|
1 // (C) Copyright John Maddock 2001 - 2003. |
|
2 // Use, modification and distribution are subject to the |
|
3 // Boost Software License, Version 1.0. (See accompanying file |
|
4 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
|
5 |
|
6 |
|
7 // See http://www.boost.org for most recent version. |
|
8 |
|
9 // All POSIX feature tests go in this file, |
|
10 // Note that we test _POSIX_C_SOURCE and _XOPEN_SOURCE as well |
|
11 // _POSIX_VERSION and _XOPEN_VERSION: on some systems POSIX API's |
|
12 // may be present but none-functional unless _POSIX_C_SOURCE and |
|
13 // _XOPEN_SOURCE have been defined to the right value (it's up |
|
14 // to the user to do this *before* including any header, although |
|
15 // in most cases the compiler will do this for you). |
|
16 |
|
17 # if defined(BOOST_HAS_UNISTD_H) |
|
18 # include <unistd.h> |
|
19 |
|
20 // XOpen has <nl_types.h>, but is this the correct version check? |
|
21 # if defined(_XOPEN_VERSION) && (_XOPEN_VERSION >= 3) |
|
22 # define BOOST_HAS_NL_TYPES_H |
|
23 # endif |
|
24 |
|
25 // POSIX version 6 requires <stdint.h> |
|
26 # if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 200100) |
|
27 # define BOOST_HAS_STDINT_H |
|
28 # endif |
|
29 |
|
30 // POSIX version 2 requires <dirent.h> |
|
31 # if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 199009L) |
|
32 # define BOOST_HAS_DIRENT_H |
|
33 # endif |
|
34 |
|
35 // POSIX version 3 requires <signal.h> to have sigaction: |
|
36 # if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 199506L) |
|
37 # define BOOST_HAS_SIGACTION |
|
38 # endif |
|
39 // POSIX defines _POSIX_THREADS > 0 for pthread support, |
|
40 // however some platforms define _POSIX_THREADS without |
|
41 // a value, hence the (_POSIX_THREADS+0 >= 0) check. |
|
42 // Strictly speaking this may catch platforms with a |
|
43 // non-functioning stub <pthreads.h>, but such occurrences should |
|
44 // occur very rarely if at all. |
|
45 # if defined(_POSIX_THREADS) && (_POSIX_THREADS+0 >= 0) && !defined(BOOST_HAS_WINTHREADS) && !defined(BOOST_HAS_MPTASKS) |
|
46 # define BOOST_HAS_PTHREADS |
|
47 # endif |
|
48 |
|
49 // BOOST_HAS_NANOSLEEP: |
|
50 // This is predicated on _POSIX_TIMERS or _XOPEN_REALTIME: |
|
51 # if (defined(_POSIX_TIMERS) && (_POSIX_TIMERS+0 >= 0)) \ |
|
52 || (defined(_XOPEN_REALTIME) && (_XOPEN_REALTIME+0 >= 0)) |
|
53 # define BOOST_HAS_NANOSLEEP |
|
54 # endif |
|
55 |
|
56 // BOOST_HAS_CLOCK_GETTIME: |
|
57 // This is predicated on _POSIX_TIMERS (also on _XOPEN_REALTIME |
|
58 // but at least one platform - linux - defines that flag without |
|
59 // defining clock_gettime): |
|
60 # if (defined(_POSIX_TIMERS) && (_POSIX_TIMERS+0 >= 0)) |
|
61 # define BOOST_HAS_CLOCK_GETTIME |
|
62 # endif |
|
63 |
|
64 // BOOST_HAS_SCHED_YIELD: |
|
65 // This is predicated on _POSIX_PRIORITY_SCHEDULING or |
|
66 // on _POSIX_THREAD_PRIORITY_SCHEDULING or on _XOPEN_REALTIME. |
|
67 # if defined(_POSIX_PRIORITY_SCHEDULING) && (_POSIX_PRIORITY_SCHEDULING+0 > 0)\ |
|
68 || (defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING+0 > 0))\ |
|
69 || (defined(_XOPEN_REALTIME) && (_XOPEN_REALTIME+0 >= 0)) |
|
70 # define BOOST_HAS_SCHED_YIELD |
|
71 # endif |
|
72 |
|
73 // BOOST_HAS_GETTIMEOFDAY: |
|
74 // BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE: |
|
75 // These are predicated on _XOPEN_VERSION, and appears to be first released |
|
76 // in issue 4, version 2 (_XOPEN_VERSION > 500). |
|
77 // Likewise for the functions log1p and expm1. |
|
78 # if defined(_XOPEN_VERSION) && (_XOPEN_VERSION+0 >= 500) |
|
79 # define BOOST_HAS_GETTIMEOFDAY |
|
80 # if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE+0 >= 500) |
|
81 # define BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE |
|
82 # endif |
|
83 # ifndef BOOST_HAS_LOG1P |
|
84 # define BOOST_HAS_LOG1P |
|
85 # endif |
|
86 # ifndef BOOST_HAS_EXPM1 |
|
87 # define BOOST_HAS_EXPM1 |
|
88 # endif |
|
89 # endif |
|
90 |
|
91 # endif |
|
92 |
|
93 |
|
94 |
|
95 |