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b168057a | 1 | /* Copyright (C) 1999-2015 Free Software Foundation, Inc. |
28f367c4 UD |
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 | |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
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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 | ||
26b62243 UD |
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 | |
28f367c4 | 31 | |
26b62243 UD |
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 | |
28f367c4 | 34 | |
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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. | |
28f367c4 UD |
40 | */ |
41 | ||
42 | #if __WORDSIZE == 64 | |
43 | ||
44 | /* Environments with 32-bit wide pointers are optionally provided. | |
45 | Therefore following macros aren't defined: | |
26b62243 UD |
46 | # undef _POSIX_V7_ILP32_OFF32 |
47 | # undef _POSIX_V7_ILP32_OFFBIG | |
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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. */ | |
26b62243 | 56 | # define _POSIX_V7_LPBIG_OFFBIG -1 |
28f367c4 UD |
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'. */ | |
26b62243 | 61 | # define _POSIX_V7_LP64_OFF64 1 |
28f367c4 UD |
62 | # define _POSIX_V6_LP64_OFF64 1 |
63 | # define _XBS5_LP64_OFF64 1 | |
64 | ||
65 | #else /* __WORDSIZE == 32 */ | |
66 | ||
67 | /* By default we have 32-bit wide `int', `long int', pointers and `off_t' | |
68 | and all platforms support LFS. */ | |
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69 | # define _POSIX_V7_ILP32_OFF32 1 |
70 | # define _POSIX_V7_ILP32_OFFBIG 1 | |
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71 | # define _POSIX_V6_ILP32_OFF32 1 |
72 | # define _POSIX_V6_ILP32_OFFBIG 1 | |
73 | # define _XBS5_ILP32_OFF32 1 | |
74 | # define _XBS5_ILP32_OFFBIG 1 | |
75 | ||
76 | /* We optionally provide an environment with the above size but an 64-bit | |
26b62243 | 77 | side `off_t'. Therefore we don't define _POSIX_V7_ILP32_OFFBIG. */ |
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78 | |
79 | /* Environments with 64-bit wide pointers can be provided, | |
80 | so these macros aren't defined: | |
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81 | # undef _POSIX_V7_LP64_OFF64 |
82 | # undef _POSIX_V7_LPBIG_OFFBIG | |
28f367c4 UD |
83 | # undef _POSIX_V6_LP64_OFF64 |
84 | # undef _POSIX_V6_LPBIG_OFFBIG | |
85 | # undef _XBS5_LP64_OFF64 | |
86 | # undef _XBS5_LPBIG_OFFBIG | |
87 | and sysconf tests for it at runtime. */ | |
88 | ||
89 | #endif /* __WORDSIZE == 32 */ | |
90 | ||
91 | #define __ILP32_OFF32_CFLAGS "-m31" | |
92 | #define __ILP32_OFFBIG_CFLAGS "-m31 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" | |
93 | #define __ILP32_OFF32_LDFLAGS "-m31" | |
94 | #define __ILP32_OFFBIG_LDFLAGS "-m31" | |
95 | #define __LP64_OFF64_CFLAGS "-m64" | |
96 | #define __LP64_OFF64_LDFLAGS "-m64" |