| // (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 |
| |
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