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531f1ae0 | 1 | /* Handle POSIX compilation environments that may or may not be present. |
568035b7 | 2 | Copyright (C) 2012-2013 Free Software Foundation, Inc. |
531f1ae0 JM |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | /* Before including this file, the including file must have included | |
20 | <bits/environments.h> (generally via <unistd.h>) and must have | |
21 | defined the following macros, exactly one of which will be called | |
22 | for each POSIX environment: | |
23 | ||
24 | KNOWN_PRESENT_ENVIRONMENT, for POSIX environments that are known to | |
25 | be supported in this libc. | |
26 | ||
27 | KNOWN_ABSENT_ENVIRONMENT, for POSIX environments that are known not | |
28 | to be supported on this system. | |
29 | ||
30 | UNKNOWN_ENVIRONMENT, for POSIX environments not supported in this | |
31 | libc but possibly supported by another libc on the same system, | |
32 | that can be selected using the same compiler but different | |
33 | compilation options. | |
34 | ||
35 | Each macro has arguments (SC_PREFIX, ENV_PREFIX, SUFFIX). The | |
36 | corresponding argument to sysconf is _SC_##SC_PREFIX##_##SUFFIX. | |
37 | The environment name, as used with getconf, is | |
38 | ENV_PREFIX##_##SUFFIX, and the corresponding macro is the same with | |
39 | a leading "_". | |
40 | ||
41 | In addition, the macros START_ENV_GROUP and END_ENV_GROUP must be | |
42 | defined. These are called with arguments V5, V6, V7 before and | |
43 | after the relevant groups of environments. */ | |
44 | ||
45 | START_ENV_GROUP (V7) | |
46 | ||
47 | #if _POSIX_V7_ILP32_OFF32 > 0 | |
48 | KNOWN_PRESENT_ENVIRONMENT (V7, POSIX_V7, ILP32_OFF32) | |
49 | #elif defined _POSIX_V7_ILP32_OFF32 | |
50 | KNOWN_ABSENT_ENVIRONMENT (V7, POSIX_V7, ILP32_OFF32) | |
51 | #else | |
52 | UNKNOWN_ENVIRONMENT (V7, POSIX_V7, ILP32_OFF32) | |
53 | #endif | |
54 | ||
55 | #if _POSIX_V7_ILP32_OFFBIG > 0 | |
56 | KNOWN_PRESENT_ENVIRONMENT (V7, POSIX_V7, ILP32_OFFBIG) | |
57 | #elif defined _POSIX_V7_ILP32_OFFBIG | |
58 | KNOWN_ABSENT_ENVIRONMENT (V7, POSIX_V7, ILP32_OFFBIG) | |
59 | #else | |
60 | UNKNOWN_ENVIRONMENT (V7, POSIX_V7, ILP32_OFFBIG) | |
61 | #endif | |
62 | ||
63 | #if _POSIX_V7_LP64_OFF64 > 0 | |
64 | KNOWN_PRESENT_ENVIRONMENT (V7, POSIX_V7, LP64_OFF64) | |
65 | #elif defined _POSIX_V7_LP64_OFF64 | |
66 | KNOWN_ABSENT_ENVIRONMENT (V7, POSIX_V7, LP64_OFF64) | |
67 | #else | |
68 | UNKNOWN_ENVIRONMENT (V7, POSIX_V7, LP64_OFF64) | |
69 | #endif | |
70 | ||
71 | #if _POSIX_V7_LPBIG_OFFBIG > 0 | |
72 | KNOWN_PRESENT_ENVIRONMENT (V7, POSIX_V7, LPBIG_OFFBIG) | |
73 | #elif defined _POSIX_V7_LPBIG_OFFBIG | |
74 | KNOWN_ABSENT_ENVIRONMENT (V7, POSIX_V7, LPBIG_OFFBIG) | |
75 | #else | |
76 | UNKNOWN_ENVIRONMENT (V7, POSIX_V7, LPBIG_OFFBIG) | |
77 | #endif | |
78 | ||
79 | END_ENV_GROUP (V7) | |
80 | ||
81 | START_ENV_GROUP (V6) | |
82 | ||
83 | #if _POSIX_V6_ILP32_OFF32 > 0 | |
84 | KNOWN_PRESENT_ENVIRONMENT (V6, POSIX_V6, ILP32_OFF32) | |
85 | #elif defined _POSIX_V6_ILP32_OFF32 | |
86 | KNOWN_ABSENT_ENVIRONMENT (V6, POSIX_V6, ILP32_OFF32) | |
87 | #else | |
88 | UNKNOWN_ENVIRONMENT (V6, POSIX_V6, ILP32_OFF32) | |
89 | #endif | |
90 | ||
91 | #if _POSIX_V6_ILP32_OFFBIG > 0 | |
92 | KNOWN_PRESENT_ENVIRONMENT (V6, POSIX_V6, ILP32_OFFBIG) | |
93 | #elif defined _POSIX_V6_ILP32_OFFBIG | |
94 | KNOWN_ABSENT_ENVIRONMENT (V6, POSIX_V6, ILP32_OFFBIG) | |
95 | #else | |
96 | UNKNOWN_ENVIRONMENT (V6, POSIX_V6, ILP32_OFFBIG) | |
97 | #endif | |
98 | ||
99 | #if _POSIX_V6_LP64_OFF64 > 0 | |
100 | KNOWN_PRESENT_ENVIRONMENT (V6, POSIX_V6, LP64_OFF64) | |
101 | #elif defined _POSIX_V6_LP64_OFF64 | |
102 | KNOWN_ABSENT_ENVIRONMENT (V6, POSIX_V6, LP64_OFF64) | |
103 | #else | |
104 | UNKNOWN_ENVIRONMENT (V6, POSIX_V6, LP64_OFF64) | |
105 | #endif | |
106 | ||
107 | #if _POSIX_V6_LPBIG_OFFBIG > 0 | |
108 | KNOWN_PRESENT_ENVIRONMENT (V6, POSIX_V6, LPBIG_OFFBIG) | |
109 | #elif defined _POSIX_V6_LPBIG_OFFBIG | |
110 | KNOWN_ABSENT_ENVIRONMENT (V6, POSIX_V6, LPBIG_OFFBIG) | |
111 | #else | |
112 | UNKNOWN_ENVIRONMENT (V6, POSIX_V6, LPBIG_OFFBIG) | |
113 | #endif | |
114 | ||
115 | END_ENV_GROUP (V6) | |
116 | ||
117 | START_ENV_GROUP (V5) | |
118 | ||
119 | #if _XBS5_ILP32_OFF32 > 0 | |
120 | KNOWN_PRESENT_ENVIRONMENT (XBS5, XBS5, ILP32_OFF32) | |
121 | #elif defined _XBS5_ILP32_OFF32 | |
122 | KNOWN_ABSENT_ENVIRONMENT (XBS5, XBS5, ILP32_OFF32) | |
123 | #else | |
124 | UNKNOWN_ENVIRONMENT (XBS5, XBS5, ILP32_OFF32) | |
125 | #endif | |
126 | ||
127 | #if _XBS5_ILP32_OFFBIG > 0 | |
128 | KNOWN_PRESENT_ENVIRONMENT (XBS5, XBS5, ILP32_OFFBIG) | |
129 | #elif defined _XBS5_ILP32_OFFBIG | |
130 | KNOWN_ABSENT_ENVIRONMENT (XBS5, XBS5, ILP32_OFFBIG) | |
131 | #else | |
132 | UNKNOWN_ENVIRONMENT (XBS5, XBS5, ILP32_OFFBIG) | |
133 | #endif | |
134 | ||
135 | #if _XBS5_LP64_OFF64 > 0 | |
136 | KNOWN_PRESENT_ENVIRONMENT (XBS5, XBS5, LP64_OFF64) | |
137 | #elif defined _XBS5_LP64_OFF64 | |
138 | KNOWN_ABSENT_ENVIRONMENT (XBS5, XBS5, LP64_OFF64) | |
139 | #else | |
140 | UNKNOWN_ENVIRONMENT (XBS5, XBS5, LP64_OFF64) | |
141 | #endif | |
142 | ||
143 | #if _XBS5_LPBIG_OFFBIG > 0 | |
144 | KNOWN_PRESENT_ENVIRONMENT (XBS5, XBS5, LPBIG_OFFBIG) | |
145 | #elif defined _XBS5_LPBIG_OFFBIG | |
146 | KNOWN_ABSENT_ENVIRONMENT (XBS5, XBS5, LPBIG_OFFBIG) | |
147 | #else | |
148 | UNKNOWN_ENVIRONMENT (XBS5, XBS5, LPBIG_OFFBIG) | |
149 | #endif | |
150 | ||
151 | END_ENV_GROUP (V5) |