1/* Copyright (C) 1999-2025 Free Software Foundation, Inc.
 2   This file is part of the GNU C Library.
 3
 4   The GNU C Library is free software; you can redistribute it and/or
 5   modify it under the terms of the GNU Lesser General Public
 6   License as published by the Free Software Foundation; either
 7   version 2.1 of the License, or (at your option) any later version.
 8
 9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, see
16   <https://www.gnu.org/licenses/>.  */
17
18#ifndef _UNISTD_H
19# error "Never include this file directly.  Use <unistd.h> instead"
20#endif
21
22#include <bits/wordsize.h>
23
24/* This header should define the following symbols under the described
25   situations.  A value `1' means that the model is always supported,
26   `-1' means it is never supported.  Undefined means it cannot be
27   statically decided.
28
29   _POSIX_V7_ILP32_OFF32   32bit int, long, pointers, and off_t type
30   _POSIX_V7_ILP32_OFFBIG  32bit int, long, and pointers and larger off_t type
31
32   _POSIX_V7_LP64_OFF32	   64bit long and pointers and 32bit off_t type
33   _POSIX_V7_LPBIG_OFFBIG  64bit long and pointers and large off_t type
34
35   The macros _POSIX_V6_ILP32_OFF32, _POSIX_V6_ILP32_OFFBIG,
36   _POSIX_V6_LP64_OFF32, _POSIX_V6_LPBIG_OFFBIG, _XBS5_ILP32_OFF32,
37   _XBS5_ILP32_OFFBIG, _XBS5_LP64_OFF32, and _XBS5_LPBIG_OFFBIG were
38   used in previous versions of the Unix standard and are available
39   only for compatibility.
40*/
41
42#if __WORDSIZE == 64
43
44/* We can never provide environments with 32-bit wide pointers.  */
45# define _POSIX_V7_ILP32_OFF32	-1
46# define _POSIX_V7_ILP32_OFFBIG	-1
47# define _POSIX_V6_ILP32_OFF32	-1
48# define _POSIX_V6_ILP32_OFFBIG	-1
49# define _XBS5_ILP32_OFF32	-1
50# define _XBS5_ILP32_OFFBIG	-1
51/* We also have no use (for now) for an environment with bigger pointers
52   and offsets.  */
53# define _POSIX_V7_LPBIG_OFFBIG	-1
54# define _POSIX_V6_LPBIG_OFFBIG	-1
55# define _XBS5_LPBIG_OFFBIG	-1
56
57/* By default we have 64-bit wide `long int', pointers and `off_t'.  */
58# define _POSIX_V7_LP64_OFF64	1
59# define _POSIX_V6_LP64_OFF64	1
60# define _XBS5_LP64_OFF64	1
61
62#else /* __WORDSIZE == 32 */
63
64/* By default we have 32-bit wide `int', `long int', pointers and `off_t'
65   and all platforms support LFS.  */
66# define _POSIX_V7_ILP32_OFF32	1
67# define _POSIX_V7_ILP32_OFFBIG	1
68# define _POSIX_V6_ILP32_OFF32	1
69# define _POSIX_V6_ILP32_OFFBIG	1
70# define _XBS5_ILP32_OFF32	1
71# define _XBS5_ILP32_OFFBIG	1
72
73/* We optionally provide an environment with the above size but an 64-bit
74   side `off_t'.  Therefore we don't define _POSIX_V7_ILP32_OFFBIG.  */
75
76/* We can never provide environments with 64-bit wide pointers.  */
77# define _POSIX_V7_LP64_OFF64	-1
78# define _POSIX_V7_LPBIG_OFFBIG	-1
79# define _POSIX_V6_LP64_OFF64	-1
80# define _POSIX_V6_LPBIG_OFFBIG	-1
81# define _XBS5_LP64_OFF64	-1
82# define _XBS5_LPBIG_OFFBIG	-1
83
84/* CFLAGS.  */
85#define __ILP32_OFFBIG_CFLAGS   "-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
86
87#endif /* __WORDSIZE == 32 */