ceph/src/boost/boost/config/platform/linux.hpp

   1 //  (C) Copyright John Maddock 2001 - 2003.
   2 //  (C) Copyright Jens Maurer 2001 - 2003.
   3 //  Use, modification and distribution are subject to the
   4 //  Boost Software License, Version 1.0. (See accompanying file
   5 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 //  See http://www.boost.org for most recent version.
   8
   9 //  linux specific config options:
  10
  11 #define BOOST_PLATFORM "linux"
  12
  13 // make sure we have __GLIBC_PREREQ if available at all
  14 #ifdef __cplusplus
  15 #include <cstdlib>
  16 #else
  17 #include <stdlib.h>
  18 #endif
  19
  20 //
  21 // <stdint.h> added to glibc 2.1.1
  22 // We can only test for 2.1 though:
  23 //
  24 #if defined(__GLIBC__) && ((__GLIBC__ > 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 1)))
  25    // <stdint.h> defines int64_t unconditionally, but <sys/types.h> defines
  26    // int64_t only if __GNUC__.  Thus, assume a fully usable <stdint.h>
  27    // only when using GCC.  Update 2017: this appears not to be the case for
  28    // recent glibc releases, see bug report: https://svn.boost.org/trac/boost/ticket/13045
  29 #  if defined(__GNUC__) || ((__GLIBC__ > 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 5)))
  30 #    define BOOST_HAS_STDINT_H
  31 #  endif
  32 #endif
  33
  34 #if defined(__LIBCOMO__)
  35    //
  36    // como on linux doesn't have std:: c functions:
  37    // NOTE: versions of libcomo prior to beta28 have octal version numbering,
  38    // e.g. version 25 is 21 (dec)
  39    //
  40 #  if __LIBCOMO_VERSION__ <= 20
  41 #    define BOOST_NO_STDC_NAMESPACE
  42 #  endif
  43
  44 #  if __LIBCOMO_VERSION__ <= 21
  45 #    define BOOST_NO_SWPRINTF
  46 #  endif
  47
  48 #endif
  49
  50 //
  51 // If glibc is past version 2 then we definitely have
  52 // gettimeofday, earlier versions may or may not have it:
  53 //
  54 #if defined(__GLIBC__) && (__GLIBC__ >= 2)
  55 #  define BOOST_HAS_GETTIMEOFDAY
  56 #endif
  57
  58 #ifdef __USE_POSIX199309
  59 #  define BOOST_HAS_NANOSLEEP
  60 #endif
  61
  62 #if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
  63 // __GLIBC_PREREQ is available since 2.1.2
  64
  65    // swprintf is available since glibc 2.2.0
  66 #  if !__GLIBC_PREREQ(2,2) || (!defined(__USE_ISOC99) && !defined(__USE_UNIX98))
  67 #    define BOOST_NO_SWPRINTF
  68 #  endif
  69 #else
  70 #  define BOOST_NO_SWPRINTF
  71 #endif
  72
  73 // boilerplate code:
  74 #define BOOST_HAS_UNISTD_H
  75 #include <boost/config/detail/posix_features.hpp>
  76 #if defined(__USE_GNU) && !defined(__ANDROID__) && !defined(ANDROID)
  77 #define BOOST_HAS_PTHREAD_YIELD
  78 #endif
  79
  80 #ifndef __GNUC__
  81 //
  82 // if the compiler is not gcc we still need to be able to parse
  83 // the GNU system headers, some of which (mainly <stdint.h>)
  84 // use GNU specific extensions:
  85 //
  86 #  ifndef __extension__
  87 #     define __extension__
  88 #  endif
  89 #  ifndef __const__
  90 #     define __const__ const
  91 #  endif
  92 #  ifndef __volatile__
  93 #     define __volatile__ volatile
  94 #  endif
  95 #  ifndef __signed__
  96 #     define __signed__ signed
  97 #  endif
  98 #  ifndef __typeof__
  99 #     define __typeof__ typeof
 100 #  endif
 101 #  ifndef __inline__
 102 #     define __inline__ inline
 103 #  endif
 104 #endif
 105
 106