ceph/src/boost/boost/config/detail/suffix.hpp

   1 //  Boost config.hpp configuration header file  ------------------------------//
   2 //  boostinspect:ndprecated_macros -- tell the inspect tool to ignore this file
   3
   4 //  Copyright (c) 2001-2003 John Maddock
   5 //  Copyright (c) 2001 Darin Adler
   6 //  Copyright (c) 2001 Peter Dimov
   7 //  Copyright (c) 2002 Bill Kempf
   8 //  Copyright (c) 2002 Jens Maurer
   9 //  Copyright (c) 2002-2003 David Abrahams
  10 //  Copyright (c) 2003 Gennaro Prota
  11 //  Copyright (c) 2003 Eric Friedman
  12 //  Copyright (c) 2010 Eric Jourdanneau, Joel Falcou
  13 // Distributed under the Boost Software License, Version 1.0. (See
  14 // accompanying file LICENSE_1_0.txt or copy at
  15 // http://www.boost.org/LICENSE_1_0.txt)
  16
  17 //  See http://www.boost.org/ for most recent version.
  18
  19 //  Boost config.hpp policy and rationale documentation has been moved to
  20 //  http://www.boost.org/libs/config/
  21 //
  22 //  This file is intended to be stable, and relatively unchanging.
  23 //  It should contain boilerplate code only - no compiler specific
  24 //  code unless it is unavoidable - no changes unless unavoidable.
  25
  26 #ifndef BOOST_CONFIG_SUFFIX_HPP
  27 #define BOOST_CONFIG_SUFFIX_HPP
  28
  29 #if defined(__GNUC__) && (__GNUC__ >= 4)
  30 //
  31 // Some GCC-4.x versions issue warnings even when __extension__ is used,
  32 // so use this as a workaround:
  33 //
  34 #pragma GCC system_header
  35 #endif
  36
  37 //
  38 // ensure that visibility macros are always defined, thus symplifying use
  39 //
  40 #ifndef BOOST_SYMBOL_EXPORT
  41 # define BOOST_SYMBOL_EXPORT
  42 #endif
  43 #ifndef BOOST_SYMBOL_IMPORT
  44 # define BOOST_SYMBOL_IMPORT
  45 #endif
  46 #ifndef BOOST_SYMBOL_VISIBLE
  47 # define BOOST_SYMBOL_VISIBLE
  48 #endif
  49
  50 //
  51 // look for long long by looking for the appropriate macros in <limits.h>.
  52 // Note that we use limits.h rather than climits for maximal portability,
  53 // remember that since these just declare a bunch of macros, there should be
  54 // no namespace issues from this.
  55 //
  56 #if !defined(BOOST_HAS_LONG_LONG) && !defined(BOOST_NO_LONG_LONG)                                              \
  57    && !defined(BOOST_MSVC) && !defined(__BORLANDC__)
  58 # include <limits.h>
  59 # if (defined(ULLONG_MAX) || defined(ULONG_LONG_MAX) || defined(ULONGLONG_MAX))
  60 #   define BOOST_HAS_LONG_LONG
  61 # else
  62 #   define BOOST_NO_LONG_LONG
  63 # endif
  64 #endif
  65
  66 // GCC 3.x will clean up all of those nasty macro definitions that
  67 // BOOST_NO_CTYPE_FUNCTIONS is intended to help work around, so undefine
  68 // it under GCC 3.x.
  69 #if defined(__GNUC__) && (__GNUC__ >= 3) && defined(BOOST_NO_CTYPE_FUNCTIONS)
  70 #  undef BOOST_NO_CTYPE_FUNCTIONS
  71 #endif
  72
  73 //
  74 // Assume any extensions are in namespace std:: unless stated otherwise:
  75 //
  76 #  ifndef BOOST_STD_EXTENSION_NAMESPACE
  77 #    define BOOST_STD_EXTENSION_NAMESPACE std
  78 #  endif
  79
  80 //
  81 // If cv-qualified specializations are not allowed, then neither are cv-void ones:
  82 //
  83 #  if defined(BOOST_NO_CV_SPECIALIZATIONS) \
  84       && !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)
  85 #     define BOOST_NO_CV_VOID_SPECIALIZATIONS
  86 #  endif
  87
  88 //
  89 // If there is no numeric_limits template, then it can't have any compile time
  90 // constants either!
  91 //
  92 #  if defined(BOOST_NO_LIMITS) \
  93       && !defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS)
  94 #     define BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
  95 #     define BOOST_NO_MS_INT64_NUMERIC_LIMITS
  96 #     define BOOST_NO_LONG_LONG_NUMERIC_LIMITS
  97 #  endif
  98
  99 //
 100 // if there is no long long then there is no specialisation
 101 // for numeric_limits<long long> either:
 102 //
 103 #if !defined(BOOST_HAS_LONG_LONG) && !defined(BOOST_NO_LONG_LONG_NUMERIC_LIMITS)
 104 #  define BOOST_NO_LONG_LONG_NUMERIC_LIMITS
 105 #endif
 106
 107 //
 108 // if there is no __int64 then there is no specialisation
 109 // for numeric_limits<__int64> either:
 110 //
 111 #if !defined(BOOST_HAS_MS_INT64) && !defined(BOOST_NO_MS_INT64_NUMERIC_LIMITS)
 112 #  define BOOST_NO_MS_INT64_NUMERIC_LIMITS
 113 #endif
 114
 115 //
 116 // if member templates are supported then so is the
 117 // VC6 subset of member templates:
 118 //
 119 #  if !defined(BOOST_NO_MEMBER_TEMPLATES) \
 120        && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
 121 #     define BOOST_MSVC6_MEMBER_TEMPLATES
 122 #  endif
 123
 124 //
 125 // Without partial specialization, can't test for partial specialisation bugs:
 126 //
 127 #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
 128       && !defined(BOOST_BCB_PARTIAL_SPECIALIZATION_BUG)
 129 #     define BOOST_BCB_PARTIAL_SPECIALIZATION_BUG
 130 #  endif
 131
 132 //
 133 // Without partial specialization, we can't have array-type partial specialisations:
 134 //
 135 #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
 136       && !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
 137 #     define BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS
 138 #  endif
 139
 140 //
 141 // Without partial specialization, std::iterator_traits can't work:
 142 //
 143 #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
 144       && !defined(BOOST_NO_STD_ITERATOR_TRAITS)
 145 #     define BOOST_NO_STD_ITERATOR_TRAITS
 146 #  endif
 147
 148 //
 149 // Without partial specialization, partial
 150 // specialization with default args won't work either:
 151 //
 152 #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
 153       && !defined(BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS)
 154 #     define BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS
 155 #  endif
 156
 157 //
 158 // Without member template support, we can't have template constructors
 159 // in the standard library either:
 160 //
 161 #  if defined(BOOST_NO_MEMBER_TEMPLATES) \
 162       && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) \
 163       && !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)
 164 #     define BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
 165 #  endif
 166
 167 //
 168 // Without member template support, we can't have a conforming
 169 // std::allocator template either:
 170 //
 171 #  if defined(BOOST_NO_MEMBER_TEMPLATES) \
 172       && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) \
 173       && !defined(BOOST_NO_STD_ALLOCATOR)
 174 #     define BOOST_NO_STD_ALLOCATOR
 175 #  endif
 176
 177 //
 178 // without ADL support then using declarations will break ADL as well:
 179 //
 180 #if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP) && !defined(BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL)
 181 #  define BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL
 182 #endif
 183
 184 //
 185 // Without typeid support we have no dynamic RTTI either:
 186 //
 187 #if defined(BOOST_NO_TYPEID) && !defined(BOOST_NO_RTTI)
 188 #  define BOOST_NO_RTTI
 189 #endif
 190
 191 //
 192 // If we have a standard allocator, then we have a partial one as well:
 193 //
 194 #if !defined(BOOST_NO_STD_ALLOCATOR)
 195 #  define BOOST_HAS_PARTIAL_STD_ALLOCATOR
 196 #endif
 197
 198 //
 199 // We can't have a working std::use_facet if there is no std::locale:
 200 //
 201 #  if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_USE_FACET)
 202 #     define BOOST_NO_STD_USE_FACET
 203 #  endif
 204
 205 //
 206 // We can't have a std::messages facet if there is no std::locale:
 207 //
 208 #  if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_MESSAGES)
 209 #     define BOOST_NO_STD_MESSAGES
 210 #  endif
 211
 212 //
 213 // We can't have a working std::wstreambuf if there is no std::locale:
 214 //
 215 #  if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_WSTREAMBUF)
 216 #     define BOOST_NO_STD_WSTREAMBUF
 217 #  endif
 218
 219 //
 220 // We can't have a <cwctype> if there is no <cwchar>:
 221 //
 222 #  if defined(BOOST_NO_CWCHAR) && !defined(BOOST_NO_CWCTYPE)
 223 #     define BOOST_NO_CWCTYPE
 224 #  endif
 225
 226 //
 227 // We can't have a swprintf if there is no <cwchar>:
 228 //
 229 #  if defined(BOOST_NO_CWCHAR) && !defined(BOOST_NO_SWPRINTF)
 230 #     define BOOST_NO_SWPRINTF
 231 #  endif
 232
 233 //
 234 // If Win32 support is turned off, then we must turn off
 235 // threading support also, unless there is some other
 236 // thread API enabled:
 237 //
 238 #if defined(BOOST_DISABLE_WIN32) && defined(_WIN32) \
 239    && !defined(BOOST_DISABLE_THREADS) && !defined(BOOST_HAS_PTHREADS)
 240 #  define BOOST_DISABLE_THREADS
 241 #endif
 242
 243 //
 244 // Turn on threading support if the compiler thinks that it's in
 245 // multithreaded mode.  We put this here because there are only a
 246 // limited number of macros that identify this (if there's any missing
 247 // from here then add to the appropriate compiler section):
 248 //
 249 #if (defined(__MT__) || defined(_MT) || defined(_REENTRANT) \
 250     || defined(_PTHREADS) || defined(__APPLE__) || defined(__DragonFly__)) \
 251     && !defined(BOOST_HAS_THREADS)
 252 #  define BOOST_HAS_THREADS
 253 #endif
 254
 255 //
 256 // Turn threading support off if BOOST_DISABLE_THREADS is defined:
 257 //
 258 #if defined(BOOST_DISABLE_THREADS) && defined(BOOST_HAS_THREADS)
 259 #  undef BOOST_HAS_THREADS
 260 #endif
 261
 262 //
 263 // Turn threading support off if we don't recognise the threading API:
 264 //
 265 #if defined(BOOST_HAS_THREADS) && !defined(BOOST_HAS_PTHREADS)\
 266       && !defined(BOOST_HAS_WINTHREADS) && !defined(BOOST_HAS_BETHREADS)\
 267       && !defined(BOOST_HAS_MPTASKS)
 268 #  undef BOOST_HAS_THREADS
 269 #endif
 270
 271 //
 272 // Turn threading detail macros off if we don't (want to) use threading
 273 //
 274 #ifndef BOOST_HAS_THREADS
 275 #  undef BOOST_HAS_PTHREADS
 276 #  undef BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE
 277 #  undef BOOST_HAS_PTHREAD_YIELD
 278 #  undef BOOST_HAS_PTHREAD_DELAY_NP
 279 #  undef BOOST_HAS_WINTHREADS
 280 #  undef BOOST_HAS_BETHREADS
 281 #  undef BOOST_HAS_MPTASKS
 282 #endif
 283
 284 //
 285 // If the compiler claims to be C99 conformant, then it had better
 286 // have a <stdint.h>:
 287 //
 288 #  if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901)
 289 #     define BOOST_HAS_STDINT_H
 290 #     ifndef BOOST_HAS_LOG1P
 291 #        define BOOST_HAS_LOG1P
 292 #     endif
 293 #     ifndef BOOST_HAS_EXPM1
 294 #        define BOOST_HAS_EXPM1
 295 #     endif
 296 #  endif
 297
 298 //
 299 // Define BOOST_NO_SLIST and BOOST_NO_HASH if required.
 300 // Note that this is for backwards compatibility only.
 301 //
 302 #  if !defined(BOOST_HAS_SLIST) && !defined(BOOST_NO_SLIST)
 303 #     define BOOST_NO_SLIST
 304 #  endif
 305
 306 #  if !defined(BOOST_HAS_HASH) && !defined(BOOST_NO_HASH)
 307 #     define BOOST_NO_HASH
 308 #  endif
 309
 310 //
 311 // Set BOOST_SLIST_HEADER if not set already:
 312 //
 313 #if defined(BOOST_HAS_SLIST) && !defined(BOOST_SLIST_HEADER)
 314 #  define BOOST_SLIST_HEADER <slist>
 315 #endif
 316
 317 //
 318 // Set BOOST_HASH_SET_HEADER if not set already:
 319 //
 320 #if defined(BOOST_HAS_HASH) && !defined(BOOST_HASH_SET_HEADER)
 321 #  define BOOST_HASH_SET_HEADER <hash_set>
 322 #endif
 323
 324 //
 325 // Set BOOST_HASH_MAP_HEADER if not set already:
 326 //
 327 #if defined(BOOST_HAS_HASH) && !defined(BOOST_HASH_MAP_HEADER)
 328 #  define BOOST_HASH_MAP_HEADER <hash_map>
 329 #endif
 330
 331 //  BOOST_HAS_ABI_HEADERS
 332 //  This macro gets set if we have headers that fix the ABI,
 333 //  and prevent ODR violations when linking to external libraries:
 334 #if defined(BOOST_ABI_PREFIX) && defined(BOOST_ABI_SUFFIX) && !defined(BOOST_HAS_ABI_HEADERS)
 335 #  define BOOST_HAS_ABI_HEADERS
 336 #endif
 337
 338 #if defined(BOOST_HAS_ABI_HEADERS) && defined(BOOST_DISABLE_ABI_HEADERS)
 339 #  undef BOOST_HAS_ABI_HEADERS
 340 #endif
 341
 342 //  BOOST_NO_STDC_NAMESPACE workaround  --------------------------------------//
 343 //  Because std::size_t usage is so common, even in boost headers which do not
 344 //  otherwise use the C library, the <cstddef> workaround is included here so
 345 //  that ugly workaround code need not appear in many other boost headers.
 346 //  NOTE WELL: This is a workaround for non-conforming compilers; <cstddef>
 347 //  must still be #included in the usual places so that <cstddef> inclusion
 348 //  works as expected with standard conforming compilers.  The resulting
 349 //  double inclusion of <cstddef> is harmless.
 350
 351 # if defined(BOOST_NO_STDC_NAMESPACE) && defined(__cplusplus)
 352 #   include <cstddef>
 353     namespace std { using ::ptrdiff_t; using ::size_t; }
 354 # endif
 355
 356 //  Workaround for the unfortunate min/max macros defined by some platform headers
 357
 358 #define BOOST_PREVENT_MACRO_SUBSTITUTION
 359
 360 #ifndef BOOST_USING_STD_MIN
 361 #  define BOOST_USING_STD_MIN() using std::min
 362 #endif
 363
 364 #ifndef BOOST_USING_STD_MAX
 365 #  define BOOST_USING_STD_MAX() using std::max
 366 #endif
 367
 368 //  BOOST_NO_STD_MIN_MAX workaround  -----------------------------------------//
 369
 370 #  if defined(BOOST_NO_STD_MIN_MAX) && defined(__cplusplus)
 371
 372 namespace std {
 373   template <class _Tp>
 374   inline const _Tp& min BOOST_PREVENT_MACRO_SUBSTITUTION (const _Tp& __a, const _Tp& __b) {
 375     return __b < __a ? __b : __a;
 376   }
 377   template <class _Tp>
 378   inline const _Tp& max BOOST_PREVENT_MACRO_SUBSTITUTION (const _Tp& __a, const _Tp& __b) {
 379     return  __a < __b ? __b : __a;
 380   }
 381 }
 382
 383 #  endif
 384
 385 // BOOST_STATIC_CONSTANT workaround --------------------------------------- //
 386 // On compilers which don't allow in-class initialization of static integral
 387 // constant members, we must use enums as a workaround if we want the constants
 388 // to be available at compile-time. This macro gives us a convenient way to
 389 // declare such constants.
 390
 391 #  ifdef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
 392 #       define BOOST_STATIC_CONSTANT(type, assignment) enum { assignment }
 393 #  else
 394 #     define BOOST_STATIC_CONSTANT(type, assignment) static const type assignment
 395 #  endif
 396
 397 // BOOST_USE_FACET / HAS_FACET workaround ----------------------------------//
 398 // When the standard library does not have a conforming std::use_facet there
 399 // are various workarounds available, but they differ from library to library.
 400 // The same problem occurs with has_facet.
 401 // These macros provide a consistent way to access a locale's facets.
 402 // Usage:
 403 //    replace
 404 //       std::use_facet<Type>(loc);
 405 //    with
 406 //       BOOST_USE_FACET(Type, loc);
 407 //    Note do not add a std:: prefix to the front of BOOST_USE_FACET!
 408 //  Use for BOOST_HAS_FACET is analogous.
 409
 410 #if defined(BOOST_NO_STD_USE_FACET)
 411 #  ifdef BOOST_HAS_TWO_ARG_USE_FACET
 412 #     define BOOST_USE_FACET(Type, loc) std::use_facet(loc, static_cast<Type*>(0))
 413 #     define BOOST_HAS_FACET(Type, loc) std::has_facet(loc, static_cast<Type*>(0))
 414 #  elif defined(BOOST_HAS_MACRO_USE_FACET)
 415 #     define BOOST_USE_FACET(Type, loc) std::_USE(loc, Type)
 416 #     define BOOST_HAS_FACET(Type, loc) std::_HAS(loc, Type)
 417 #  elif defined(BOOST_HAS_STLP_USE_FACET)
 418 #     define BOOST_USE_FACET(Type, loc) (*std::_Use_facet<Type >(loc))
 419 #     define BOOST_HAS_FACET(Type, loc) std::has_facet< Type >(loc)
 420 #  endif
 421 #else
 422 #  define BOOST_USE_FACET(Type, loc) std::use_facet< Type >(loc)
 423 #  define BOOST_HAS_FACET(Type, loc) std::has_facet< Type >(loc)
 424 #endif
 425
 426 // BOOST_NESTED_TEMPLATE workaround ------------------------------------------//
 427 // Member templates are supported by some compilers even though they can't use
 428 // the A::template member<U> syntax, as a workaround replace:
 429 //
 430 // typedef typename A::template rebind<U> binder;
 431 //
 432 // with:
 433 //
 434 // typedef typename A::BOOST_NESTED_TEMPLATE rebind<U> binder;
 435
 436 #ifndef BOOST_NO_MEMBER_TEMPLATE_KEYWORD
 437 #  define BOOST_NESTED_TEMPLATE template
 438 #else
 439 #  define BOOST_NESTED_TEMPLATE
 440 #endif
 441
 442 // BOOST_UNREACHABLE_RETURN(x) workaround -------------------------------------//
 443 // Normally evaluates to nothing, unless BOOST_NO_UNREACHABLE_RETURN_DETECTION
 444 // is defined, in which case it evaluates to return x; Use when you have a return
 445 // statement that can never be reached.
 446
 447 #ifndef BOOST_UNREACHABLE_RETURN
 448 #  ifdef BOOST_NO_UNREACHABLE_RETURN_DETECTION
 449 #     define BOOST_UNREACHABLE_RETURN(x) return x;
 450 #  else
 451 #     define BOOST_UNREACHABLE_RETURN(x)
 452 #  endif
 453 #endif
 454
 455 // BOOST_DEDUCED_TYPENAME workaround ------------------------------------------//
 456 //
 457 // Some compilers don't support the use of `typename' for dependent
 458 // types in deduced contexts, e.g.
 459 //
 460 //     template <class T> void f(T, typename T::type);
 461 //                                  ^^^^^^^^
 462 // Replace these declarations with:
 463 //
 464 //     template <class T> void f(T, BOOST_DEDUCED_TYPENAME T::type);
 465
 466 #ifndef BOOST_NO_DEDUCED_TYPENAME
 467 #  define BOOST_DEDUCED_TYPENAME typename
 468 #else
 469 #  define BOOST_DEDUCED_TYPENAME
 470 #endif
 471
 472 #ifndef BOOST_NO_TYPENAME_WITH_CTOR
 473 #  define BOOST_CTOR_TYPENAME typename
 474 #else
 475 #  define BOOST_CTOR_TYPENAME
 476 #endif
 477
 478 // long long workaround ------------------------------------------//
 479 // On gcc (and maybe other compilers?) long long is alway supported
 480 // but it's use may generate either warnings (with -ansi), or errors
 481 // (with -pedantic -ansi) unless it's use is prefixed by __extension__
 482 //
 483 #if defined(BOOST_HAS_LONG_LONG) && defined(__cplusplus)
 484 namespace boost{
 485 #  ifdef __GNUC__
 486    __extension__ typedef long long long_long_type;
 487    __extension__ typedef unsigned long long ulong_long_type;
 488 #  else
 489    typedef long long long_long_type;
 490    typedef unsigned long long ulong_long_type;
 491 #  endif
 492 }
 493 #endif
 494 // same again for __int128:
 495 #if defined(BOOST_HAS_INT128) && defined(__cplusplus)
 496 namespace boost{
 497 #  ifdef __GNUC__
 498    __extension__ typedef __int128 int128_type;
 499    __extension__ typedef unsigned __int128 uint128_type;
 500 #  else
 501    typedef __int128 int128_type;
 502    typedef unsigned __int128 uint128_type;
 503 #  endif
 504 }
 505 #endif
 506 // same again for __float128:
 507 #if defined(BOOST_HAS_FLOAT128) && defined(__cplusplus)
 508 namespace boost {
 509 #  ifdef __GNUC__
 510    __extension__ typedef __float128 float128_type;
 511 #  else
 512    typedef __float128 float128_type;
 513 #  endif
 514 }
 515 #endif
 516
 517 // BOOST_[APPEND_]EXPLICIT_TEMPLATE_[NON_]TYPE macros --------------------------//
 518
 519 // These macros are obsolete. Port away and remove.
 520
 521 #  define BOOST_EXPLICIT_TEMPLATE_TYPE(t)
 522 #  define BOOST_EXPLICIT_TEMPLATE_TYPE_SPEC(t)
 523 #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE(t, v)
 524 #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)
 525
 526 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(t)
 527 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE_SPEC(t)
 528 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE(t, v)
 529 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)
 530
 531 // When BOOST_NO_STD_TYPEINFO is defined, we can just import
 532 // the global definition into std namespace:
 533 #if defined(BOOST_NO_STD_TYPEINFO) && defined(__cplusplus)
 534 #include <typeinfo>
 535 namespace std{ using ::type_info; }
 536 #endif
 537
 538 // ---------------------------------------------------------------------------//
 539
 540 // Helper macro BOOST_STRINGIZE:
 541 // Helper macro BOOST_JOIN:
 542
 543 #include <boost/config/helper_macros.hpp>
 544
 545 //
 546 // Set some default values for compiler/library/platform names.
 547 // These are for debugging config setup only:
 548 //
 549 #  ifndef BOOST_COMPILER
 550 #     define BOOST_COMPILER "Unknown ISO C++ Compiler"
 551 #  endif
 552 #  ifndef BOOST_STDLIB
 553 #     define BOOST_STDLIB "Unknown ISO standard library"
 554 #  endif
 555 #  ifndef BOOST_PLATFORM
 556 #     if defined(unix) || defined(__unix) || defined(_XOPEN_SOURCE) \
 557          || defined(_POSIX_SOURCE)
 558 #        define BOOST_PLATFORM "Generic Unix"
 559 #     else
 560 #        define BOOST_PLATFORM "Unknown"
 561 #     endif
 562 #  endif
 563
 564 //
 565 // Set some default values GPU support
 566 //
 567 #  ifndef BOOST_GPU_ENABLED
 568 #  define BOOST_GPU_ENABLED
 569 #  endif
 570
 571 // BOOST_RESTRICT ---------------------------------------------//
 572 // Macro to use in place of 'restrict' keyword variants
 573 #if !defined(BOOST_RESTRICT)
 574 #  if defined(_MSC_VER)
 575 #    define BOOST_RESTRICT __restrict
 576 #    if !defined(BOOST_NO_RESTRICT_REFERENCES) && (_MSC_FULL_VER < 190023026)
 577 #      define BOOST_NO_RESTRICT_REFERENCES
 578 #    endif
 579 #  elif defined(__GNUC__) && __GNUC__ > 3
 580      // Clang also defines __GNUC__ (as 4)
 581 #    define BOOST_RESTRICT __restrict__
 582 #  else
 583 #    define BOOST_RESTRICT
 584 #    if !defined(BOOST_NO_RESTRICT_REFERENCES)
 585 #      define BOOST_NO_RESTRICT_REFERENCES
 586 #    endif
 587 #  endif
 588 #endif
 589
 590 // BOOST_MAY_ALIAS -----------------------------------------------//
 591 // The macro expands to an attribute to mark a type that is allowed to alias other types.
 592 // The macro is defined in the compiler-specific headers.
 593 #if !defined(BOOST_MAY_ALIAS)
 594 #  define BOOST_NO_MAY_ALIAS
 595 #  define BOOST_MAY_ALIAS
 596 #endif
 597
 598 // BOOST_FORCEINLINE ---------------------------------------------//
 599 // Macro to use in place of 'inline' to force a function to be inline
 600 #if !defined(BOOST_FORCEINLINE)
 601 #  if defined(_MSC_VER)
 602 #    define BOOST_FORCEINLINE __forceinline
 603 #  elif defined(__GNUC__) && __GNUC__ > 3
 604      // Clang also defines __GNUC__ (as 4)
 605 #    define BOOST_FORCEINLINE inline __attribute__ ((__always_inline__))
 606 #  else
 607 #    define BOOST_FORCEINLINE inline
 608 #  endif
 609 #endif
 610
 611 // BOOST_NOINLINE ---------------------------------------------//
 612 // Macro to use in place of 'inline' to prevent a function to be inlined
 613 #if !defined(BOOST_NOINLINE)
 614 #  if defined(_MSC_VER)
 615 #    define BOOST_NOINLINE __declspec(noinline)
 616 #  elif defined(__GNUC__) && __GNUC__ > 3
 617      // Clang also defines __GNUC__ (as 4)
 618 #    if defined(__CUDACC__)
 619        // nvcc doesn't always parse __noinline__,
 620        // see: https://svn.boost.org/trac/boost/ticket/9392
 621 #      define BOOST_NOINLINE __attribute__ ((noinline))
 622 #    else
 623 #      define BOOST_NOINLINE __attribute__ ((__noinline__))
 624 #    endif
 625 #  else
 626 #    define BOOST_NOINLINE
 627 #  endif
 628 #endif
 629
 630 // BOOST_NORETURN ---------------------------------------------//
 631 // Macro to use before a function declaration/definition to designate
 632 // the function as not returning normally (i.e. with a return statement
 633 // or by leaving the function scope, if the function return type is void).
 634 #if !defined(BOOST_NORETURN)
 635 #  if defined(_MSC_VER)
 636 #    define BOOST_NORETURN __declspec(noreturn)
 637 #  elif defined(__GNUC__)
 638 #    define BOOST_NORETURN __attribute__ ((__noreturn__))
 639 #  elif defined(__has_attribute) && defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x5130)
 640 #    if __has_attribute(noreturn)
 641 #      define BOOST_NORETURN [[noreturn]]
 642 #    endif
 643 #  elif defined(__has_cpp_attribute)
 644 #    if __has_cpp_attribute(noreturn)
 645 #      define BOOST_NORETURN [[noreturn]]
 646 #    endif
 647 #  endif
 648 #endif
 649
 650 #if !defined(BOOST_NORETURN)
 651 #  define BOOST_NO_NORETURN
 652 #  define BOOST_NORETURN
 653 #endif
 654
 655 // Branch prediction hints
 656 // These macros are intended to wrap conditional expressions that yield true or false
 657 //
 658 //  if (BOOST_LIKELY(var == 10))
 659 //  {
 660 //     // the most probable code here
 661 //  }
 662 //
 663 #if !defined(BOOST_LIKELY)
 664 #  define BOOST_LIKELY(x) x
 665 #endif
 666 #if !defined(BOOST_UNLIKELY)
 667 #  define BOOST_UNLIKELY(x) x
 668 #endif
 669
 670 // Type and data alignment specification
 671 //
 672 #if !defined(BOOST_ALIGNMENT)
 673 #  if !defined(BOOST_NO_CXX11_ALIGNAS)
 674 #    define BOOST_ALIGNMENT(x) alignas(x)
 675 #  elif defined(_MSC_VER)
 676 #    define BOOST_ALIGNMENT(x) __declspec(align(x))
 677 #  elif defined(__GNUC__)
 678 #    define BOOST_ALIGNMENT(x) __attribute__ ((__aligned__(x)))
 679 #  else
 680 #    define BOOST_NO_ALIGNMENT
 681 #    define BOOST_ALIGNMENT(x)
 682 #  endif
 683 #endif
 684
 685 // Lack of non-public defaulted functions is implied by the lack of any defaulted functions
 686 #if !defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS) && defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
 687 #  define BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS
 688 #endif
 689
 690 // Lack of defaulted moves is implied by the lack of either rvalue references or any defaulted functions
 691 #if !defined(BOOST_NO_CXX11_DEFAULTED_MOVES) && (defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || defined(BOOST_NO_CXX11_RVALUE_REFERENCES))
 692 #  define BOOST_NO_CXX11_DEFAULTED_MOVES
 693 #endif
 694
 695 // Defaulted and deleted function declaration helpers
 696 // These macros are intended to be inside a class definition.
 697 // BOOST_DEFAULTED_FUNCTION accepts the function declaration and its
 698 // body, which will be used if the compiler doesn't support defaulted functions.
 699 // BOOST_DELETED_FUNCTION only accepts the function declaration. It
 700 // will expand to a private function declaration, if the compiler doesn't support
 701 // deleted functions. Because of this it is recommended to use BOOST_DELETED_FUNCTION
 702 // in the end of the class definition.
 703 //
 704 //  class my_class
 705 //  {
 706 //  public:
 707 //      // Default-constructible
 708 //      BOOST_DEFAULTED_FUNCTION(my_class(), {})
 709 //      // Copying prohibited
 710 //      BOOST_DELETED_FUNCTION(my_class(my_class const&))
 711 //      BOOST_DELETED_FUNCTION(my_class& operator= (my_class const&))
 712 //  };
 713 //
 714 #if !(defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS))
 715 #   define BOOST_DEFAULTED_FUNCTION(fun, body) fun = default;
 716 #else
 717 #   define BOOST_DEFAULTED_FUNCTION(fun, body) fun body
 718 #endif
 719
 720 #if !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
 721 #   define BOOST_DELETED_FUNCTION(fun) fun = delete;
 722 #else
 723 #   define BOOST_DELETED_FUNCTION(fun) private: fun;
 724 #endif
 725
 726 //
 727 // Set BOOST_NO_DECLTYPE_N3276 when BOOST_NO_DECLTYPE is defined
 728 //
 729 #if defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_CXX11_DECLTYPE_N3276)
 730 #define BOOST_NO_CXX11_DECLTYPE_N3276 BOOST_NO_CXX11_DECLTYPE
 731 #endif
 732
 733 //  -------------------- Deprecated macros for 1.50 ---------------------------
 734 //  These will go away in a future release
 735
 736 //  Use BOOST_NO_CXX11_HDR_UNORDERED_SET or BOOST_NO_CXX11_HDR_UNORDERED_MAP
 737 //           instead of BOOST_NO_STD_UNORDERED
 738 #if defined(BOOST_NO_CXX11_HDR_UNORDERED_MAP) || defined (BOOST_NO_CXX11_HDR_UNORDERED_SET)
 739 # ifndef BOOST_NO_CXX11_STD_UNORDERED
 740 #  define BOOST_NO_CXX11_STD_UNORDERED
 741 # endif
 742 #endif
 743
 744 //  Use BOOST_NO_CXX11_HDR_INITIALIZER_LIST instead of BOOST_NO_INITIALIZER_LISTS
 745 #if defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST) && !defined(BOOST_NO_INITIALIZER_LISTS)
 746 #  define BOOST_NO_INITIALIZER_LISTS
 747 #endif
 748
 749 //  Use BOOST_NO_CXX11_HDR_ARRAY instead of BOOST_NO_0X_HDR_ARRAY
 750 #if defined(BOOST_NO_CXX11_HDR_ARRAY) && !defined(BOOST_NO_0X_HDR_ARRAY)
 751 #  define BOOST_NO_0X_HDR_ARRAY
 752 #endif
 753 //  Use BOOST_NO_CXX11_HDR_CHRONO instead of BOOST_NO_0X_HDR_CHRONO
 754 #if defined(BOOST_NO_CXX11_HDR_CHRONO) && !defined(BOOST_NO_0X_HDR_CHRONO)
 755 #  define BOOST_NO_0X_HDR_CHRONO
 756 #endif
 757 //  Use BOOST_NO_CXX11_HDR_CODECVT instead of BOOST_NO_0X_HDR_CODECVT
 758 #if defined(BOOST_NO_CXX11_HDR_CODECVT) && !defined(BOOST_NO_0X_HDR_CODECVT)
 759 #  define BOOST_NO_0X_HDR_CODECVT
 760 #endif
 761 //  Use BOOST_NO_CXX11_HDR_CONDITION_VARIABLE instead of BOOST_NO_0X_HDR_CONDITION_VARIABLE
 762 #if defined(BOOST_NO_CXX11_HDR_CONDITION_VARIABLE) && !defined(BOOST_NO_0X_HDR_CONDITION_VARIABLE)
 763 #  define BOOST_NO_0X_HDR_CONDITION_VARIABLE
 764 #endif
 765 //  Use BOOST_NO_CXX11_HDR_FORWARD_LIST instead of BOOST_NO_0X_HDR_FORWARD_LIST
 766 #if defined(BOOST_NO_CXX11_HDR_FORWARD_LIST) && !defined(BOOST_NO_0X_HDR_FORWARD_LIST)
 767 #  define BOOST_NO_0X_HDR_FORWARD_LIST
 768 #endif
 769 //  Use BOOST_NO_CXX11_HDR_FUTURE instead of BOOST_NO_0X_HDR_FUTURE
 770 #if defined(BOOST_NO_CXX11_HDR_FUTURE) && !defined(BOOST_NO_0X_HDR_FUTURE)
 771 #  define BOOST_NO_0X_HDR_FUTURE
 772 #endif
 773
 774 //  Use BOOST_NO_CXX11_HDR_INITIALIZER_LIST
 775 //  instead of BOOST_NO_0X_HDR_INITIALIZER_LIST or BOOST_NO_INITIALIZER_LISTS
 776 #ifdef BOOST_NO_CXX11_HDR_INITIALIZER_LIST
 777 # ifndef BOOST_NO_0X_HDR_INITIALIZER_LIST
 778 #  define BOOST_NO_0X_HDR_INITIALIZER_LIST
 779 # endif
 780 # ifndef BOOST_NO_INITIALIZER_LISTS
 781 #  define BOOST_NO_INITIALIZER_LISTS
 782 # endif
 783 #endif
 784
 785 //  Use BOOST_NO_CXX11_HDR_MUTEX instead of BOOST_NO_0X_HDR_MUTEX
 786 #if defined(BOOST_NO_CXX11_HDR_MUTEX) && !defined(BOOST_NO_0X_HDR_MUTEX)
 787 #  define BOOST_NO_0X_HDR_MUTEX
 788 #endif
 789 //  Use BOOST_NO_CXX11_HDR_RANDOM instead of BOOST_NO_0X_HDR_RANDOM
 790 #if defined(BOOST_NO_CXX11_HDR_RANDOM) && !defined(BOOST_NO_0X_HDR_RANDOM)
 791 #  define BOOST_NO_0X_HDR_RANDOM
 792 #endif
 793 //  Use BOOST_NO_CXX11_HDR_RATIO instead of BOOST_NO_0X_HDR_RATIO
 794 #if defined(BOOST_NO_CXX11_HDR_RATIO) && !defined(BOOST_NO_0X_HDR_RATIO)
 795 #  define BOOST_NO_0X_HDR_RATIO
 796 #endif
 797 //  Use BOOST_NO_CXX11_HDR_REGEX instead of BOOST_NO_0X_HDR_REGEX
 798 #if defined(BOOST_NO_CXX11_HDR_REGEX) && !defined(BOOST_NO_0X_HDR_REGEX)
 799 #  define BOOST_NO_0X_HDR_REGEX
 800 #endif
 801 //  Use BOOST_NO_CXX11_HDR_SYSTEM_ERROR instead of BOOST_NO_0X_HDR_SYSTEM_ERROR
 802 #if defined(BOOST_NO_CXX11_HDR_SYSTEM_ERROR) && !defined(BOOST_NO_0X_HDR_SYSTEM_ERROR)
 803 #  define BOOST_NO_0X_HDR_SYSTEM_ERROR
 804 #endif
 805 //  Use BOOST_NO_CXX11_HDR_THREAD instead of BOOST_NO_0X_HDR_THREAD
 806 #if defined(BOOST_NO_CXX11_HDR_THREAD) && !defined(BOOST_NO_0X_HDR_THREAD)
 807 #  define BOOST_NO_0X_HDR_THREAD
 808 #endif
 809 //  Use BOOST_NO_CXX11_HDR_TUPLE instead of BOOST_NO_0X_HDR_TUPLE
 810 #if defined(BOOST_NO_CXX11_HDR_TUPLE) && !defined(BOOST_NO_0X_HDR_TUPLE)
 811 #  define BOOST_NO_0X_HDR_TUPLE
 812 #endif
 813 //  Use BOOST_NO_CXX11_HDR_TYPE_TRAITS instead of BOOST_NO_0X_HDR_TYPE_TRAITS
 814 #if defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS) && !defined(BOOST_NO_0X_HDR_TYPE_TRAITS)
 815 #  define BOOST_NO_0X_HDR_TYPE_TRAITS
 816 #endif
 817 //  Use BOOST_NO_CXX11_HDR_TYPEINDEX instead of BOOST_NO_0X_HDR_TYPEINDEX
 818 #if defined(BOOST_NO_CXX11_HDR_TYPEINDEX) && !defined(BOOST_NO_0X_HDR_TYPEINDEX)
 819 #  define BOOST_NO_0X_HDR_TYPEINDEX
 820 #endif
 821 //  Use BOOST_NO_CXX11_HDR_UNORDERED_MAP instead of BOOST_NO_0X_HDR_UNORDERED_MAP
 822 #if defined(BOOST_NO_CXX11_HDR_UNORDERED_MAP) && !defined(BOOST_NO_0X_HDR_UNORDERED_MAP)
 823 #  define BOOST_NO_0X_HDR_UNORDERED_MAP
 824 #endif
 825 //  Use BOOST_NO_CXX11_HDR_UNORDERED_SET instead of BOOST_NO_0X_HDR_UNORDERED_SET
 826 #if defined(BOOST_NO_CXX11_HDR_UNORDERED_SET) && !defined(BOOST_NO_0X_HDR_UNORDERED_SET)
 827 #  define BOOST_NO_0X_HDR_UNORDERED_SET
 828 #endif
 829
 830 //  ------------------ End of deprecated macros for 1.50 ---------------------------
 831
 832 //  -------------------- Deprecated macros for 1.51 ---------------------------
 833 //  These will go away in a future release
 834
 835 //  Use     BOOST_NO_CXX11_AUTO_DECLARATIONS instead of   BOOST_NO_AUTO_DECLARATIONS
 836 #if defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) && !defined(BOOST_NO_AUTO_DECLARATIONS)
 837 #  define BOOST_NO_AUTO_DECLARATIONS
 838 #endif
 839 //  Use     BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS instead of   BOOST_NO_AUTO_MULTIDECLARATIONS
 840 #if defined(BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS) && !defined(BOOST_NO_AUTO_MULTIDECLARATIONS)
 841 #  define BOOST_NO_AUTO_MULTIDECLARATIONS
 842 #endif
 843 //  Use     BOOST_NO_CXX11_CHAR16_T instead of   BOOST_NO_CHAR16_T
 844 #if defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CHAR16_T)
 845 #  define BOOST_NO_CHAR16_T
 846 #endif
 847 //  Use     BOOST_NO_CXX11_CHAR32_T instead of   BOOST_NO_CHAR32_T
 848 #if defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CHAR32_T)
 849 #  define BOOST_NO_CHAR32_T
 850 #endif
 851 //  Use     BOOST_NO_CXX11_TEMPLATE_ALIASES instead of   BOOST_NO_TEMPLATE_ALIASES
 852 #if defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) && !defined(BOOST_NO_TEMPLATE_ALIASES)
 853 #  define BOOST_NO_TEMPLATE_ALIASES
 854 #endif
 855 //  Use     BOOST_NO_CXX11_CONSTEXPR instead of   BOOST_NO_CONSTEXPR
 856 #if defined(BOOST_NO_CXX11_CONSTEXPR) && !defined(BOOST_NO_CONSTEXPR)
 857 #  define BOOST_NO_CONSTEXPR
 858 #endif
 859 //  Use     BOOST_NO_CXX11_DECLTYPE_N3276 instead of   BOOST_NO_DECLTYPE_N3276
 860 #if defined(BOOST_NO_CXX11_DECLTYPE_N3276) && !defined(BOOST_NO_DECLTYPE_N3276)
 861 #  define BOOST_NO_DECLTYPE_N3276
 862 #endif
 863 //  Use     BOOST_NO_CXX11_DECLTYPE instead of   BOOST_NO_DECLTYPE
 864 #if defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_DECLTYPE)
 865 #  define BOOST_NO_DECLTYPE
 866 #endif
 867 //  Use     BOOST_NO_CXX11_DEFAULTED_FUNCTIONS instead of   BOOST_NO_DEFAULTED_FUNCTIONS
 868 #if defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && !defined(BOOST_NO_DEFAULTED_FUNCTIONS)
 869 #  define BOOST_NO_DEFAULTED_FUNCTIONS
 870 #endif
 871 //  Use     BOOST_NO_CXX11_DELETED_FUNCTIONS instead of   BOOST_NO_DELETED_FUNCTIONS
 872 #if defined(BOOST_NO_CXX11_DELETED_FUNCTIONS) && !defined(BOOST_NO_DELETED_FUNCTIONS)
 873 #  define BOOST_NO_DELETED_FUNCTIONS
 874 #endif
 875 //  Use     BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS instead of   BOOST_NO_EXPLICIT_CONVERSION_OPERATORS
 876 #if defined(BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS) && !defined(BOOST_NO_EXPLICIT_CONVERSION_OPERATORS)
 877 #  define BOOST_NO_EXPLICIT_CONVERSION_OPERATORS
 878 #endif
 879 //  Use     BOOST_NO_CXX11_EXTERN_TEMPLATE instead of   BOOST_NO_EXTERN_TEMPLATE
 880 #if defined(BOOST_NO_CXX11_EXTERN_TEMPLATE) && !defined(BOOST_NO_EXTERN_TEMPLATE)
 881 #  define BOOST_NO_EXTERN_TEMPLATE
 882 #endif
 883 //  Use     BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS instead of   BOOST_NO_FUNCTION_TEMPLATE_DEFAULT_ARGS
 884 #if defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS) && !defined(BOOST_NO_FUNCTION_TEMPLATE_DEFAULT_ARGS)
 885 #  define BOOST_NO_FUNCTION_TEMPLATE_DEFAULT_ARGS
 886 #endif
 887 //  Use     BOOST_NO_CXX11_LAMBDAS instead of   BOOST_NO_LAMBDAS
 888 #if defined(BOOST_NO_CXX11_LAMBDAS) && !defined(BOOST_NO_LAMBDAS)
 889 #  define BOOST_NO_LAMBDAS
 890 #endif
 891 //  Use     BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS instead of   BOOST_NO_LOCAL_CLASS_TEMPLATE_PARAMETERS
 892 #if defined(BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS) && !defined(BOOST_NO_LOCAL_CLASS_TEMPLATE_PARAMETERS)
 893 #  define BOOST_NO_LOCAL_CLASS_TEMPLATE_PARAMETERS
 894 #endif
 895 //  Use     BOOST_NO_CXX11_NOEXCEPT instead of   BOOST_NO_NOEXCEPT
 896 #if defined(BOOST_NO_CXX11_NOEXCEPT) && !defined(BOOST_NO_NOEXCEPT)
 897 #  define BOOST_NO_NOEXCEPT
 898 #endif
 899 //  Use     BOOST_NO_CXX11_NULLPTR instead of   BOOST_NO_NULLPTR
 900 #if defined(BOOST_NO_CXX11_NULLPTR) && !defined(BOOST_NO_NULLPTR)
 901 #  define BOOST_NO_NULLPTR
 902 #endif
 903 //  Use     BOOST_NO_CXX11_RAW_LITERALS instead of   BOOST_NO_RAW_LITERALS
 904 #if defined(BOOST_NO_CXX11_RAW_LITERALS) && !defined(BOOST_NO_RAW_LITERALS)
 905 #  define BOOST_NO_RAW_LITERALS
 906 #endif
 907 //  Use     BOOST_NO_CXX11_RVALUE_REFERENCES instead of   BOOST_NO_RVALUE_REFERENCES
 908 #if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_RVALUE_REFERENCES)
 909 #  define BOOST_NO_RVALUE_REFERENCES
 910 #endif
 911 //  Use     BOOST_NO_CXX11_SCOPED_ENUMS instead of   BOOST_NO_SCOPED_ENUMS
 912 #if defined(BOOST_NO_CXX11_SCOPED_ENUMS) && !defined(BOOST_NO_SCOPED_ENUMS)
 913 #  define BOOST_NO_SCOPED_ENUMS
 914 #endif
 915 //  Use     BOOST_NO_CXX11_STATIC_ASSERT instead of   BOOST_NO_STATIC_ASSERT
 916 #if defined(BOOST_NO_CXX11_STATIC_ASSERT) && !defined(BOOST_NO_STATIC_ASSERT)
 917 #  define BOOST_NO_STATIC_ASSERT
 918 #endif
 919 //  Use     BOOST_NO_CXX11_STD_UNORDERED instead of   BOOST_NO_STD_UNORDERED
 920 #if defined(BOOST_NO_CXX11_STD_UNORDERED) && !defined(BOOST_NO_STD_UNORDERED)
 921 #  define BOOST_NO_STD_UNORDERED
 922 #endif
 923 //  Use     BOOST_NO_CXX11_UNICODE_LITERALS instead of   BOOST_NO_UNICODE_LITERALS
 924 #if defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(BOOST_NO_UNICODE_LITERALS)
 925 #  define BOOST_NO_UNICODE_LITERALS
 926 #endif
 927 //  Use     BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX instead of   BOOST_NO_UNIFIED_INITIALIZATION_SYNTAX
 928 #if defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX) && !defined(BOOST_NO_UNIFIED_INITIALIZATION_SYNTAX)
 929 #  define BOOST_NO_UNIFIED_INITIALIZATION_SYNTAX
 930 #endif
 931 //  Use     BOOST_NO_CXX11_VARIADIC_TEMPLATES instead of   BOOST_NO_VARIADIC_TEMPLATES
 932 #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_VARIADIC_TEMPLATES)
 933 #  define BOOST_NO_VARIADIC_TEMPLATES
 934 #endif
 935 //  Use     BOOST_NO_CXX11_VARIADIC_MACROS instead of   BOOST_NO_VARIADIC_MACROS
 936 #if defined(BOOST_NO_CXX11_VARIADIC_MACROS) && !defined(BOOST_NO_VARIADIC_MACROS)
 937 #  define BOOST_NO_VARIADIC_MACROS
 938 #endif
 939 //  Use     BOOST_NO_CXX11_NUMERIC_LIMITS instead of   BOOST_NO_NUMERIC_LIMITS_LOWEST
 940 #if defined(BOOST_NO_CXX11_NUMERIC_LIMITS) && !defined(BOOST_NO_NUMERIC_LIMITS_LOWEST)
 941 #  define BOOST_NO_NUMERIC_LIMITS_LOWEST
 942 #endif
 943 //  ------------------ End of deprecated macros for 1.51 ---------------------------
 944
 945
 946 //
 947 // Helper macro for marking types and methods final
 948 //
 949 #if !defined(BOOST_NO_CXX11_FINAL)
 950 #  define BOOST_FINAL final
 951 #else
 952 #  define BOOST_FINAL
 953 #endif
 954
 955 //
 956 // Helper macros BOOST_NOEXCEPT, BOOST_NOEXCEPT_IF, BOOST_NOEXCEPT_EXPR
 957 // These aid the transition to C++11 while still supporting C++03 compilers
 958 //
 959 #ifdef BOOST_NO_CXX11_NOEXCEPT
 960 #  define BOOST_NOEXCEPT
 961 #  define BOOST_NOEXCEPT_OR_NOTHROW throw()
 962 #  define BOOST_NOEXCEPT_IF(Predicate)
 963 #  define BOOST_NOEXCEPT_EXPR(Expression) false
 964 #else
 965 #  define BOOST_NOEXCEPT noexcept
 966 #  define BOOST_NOEXCEPT_OR_NOTHROW noexcept
 967 #  define BOOST_NOEXCEPT_IF(Predicate) noexcept((Predicate))
 968 #  define BOOST_NOEXCEPT_EXPR(Expression) noexcept((Expression))
 969 #endif
 970 //
 971 // Helper macro BOOST_FALLTHROUGH
 972 // Fallback definition of BOOST_FALLTHROUGH macro used to mark intended
 973 // fall-through between case labels in a switch statement. We use a definition
 974 // that requires a semicolon after it to avoid at least one type of misuse even
 975 // on unsupported compilers.
 976 //
 977 #ifndef BOOST_FALLTHROUGH
 978 #  define BOOST_FALLTHROUGH ((void)0)
 979 #endif
 980
 981 //
 982 // constexpr workarounds
 983 //
 984 #if defined(BOOST_NO_CXX11_CONSTEXPR)
 985 #define BOOST_CONSTEXPR
 986 #define BOOST_CONSTEXPR_OR_CONST const
 987 #else
 988 #define BOOST_CONSTEXPR constexpr
 989 #define BOOST_CONSTEXPR_OR_CONST constexpr
 990 #endif
 991 #if defined(BOOST_NO_CXX14_CONSTEXPR)
 992 #define BOOST_CXX14_CONSTEXPR
 993 #else
 994 #define BOOST_CXX14_CONSTEXPR constexpr
 995 #endif
 996
 997 //
 998 // C++17 inline variables
 999 //
1000 #if !defined(BOOST_NO_CXX17_INLINE_VARIABLES)
1001 #define BOOST_INLINE_VARIABLE inline
1002 #else
1003 #define BOOST_INLINE_VARIABLE
1004 #endif
1005
1006 //
1007 // Unused variable/typedef workarounds:
1008 //
1009 #ifndef BOOST_ATTRIBUTE_UNUSED
1010 #  define BOOST_ATTRIBUTE_UNUSED
1011 #endif
1012 //
1013 // [[nodiscard]]:
1014 //
1015 #ifdef __has_cpp_attribute
1016 // clang-6 accepts [[nodiscard]] with -std=c++14, but warns about it -pedantic
1017 #if __has_cpp_attribute(nodiscard) && !(defined(__clang__) && (__cplusplus < 201703L))
1018 # define BOOST_ATTRIBUTE_NODISCARD [[nodiscard]]
1019 #endif
1020 #if __has_cpp_attribute(no_unique_address) && !(defined(__GNUC__) && (__cplusplus < 201100))
1021 # define BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS [[no_unique_address]]
1022 #endif
1023 #endif
1024 #ifndef BOOST_ATTRIBUTE_NODISCARD
1025 # define BOOST_ATTRIBUTE_NODISCARD
1026 #endif
1027 #ifndef BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS
1028 # define BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS
1029 #endif
1030
1031 #define BOOST_STATIC_CONSTEXPR  static BOOST_CONSTEXPR_OR_CONST
1032
1033 //
1034 // Set BOOST_HAS_STATIC_ASSERT when BOOST_NO_CXX11_STATIC_ASSERT is not defined
1035 //
1036 #if !defined(BOOST_NO_CXX11_STATIC_ASSERT) && !defined(BOOST_HAS_STATIC_ASSERT)
1037 #  define BOOST_HAS_STATIC_ASSERT
1038 #endif
1039
1040 //
1041 // Set BOOST_HAS_RVALUE_REFS when BOOST_NO_CXX11_RVALUE_REFERENCES is not defined
1042 //
1043 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_HAS_RVALUE_REFS)
1044 #define BOOST_HAS_RVALUE_REFS
1045 #endif
1046
1047 //
1048 // Set BOOST_HAS_VARIADIC_TMPL when BOOST_NO_CXX11_VARIADIC_TEMPLATES is not defined
1049 //
1050 #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_HAS_VARIADIC_TMPL)
1051 #define BOOST_HAS_VARIADIC_TMPL
1052 #endif
1053 //
1054 // Set BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS when
1055 // BOOST_NO_CXX11_VARIADIC_TEMPLATES is set:
1056 //
1057 #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS)
1058 #  define BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
1059 #endif
1060
1061 // This is a catch all case for obsolete compilers / std libs:
1062 #if !defined(_YVALS) && !defined(_CPPLIB_VER)  // msvc std lib already configured
1063 #if (!defined(__has_include) || (__cplusplus < 201700))
1064 #  define BOOST_NO_CXX17_HDR_OPTIONAL
1065 #  define BOOST_NO_CXX17_HDR_STRING_VIEW
1066 #  define BOOST_NO_CXX17_HDR_VARIANT
1067 #else
1068 #if !__has_include(<optional>)
1069 #  define BOOST_NO_CXX17_HDR_OPTIONAL
1070 #endif
1071 #if !__has_include(<string_view>)
1072 #  define BOOST_NO_CXX17_HDR_STRING_VIEW
1073 #endif
1074 #if !__has_include(<variant>)
1075 #  define BOOST_NO_CXX17_HDR_VARIANT
1076 #endif
1077 #endif
1078 #endif
1079
1080 //
1081 // Finish off with checks for macros that are depricated / no longer supported,
1082 // if any of these are set then it's very likely that much of Boost will no
1083 // longer work.  So stop with a #error for now, but give the user a chance
1084 // to continue at their own risk if they really want to:
1085 //
1086 #if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_CONFIG_ALLOW_DEPRECATED)
1087 #  error "You are using a compiler which lacks features which are now a minimum requirement in order to use Boost, define BOOST_CONFIG_ALLOW_DEPRECATED if you want to continue at your own risk!!!"
1088 #endif
1089
1090 #endif