libsmbios_c library
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00001 // (C) Copyright John Maddock 2001 - 2003. 00002 // Use, modification and distribution are subject to the 00003 // Boost Software License, Version 1.0. (See accompanying file 00004 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 00005 00006 00007 // See http://www.boost.org for most recent version. 00008 00009 // All POSIX feature tests go in this file, 00010 // Note that we test _POSIX_C_SOURCE and _XOPEN_SOURCE as well 00011 // _POSIX_VERSION and _XOPEN_VERSION: on some systems POSIX API's 00012 // may be present but none-functional unless _POSIX_C_SOURCE and 00013 // _XOPEN_SOURCE have been defined to the right value (it's up 00014 // to the user to do this *before* including any header, although 00015 // in most cases the compiler will do this for you). 00016 00017 # if defined(LIBSMBIOS_HAS_UNISTD_H) 00018 # include <unistd.h> 00019 00020 // XOpen has <nl_types.h>, but is this the correct version check? 00021 # if defined(_XOPEN_VERSION) && (_XOPEN_VERSION >= 3) 00022 # define LIBSMBIOS_HAS_NL_TYPES_H 00023 # endif 00024 00025 // POSIX version 6 requires <stdint.h> 00026 # if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 200100) 00027 # define LIBSMBIOS_HAS_STDINT_H 00028 # endif 00029 00030 // POSIX version 2 requires <dirent.h> 00031 # if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 199009L) 00032 # define LIBSMBIOS_HAS_DIRENT_H 00033 # endif 00034 00035 // POSIX version 3 requires <signal.h> to have sigaction: 00036 # if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 199506L) 00037 # define LIBSMBIOS_HAS_SIGACTION 00038 # endif 00039 // POSIX defines _POSIX_THREADS > 0 for pthread support, 00040 // however some platforms define _POSIX_THREADS without 00041 // a value, hence the (_POSIX_THREADS+0 >= 0) check. 00042 // Strictly speaking this may catch platforms with a 00043 // non-functioning stub <pthreads.h>, but such occurrences should 00044 // occur very rarely if at all. 00045 # if defined(_POSIX_THREADS) && (_POSIX_THREADS+0 >= 0) && !defined(LIBSMBIOS_HAS_WINTHREADS) && !defined(LIBSMBIOS_HAS_MPTASKS) 00046 # define LIBSMBIOS_HAS_PTHREADS 00047 # endif 00048 00049 // LIBSMBIOS_HAS_NANOSLEEP: 00050 // This is predicated on _POSIX_TIMERS or _XOPEN_REALTIME: 00051 # if (defined(_POSIX_TIMERS) && (_POSIX_TIMERS+0 >= 0)) \ 00052 || (defined(_XOPEN_REALTIME) && (_XOPEN_REALTIME+0 >= 0)) 00053 # define LIBSMBIOS_HAS_NANOSLEEP 00054 # endif 00055 00056 // LIBSMBIOS_HAS_CLOCK_GETTIME: 00057 // This is predicated on _POSIX_TIMERS (also on _XOPEN_REALTIME 00058 // but at least one platform - linux - defines that flag without 00059 // defining clock_gettime): 00060 # if (defined(_POSIX_TIMERS) && (_POSIX_TIMERS+0 >= 0)) 00061 # define LIBSMBIOS_HAS_CLOCK_GETTIME 00062 # endif 00063 00064 // LIBSMBIOS_HAS_SCHED_YIELD: 00065 // This is predicated on _POSIX_PRIORITY_SCHEDULING or 00066 // on _POSIX_THREAD_PRIORITY_SCHEDULING or on _XOPEN_REALTIME. 00067 # if defined(_POSIX_PRIORITY_SCHEDULING) && (_POSIX_PRIORITY_SCHEDULING+0 > 0)\ 00068 || (defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING+0 > 0))\ 00069 || (defined(_XOPEN_REALTIME) && (_XOPEN_REALTIME+0 >= 0)) 00070 # define LIBSMBIOS_HAS_SCHED_YIELD 00071 # endif 00072 00073 // LIBSMBIOS_HAS_GETTIMEOFDAY: 00074 // LIBSMBIOS_HAS_PTHREAD_MUTEXATTR_SETTYPE: 00075 // These are predicated on _XOPEN_VERSION, and appears to be first released 00076 // in issue 4, version 2 (_XOPEN_VERSION > 500). 00077 # if defined(_XOPEN_VERSION) && (_XOPEN_VERSION+0 >= 500) 00078 # define LIBSMBIOS_HAS_GETTIMEOFDAY 00079 # if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE >= 500) 00080 # define LIBSMBIOS_HAS_PTHREAD_MUTEXATTR_SETTYPE 00081 # endif 00082 # endif 00083 00084 # endif 00085 00086 00087