
+ (Switch : Switch_Kind;
+ Argument : String;
+ To : out String_List_Access);
+ -- Convert Switch to the platform-dependent linker switch (with or without
+ -- additional arguments) To. Issue a warning if Switch is not supported
+ -- for the platform; in this case, To is set to null.
+
+ function Is_Supported (Switch : Switch_Kind) return Boolean;
+ -- Return True for each independent switch supported by the platform
+
+private
+ -- Default warning messages when the switches are not supported by the
+ -- implementation. These are in the spec so that the platform specific
+ -- bodies do not need to redefine them.
+
+ Map_File_Not_Supported : aliased String :=
+ "the underlying linker does not allow the output of a map file";
+
+ No_Support_For : constant array (Switch_Kind) of String_Access :=
+ (Map_File => Map_File_Not_Supported'Access);
+ -- All implementations of procedure Convert should include a case
+ -- statements with a "when others =>" choice that output the default
+ -- warning message:
+
+ -- case Switch is
+ -- when ... =>
+ -- ...
+ -- when others =>
+ -- Write_Str ("warning: ");
+ -- Write_Line (No_Support_For (Switch).all);
+ -- To := null;
+ -- end case;
+
+end Indepsw;