1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                              I N D E P S W                               --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 2004-2021, Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
17-- for  more details.  You should have  received  a copy of the GNU General --
18-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
19-- http://www.gnu.org/licenses for a complete copy of the license.          --
20--                                                                          --
21-- GNAT was originally developed  by the GNAT team at  New York University. --
22-- Extensive contributions were provided by Ada Core Technologies Inc.      --
23--                                                                          --
24------------------------------------------------------------------------------
25
26--  GNATLINK platform-independent switches
27
28--  Used to convert GNAT switches to their platform-dependent switch
29--  equivalent for the underlying linker.
30
31with System.OS_Lib; use System.OS_Lib;
32
33package Indepsw is
34
35   type Switch_Kind is
36   --  Independent switches currently supported
37
38     (Map_File);
39      --  Produce a map file. The path name of the map file to produce
40      --  is given as an argument.
41
42   procedure Convert
43     (Switch   : Switch_Kind;
44      Argument : String;
45      To       : out String_List_Access);
46   --  Convert Switch to the platform-dependent linker switch (with or without
47   --  additional arguments) To. Issue a warning if Switch is not supported
48   --  for the platform; in this case, To is set to null.
49
50   function Is_Supported (Switch : Switch_Kind) return Boolean;
51   --  Return True for each independent switch supported by the platform
52
53private
54   --  Default warning messages when the switches are not supported by the
55   --  implementation. These are in the spec so that the platform specific
56   --  bodies do not need to redefine them.
57
58   Map_File_Not_Supported : aliased String :=
59     "the underlying linker does not allow the output of a map file";
60
61   No_Support_For : constant array (Switch_Kind) of String_Access :=
62                      (Map_File => Map_File_Not_Supported'Access);
63   --  All implementations of procedure Convert should include a case
64   --  statements with a "when others =>" choice that output the default
65   --  warning message:
66
67   --   case Switch is
68   --      when ... =>
69   --         ...
70   --      when others =>
71   --         Write_Str ("warning: ");
72   --         Write_Line (No_Support_For (Switch).all);
73   --         To := null;
74   --   end case;
75
76end Indepsw;
77