ceph/src/boost/boost/config/stdlib/libstdcpp3.hpp

   1 //  (C) Copyright John Maddock 2001.
   2 //  (C) Copyright Jens Maurer 2001.
   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 //  config for libstdc++ v3
  10 //  not much to go in here:
  11
  12 #define BOOST_GNU_STDLIB 1
  13
  14 #ifdef __GLIBCXX__
  15 #define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCXX__)
  16 #else
  17 #define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCPP__)
  18 #endif
  19
  20 #if !defined(_GLIBCPP_USE_WCHAR_T) && !defined(_GLIBCXX_USE_WCHAR_T)
  21 #  define BOOST_NO_CWCHAR
  22 #  define BOOST_NO_CWCTYPE
  23 #  define BOOST_NO_STD_WSTRING
  24 #  define BOOST_NO_STD_WSTREAMBUF
  25 #endif
  26
  27 #if defined(__osf__) && !defined(_REENTRANT) \
  28   && ( defined(_GLIBCXX_HAVE_GTHR_DEFAULT) || defined(_GLIBCPP_HAVE_GTHR_DEFAULT) )
  29 // GCC 3 on Tru64 forces the definition of _REENTRANT when any std lib header
  30 // file is included, therefore for consistency we define it here as well.
  31 #  define _REENTRANT
  32 #endif
  33
  34 #ifdef __GLIBCXX__ // gcc 3.4 and greater:
  35 #  if defined(_GLIBCXX_HAVE_GTHR_DEFAULT) \
  36         || defined(_GLIBCXX__PTHREADS) \
  37         || defined(_GLIBCXX_HAS_GTHREADS) \
  38         || defined(_WIN32) \
  39         || defined(_AIX) \
  40         || defined(__HAIKU__)
  41       //
  42       // If the std lib has thread support turned on, then turn it on in Boost
  43       // as well.  We do this because some gcc-3.4 std lib headers define _REENTANT
  44       // while others do not...
  45       //
  46 #     define BOOST_HAS_THREADS
  47 #  else
  48 #     define BOOST_DISABLE_THREADS
  49 #  endif
  50 #elif defined(__GLIBCPP__) \
  51         && !defined(_GLIBCPP_HAVE_GTHR_DEFAULT) \
  52         && !defined(_GLIBCPP__PTHREADS)
  53    // disable thread support if the std lib was built single threaded:
  54 #  define BOOST_DISABLE_THREADS
  55 #endif
  56
  57 #if (defined(linux) || defined(__linux) || defined(__linux__)) && defined(__arm__) && defined(_GLIBCPP_HAVE_GTHR_DEFAULT)
  58 // linux on arm apparently doesn't define _REENTRANT
  59 // so just turn on threading support whenever the std lib is thread safe:
  60 #  define BOOST_HAS_THREADS
  61 #endif
  62
  63 #if !defined(_GLIBCPP_USE_LONG_LONG) \
  64     && !defined(_GLIBCXX_USE_LONG_LONG)\
  65     && defined(BOOST_HAS_LONG_LONG)
  66 // May have been set by compiler/*.hpp, but "long long" without library
  67 // support is useless.
  68 #  undef BOOST_HAS_LONG_LONG
  69 #endif
  70
  71 // Apple doesn't seem to reliably defined a *unix* macro
  72 #if !defined(CYGWIN) && (  defined(__unix__)  \
  73                         || defined(__unix)    \
  74                         || defined(unix)      \
  75                         || defined(__APPLE__) \
  76                         || defined(__APPLE)   \
  77                         || defined(APPLE))
  78 #  include <unistd.h>
  79 #endif
  80
  81 #if defined(__GLIBCXX__) || (defined(__GLIBCPP__) && __GLIBCPP__>=20020514) // GCC >= 3.1.0
  82 #  define BOOST_STD_EXTENSION_NAMESPACE __gnu_cxx
  83 #  define BOOST_HAS_SLIST
  84 #  define BOOST_HAS_HASH
  85 #  define BOOST_SLIST_HEADER <ext/slist>
  86 # if !defined(__GNUC__) || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
  87 #   define BOOST_HASH_SET_HEADER <ext/hash_set>
  88 #   define BOOST_HASH_MAP_HEADER <ext/hash_map>
  89 # else
  90 #   define BOOST_HASH_SET_HEADER <backward/hash_set>
  91 #   define BOOST_HASH_MAP_HEADER <backward/hash_map>
  92 # endif
  93 #endif
  94
  95 //
  96 // Decide whether we have C++11 support turned on:
  97 //
  98 #if defined(__GXX_EXPERIMENTAL_CXX0X__) || (__cplusplus >= 201103)
  99 #  define BOOST_LIBSTDCXX11
 100 #endif
 101
 102 //
 103 //  Decide which version of libstdc++ we have, normally
 104 //  libstdc++ C++0x support is detected via __GNUC__, __GNUC_MINOR__, and possibly
 105 //  __GNUC_PATCHLEVEL__ at the suggestion of Jonathan Wakely, one of the libstdc++
 106 //  developers. He also commented:
 107 //
 108 //       "I'm not sure how useful __GLIBCXX__ is for your purposes, for instance in
 109 //       GCC 4.2.4 it is set to 20080519 but in GCC 4.3.0 it is set to 20080305.
 110 //       Although 4.3.0 was released earlier than 4.2.4, it has better C++0x support
 111 //       than any release in the 4.2 series."
 112 //
 113 //  Another resource for understanding libstdc++ features is:
 114 //  http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#manual.intro.status.standard.200x
 115 //
 116 //  However, using the GCC version number fails when the compiler is clang since this
 117 //  only ever claims to emulate GCC-4.2, see https://svn.boost.org/trac/boost/ticket/7473
 118 //  for a long discussion on this issue.  What we can do though is use clang's __has_include
 119 //  to detect the presence of a C++11 header that was introduced with a specific GCC release.
 120 //  We still have to be careful though as many such headers were buggy and/or incomplete when
 121 //  first introduced, so we only check for headers that were fully featured from day 1, and then
 122 //  use that to infer the underlying GCC version:
 123 //
 124 #ifdef __clang__
 125
 126 #if __has_include(<experimental/memory_resource>)
 127 #  define BOOST_LIBSTDCXX_VERSION 60100
 128 #elif __has_include(<experimental/any>)
 129 #  define BOOST_LIBSTDCXX_VERSION 50100
 130 #elif __has_include(<shared_mutex>)
 131 #  define BOOST_LIBSTDCXX_VERSION 40900
 132 #elif __has_include(<ext/cmath>)
 133 #  define BOOST_LIBSTDCXX_VERSION 40800
 134 #elif __has_include(<scoped_allocator>)
 135 #  define BOOST_LIBSTDCXX_VERSION 40700
 136 #elif __has_include(<typeindex>)
 137 #  define BOOST_LIBSTDCXX_VERSION 40600
 138 #elif __has_include(<future>)
 139 #  define BOOST_LIBSTDCXX_VERSION 40500
 140 #elif  __has_include(<ratio>)
 141 #  define BOOST_LIBSTDCXX_VERSION 40400
 142 #elif __has_include(<array>)
 143 #  define BOOST_LIBSTDCXX_VERSION 40300
 144 #endif
 145
 146 #if (BOOST_LIBSTDCXX_VERSION < 50100)
 147 // libstdc++ does not define this function as it's deprecated in C++11, but clang still looks for it,
 148 // defining it here is a terrible cludge, but should get things working:
 149 extern "C" char *gets (char *__s);
 150 #endif
 151 //
 152 // clang is unable to parse some GCC headers, add those workarounds here:
 153 //
 154 #if BOOST_LIBSTDCXX_VERSION < 50000
 155 #  define BOOST_NO_CXX11_HDR_REGEX
 156 #endif
 157 //
 158 // GCC 4.7.x has no __cxa_thread_atexit which
 159 // thread_local objects require for cleanup:
 160 //
 161 #if BOOST_LIBSTDCXX_VERSION < 40800
 162 #  define BOOST_NO_CXX11_THREAD_LOCAL
 163 #endif
 164 //
 165 // Early clang versions can handle <chrono>, not exactly sure which versions
 166 // but certainly up to clang-3.8 and gcc-4.6:
 167 //
 168 #if (__clang_major__ < 5)
 169 #  if BOOST_LIBSTDCXX_VERSION < 40800
 170 #     define BOOST_NO_CXX11_HDR_FUTURE
 171 #     define BOOST_NO_CXX11_HDR_MUTEX
 172 #     define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
 173 #     define BOOST_NO_CXX11_HDR_CHRONO
 174 #  endif
 175 #endif
 176
 177 //
 178 //  GCC 4.8 and 9 add working versions of <atomic> and <regex> respectively.
 179 //  However, we have no test for these as the headers were present but broken
 180 //  in early GCC versions.
 181 //
 182 #endif
 183
 184 #if defined(__SUNPRO_CC) && (__SUNPRO_CC >= 0x5130) && (__cplusplus >= 201103L)
 185 //
 186 // Oracle Solaris compiler uses it's own verison of libstdc++ but doesn't
 187 // set __GNUC__
 188 //
 189 #if __SUNPRO_CC >= 0x5140
 190 #define BOOST_LIBSTDCXX_VERSION 50100
 191 #else
 192 #define BOOST_LIBSTDCXX_VERSION 40800
 193 #endif
 194 #endif
 195
 196 #if !defined(BOOST_LIBSTDCXX_VERSION)
 197 #  define BOOST_LIBSTDCXX_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
 198 #endif
 199
 200 // std::auto_ptr isn't provided with _GLIBCXX_DEPRECATED=0 (GCC 4.5 and earlier)
 201 // or _GLIBCXX_USE_DEPRECATED=0 (GCC 4.6 and later).
 202 #if defined(BOOST_LIBSTDCXX11)
 203 #  if BOOST_LIBSTDCXX_VERSION < 40600
 204 #     if !_GLIBCXX_DEPRECATED
 205 #        define BOOST_NO_AUTO_PTR
 206 #     endif
 207 #  elif !_GLIBCXX_USE_DEPRECATED
 208 #     define BOOST_NO_AUTO_PTR
 209 #  endif
 210 #endif
 211
 212 //  C++0x headers in GCC 4.3.0 and later
 213 //
 214 #if (BOOST_LIBSTDCXX_VERSION < 40300) || !defined(BOOST_LIBSTDCXX11)
 215 #  define BOOST_NO_CXX11_HDR_ARRAY
 216 #  define BOOST_NO_CXX11_HDR_TUPLE
 217 #  define BOOST_NO_CXX11_HDR_UNORDERED_MAP
 218 #  define BOOST_NO_CXX11_HDR_UNORDERED_SET
 219 #  define BOOST_NO_CXX11_HDR_FUNCTIONAL
 220 #endif
 221
 222 //  C++0x headers in GCC 4.4.0 and later
 223 //
 224 #if (BOOST_LIBSTDCXX_VERSION < 40400) || !defined(BOOST_LIBSTDCXX11)
 225 #  define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
 226 #  define BOOST_NO_CXX11_HDR_FORWARD_LIST
 227 #  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
 228 #  define BOOST_NO_CXX11_HDR_MUTEX
 229 #  define BOOST_NO_CXX11_HDR_RATIO
 230 #  define BOOST_NO_CXX11_HDR_SYSTEM_ERROR
 231 #  define BOOST_NO_CXX11_SMART_PTR
 232 #else
 233 #  define BOOST_HAS_TR1_COMPLEX_INVERSE_TRIG
 234 #  define BOOST_HAS_TR1_COMPLEX_OVERLOADS
 235 #endif
 236
 237 //  C++0x features in GCC 4.5.0 and later
 238 //
 239 #if (BOOST_LIBSTDCXX_VERSION < 40500) || !defined(BOOST_LIBSTDCXX11)
 240 #  define BOOST_NO_CXX11_NUMERIC_LIMITS
 241 #  define BOOST_NO_CXX11_HDR_FUTURE
 242 #  define BOOST_NO_CXX11_HDR_RANDOM
 243 #endif
 244
 245 //  C++0x features in GCC 4.6.0 and later
 246 //
 247 #if (BOOST_LIBSTDCXX_VERSION < 40600) || !defined(BOOST_LIBSTDCXX11)
 248 #  define BOOST_NO_CXX11_HDR_TYPEINDEX
 249 #  define BOOST_NO_CXX11_ADDRESSOF
 250 #  define BOOST_NO_CXX17_ITERATOR_TRAITS
 251 #endif
 252
 253 //  C++0x features in GCC 4.7.0 and later
 254 //
 255 #if (BOOST_LIBSTDCXX_VERSION < 40700) || !defined(BOOST_LIBSTDCXX11)
 256 // Note that although <chrono> existed prior to 4.7, "steady_clock" is spelled "monotonic_clock"
 257 // so 4.7.0 is the first truly conforming one.
 258 #  define BOOST_NO_CXX11_HDR_CHRONO
 259 #  define BOOST_NO_CXX11_ALLOCATOR
 260 #  define BOOST_NO_CXX11_POINTER_TRAITS
 261 #endif
 262 //  C++0x features in GCC 4.8.0 and later
 263 //
 264 #if (BOOST_LIBSTDCXX_VERSION < 40800) || !defined(BOOST_LIBSTDCXX11)
 265 // Note that although <atomic> existed prior to gcc 4.8 it was largely unimplemented for many types:
 266 #  define BOOST_NO_CXX11_HDR_ATOMIC
 267 #  define BOOST_NO_CXX11_HDR_THREAD
 268 #endif
 269 //  C++0x features in GCC 4.9.0 and later
 270 //
 271 #if (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
 272 // Although <regex> is present and compilable against, the actual implementation is not functional
 273 // even for the simplest patterns such as "\d" or "[0-9]". This is the case at least in gcc up to 4.8, inclusively.
 274 #  define BOOST_NO_CXX11_HDR_REGEX
 275 #endif
 276 #if (BOOST_LIBSTDCXX_VERSION < 40900) || (__cplusplus <= 201103)
 277 #  define BOOST_NO_CXX14_STD_EXCHANGE
 278 #endif
 279
 280 #if defined(__clang_major__) && ((__clang_major__ < 3) || ((__clang_major__ == 3) && (__clang_minor__ < 7)))
 281 // As of clang-3.6, libstdc++ header <atomic> throws up errors with clang:
 282 #  define BOOST_NO_CXX11_HDR_ATOMIC
 283 #endif
 284 //
 285 //  C++0x features in GCC 5.1 and later
 286 //
 287 #if (BOOST_LIBSTDCXX_VERSION < 50100) || !defined(BOOST_LIBSTDCXX11)
 288 #  define BOOST_NO_CXX11_HDR_TYPE_TRAITS
 289 #  define BOOST_NO_CXX11_HDR_CODECVT
 290 #  define BOOST_NO_CXX11_ATOMIC_SMART_PTR
 291 #  define BOOST_NO_CXX11_STD_ALIGN
 292 #endif
 293
 294 //
 295 //  C++17 features in GCC 6.1 and later
 296 //
 297 #if (BOOST_LIBSTDCXX_VERSION < 60100) || (__cplusplus <= 201402L)
 298 #  define BOOST_NO_CXX17_STD_INVOKE
 299 #endif
 300 #if (BOOST_LIBSTDCXX_VERSION < 70100) || (__cplusplus <= 201402L)
 301 #  define BOOST_NO_CXX17_STD_APPLY
 302 #endif
 303
 304 #if defined(__has_include)
 305 #if !__has_include(<shared_mutex>)
 306 #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
 307 #elif __cplusplus <= 201103
 308 #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
 309 #endif
 310 #elif __cplusplus < 201402 || (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
 311 #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
 312 #endif
 313
 314 //
 315 // Headers not present on Solaris with the Oracle compiler:
 316 #if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x5140)
 317 #define BOOST_NO_CXX11_HDR_FUTURE
 318 #define BOOST_NO_CXX11_HDR_FORWARD_LIST
 319 #define BOOST_NO_CXX11_HDR_ATOMIC
 320 // shared_ptr is present, but is not convertible to bool
 321 // which causes all kinds of problems especially in Boost.Thread
 322 // but probably elsewhere as well.
 323 #define BOOST_NO_CXX11_SMART_PTR
 324 #endif
 325
 326 #if (!defined(_GLIBCXX_HAS_GTHREADS) || !defined(_GLIBCXX_USE_C99_STDINT_TR1))
 327    // Headers not always available:
 328 #  ifndef BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
 329 #     define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
 330 #  endif
 331 #  ifndef BOOST_NO_CXX11_HDR_MUTEX
 332 #     define BOOST_NO_CXX11_HDR_MUTEX
 333 #  endif
 334 #  ifndef BOOST_NO_CXX11_HDR_THREAD
 335 #     define BOOST_NO_CXX11_HDR_THREAD
 336 #  endif
 337 #  ifndef BOOST_NO_CXX14_HDR_SHARED_MUTEX
 338 #     define BOOST_NO_CXX14_HDR_SHARED_MUTEX
 339 #  endif
 340 #endif
 341
 342 #if (!defined(_GTHREAD_USE_MUTEX_TIMEDLOCK) || (_GTHREAD_USE_MUTEX_TIMEDLOCK == 0)) && !defined(BOOST_NO_CXX11_HDR_MUTEX)
 343 // Timed mutexes are not always available:
 344 #  define BOOST_NO_CXX11_HDR_MUTEX
 345 #endif
 346
 347 //  --- end ---