ceph/src/boost/libs/config/include/boost/config/stdlib/libcpp.hpp

   1 //  (C) Copyright Christopher Jefferson 2011.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See http://www.boost.org for most recent version.
   7
   8 //  config for libc++
   9 //  Might need more in here later.
  10
  11 #if !defined(_LIBCPP_VERSION)
  12 #  include <ciso646>
  13 #  if !defined(_LIBCPP_VERSION)
  14 #      error "This is not libc++!"
  15 #  endif
  16 #endif
  17
  18 #define BOOST_STDLIB "libc++ version " BOOST_STRINGIZE(_LIBCPP_VERSION)
  19
  20 #define BOOST_HAS_THREADS
  21
  22 #ifdef _LIBCPP_HAS_NO_VARIADICS
  23 #    define BOOST_NO_CXX11_HDR_TUPLE
  24 #endif
  25
  26 // BOOST_NO_CXX11_ALLOCATOR should imply no support for the C++11
  27 // allocator model. The C++11 allocator model requires a conforming
  28 // std::allocator_traits which is only possible with C++11 template
  29 // aliases since members rebind_alloc and rebind_traits require it.
  30 #if defined(_LIBCPP_HAS_NO_TEMPLATE_ALIASES)
  31 #    define BOOST_NO_CXX11_ALLOCATOR
  32 #endif
  33
  34 #if __cplusplus < 201103
  35 #  define BOOST_NO_CXX11_HDR_ARRAY
  36 #  define BOOST_NO_CXX11_HDR_CODECVT
  37 #  define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
  38 #  define BOOST_NO_CXX11_HDR_FORWARD_LIST
  39 #  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
  40 #  define BOOST_NO_CXX11_HDR_MUTEX
  41 #  define BOOST_NO_CXX11_HDR_RANDOM
  42 #  define BOOST_NO_CXX11_HDR_RATIO
  43 #  define BOOST_NO_CXX11_HDR_REGEX
  44 #  define BOOST_NO_CXX11_HDR_SYSTEM_ERROR
  45 #  define BOOST_NO_CXX11_HDR_THREAD
  46 #  define BOOST_NO_CXX11_HDR_TUPLE
  47 #  define BOOST_NO_CXX11_HDR_TYPEINDEX
  48 #  define BOOST_NO_CXX11_HDR_UNORDERED_MAP
  49 #  define BOOST_NO_CXX11_HDR_UNORDERED_SET
  50 #  define BOOST_NO_CXX11_NUMERIC_LIMITS
  51 #  define BOOST_NO_CXX11_ALLOCATOR
  52 #  define BOOST_NO_CXX11_SMART_PTR
  53 #  define BOOST_NO_CXX11_HDR_FUNCTIONAL
  54 #  define BOOST_NO_CXX11_STD_ALIGN
  55 #  define BOOST_NO_CXX11_ADDRESSOF
  56 #  define BOOST_NO_CXX11_HDR_ATOMIC
  57 #  define BOOST_NO_CXX11_ATOMIC_SMART_PTR
  58 #  define BOOST_NO_CXX11_HDR_CHRONO
  59 #  define BOOST_NO_CXX11_HDR_TYPE_TRAITS
  60 #  define BOOST_NO_CXX11_HDR_FUTURE
  61 #elif _LIBCPP_VERSION < 3700
  62 //
  63 // These appear to be unusable/incomplete so far:
  64 //
  65 #  define BOOST_NO_CXX11_HDR_ATOMIC
  66 #  define BOOST_NO_CXX11_ATOMIC_SMART_PTR
  67 #  define BOOST_NO_CXX11_HDR_CHRONO
  68 #  define BOOST_NO_CXX11_HDR_TYPE_TRAITS
  69 #  define BOOST_NO_CXX11_HDR_FUTURE
  70 #endif
  71
  72
  73 #if _LIBCPP_VERSION < 3700
  74 // libc++ uses a non-standard messages_base
  75 #define BOOST_NO_STD_MESSAGES
  76 // C++17 features
  77 #define BOOST_NO_CXX17_STD_INVOKE
  78 #endif
  79
  80 #if (_LIBCPP_VERSION <= 1101) && !defined(BOOST_NO_CXX11_THREAD_LOCAL)
  81 // This is a bit of a sledgehammer, because really it's just libc++abi that has no
  82 // support for thread_local, leading to linker errors such as
  83 // "undefined reference to `__cxa_thread_atexit'".  It is fixed in the
  84 // most recent releases of libc++abi though...
  85 #  define BOOST_NO_CXX11_THREAD_LOCAL
  86 #endif
  87
  88 #if defined(__has_include)
  89 #if !__has_include(<shared_mutex>)
  90 #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
  91 #elif __cplusplus <= 201103
  92 #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
  93 #endif
  94 #elif __cplusplus < 201402
  95 #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
  96 #endif
  97
  98 //  --- end ---