| // (C) Copyright John Maddock 2001 - 2003. | |
| // Use, modification and distribution are subject to the | |
| // Boost Software License, Version 1.0. (See accompanying file | |
| // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
| // See http://www.boost.org for most recent version. | |
| // All POSIX feature tests go in this file, | |
| // Note that we test _POSIX_C_SOURCE and _XOPEN_SOURCE as well | |
| // _POSIX_VERSION and _XOPEN_VERSION: on some systems POSIX API's | |
| // may be present but none-functional unless _POSIX_C_SOURCE and | |
| // _XOPEN_SOURCE have been defined to the right value (it's up | |
| // to the user to do this *before* including any header, although | |
| // in most cases the compiler will do this for you). | |
| # if defined(BOOST_HAS_UNISTD_H) | |
| # include <unistd.h> | |
| // XOpen has <nl_types.h>, but is this the correct version check? | |
| # if defined(_XOPEN_VERSION) && (_XOPEN_VERSION >= 3) | |
| # define BOOST_HAS_NL_TYPES_H | |
| # endif | |
| // POSIX version 6 requires <stdint.h> | |
| # if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 200100) | |
| # define BOOST_HAS_STDINT_H | |
| # endif | |
| // POSIX version 2 requires <dirent.h> | |
| # if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 199009L) | |
| # define BOOST_HAS_DIRENT_H | |
| # endif | |
| // POSIX version 3 requires <signal.h> to have sigaction: | |
| # if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 199506L) | |
| # define BOOST_HAS_SIGACTION | |
| # endif | |
| // POSIX defines _POSIX_THREADS > 0 for pthread support, | |
| // however some platforms define _POSIX_THREADS without | |
| // a value, hence the (_POSIX_THREADS+0 >= 0) check. | |
| // Strictly speaking this may catch platforms with a | |
| // non-functioning stub <pthreads.h>, but such occurrences should | |
| // occur very rarely if at all. | |
| # if defined(_POSIX_THREADS) && (_POSIX_THREADS+0 >= 0) && !defined(BOOST_HAS_WINTHREADS) && !defined(BOOST_HAS_MPTASKS) | |
| # define BOOST_HAS_PTHREADS | |
| # endif | |
| // BOOST_HAS_NANOSLEEP: | |
| // This is predicated on _POSIX_TIMERS or _XOPEN_REALTIME: | |
| # if (defined(_POSIX_TIMERS) && (_POSIX_TIMERS+0 >= 0)) \ | |
| || (defined(_XOPEN_REALTIME) && (_XOPEN_REALTIME+0 >= 0)) | |
| # define BOOST_HAS_NANOSLEEP | |
| # endif | |
| // BOOST_HAS_CLOCK_GETTIME: | |
| // This is predicated on _POSIX_TIMERS (also on _XOPEN_REALTIME | |
| // but at least one platform - linux - defines that flag without | |
| // defining clock_gettime): | |
| # if (defined(_POSIX_TIMERS) && (_POSIX_TIMERS+0 >= 0)) | |
| # define BOOST_HAS_CLOCK_GETTIME | |
| # endif | |
| // BOOST_HAS_SCHED_YIELD: | |
| // This is predicated on _POSIX_PRIORITY_SCHEDULING or | |
| // on _POSIX_THREAD_PRIORITY_SCHEDULING or on _XOPEN_REALTIME. | |
| # if defined(_POSIX_PRIORITY_SCHEDULING) && (_POSIX_PRIORITY_SCHEDULING+0 > 0)\ | |
| || (defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING+0 > 0))\ | |
| || (defined(_XOPEN_REALTIME) && (_XOPEN_REALTIME+0 >= 0)) | |
| # define BOOST_HAS_SCHED_YIELD | |
| # endif | |
| // BOOST_HAS_GETTIMEOFDAY: | |
| // BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE: | |
| // These are predicated on _XOPEN_VERSION, and appears to be first released | |
| // in issue 4, version 2 (_XOPEN_VERSION > 500). | |
| // Likewise for the functions log1p and expm1. | |
| # if defined(_XOPEN_VERSION) && (_XOPEN_VERSION+0 >= 500) | |
| # define BOOST_HAS_GETTIMEOFDAY | |
| # if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE+0 >= 500) | |
| # define BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE | |
| # endif | |
| # ifndef BOOST_HAS_LOG1P | |
| # define BOOST_HAS_LOG1P | |
| # endif | |
| # ifndef BOOST_HAS_EXPM1 | |
| # define BOOST_HAS_EXPM1 | |
| # endif | |
| # endif | |
| # endif | |