File : hostparm.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- H O S T P A R M --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 1992-2014, 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. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 -- This package defines some system dependent parameters for GNAT. These
33 -- are parameters that are relevant to the host machine on which the
34 -- compiler is running, and thus this package is part of the compiler.
35
36 with Types;
37
38 package Hostparm is
39
40 ---------------------
41 -- HOST Parameters --
42 ---------------------
43
44 Direct_Separator : constant Character;
45 pragma Import (C, Direct_Separator, "__gnat_dir_separator");
46 Normalized_CWD : constant String := "." & Direct_Separator;
47 -- Normalized string to access current directory
48
49 Max_Line_Length : constant :=
50 Types.Column_Number'Pred (Types.Column_Number'Last);
51 -- Maximum source line length. By default we set it to the maximum
52 -- value that can be supported, which is given by the range of the
53 -- Column_Number type. We subtract 1 because need to be able to
54 -- have a valid Column_Number equal to Max_Line_Length to represent
55 -- the location of a "line too long" error.
56 --
57 -- 200 is the minimum value required (RM 2.2(15)). The value set here
58 -- can be reduced by the explicit use of the -gnatyM style switch.
59
60 Max_Name_Length : constant := 1024;
61 -- Maximum length of unit name (including all dots, and " (spec)") and
62 -- of file names in the library, must be at least Max_Line_Length, but
63 -- can be larger.
64
65 Tag_Errors : constant Boolean := False;
66 -- If set to true, then brief form error messages will be prefaced by
67 -- the string "error:". Used as default for Opt.Unique_Error_Tag.
68
69 Exclude_Missing_Objects : constant Boolean := True;
70 -- If set to true, gnatbind will exclude from consideration all
71 -- non-existent .o files.
72
73 end Hostparm;