src/thirdparty/boost_1_47_0/boost/config/suffix.hpp

   1 //  Boost config.hpp configuration header file  ------------------------------//
   2
   3 //  Copyright (c) 2001-2003 John Maddock
   4 //  Copyright (c) 2001 Darin Adler
   5 //  Copyright (c) 2001 Peter Dimov
   6 //  Copyright (c) 2002 Bill Kempf
   7 //  Copyright (c) 2002 Jens Maurer
   8 //  Copyright (c) 2002-2003 David Abrahams
   9 //  Copyright (c) 2003 Gennaro Prota
  10 //  Copyright (c) 2003 Eric Friedman
  11 //  Copyright (c) 2010 Eric Jourdanneau, Joel Falcou
  12 // Distributed under the Boost Software License, Version 1.0. (See
  13 // accompanying file LICENSE_1_0.txt or copy at
  14 // http://www.boost.org/LICENSE_1_0.txt)
  15
  16 //  See http://www.boost.org/ for most recent version.
  17
  18 //  Boost config.hpp policy and rationale documentation has been moved to
  19 //  http://www.boost.org/libs/config/
  20 //
  21 //  This file is intended to be stable, and relatively unchanging.
  22 //  It should contain boilerplate code only - no compiler specific
  23 //  code unless it is unavoidable - no changes unless unavoidable.
  24
  25 #ifndef BOOST_CONFIG_SUFFIX_HPP
  26 #define BOOST_CONFIG_SUFFIX_HPP
  27
  28 #if defined(__GNUC__) && (__GNUC__ >= 4)
  29 //
  30 // Some GCC-4.x versions issue warnings even when __extension__ is used,
  31 // so use this as a workaround:
  32 //
  33 #pragma GCC system_header
  34 #endif
  35
  36 //
  37 // ensure that visibility macros are always defined, thus symplifying use
  38 //
  39 #ifndef BOOST_SYMBOL_EXPORT
  40 # define BOOST_SYMBOL_EXPORT
  41 #endif
  42 #ifndef BOOST_SYMBOL_IMPORT
  43 # define BOOST_SYMBOL_IMPORT
  44 #endif
  45 #ifndef BOOST_SYMBOL_VISIBLE
  46 # define BOOST_SYMBOL_VISIBLE
  47 #endif
  48
  49 //
  50 // look for long long by looking for the appropriate macros in <limits.h>.
  51 // Note that we use limits.h rather than climits for maximal portability,
  52 // remember that since these just declare a bunch of macros, there should be
  53 // no namespace issues from this.
  54 //
  55 #if !defined(BOOST_HAS_LONG_LONG) && !defined(BOOST_NO_LONG_LONG)                                              \
  56    && !defined(BOOST_MSVC) && !defined(__BORLANDC__)
  57 # include <limits.h>
  58 # if (defined(ULLONG_MAX) || defined(ULONG_LONG_MAX) || defined(ULONGLONG_MAX))
  59 #   define BOOST_HAS_LONG_LONG
  60 # else
  61 #   define BOOST_NO_LONG_LONG
  62 # endif
  63 #endif
  64
  65 // GCC 3.x will clean up all of those nasty macro definitions that
  66 // BOOST_NO_CTYPE_FUNCTIONS is intended to help work around, so undefine
  67 // it under GCC 3.x.
  68 #if defined(__GNUC__) && (__GNUC__ >= 3) && defined(BOOST_NO_CTYPE_FUNCTIONS)
  69 #  undef BOOST_NO_CTYPE_FUNCTIONS
  70 #endif
  71
  72 //
  73 // Assume any extensions are in namespace std:: unless stated otherwise:
  74 //
  75 #  ifndef BOOST_STD_EXTENSION_NAMESPACE
  76 #    define BOOST_STD_EXTENSION_NAMESPACE std
  77 #  endif
  78
  79 //
  80 // If cv-qualified specializations are not allowed, then neither are cv-void ones:
  81 //
  82 #  if defined(BOOST_NO_CV_SPECIALIZATIONS) \
  83       && !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)
  84 #     define BOOST_NO_CV_VOID_SPECIALIZATIONS
  85 #  endif
  86
  87 //
  88 // If there is no numeric_limits template, then it can't have any compile time
  89 // constants either!
  90 //
  91 #  if defined(BOOST_NO_LIMITS) \
  92       && !defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS)
  93 #     define BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
  94 #     define BOOST_NO_MS_INT64_NUMERIC_LIMITS
  95 #     define BOOST_NO_LONG_LONG_NUMERIC_LIMITS
  96 #  endif
  97
  98 //
  99 // if there is no long long then there is no specialisation
 100 // for numeric_limits<long long> either:
 101 //
 102 #if !defined(BOOST_HAS_LONG_LONG) && !defined(BOOST_NO_LONG_LONG_NUMERIC_LIMITS)
 103 #  define BOOST_NO_LONG_LONG_NUMERIC_LIMITS
 104 #endif
 105
 106 //
 107 // Normalize BOOST_NO_STATIC_ASSERT and (depricated) BOOST_HAS_STATIC_ASSERT:
 108 //
 109 #if !defined(BOOST_NO_STATIC_ASSERT) && !defined(BOOST_HAS_STATIC_ASSERT)
 110 #  define BOOST_HAS_STATIC_ASSERT
 111 #endif
 112
 113 //
 114 // if there is no __int64 then there is no specialisation
 115 // for numeric_limits<__int64> either:
 116 //
 117 #if !defined(BOOST_HAS_MS_INT64) && !defined(BOOST_NO_MS_INT64_NUMERIC_LIMITS)
 118 #  define BOOST_NO_MS_INT64_NUMERIC_LIMITS
 119 #endif
 120
 121 //
 122 // if member templates are supported then so is the
 123 // VC6 subset of member templates:
 124 //
 125 #  if !defined(BOOST_NO_MEMBER_TEMPLATES) \
 126        && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
 127 #     define BOOST_MSVC6_MEMBER_TEMPLATES
 128 #  endif
 129
 130 //
 131 // Without partial specialization, can't test for partial specialisation bugs:
 132 //
 133 #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
 134       && !defined(BOOST_BCB_PARTIAL_SPECIALIZATION_BUG)
 135 #     define BOOST_BCB_PARTIAL_SPECIALIZATION_BUG
 136 #  endif
 137
 138 //
 139 // Without partial specialization, we can't have array-type partial specialisations:
 140 //
 141 #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
 142       && !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
 143 #     define BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS
 144 #  endif
 145
 146 //
 147 // Without partial specialization, std::iterator_traits can't work:
 148 //
 149 #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
 150       && !defined(BOOST_NO_STD_ITERATOR_TRAITS)
 151 #     define BOOST_NO_STD_ITERATOR_TRAITS
 152 #  endif
 153
 154 //
 155 // Without partial specialization, partial
 156 // specialization with default args won't work either:
 157 //
 158 #  if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
 159       && !defined(BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS)
 160 #     define BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS
 161 #  endif
 162
 163 //
 164 // Without member template support, we can't have template constructors
 165 // in the standard library either:
 166 //
 167 #  if defined(BOOST_NO_MEMBER_TEMPLATES) \
 168       && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) \
 169       && !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)
 170 #     define BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
 171 #  endif
 172
 173 //
 174 // Without member template support, we can't have a conforming
 175 // std::allocator template either:
 176 //
 177 #  if defined(BOOST_NO_MEMBER_TEMPLATES) \
 178       && !defined(BOOST_MSVC6_MEMBER_TEMPLATES) \
 179       && !defined(BOOST_NO_STD_ALLOCATOR)
 180 #     define BOOST_NO_STD_ALLOCATOR
 181 #  endif
 182
 183 //
 184 // without ADL support then using declarations will break ADL as well:
 185 //
 186 #if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP) && !defined(BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL)
 187 #  define BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL
 188 #endif
 189
 190 //
 191 // Without typeid support we have no dynamic RTTI either:
 192 //
 193 #if defined(BOOST_NO_TYPEID) && !defined(BOOST_NO_RTTI)
 194 #  define BOOST_NO_RTTI
 195 #endif
 196
 197 //
 198 // If we have a standard allocator, then we have a partial one as well:
 199 //
 200 #if !defined(BOOST_NO_STD_ALLOCATOR)
 201 #  define BOOST_HAS_PARTIAL_STD_ALLOCATOR
 202 #endif
 203
 204 //
 205 // We can't have a working std::use_facet if there is no std::locale:
 206 //
 207 #  if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_USE_FACET)
 208 #     define BOOST_NO_STD_USE_FACET
 209 #  endif
 210
 211 //
 212 // We can't have a std::messages facet if there is no std::locale:
 213 //
 214 #  if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_MESSAGES)
 215 #     define BOOST_NO_STD_MESSAGES
 216 #  endif
 217
 218 //
 219 // We can't have a working std::wstreambuf if there is no std::locale:
 220 //
 221 #  if defined(BOOST_NO_STD_LOCALE) && !defined(BOOST_NO_STD_WSTREAMBUF)
 222 #     define BOOST_NO_STD_WSTREAMBUF
 223 #  endif
 224
 225 //
 226 // We can't have a <cwctype> if there is no <cwchar>:
 227 //
 228 #  if defined(BOOST_NO_CWCHAR) && !defined(BOOST_NO_CWCTYPE)
 229 #     define BOOST_NO_CWCTYPE
 230 #  endif
 231
 232 //
 233 // We can't have a swprintf if there is no <cwchar>:
 234 //
 235 #  if defined(BOOST_NO_CWCHAR) && !defined(BOOST_NO_SWPRINTF)
 236 #     define BOOST_NO_SWPRINTF
 237 #  endif
 238
 239 //
 240 // If Win32 support is turned off, then we must turn off
 241 // threading support also, unless there is some other
 242 // thread API enabled:
 243 //
 244 #if defined(BOOST_DISABLE_WIN32) && defined(_WIN32) \
 245    && !defined(BOOST_DISABLE_THREADS) && !defined(BOOST_HAS_PTHREADS)
 246 #  define BOOST_DISABLE_THREADS
 247 #endif
 248
 249 //
 250 // Turn on threading support if the compiler thinks that it's in
 251 // multithreaded mode.  We put this here because there are only a
 252 // limited number of macros that identify this (if there's any missing
 253 // from here then add to the appropriate compiler section):
 254 //
 255 #if (defined(__MT__) || defined(_MT) || defined(_REENTRANT) \
 256     || defined(_PTHREADS) || defined(__APPLE__) || defined(__DragonFly__)) \
 257     && !defined(BOOST_HAS_THREADS)
 258 #  define BOOST_HAS_THREADS
 259 #endif
 260
 261 //
 262 // Turn threading support off if BOOST_DISABLE_THREADS is defined:
 263 //
 264 #if defined(BOOST_DISABLE_THREADS) && defined(BOOST_HAS_THREADS)
 265 #  undef BOOST_HAS_THREADS
 266 #endif
 267
 268 //
 269 // Turn threading support off if we don't recognise the threading API:
 270 //
 271 #if defined(BOOST_HAS_THREADS) && !defined(BOOST_HAS_PTHREADS)\
 272       && !defined(BOOST_HAS_WINTHREADS) && !defined(BOOST_HAS_BETHREADS)\
 273       && !defined(BOOST_HAS_MPTASKS)
 274 #  undef BOOST_HAS_THREADS
 275 #endif
 276
 277 //
 278 // Turn threading detail macros off if we don't (want to) use threading
 279 //
 280 #ifndef BOOST_HAS_THREADS
 281 #  undef BOOST_HAS_PTHREADS
 282 #  undef BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE
 283 #  undef BOOST_HAS_PTHREAD_YIELD
 284 #  undef BOOST_HAS_PTHREAD_DELAY_NP
 285 #  undef BOOST_HAS_WINTHREADS
 286 #  undef BOOST_HAS_BETHREADS
 287 #  undef BOOST_HAS_MPTASKS
 288 #endif
 289
 290 //
 291 // If the compiler claims to be C99 conformant, then it had better
 292 // have a <stdint.h>:
 293 //
 294 #  if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901)
 295 #     define BOOST_HAS_STDINT_H
 296 #     ifndef BOOST_HAS_LOG1P
 297 #        define BOOST_HAS_LOG1P
 298 #     endif
 299 #     ifndef BOOST_HAS_EXPM1
 300 #        define BOOST_HAS_EXPM1
 301 #     endif
 302 #  endif
 303
 304 //
 305 // Define BOOST_NO_SLIST and BOOST_NO_HASH if required.
 306 // Note that this is for backwards compatibility only.
 307 //
 308 #  if !defined(BOOST_HAS_SLIST) && !defined(BOOST_NO_SLIST)
 309 #     define BOOST_NO_SLIST
 310 #  endif
 311
 312 #  if !defined(BOOST_HAS_HASH) && !defined(BOOST_NO_HASH)
 313 #     define BOOST_NO_HASH
 314 #  endif
 315
 316 //
 317 // Set BOOST_SLIST_HEADER if not set already:
 318 //
 319 #if defined(BOOST_HAS_SLIST) && !defined(BOOST_SLIST_HEADER)
 320 #  define BOOST_SLIST_HEADER <slist>
 321 #endif
 322
 323 //
 324 // Set BOOST_HASH_SET_HEADER if not set already:
 325 //
 326 #if defined(BOOST_HAS_HASH) && !defined(BOOST_HASH_SET_HEADER)
 327 #  define BOOST_HASH_SET_HEADER <hash_set>
 328 #endif
 329
 330 //
 331 // Set BOOST_HASH_MAP_HEADER if not set already:
 332 //
 333 #if defined(BOOST_HAS_HASH) && !defined(BOOST_HASH_MAP_HEADER)
 334 #  define BOOST_HASH_MAP_HEADER <hash_map>
 335 #endif
 336
 337 //
 338 // Set BOOST_NO_INITIALIZER_LISTS if there is no library support.
 339 //
 340
 341 #if defined(BOOST_NO_0X_HDR_INITIALIZER_LIST) && !defined(BOOST_NO_INITIALIZER_LISTS)
 342 #  define BOOST_NO_INITIALIZER_LISTS
 343 #endif
 344 #if defined(BOOST_NO_INITIALIZER_LISTS) && !defined(BOOST_NO_0X_HDR_INITIALIZER_LIST)
 345 #  define BOOST_NO_0X_HDR_INITIALIZER_LIST
 346 #endif
 347
 348 //
 349 // Set BOOST_HAS_RVALUE_REFS when BOOST_NO_RVALUE_REFERENCES is not defined
 350 //
 351 #if !defined(BOOST_NO_RVALUE_REFERENCES) && !defined(BOOST_HAS_RVALUE_REFS)
 352 #define BOOST_HAS_RVALUE_REFS
 353 #endif
 354
 355 //
 356 // Set BOOST_HAS_VARIADIC_TMPL when BOOST_NO_VARIADIC_TEMPLATES is not defined
 357 //
 358 #if !defined(BOOST_NO_VARIADIC_TEMPLATES) && !defined(BOOST_HAS_VARIADIC_TMPL)
 359 #define BOOST_HAS_VARIADIC_TMPL
 360 #endif
 361
 362 //  BOOST_HAS_ABI_HEADERS
 363 //  This macro gets set if we have headers that fix the ABI,
 364 //  and prevent ODR violations when linking to external libraries:
 365 #if defined(BOOST_ABI_PREFIX) && defined(BOOST_ABI_SUFFIX) && !defined(BOOST_HAS_ABI_HEADERS)
 366 #  define BOOST_HAS_ABI_HEADERS
 367 #endif
 368
 369 #if defined(BOOST_HAS_ABI_HEADERS) && defined(BOOST_DISABLE_ABI_HEADERS)
 370 #  undef BOOST_HAS_ABI_HEADERS
 371 #endif
 372
 373 //  BOOST_NO_STDC_NAMESPACE workaround  --------------------------------------//
 374 //  Because std::size_t usage is so common, even in boost headers which do not
 375 //  otherwise use the C library, the <cstddef> workaround is included here so
 376 //  that ugly workaround code need not appear in many other boost headers.
 377 //  NOTE WELL: This is a workaround for non-conforming compilers; <cstddef>
 378 //  must still be #included in the usual places so that <cstddef> inclusion
 379 //  works as expected with standard conforming compilers.  The resulting
 380 //  double inclusion of <cstddef> is harmless.
 381
 382 # if defined(BOOST_NO_STDC_NAMESPACE) && defined(__cplusplus)
 383 #   include <cstddef>
 384     namespace std { using ::ptrdiff_t; using ::size_t; }
 385 # endif
 386
 387 //  Workaround for the unfortunate min/max macros defined by some platform headers
 388
 389 #define BOOST_PREVENT_MACRO_SUBSTITUTION
 390
 391 #ifndef BOOST_USING_STD_MIN
 392 #  define BOOST_USING_STD_MIN() using std::min
 393 #endif
 394
 395 #ifndef BOOST_USING_STD_MAX
 396 #  define BOOST_USING_STD_MAX() using std::max
 397 #endif
 398
 399 //  BOOST_NO_STD_MIN_MAX workaround  -----------------------------------------//
 400
 401 #  if defined(BOOST_NO_STD_MIN_MAX) && defined(__cplusplus)
 402
 403 namespace std {
 404   template <class _Tp>
 405   inline const _Tp& min BOOST_PREVENT_MACRO_SUBSTITUTION (const _Tp& __a, const _Tp& __b) {
 406     return __b < __a ? __b : __a;
 407   }
 408   template <class _Tp>
 409   inline const _Tp& max BOOST_PREVENT_MACRO_SUBSTITUTION (const _Tp& __a, const _Tp& __b) {
 410     return  __a < __b ? __b : __a;
 411   }
 412 }
 413
 414 #  endif
 415
 416 // BOOST_STATIC_CONSTANT workaround --------------------------------------- //
 417 // On compilers which don't allow in-class initialization of static integral
 418 // constant members, we must use enums as a workaround if we want the constants
 419 // to be available at compile-time. This macro gives us a convenient way to
 420 // declare such constants.
 421
 422 #  ifdef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
 423 #       define BOOST_STATIC_CONSTANT(type, assignment) enum { assignment }
 424 #  else
 425 #     define BOOST_STATIC_CONSTANT(type, assignment) static const type assignment
 426 #  endif
 427
 428 // BOOST_USE_FACET / HAS_FACET workaround ----------------------------------//
 429 // When the standard library does not have a conforming std::use_facet there
 430 // are various workarounds available, but they differ from library to library.
 431 // The same problem occurs with has_facet.
 432 // These macros provide a consistent way to access a locale's facets.
 433 // Usage:
 434 //    replace
 435 //       std::use_facet<Type>(loc);
 436 //    with
 437 //       BOOST_USE_FACET(Type, loc);
 438 //    Note do not add a std:: prefix to the front of BOOST_USE_FACET!
 439 //  Use for BOOST_HAS_FACET is analogous.
 440
 441 #if defined(BOOST_NO_STD_USE_FACET)
 442 #  ifdef BOOST_HAS_TWO_ARG_USE_FACET
 443 #     define BOOST_USE_FACET(Type, loc) std::use_facet(loc, static_cast<Type*>(0))
 444 #     define BOOST_HAS_FACET(Type, loc) std::has_facet(loc, static_cast<Type*>(0))
 445 #  elif defined(BOOST_HAS_MACRO_USE_FACET)
 446 #     define BOOST_USE_FACET(Type, loc) std::_USE(loc, Type)
 447 #     define BOOST_HAS_FACET(Type, loc) std::_HAS(loc, Type)
 448 #  elif defined(BOOST_HAS_STLP_USE_FACET)
 449 #     define BOOST_USE_FACET(Type, loc) (*std::_Use_facet<Type >(loc))
 450 #     define BOOST_HAS_FACET(Type, loc) std::has_facet< Type >(loc)
 451 #  endif
 452 #else
 453 #  define BOOST_USE_FACET(Type, loc) std::use_facet< Type >(loc)
 454 #  define BOOST_HAS_FACET(Type, loc) std::has_facet< Type >(loc)
 455 #endif
 456
 457 // BOOST_NESTED_TEMPLATE workaround ------------------------------------------//
 458 // Member templates are supported by some compilers even though they can't use
 459 // the A::template member<U> syntax, as a workaround replace:
 460 //
 461 // typedef typename A::template rebind<U> binder;
 462 //
 463 // with:
 464 //
 465 // typedef typename A::BOOST_NESTED_TEMPLATE rebind<U> binder;
 466
 467 #ifndef BOOST_NO_MEMBER_TEMPLATE_KEYWORD
 468 #  define BOOST_NESTED_TEMPLATE template
 469 #else
 470 #  define BOOST_NESTED_TEMPLATE
 471 #endif
 472
 473 // BOOST_UNREACHABLE_RETURN(x) workaround -------------------------------------//
 474 // Normally evaluates to nothing, unless BOOST_NO_UNREACHABLE_RETURN_DETECTION
 475 // is defined, in which case it evaluates to return x; Use when you have a return
 476 // statement that can never be reached.
 477
 478 #ifdef BOOST_NO_UNREACHABLE_RETURN_DETECTION
 479 #  define BOOST_UNREACHABLE_RETURN(x) return x;
 480 #else
 481 #  define BOOST_UNREACHABLE_RETURN(x)
 482 #endif
 483
 484 // BOOST_DEDUCED_TYPENAME workaround ------------------------------------------//
 485 //
 486 // Some compilers don't support the use of `typename' for dependent
 487 // types in deduced contexts, e.g.
 488 //
 489 //     template <class T> void f(T, typename T::type);
 490 //                                  ^^^^^^^^
 491 // Replace these declarations with:
 492 //
 493 //     template <class T> void f(T, BOOST_DEDUCED_TYPENAME T::type);
 494
 495 #ifndef BOOST_NO_DEDUCED_TYPENAME
 496 #  define BOOST_DEDUCED_TYPENAME typename
 497 #else
 498 #  define BOOST_DEDUCED_TYPENAME
 499 #endif
 500
 501 #ifndef BOOST_NO_TYPENAME_WITH_CTOR
 502 #  define BOOST_CTOR_TYPENAME typename
 503 #else
 504 #  define BOOST_CTOR_TYPENAME
 505 #endif
 506
 507 // long long workaround ------------------------------------------//
 508 // On gcc (and maybe other compilers?) long long is alway supported
 509 // but it's use may generate either warnings (with -ansi), or errors
 510 // (with -pedantic -ansi) unless it's use is prefixed by __extension__
 511 //
 512 #if defined(BOOST_HAS_LONG_LONG) && defined(__cplusplus)
 513 namespace boost{
 514 #  ifdef __GNUC__
 515    __extension__ typedef long long long_long_type;
 516    __extension__ typedef unsigned long long ulong_long_type;
 517 #  else
 518    typedef long long long_long_type;
 519    typedef unsigned long long ulong_long_type;
 520 #  endif
 521 }
 522 #endif
 523
 524 // BOOST_[APPEND_]EXPLICIT_TEMPLATE_[NON_]TYPE macros --------------------------//
 525 //
 526 // Some compilers have problems with function templates whose template
 527 // parameters don't appear in the function parameter list (basically
 528 // they just link one instantiation of the template in the final
 529 // executable). These macros provide a uniform way to cope with the
 530 // problem with no effects on the calling syntax.
 531
 532 // Example:
 533 //
 534 //  #include <iostream>
 535 //  #include <ostream>
 536 //  #include <typeinfo>
 537 //
 538 //  template <int n>
 539 //  void f() { std::cout << n << ' '; }
 540 //
 541 //  template <typename T>
 542 //  void g() { std::cout << typeid(T).name() << ' '; }
 543 //
 544 //  int main() {
 545 //    f<1>();
 546 //    f<2>();
 547 //
 548 //    g<int>();
 549 //    g<double>();
 550 //  }
 551 //
 552 // With VC++ 6.0 the output is:
 553 //
 554 //   2 2 double double
 555 //
 556 // To fix it, write
 557 //
 558 //   template <int n>
 559 //   void f(BOOST_EXPLICIT_TEMPLATE_NON_TYPE(int, n)) { ... }
 560 //
 561 //   template <typename T>
 562 //   void g(BOOST_EXPLICIT_TEMPLATE_TYPE(T)) { ... }
 563 //
 564
 565
 566 #if defined(BOOST_NO_EXPLICIT_FUNCTION_TEMPLATE_ARGUMENTS) && defined(__cplusplus)
 567
 568 #  include "boost/type.hpp"
 569 #  include "boost/non_type.hpp"
 570
 571 #  define BOOST_EXPLICIT_TEMPLATE_TYPE(t)              boost::type<t>* = 0
 572 #  define BOOST_EXPLICIT_TEMPLATE_TYPE_SPEC(t)         boost::type<t>*
 573 #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE(t, v)       boost::non_type<t, v>* = 0
 574 #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)  boost::non_type<t, v>*
 575
 576 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(t)        \
 577              , BOOST_EXPLICIT_TEMPLATE_TYPE(t)
 578 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE_SPEC(t)   \
 579              , BOOST_EXPLICIT_TEMPLATE_TYPE_SPEC(t)
 580 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE(t, v) \
 581              , BOOST_EXPLICIT_TEMPLATE_NON_TYPE(t, v)
 582 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)    \
 583              , BOOST_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)
 584
 585 #else
 586
 587 // no workaround needed: expand to nothing
 588
 589 #  define BOOST_EXPLICIT_TEMPLATE_TYPE(t)
 590 #  define BOOST_EXPLICIT_TEMPLATE_TYPE_SPEC(t)
 591 #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE(t, v)
 592 #  define BOOST_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)
 593
 594 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(t)
 595 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE_SPEC(t)
 596 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE(t, v)
 597 #  define BOOST_APPEND_EXPLICIT_TEMPLATE_NON_TYPE_SPEC(t, v)
 598
 599
 600 #endif // defined BOOST_NO_EXPLICIT_FUNCTION_TEMPLATE_ARGUMENTS
 601
 602 // When BOOST_NO_STD_TYPEINFO is defined, we can just import
 603 // the global definition into std namespace:
 604 #if defined(BOOST_NO_STD_TYPEINFO) && defined(__cplusplus)
 605 #include <typeinfo>
 606 namespace std{ using ::type_info; }
 607 #endif
 608
 609 // ---------------------------------------------------------------------------//
 610
 611 //
 612 // Helper macro BOOST_STRINGIZE:
 613 // Converts the parameter X to a string after macro replacement
 614 // on X has been performed.
 615 //
 616 #define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X)
 617 #define BOOST_DO_STRINGIZE(X) #X
 618
 619 //
 620 // Helper macro BOOST_JOIN:
 621 // The following piece of macro magic joins the two
 622 // arguments together, even when one of the arguments is
 623 // itself a macro (see 16.3.1 in C++ standard).  The key
 624 // is that macro expansion of macro arguments does not
 625 // occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN.
 626 //
 627 #define BOOST_JOIN( X, Y ) BOOST_DO_JOIN( X, Y )
 628 #define BOOST_DO_JOIN( X, Y ) BOOST_DO_JOIN2(X,Y)
 629 #define BOOST_DO_JOIN2( X, Y ) X##Y
 630
 631 //
 632 // Set some default values for compiler/library/platform names.
 633 // These are for debugging config setup only:
 634 //
 635 #  ifndef BOOST_COMPILER
 636 #     define BOOST_COMPILER "Unknown ISO C++ Compiler"
 637 #  endif
 638 #  ifndef BOOST_STDLIB
 639 #     define BOOST_STDLIB "Unknown ISO standard library"
 640 #  endif
 641 #  ifndef BOOST_PLATFORM
 642 #     if defined(unix) || defined(__unix) || defined(_XOPEN_SOURCE) \
 643          || defined(_POSIX_SOURCE)
 644 #        define BOOST_PLATFORM "Generic Unix"
 645 #     else
 646 #        define BOOST_PLATFORM "Unknown"
 647 #     endif
 648 #  endif
 649
 650 //
 651 // Set some default values GPU support
 652 //
 653 #  ifndef BOOST_GPU_ENABLED
 654 #  define BOOST_GPU_ENABLED
 655 #  endif
 656
 657 //
 658 // constexpr workarounds
 659 //
 660 #if defined(BOOST_NO_CONSTEXPR)
 661 #define BOOST_CONSTEXPR
 662 #define BOOST_CONSTEXPR_OR_CONST const
 663 #else
 664 #define BOOST_CONSTEXPR constexpr
 665 #define BOOST_CONSTEXPR_OR_CONST constexpr
 666 #endif
 667
 668 #define BOOST_STATIC_CONSTEXPR  static BOOST_CONSTEXPR_OR_CONST
 669
 670 #endif
 671