ceph/src/boost/libs/config/include/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.
  28 #  if defined __GNUC__
  29 #    define BOOST_HAS_STDINT_H
  30 #  endif
  31 #endif
  32
  33 #if defined(__LIBCOMO__)
  34    //
  35    // como on linux doesn't have std:: c functions:
  36    // NOTE: versions of libcomo prior to beta28 have octal version numbering,
  37    // e.g. version 25 is 21 (dec)
  38    //
  39 #  if __LIBCOMO_VERSION__ <= 20
  40 #    define BOOST_NO_STDC_NAMESPACE
  41 #  endif
  42
  43 #  if __LIBCOMO_VERSION__ <= 21
  44 #    define BOOST_NO_SWPRINTF
  45 #  endif
  46
  47 #endif
  48
  49 //
  50 // If glibc is past version 2 then we definitely have
  51 // gettimeofday, earlier versions may or may not have it:
  52 //
  53 #if defined(__GLIBC__) && (__GLIBC__ >= 2)
  54 #  define BOOST_HAS_GETTIMEOFDAY
  55 #endif
  56
  57 #ifdef __USE_POSIX199309
  58 #  define BOOST_HAS_NANOSLEEP
  59 #endif
  60
  61 #if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
  62 // __GLIBC_PREREQ is available since 2.1.2
  63
  64    // swprintf is available since glibc 2.2.0
  65 #  if !__GLIBC_PREREQ(2,2) || (!defined(__USE_ISOC99) && !defined(__USE_UNIX98))
  66 #    define BOOST_NO_SWPRINTF
  67 #  endif
  68 #else
  69 #  define BOOST_NO_SWPRINTF
  70 #endif
  71
  72 // boilerplate code:
  73 #define BOOST_HAS_UNISTD_H
  74 #include <boost/config/posix_features.hpp>
  75 #if defined(__USE_GNU) && !defined(__ANDROID__) && !defined(ANDROID)
  76 #define BOOST_HAS_PTHREAD_YIELD
  77 #endif
  78
  79 #ifndef __GNUC__
  80 //
  81 // if the compiler is not gcc we still need to be able to parse
  82 // the GNU system headers, some of which (mainly <stdint.h>)
  83 // use GNU specific extensions:
  84 //
  85 #  ifndef __extension__
  86 #     define __extension__
  87 #  endif
  88 #  ifndef __const__
  89 #     define __const__ const
  90 #  endif
  91 #  ifndef __volatile__
  92 #     define __volatile__ volatile
  93 #  endif
  94 #  ifndef __signed__
  95 #     define __signed__ signed
  96 #  endif
  97 #  ifndef __typeof__
  98 #     define __typeof__ typeof
  99 #  endif
 100 #  ifndef __inline__
 101 #     define __inline__ inline
 102 #  endif
 103 #endif
 104
 105