1/* Copyright (C) 1999-2020 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/* Environments with 32-bit wide pointers are optionally provided. 
45 Therefore following macros aren't defined: 
46 # undef _POSIX_V7_ILP32_OFF32 
47 # undef _POSIX_V7_ILP32_OFFBIG 
48 # undef _POSIX_V6_ILP32_OFF32 
49 # undef _POSIX_V6_ILP32_OFFBIG 
50 # undef _XBS5_ILP32_OFF32 
51 # undef _XBS5_ILP32_OFFBIG 
52 and users need to check at runtime. */ 
53 
54/* We also have no use (for now) for an environment with bigger pointers 
55 and offsets. */ 
56# define _POSIX_V7_LPBIG_OFFBIG -1 
57# define _POSIX_V6_LPBIG_OFFBIG -1 
58# define _XBS5_LPBIG_OFFBIG -1 
59 
60/* By default we have 64-bit wide `long int', pointers and `off_t'. */ 
61# define _POSIX_V7_LP64_OFF64 1 
62# define _POSIX_V6_LP64_OFF64 1 
63# define _XBS5_LP64_OFF64 1 
64 
65#else /* __WORDSIZE == 32 */ 
66 
67/* We have 32-bit wide `int', `long int' and pointers and all platforms 
68 support LFS. -mx32 has 64-bit wide `off_t'. */ 
69# define _POSIX_V7_ILP32_OFFBIG 1 
70# define _POSIX_V6_ILP32_OFFBIG 1 
71# define _XBS5_ILP32_OFFBIG 1 
72 
73# ifndef __x86_64__ 
74/* -m32 has 32-bit wide `off_t'. */ 
75# define _POSIX_V7_ILP32_OFF32 1 
76# define _POSIX_V6_ILP32_OFF32 1 
77# define _XBS5_ILP32_OFF32 1 
78# endif 
79 
80/* We optionally provide an environment with the above size but an 64-bit 
81 side `off_t'. Therefore we don't define _POSIX_V7_ILP32_OFFBIG. */ 
82 
83/* Environments with 64-bit wide pointers can be provided, 
84 so these macros aren't defined: 
85 # undef _POSIX_V7_LP64_OFF64 
86 # undef _POSIX_V7_LPBIG_OFFBIG 
87 # undef _POSIX_V6_LP64_OFF64 
88 # undef _POSIX_V6_LPBIG_OFFBIG 
89 # undef _XBS5_LP64_OFF64 
90 # undef _XBS5_LPBIG_OFFBIG 
91 and sysconf tests for it at runtime. */ 
92 
93#endif /* __WORDSIZE == 32 */ 
94 
95#define __ILP32_OFF32_CFLAGS "-m32" 
96#define __ILP32_OFF32_LDFLAGS "-m32" 
97#if defined __x86_64__ && defined __ILP32__ 
98# define __ILP32_OFFBIG_CFLAGS "-mx32" 
99# define __ILP32_OFFBIG_LDFLAGS "-mx32" 
100#else 
101# define __ILP32_OFFBIG_CFLAGS "-m32 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" 
102# define __ILP32_OFFBIG_LDFLAGS "-m32" 
103#endif 
104#define __LP64_OFF64_CFLAGS "-m64" 
105#define __LP64_OFF64_LDFLAGS "-m64" 
106