1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                          G N A T . O S _ L I B                           --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1995-2021, 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.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
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--  Operating system interface facilities
33
34--  This package contains types and procedures for interfacing to the
35--  underlying OS. It is used by the GNAT compiler and by tools associated
36--  with the GNAT compiler, and therefore works for the various operating
37--  systems to which GNAT has been ported. This package will undoubtedly grow
38--  as new services are needed by various tools.
39
40--  This package tends to use fairly low-level Ada in order to not bring in
41--  large portions of the RTL. For example, functions return access to string
42--  as part of avoiding functions returning unconstrained types.
43
44--  Except where specifically noted, these routines are portable across all
45--  GNAT implementations on all supported operating systems.
46
47--  See file s-os_lib.ads for full documentation of the interface
48
49with System.OS_Lib;
50
51package GNAT.OS_Lib renames System.OS_Lib;
52