gcc/ada/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) 1992-2023, 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 --  This package defines some system dependent parameters for GNAT. These
  27 --  are parameters that are relevant to the host machine on which the
  28 --  compiler is running, and thus this package is part of the compiler.
  29
  30 with Types;
  31
  32 package Hostparm is
  33
  34    ---------------------
  35    -- HOST Parameters --
  36    ---------------------
  37
  38    Direct_Separator : constant Character;
  39    pragma Import (C, Direct_Separator, "__gnat_dir_separator");
  40    Normalized_CWD : constant String := "." & Direct_Separator;
  41    --  Normalized string to access current directory
  42
  43    Max_Line_Length : constant :=
  44      Types.Column_Number'Pred (Types.Column_Number'Last);
  45    --  Maximum source line length. By default we set it to the maximum
  46    --  value that can be supported, which is given by the range of the
  47    --  Column_Number type. We subtract 1 because need to be able to
  48    --  have a valid Column_Number equal to Max_Line_Length to represent
  49    --  the location of a "line too long" error.
  50    --
  51    --  200 is the minimum value required (RM 2.2(15)). The value set here
  52    --  can be reduced by the explicit use of the -gnatyM style switch.
  53
  54    Max_Name_Length : constant := 1024;
  55    --  Maximum length of unit name (including all dots, and " (spec)") and
  56    --  of file names in the library, must be at least Max_Line_Length, but
  57    --  can be larger.
  58
  59    Tag_Errors : constant Boolean := True;
  60    --  If set to true, then brief form error messages will be prefaced by
  61    --  the string "error:". Used as default for Opt.Unique_Error_Tag. Disabled
  62    --  by gnatd_U.
  63
  64    Exclude_Missing_Objects : constant Boolean := True;
  65    --  If set to true, gnatbind will exclude from consideration all
  66    --  non-existent .o files.
  67
  68 end Hostparm;