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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 //
541 // Helper macro BOOST_STRINGIZE:
542 // Converts the parameter X to a string after macro replacement
543 // on X has been performed.
544 //
545 #define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X)
546 #define BOOST_DO_STRINGIZE(X) #X
547
548 //
549 // Helper macro BOOST_JOIN:
550 // The following piece of macro magic joins the two
551 // arguments together, even when one of the arguments is
552 // itself a macro (see 16.3.1 in C++ standard). The key
553 // is that macro expansion of macro arguments does not
554 // occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN.
555 //
556 #define BOOST_JOIN( X, Y ) BOOST_DO_JOIN( X, Y )
557 #define BOOST_DO_JOIN( X, Y ) BOOST_DO_JOIN2(X,Y)
558 #define BOOST_DO_JOIN2( X, Y ) X##Y
559
560 //
561 // Set some default values for compiler/library/platform names.
562 // These are for debugging config setup only:
563 //
564 # ifndef BOOST_COMPILER
565 # define BOOST_COMPILER "Unknown ISO C++ Compiler"
566 # endif
567 # ifndef BOOST_STDLIB
568 # define BOOST_STDLIB "Unknown ISO standard library"
569 # endif
570 # ifndef BOOST_PLATFORM
571 # if defined(unix) || defined(__unix) || defined(_XOPEN_SOURCE) \
572 || defined(_POSIX_SOURCE)
573 # define BOOST_PLATFORM "Generic Unix"
574 # else
575 # define BOOST_PLATFORM "Unknown"
576 # endif
577 # endif
578
579 //
580 // Set some default values GPU support
581 //
582 # ifndef BOOST_GPU_ENABLED
583 # define BOOST_GPU_ENABLED
584 # endif
585
586 // BOOST_FORCEINLINE ---------------------------------------------//
587 // Macro to use in place of 'inline' to force a function to be inline
588 #if !defined(BOOST_FORCEINLINE)
589 # if defined(_MSC_VER)
590 # define BOOST_FORCEINLINE __forceinline
591 # elif defined(__GNUC__) && __GNUC__ > 3
592 // Clang also defines __GNUC__ (as 4)
593 # define BOOST_FORCEINLINE inline __attribute__ ((__always_inline__))
594 # else
595 # define BOOST_FORCEINLINE inline
596 # endif
597 #endif
598
599 // BOOST_NOINLINE ---------------------------------------------//
600 // Macro to use in place of 'inline' to prevent a function to be inlined
601 #if !defined(BOOST_NOINLINE)
602 # if defined(_MSC_VER)
603 # define BOOST_NOINLINE __declspec(noinline)
604 # elif defined(__GNUC__) && __GNUC__ > 3
605 // Clang also defines __GNUC__ (as 4)
606 # if defined(__CUDACC__)
607 // nvcc doesn't always parse __noinline__,
608 // see: https://svn.boost.org/trac/boost/ticket/9392
609 # define BOOST_NOINLINE __attribute__ ((noinline))
610 # else
611 # define BOOST_NOINLINE __attribute__ ((__noinline__))
612 # endif
613 # else
614 # define BOOST_NOINLINE
615 # endif
616 #endif
617
618 // BOOST_NORETURN ---------------------------------------------//
619 // Macro to use before a function declaration/definition to designate
620 // the function as not returning normally (i.e. with a return statement
621 // or by leaving the function scope, if the function return type is void).
622 #if !defined(BOOST_NORETURN)
623 # if defined(_MSC_VER)
624 # define BOOST_NORETURN __declspec(noreturn)
625 # elif defined(__GNUC__)
626 # define BOOST_NORETURN __attribute__ ((__noreturn__))
627 # elif defined(__has_attribute) && defined(__SUNPRO_CC)
628 # if __has_attribute(noreturn)
629 # define BOOST_NORETURN [[noreturn]]
630 # endif
631 # elif defined(__has_cpp_attribute)
632 # if __has_cpp_attribute(noreturn)
633 # define BOOST_NORETURN [[noreturn]]
634 # endif
635 # endif
636 #endif
637
638 #if !defined(BOOST_NORETURN)
639 # define BOOST_NO_NORETURN
640 # define BOOST_NORETURN
641 #endif
642
643 // Branch prediction hints
644 // These macros are intended to wrap conditional expressions that yield true or false
645 //
646 // if (BOOST_LIKELY(var == 10))
647 // {
648 // // the most probable code here
649 // }
650 //
651 #if !defined(BOOST_LIKELY)
652 # define BOOST_LIKELY(x) x
653 #endif
654 #if !defined(BOOST_UNLIKELY)
655 # define BOOST_UNLIKELY(x) x
656 #endif
657
658 // Type and data alignment specification
659 //
660 #if !defined(BOOST_NO_CXX11_ALIGNAS)
661 # define BOOST_ALIGNMENT(x) alignas(x)
662 #elif defined(_MSC_VER)
663 # define BOOST_ALIGNMENT(x) __declspec(align(x))
664 #elif defined(__GNUC__)
665 # define BOOST_ALIGNMENT(x) __attribute__ ((__aligned__(x)))
666 #else
667 # define BOOST_NO_ALIGNMENT
668 # define BOOST_ALIGNMENT(x)
669 #endif
670
671 // Lack of non-public defaulted functions is implied by the lack of any defaulted functions
672 #if !defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS) && defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
673 # define BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS
674 #endif
675
676 // Defaulted and deleted function declaration helpers
677 // These macros are intended to be inside a class definition.
678 // BOOST_DEFAULTED_FUNCTION accepts the function declaration and its
679 // body, which will be used if the compiler doesn't support defaulted functions.
680 // BOOST_DELETED_FUNCTION only accepts the function declaration. It
681 // will expand to a private function declaration, if the compiler doesn't support
682 // deleted functions. Because of this it is recommended to use BOOST_DELETED_FUNCTION
683 // in the end of the class definition.
684 //
685 // class my_class
686 // {
687 // public:
688 // // Default-constructible
689 // BOOST_DEFAULTED_FUNCTION(my_class(), {})
690 // // Copying prohibited
691 // BOOST_DELETED_FUNCTION(my_class(my_class const&))
692 // BOOST_DELETED_FUNCTION(my_class& operator= (my_class const&))
693 // };
694 //
695 #if !(defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS))
696 # define BOOST_DEFAULTED_FUNCTION(fun, body) fun = default;
697 #else
698 # define BOOST_DEFAULTED_FUNCTION(fun, body) fun body
699 #endif
700
701 #if !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
702 # define BOOST_DELETED_FUNCTION(fun) fun = delete;
703 #else
704 # define BOOST_DELETED_FUNCTION(fun) private: fun;
705 #endif
706
707 //
708 // Set BOOST_NO_DECLTYPE_N3276 when BOOST_NO_DECLTYPE is defined
709 //
710 #if defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_CXX11_DECLTYPE_N3276)
711 #define BOOST_NO_CXX11_DECLTYPE_N3276 BOOST_NO_CXX11_DECLTYPE
712 #endif
713
714 // -------------------- Deprecated macros for 1.50 ---------------------------
715 // These will go away in a future release
716
717 // Use BOOST_NO_CXX11_HDR_UNORDERED_SET or BOOST_NO_CXX11_HDR_UNORDERED_MAP
718 // instead of BOOST_NO_STD_UNORDERED
719 #if defined(BOOST_NO_CXX11_HDR_UNORDERED_MAP) || defined (BOOST_NO_CXX11_HDR_UNORDERED_SET)
720 # ifndef BOOST_NO_CXX11_STD_UNORDERED
721 # define BOOST_NO_CXX11_STD_UNORDERED
722 # endif
723 #endif
724
725 // Use BOOST_NO_CXX11_HDR_INITIALIZER_LIST instead of BOOST_NO_INITIALIZER_LISTS
726 #if defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST) && !defined(BOOST_NO_INITIALIZER_LISTS)
727 # define BOOST_NO_INITIALIZER_LISTS
728 #endif
729
730 // Use BOOST_NO_CXX11_HDR_ARRAY instead of BOOST_NO_0X_HDR_ARRAY
731 #if defined(BOOST_NO_CXX11_HDR_ARRAY) && !defined(BOOST_NO_0X_HDR_ARRAY)
732 # define BOOST_NO_0X_HDR_ARRAY
733 #endif
734 // Use BOOST_NO_CXX11_HDR_CHRONO instead of BOOST_NO_0X_HDR_CHRONO
735 #if defined(BOOST_NO_CXX11_HDR_CHRONO) && !defined(BOOST_NO_0X_HDR_CHRONO)
736 # define BOOST_NO_0X_HDR_CHRONO
737 #endif
738 // Use BOOST_NO_CXX11_HDR_CODECVT instead of BOOST_NO_0X_HDR_CODECVT
739 #if defined(BOOST_NO_CXX11_HDR_CODECVT) && !defined(BOOST_NO_0X_HDR_CODECVT)
740 # define BOOST_NO_0X_HDR_CODECVT
741 #endif
742 // Use BOOST_NO_CXX11_HDR_CONDITION_VARIABLE instead of BOOST_NO_0X_HDR_CONDITION_VARIABLE
743 #if defined(BOOST_NO_CXX11_HDR_CONDITION_VARIABLE) && !defined(BOOST_NO_0X_HDR_CONDITION_VARIABLE)
744 # define BOOST_NO_0X_HDR_CONDITION_VARIABLE
745 #endif
746 // Use BOOST_NO_CXX11_HDR_FORWARD_LIST instead of BOOST_NO_0X_HDR_FORWARD_LIST
747 #if defined(BOOST_NO_CXX11_HDR_FORWARD_LIST) && !defined(BOOST_NO_0X_HDR_FORWARD_LIST)
748 # define BOOST_NO_0X_HDR_FORWARD_LIST
749 #endif
750 // Use BOOST_NO_CXX11_HDR_FUTURE instead of BOOST_NO_0X_HDR_FUTURE
751 #if defined(BOOST_NO_CXX11_HDR_FUTURE) && !defined(BOOST_NO_0X_HDR_FUTURE)
752 # define BOOST_NO_0X_HDR_FUTURE
753 #endif
754
755 // Use BOOST_NO_CXX11_HDR_INITIALIZER_LIST
756 // instead of BOOST_NO_0X_HDR_INITIALIZER_LIST or BOOST_NO_INITIALIZER_LISTS
757 #ifdef BOOST_NO_CXX11_HDR_INITIALIZER_LIST
758 # ifndef BOOST_NO_0X_HDR_INITIALIZER_LIST
759 # define BOOST_NO_0X_HDR_INITIALIZER_LIST
760 # endif
761 # ifndef BOOST_NO_INITIALIZER_LISTS
762 # define BOOST_NO_INITIALIZER_LISTS
763 # endif
764 #endif
765
766 // Use BOOST_NO_CXX11_HDR_MUTEX instead of BOOST_NO_0X_HDR_MUTEX
767 #if defined(BOOST_NO_CXX11_HDR_MUTEX) && !defined(BOOST_NO_0X_HDR_MUTEX)
768 # define BOOST_NO_0X_HDR_MUTEX
769 #endif
770 // Use BOOST_NO_CXX11_HDR_RANDOM instead of BOOST_NO_0X_HDR_RANDOM
771 #if defined(BOOST_NO_CXX11_HDR_RANDOM) && !defined(BOOST_NO_0X_HDR_RANDOM)
772 # define BOOST_NO_0X_HDR_RANDOM
773 #endif
774 // Use BOOST_NO_CXX11_HDR_RATIO instead of BOOST_NO_0X_HDR_RATIO
775 #if defined(BOOST_NO_CXX11_HDR_RATIO) && !defined(BOOST_NO_0X_HDR_RATIO)
776 # define BOOST_NO_0X_HDR_RATIO
777 #endif
778 // Use BOOST_NO_CXX11_HDR_REGEX instead of BOOST_NO_0X_HDR_REGEX
779 #if defined(BOOST_NO_CXX11_HDR_REGEX) && !defined(BOOST_NO_0X_HDR_REGEX)
780 # define BOOST_NO_0X_HDR_REGEX
781 #endif
782 // Use BOOST_NO_CXX11_HDR_SYSTEM_ERROR instead of BOOST_NO_0X_HDR_SYSTEM_ERROR
783 #if defined(BOOST_NO_CXX11_HDR_SYSTEM_ERROR) && !defined(BOOST_NO_0X_HDR_SYSTEM_ERROR)
784 # define BOOST_NO_0X_HDR_SYSTEM_ERROR
785 #endif
786 // Use BOOST_NO_CXX11_HDR_THREAD instead of BOOST_NO_0X_HDR_THREAD
787 #if defined(BOOST_NO_CXX11_HDR_THREAD) && !defined(BOOST_NO_0X_HDR_THREAD)
788 # define BOOST_NO_0X_HDR_THREAD
789 #endif
790 // Use BOOST_NO_CXX11_HDR_TUPLE instead of BOOST_NO_0X_HDR_TUPLE
791 #if defined(BOOST_NO_CXX11_HDR_TUPLE) && !defined(BOOST_NO_0X_HDR_TUPLE)
792 # define BOOST_NO_0X_HDR_TUPLE
793 #endif
794 // Use BOOST_NO_CXX11_HDR_TYPE_TRAITS instead of BOOST_NO_0X_HDR_TYPE_TRAITS
795 #if defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS) && !defined(BOOST_NO_0X_HDR_TYPE_TRAITS)
796 # define BOOST_NO_0X_HDR_TYPE_TRAITS
797 #endif
798 // Use BOOST_NO_CXX11_HDR_TYPEINDEX instead of BOOST_NO_0X_HDR_TYPEINDEX
799 #if defined(BOOST_NO_CXX11_HDR_TYPEINDEX) && !defined(BOOST_NO_0X_HDR_TYPEINDEX)
800 # define BOOST_NO_0X_HDR_TYPEINDEX
801 #endif
802 // Use BOOST_NO_CXX11_HDR_UNORDERED_MAP instead of BOOST_NO_0X_HDR_UNORDERED_MAP
803 #if defined(BOOST_NO_CXX11_HDR_UNORDERED_MAP) && !defined(BOOST_NO_0X_HDR_UNORDERED_MAP)
804 # define BOOST_NO_0X_HDR_UNORDERED_MAP
805 #endif
806 // Use BOOST_NO_CXX11_HDR_UNORDERED_SET instead of BOOST_NO_0X_HDR_UNORDERED_SET
807 #if defined(BOOST_NO_CXX11_HDR_UNORDERED_SET) && !defined(BOOST_NO_0X_HDR_UNORDERED_SET)
808 # define BOOST_NO_0X_HDR_UNORDERED_SET
809 #endif
810
811 // ------------------ End of deprecated macros for 1.50 ---------------------------
812
813 // -------------------- Deprecated macros for 1.51 ---------------------------
814 // These will go away in a future release
815
816 // Use BOOST_NO_CXX11_AUTO_DECLARATIONS instead of BOOST_NO_AUTO_DECLARATIONS
817 #if defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) && !defined(BOOST_NO_AUTO_DECLARATIONS)
818 # define BOOST_NO_AUTO_DECLARATIONS
819 #endif
820 // Use BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS instead of BOOST_NO_AUTO_MULTIDECLARATIONS
821 #if defined(BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS) && !defined(BOOST_NO_AUTO_MULTIDECLARATIONS)
822 # define BOOST_NO_AUTO_MULTIDECLARATIONS
823 #endif
824 // Use BOOST_NO_CXX11_CHAR16_T instead of BOOST_NO_CHAR16_T
825 #if defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CHAR16_T)
826 # define BOOST_NO_CHAR16_T
827 #endif
828 // Use BOOST_NO_CXX11_CHAR32_T instead of BOOST_NO_CHAR32_T
829 #if defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CHAR32_T)
830 # define BOOST_NO_CHAR32_T
831 #endif
832 // Use BOOST_NO_CXX11_TEMPLATE_ALIASES instead of BOOST_NO_TEMPLATE_ALIASES
833 #if defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) && !defined(BOOST_NO_TEMPLATE_ALIASES)
834 # define BOOST_NO_TEMPLATE_ALIASES
835 #endif
836 // Use BOOST_NO_CXX11_CONSTEXPR instead of BOOST_NO_CONSTEXPR
837 #if defined(BOOST_NO_CXX11_CONSTEXPR) && !defined(BOOST_NO_CONSTEXPR)
838 # define BOOST_NO_CONSTEXPR
839 #endif
840 // Use BOOST_NO_CXX11_DECLTYPE_N3276 instead of BOOST_NO_DECLTYPE_N3276
841 #if defined(BOOST_NO_CXX11_DECLTYPE_N3276) && !defined(BOOST_NO_DECLTYPE_N3276)
842 # define BOOST_NO_DECLTYPE_N3276
843 #endif
844 // Use BOOST_NO_CXX11_DECLTYPE instead of BOOST_NO_DECLTYPE
845 #if defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_DECLTYPE)
846 # define BOOST_NO_DECLTYPE
847 #endif
848 // Use BOOST_NO_CXX11_DEFAULTED_FUNCTIONS instead of BOOST_NO_DEFAULTED_FUNCTIONS
849 #if defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && !defined(BOOST_NO_DEFAULTED_FUNCTIONS)
850 # define BOOST_NO_DEFAULTED_FUNCTIONS
851 #endif
852 // Use BOOST_NO_CXX11_DELETED_FUNCTIONS instead of BOOST_NO_DELETED_FUNCTIONS
853 #if defined(BOOST_NO_CXX11_DELETED_FUNCTIONS) && !defined(BOOST_NO_DELETED_FUNCTIONS)
854 # define BOOST_NO_DELETED_FUNCTIONS
855 #endif
856 // Use BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS instead of BOOST_NO_EXPLICIT_CONVERSION_OPERATORS
857 #if defined(BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS) && !defined(BOOST_NO_EXPLICIT_CONVERSION_OPERATORS)
858 # define BOOST_NO_EXPLICIT_CONVERSION_OPERATORS
859 #endif
860 // Use BOOST_NO_CXX11_EXTERN_TEMPLATE instead of BOOST_NO_EXTERN_TEMPLATE
861 #if defined(BOOST_NO_CXX11_EXTERN_TEMPLATE) && !defined(BOOST_NO_EXTERN_TEMPLATE)
862 # define BOOST_NO_EXTERN_TEMPLATE
863 #endif
864 // Use BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS instead of BOOST_NO_FUNCTION_TEMPLATE_DEFAULT_ARGS
865 #if defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS) && !defined(BOOST_NO_FUNCTION_TEMPLATE_DEFAULT_ARGS)
866 # define BOOST_NO_FUNCTION_TEMPLATE_DEFAULT_ARGS
867 #endif
868 // Use BOOST_NO_CXX11_LAMBDAS instead of BOOST_NO_LAMBDAS
869 #if defined(BOOST_NO_CXX11_LAMBDAS) && !defined(BOOST_NO_LAMBDAS)
870 # define BOOST_NO_LAMBDAS
871 #endif
872 // Use BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS instead of BOOST_NO_LOCAL_CLASS_TEMPLATE_PARAMETERS
873 #if defined(BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS) && !defined(BOOST_NO_LOCAL_CLASS_TEMPLATE_PARAMETERS)
874 # define BOOST_NO_LOCAL_CLASS_TEMPLATE_PARAMETERS
875 #endif
876 // Use BOOST_NO_CXX11_NOEXCEPT instead of BOOST_NO_NOEXCEPT
877 #if defined(BOOST_NO_CXX11_NOEXCEPT) && !defined(BOOST_NO_NOEXCEPT)
878 # define BOOST_NO_NOEXCEPT
879 #endif
880 // Use BOOST_NO_CXX11_NULLPTR instead of BOOST_NO_NULLPTR
881 #if defined(BOOST_NO_CXX11_NULLPTR) && !defined(BOOST_NO_NULLPTR)
882 # define BOOST_NO_NULLPTR
883 #endif
884 // Use BOOST_NO_CXX11_RAW_LITERALS instead of BOOST_NO_RAW_LITERALS
885 #if defined(BOOST_NO_CXX11_RAW_LITERALS) && !defined(BOOST_NO_RAW_LITERALS)
886 # define BOOST_NO_RAW_LITERALS
887 #endif
888 // Use BOOST_NO_CXX11_RVALUE_REFERENCES instead of BOOST_NO_RVALUE_REFERENCES
889 #if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_RVALUE_REFERENCES)
890 # define BOOST_NO_RVALUE_REFERENCES
891 #endif
892 // Use BOOST_NO_CXX11_SCOPED_ENUMS instead of BOOST_NO_SCOPED_ENUMS
893 #if defined(BOOST_NO_CXX11_SCOPED_ENUMS) && !defined(BOOST_NO_SCOPED_ENUMS)
894 # define BOOST_NO_SCOPED_ENUMS
895 #endif
896 // Use BOOST_NO_CXX11_STATIC_ASSERT instead of BOOST_NO_STATIC_ASSERT
897 #if defined(BOOST_NO_CXX11_STATIC_ASSERT) && !defined(BOOST_NO_STATIC_ASSERT)
898 # define BOOST_NO_STATIC_ASSERT
899 #endif
900 // Use BOOST_NO_CXX11_STD_UNORDERED instead of BOOST_NO_STD_UNORDERED
901 #if defined(BOOST_NO_CXX11_STD_UNORDERED) && !defined(BOOST_NO_STD_UNORDERED)
902 # define BOOST_NO_STD_UNORDERED
903 #endif
904 // Use BOOST_NO_CXX11_UNICODE_LITERALS instead of BOOST_NO_UNICODE_LITERALS
905 #if defined(BOOST_NO_CXX11_UNICODE_LITERALS) && !defined(BOOST_NO_UNICODE_LITERALS)
906 # define BOOST_NO_UNICODE_LITERALS
907 #endif
908 // Use BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX instead of BOOST_NO_UNIFIED_INITIALIZATION_SYNTAX
909 #if defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX) && !defined(BOOST_NO_UNIFIED_INITIALIZATION_SYNTAX)
910 # define BOOST_NO_UNIFIED_INITIALIZATION_SYNTAX
911 #endif
912 // Use BOOST_NO_CXX11_VARIADIC_TEMPLATES instead of BOOST_NO_VARIADIC_TEMPLATES
913 #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_VARIADIC_TEMPLATES)
914 # define BOOST_NO_VARIADIC_TEMPLATES
915 #endif
916 // Use BOOST_NO_CXX11_VARIADIC_MACROS instead of BOOST_NO_VARIADIC_MACROS
917 #if defined(BOOST_NO_CXX11_VARIADIC_MACROS) && !defined(BOOST_NO_VARIADIC_MACROS)
918 # define BOOST_NO_VARIADIC_MACROS
919 #endif
920 // Use BOOST_NO_CXX11_NUMERIC_LIMITS instead of BOOST_NO_NUMERIC_LIMITS_LOWEST
921 #if defined(BOOST_NO_CXX11_NUMERIC_LIMITS) && !defined(BOOST_NO_NUMERIC_LIMITS_LOWEST)
922 # define BOOST_NO_NUMERIC_LIMITS_LOWEST
923 #endif
924 // ------------------ End of deprecated macros for 1.51 ---------------------------
925
926
927
928 //
929 // Helper macros BOOST_NOEXCEPT, BOOST_NOEXCEPT_IF, BOOST_NOEXCEPT_EXPR
930 // These aid the transition to C++11 while still supporting C++03 compilers
931 //
932 #ifdef BOOST_NO_CXX11_NOEXCEPT
933 # define BOOST_NOEXCEPT
934 # define BOOST_NOEXCEPT_OR_NOTHROW throw()
935 # define BOOST_NOEXCEPT_IF(Predicate)
936 # define BOOST_NOEXCEPT_EXPR(Expression) false
937 #else
938 # define BOOST_NOEXCEPT noexcept
939 # define BOOST_NOEXCEPT_OR_NOTHROW noexcept
940 # define BOOST_NOEXCEPT_IF(Predicate) noexcept((Predicate))
941 # define BOOST_NOEXCEPT_EXPR(Expression) noexcept((Expression))
942 #endif
943 //
944 // Helper macro BOOST_FALLTHROUGH
945 // Fallback definition of BOOST_FALLTHROUGH macro used to mark intended
946 // fall-through between case labels in a switch statement. We use a definition
947 // that requires a semicolon after it to avoid at least one type of misuse even
948 // on unsupported compilers.
949 //
950 #ifndef BOOST_FALLTHROUGH
951 # define BOOST_FALLTHROUGH ((void)0)
952 #endif
953
954 //
955 // constexpr workarounds
956 //
957 #if defined(BOOST_NO_CXX11_CONSTEXPR)
958 #define BOOST_CONSTEXPR
959 #define BOOST_CONSTEXPR_OR_CONST const
960 #else
961 #define BOOST_CONSTEXPR constexpr
962 #define BOOST_CONSTEXPR_OR_CONST constexpr
963 #endif
964 #if defined(BOOST_NO_CXX14_CONSTEXPR)
965 #define BOOST_CXX14_CONSTEXPR
966 #else
967 #define BOOST_CXX14_CONSTEXPR constexpr
968 #endif
969
970 //
971 // Unused variable/typedef workarounds:
972 //
973 #ifndef BOOST_ATTRIBUTE_UNUSED
974 # define BOOST_ATTRIBUTE_UNUSED
975 #endif
976
977 #define BOOST_STATIC_CONSTEXPR static BOOST_CONSTEXPR_OR_CONST
978
979 //
980 // Set BOOST_HAS_STATIC_ASSERT when BOOST_NO_CXX11_STATIC_ASSERT is not defined
981 //
982 #if !defined(BOOST_NO_CXX11_STATIC_ASSERT) && !defined(BOOST_HAS_STATIC_ASSERT)
983 # define BOOST_HAS_STATIC_ASSERT
984 #endif
985
986 //
987 // Set BOOST_HAS_RVALUE_REFS when BOOST_NO_CXX11_RVALUE_REFERENCES is not defined
988 //
989 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_HAS_RVALUE_REFS)
990 #define BOOST_HAS_RVALUE_REFS
991 #endif
992
993 //
994 // Set BOOST_HAS_VARIADIC_TMPL when BOOST_NO_CXX11_VARIADIC_TEMPLATES is not defined
995 //
996 #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_HAS_VARIADIC_TMPL)
997 #define BOOST_HAS_VARIADIC_TMPL
998 #endif
999 //
1000 // Set BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS when
1001 // BOOST_NO_CXX11_VARIADIC_TEMPLATES is set:
1002 //
1003 #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS)
1004 # define BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
1005 #endif
1006
1007 //
1008 // Finish off with checks for macros that are depricated / no longer supported,
1009 // if any of these are set then it's very likely that much of Boost will no
1010 // longer work. So stop with a #error for now, but give the user a chance
1011 // to continue at their own risk if they really want to:
1012 //
1013 #if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_CONFIG_ALLOW_DEPRECATED)
1014 # 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!!!"
1015 #endif
1016
1017 #endif