1// -*- C++ -*-
2//===--------------------------- __config ---------------------------------===//
3//
4// The LLVM Compiler Infrastructure
5//
6// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
8//
9//===----------------------------------------------------------------------===//
10
11#ifndef _LIBCPP_CONFIG
12#define _LIBCPP_CONFIG
13
14#if defined(_MSC_VER) && !defined(__clang__)
15#define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
16#endif
17
18#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
19#pragma GCC system_header
20#endif
21
22#ifdef __cplusplus
23
24#ifdef __GNUC__
25#define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__)
26#else
27#define _GNUC_VER 0
28#endif
29
30#define _LIBCPP_VERSION 3900
31
32#ifndef _LIBCPP_ABI_VERSION
33#define _LIBCPP_ABI_VERSION 1
34#endif
35
36#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2
37// Change short string represention so that string data starts at offset 0,
38// improving its alignment in some cases.
39#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
40// Fix deque iterator type in order to support incomplete types.
41#define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE
42// Fix undefined behavior in how std::list stores it's linked nodes.
43#define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB
44// Fix undefined behavior in how __tree stores its end and parent nodes.
45#define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB
46#define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB
47#define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE
48#define _LIBCPP_ABI_VARIADIC_LOCK_GUARD
49#elif _LIBCPP_ABI_VERSION == 1
50// Feature macros for disabling pre ABI v1 features. All of these options
51// are deprecated.
52#if defined(__FreeBSD__)
53#define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR
54#endif
55#endif
56
57#ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR
58#error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \
59 use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead
60#endif
61
62#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y
63#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y)
64
65#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION)
66
67
68#ifndef __has_attribute
69#define __has_attribute(__x) 0
70#endif
71#ifndef __has_builtin
72#define __has_builtin(__x) 0
73#endif
74#ifndef __has_extension
75#define __has_extension(__x) 0
76#endif
77#ifndef __has_feature
78#define __has_feature(__x) 0
79#endif
80// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by
81// the compiler and '1' otherwise.
82#ifndef __is_identifier
83#define __is_identifier(__x) 1
84#endif
85
86
87#ifdef __LITTLE_ENDIAN__
88#if __LITTLE_ENDIAN__
89#define _LIBCPP_LITTLE_ENDIAN 1
90#define _LIBCPP_BIG_ENDIAN 0
91#endif // __LITTLE_ENDIAN__
92#endif // __LITTLE_ENDIAN__
93
94#ifdef __BIG_ENDIAN__
95#if __BIG_ENDIAN__
96#define _LIBCPP_LITTLE_ENDIAN 0
97#define _LIBCPP_BIG_ENDIAN 1
98#endif // __BIG_ENDIAN__
99#endif // __BIG_ENDIAN__
100
101#ifdef __BYTE_ORDER__
102#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
103#define _LIBCPP_LITTLE_ENDIAN 1
104#define _LIBCPP_BIG_ENDIAN 0
105#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
106#define _LIBCPP_LITTLE_ENDIAN 0
107#define _LIBCPP_BIG_ENDIAN 1
108#endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
109#endif // __BYTE_ORDER__
110
111#ifdef __FreeBSD__
112# include <sys/endian.h>
113# if _BYTE_ORDER == _LITTLE_ENDIAN
114# define _LIBCPP_LITTLE_ENDIAN 1
115# define _LIBCPP_BIG_ENDIAN 0
116# else // _BYTE_ORDER == _LITTLE_ENDIAN
117# define _LIBCPP_LITTLE_ENDIAN 0
118# define _LIBCPP_BIG_ENDIAN 1
119# endif // _BYTE_ORDER == _LITTLE_ENDIAN
120# ifndef __LONG_LONG_SUPPORTED
121# define _LIBCPP_HAS_NO_LONG_LONG
122# endif // __LONG_LONG_SUPPORTED
123#endif // __FreeBSD__
124
125#ifdef __NetBSD__
126# include <sys/endian.h>
127# if _BYTE_ORDER == _LITTLE_ENDIAN
128# define _LIBCPP_LITTLE_ENDIAN 1
129# define _LIBCPP_BIG_ENDIAN 0
130# else // _BYTE_ORDER == _LITTLE_ENDIAN
131# define _LIBCPP_LITTLE_ENDIAN 0
132# define _LIBCPP_BIG_ENDIAN 1
133# endif // _BYTE_ORDER == _LITTLE_ENDIAN
134# define _LIBCPP_HAS_QUICK_EXIT
135#endif // __NetBSD__
136
137#ifdef _WIN32
138# define _LIBCPP_LITTLE_ENDIAN 1
139# define _LIBCPP_BIG_ENDIAN 0
140// Compiler intrinsics (MSVC)
141#if defined(_MSC_VER) && _MSC_VER >= 1400
142# define _LIBCPP_HAS_IS_BASE_OF
143# endif
144# if defined(_MSC_VER) && !defined(__clang__)
145# define _LIBCPP_MSVC // Using Microsoft Visual C++ compiler
146# define _LIBCPP_TOSTRING2(x) #x
147# define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x)
148# define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x))
149# endif
150# // If mingw not explicitly detected, assume using MS C runtime only.
151# ifndef __MINGW32__
152# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library
153# endif
154#endif // _WIN32
155
156#ifdef __sun__
157# include <sys/isa_defs.h>
158# ifdef _LITTLE_ENDIAN
159# define _LIBCPP_LITTLE_ENDIAN 1
160# define _LIBCPP_BIG_ENDIAN 0
161# else
162# define _LIBCPP_LITTLE_ENDIAN 0
163# define _LIBCPP_BIG_ENDIAN 1
164# endif
165#endif // __sun__
166
167#if defined(__CloudABI__)
168 // Certain architectures provide arc4random(). Prefer using
169 // arc4random() over /dev/{u,}random to make it possible to obtain
170 // random data even when using sandboxing mechanisms such as chroots,
171 // Capsicum, etc.
172# define _LIBCPP_USING_ARC4_RANDOM
173#elif defined(__native_client__)
174 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access,
175 // including accesses to the special files under /dev. C++11's
176 // std::random_device is instead exposed through a NaCl syscall.
177# define _LIBCPP_USING_NACL_RANDOM
178#elif defined(_WIN32)
179# define _LIBCPP_USING_WIN32_RANDOM
180#else
181# define _LIBCPP_USING_DEV_RANDOM
182#endif
183
184#if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
185# include <endian.h>
186# if __BYTE_ORDER == __LITTLE_ENDIAN
187# define _LIBCPP_LITTLE_ENDIAN 1
188# define _LIBCPP_BIG_ENDIAN 0
189# elif __BYTE_ORDER == __BIG_ENDIAN
190# define _LIBCPP_LITTLE_ENDIAN 0
191# define _LIBCPP_BIG_ENDIAN 1
192# else // __BYTE_ORDER == __BIG_ENDIAN
193# error unable to determine endian
194# endif
195#endif // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
196
197#if __has_attribute(__no_sanitize__)
198#define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi")))
199#else
200#define _LIBCPP_NO_CFI
201#endif
202
203#ifdef _WIN32
204
205// only really useful for a DLL
206#ifdef _LIBCPP_DLL // this should be a compiler builtin define ideally...
207# ifdef cxx_EXPORTS
208# define _LIBCPP_HIDDEN
209# define _LIBCPP_FUNC_VIS __declspec(dllexport)
210# define _LIBCPP_TYPE_VIS __declspec(dllexport)
211# else
212# define _LIBCPP_HIDDEN
213# define _LIBCPP_FUNC_VIS __declspec(dllimport)
214# define _LIBCPP_TYPE_VIS __declspec(dllimport)
215# endif
216#else
217# define _LIBCPP_HIDDEN
218# define _LIBCPP_FUNC_VIS
219# define _LIBCPP_TYPE_VIS
220#endif
221
222#define _LIBCPP_TYPE_VIS_ONLY
223#define _LIBCPP_FUNC_VIS_ONLY
224
225#ifndef _LIBCPP_INLINE_VISIBILITY
226# ifdef _LIBCPP_MSVC
227# define _LIBCPP_INLINE_VISIBILITY __forceinline
228# else // MinGW GCC and Clang
229# define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__))
230# endif
231#endif
232
233#ifndef _LIBCPP_EXCEPTION_ABI
234#define _LIBCPP_EXCEPTION_ABI _LIBCPP_TYPE_VIS
235#endif
236
237#ifndef _LIBCPP_ALWAYS_INLINE
238# ifdef _LIBCPP_MSVC
239# define _LIBCPP_ALWAYS_INLINE __forceinline
240# endif
241#endif
242
243#endif // _WIN32
244
245#ifndef _LIBCPP_HIDDEN
246#define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden")))
247#endif
248
249#ifndef _LIBCPP_FUNC_VIS
250#define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default")))
251#endif
252
253#ifndef _LIBCPP_TYPE_VIS
254# if __has_attribute(__type_visibility__)
255# define _LIBCPP_TYPE_VIS __attribute__ ((__type_visibility__("default")))
256# else
257# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default")))
258# endif
259#endif
260
261#ifndef _LIBCPP_PREFERRED_OVERLOAD
262# if __has_attribute(__enable_if__)
263# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, "")))
264# endif
265#endif
266
267#ifndef _LIBCPP_TYPE_VIS_ONLY
268# define _LIBCPP_TYPE_VIS_ONLY _LIBCPP_TYPE_VIS
269#endif
270
271#ifndef _LIBCPP_FUNC_VIS_ONLY
272# define _LIBCPP_FUNC_VIS_ONLY _LIBCPP_FUNC_VIS
273#endif
274
275#ifndef _LIBCPP_INLINE_VISIBILITY
276#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__))
277#endif
278
279#ifndef _LIBCPP_EXCEPTION_ABI
280#define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default")))
281#endif
282
283#ifndef _LIBCPP_ALWAYS_INLINE
284#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__))
285#endif
286
287#if defined(__clang__)
288
289// _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for
290// _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility.
291#if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \
292 !defined(__arm__)) || \
293 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT)
294#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
295#endif
296
297#if __has_feature(cxx_alignas)
298# define _ALIGNAS_TYPE(x) alignas(x)
299# define _ALIGNAS(x) alignas(x)
300#else
301# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
302# define _ALIGNAS(x) __attribute__((__aligned__(x)))
303#endif
304
305#if !__has_feature(cxx_alias_templates)
306#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
307#endif
308
309#if __cplusplus < 201103L
310typedef __char16_t char16_t;
311typedef __char32_t char32_t;
312#endif
313
314#if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS)
315#define _LIBCPP_NO_EXCEPTIONS
316#endif
317
318#if !(__has_feature(cxx_rtti))
319#define _LIBCPP_NO_RTTI
320#endif
321
322#if !(__has_feature(cxx_strong_enums))
323#define _LIBCPP_HAS_NO_STRONG_ENUMS
324#endif
325
326#if !(__has_feature(cxx_decltype))
327#define _LIBCPP_HAS_NO_DECLTYPE
328#endif
329
330#if __has_feature(cxx_attributes)
331# define _LIBCPP_NORETURN [[noreturn]]
332#else
333# define _LIBCPP_NORETURN __attribute__ ((noreturn))
334#endif
335
336#if !(__has_feature(cxx_default_function_template_args))
337#define _LIBCPP_HAS_NO_DEFAULT_FUNCTION_TEMPLATE_ARGS
338#endif
339
340#if !(__has_feature(cxx_defaulted_functions))
341#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
342#endif // !(__has_feature(cxx_defaulted_functions))
343
344#if !(__has_feature(cxx_deleted_functions))
345#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
346#endif // !(__has_feature(cxx_deleted_functions))
347
348#if !(__has_feature(cxx_lambdas))
349#define _LIBCPP_HAS_NO_LAMBDAS
350#endif
351
352#if !(__has_feature(cxx_nullptr))
353#define _LIBCPP_HAS_NO_NULLPTR
354#endif
355
356#if !(__has_feature(cxx_rvalue_references))
357#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
358#endif
359
360#if !(__has_feature(cxx_static_assert))
361#define _LIBCPP_HAS_NO_STATIC_ASSERT
362#endif
363
364#if !(__has_feature(cxx_auto_type))
365#define _LIBCPP_HAS_NO_AUTO_TYPE
366#endif
367
368#if !(__has_feature(cxx_access_control_sfinae)) || !__has_feature(cxx_trailing_return)
369#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
370#endif
371
372#if !(__has_feature(cxx_variadic_templates))
373#define _LIBCPP_HAS_NO_VARIADICS
374#endif
375
376#if !(__has_feature(cxx_trailing_return))
377#define _LIBCPP_HAS_NO_TRAILING_RETURN
378#endif
379
380#if !(__has_feature(cxx_generalized_initializers))
381#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
382#endif
383
384#if __has_feature(is_base_of)
385# define _LIBCPP_HAS_IS_BASE_OF
386#endif
387
388#if __has_feature(is_final)
389# define _LIBCPP_HAS_IS_FINAL
390#endif
391
392// Objective-C++ features (opt-in)
393#if __has_feature(objc_arc)
394#define _LIBCPP_HAS_OBJC_ARC
395#endif
396
397#if __has_feature(objc_arc_weak)
398#define _LIBCPP_HAS_OBJC_ARC_WEAK
399#define _LIBCPP_HAS_NO_STRONG_ENUMS
400#endif
401
402#if !(__has_feature(cxx_constexpr))
403#define _LIBCPP_HAS_NO_CONSTEXPR
404#endif
405
406#if !(__has_feature(cxx_relaxed_constexpr))
407#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR
408#endif
409
410#if !(__has_feature(cxx_variable_templates))
411#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
412#endif
413
414#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
415#if defined(__FreeBSD__)
416#define _LIBCPP_HAS_QUICK_EXIT
417#define _LIBCPP_HAS_C11_FEATURES
418#elif defined(__ANDROID__)
419#define _LIBCPP_HAS_QUICK_EXIT
420#elif defined(__linux__)
421#if !defined(_LIBCPP_HAS_MUSL_LIBC)
422# include <features.h>
423#if __GLIBC_PREREQ(2, 15)
424#define _LIBCPP_HAS_QUICK_EXIT
425#endif
426#if __GLIBC_PREREQ(2, 17)
427#define _LIBCPP_HAS_C11_FEATURES
428#endif
429#else // defined(_LIBCPP_HAS_MUSL_LIBC)
430#define _LIBCPP_HAS_QUICK_EXIT
431#define _LIBCPP_HAS_C11_FEATURES
432#endif
433#endif // __linux__
434#endif
435
436#if !(__has_feature(cxx_noexcept))
437#define _LIBCPP_HAS_NO_NOEXCEPT
438#endif
439
440#if __has_feature(underlying_type)
441# define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T)
442#endif
443
444#if __has_feature(is_literal)
445# define _LIBCPP_IS_LITERAL(T) __is_literal(T)
446#endif
447
448// Inline namespaces are available in Clang regardless of C++ dialect.
449#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
450#define _LIBCPP_END_NAMESPACE_STD } }
451#define _VSTD std::_LIBCPP_NAMESPACE
452
453namespace std {
454 inline namespace _LIBCPP_NAMESPACE {
455 }
456}
457
458#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer)
459#define _LIBCPP_HAS_NO_ASAN
460#endif
461
462// Allow for build-time disabling of unsigned integer sanitization
463#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize)
464#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow")))
465#endif
466
467#elif defined(__GNUC__)
468
469#define _ALIGNAS(x) __attribute__((__aligned__(x)))
470#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
471
472#define _LIBCPP_NORETURN __attribute__((noreturn))
473
474#if _GNUC_VER >= 407
475#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T)
476#define _LIBCPP_IS_LITERAL(T) __is_literal_type(T)
477#define _LIBCPP_HAS_IS_FINAL
478#endif
479
480#if defined(__GNUC__) && _GNUC_VER >= 403
481# define _LIBCPP_HAS_IS_BASE_OF
482#endif
483
484#if !__EXCEPTIONS
485#define _LIBCPP_NO_EXCEPTIONS
486#endif
487
488// constexpr was added to GCC in 4.6.
489#if _GNUC_VER < 406
490#define _LIBCPP_HAS_NO_CONSTEXPR
491// Can only use constexpr in c++11 mode.
492#elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L
493#define _LIBCPP_HAS_NO_CONSTEXPR
494#endif
495
496// Determine if GCC supports relaxed constexpr
497#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L
498#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR
499#endif
500
501// GCC 5 will support variable templates
502#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L
503#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
504#endif
505
506#ifndef __GXX_EXPERIMENTAL_CXX0X__
507
508#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
509#define _LIBCPP_HAS_NO_DECLTYPE
510#define _LIBCPP_HAS_NO_DEFAULT_FUNCTION_TEMPLATE_ARGS
511#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
512#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
513#define _LIBCPP_HAS_NO_NULLPTR
514#define _LIBCPP_HAS_NO_STATIC_ASSERT
515#define _LIBCPP_HAS_NO_UNICODE_CHARS
516#define _LIBCPP_HAS_NO_VARIADICS
517#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
518#define _LIBCPP_HAS_NO_STRONG_ENUMS
519#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
520#define _LIBCPP_HAS_NO_NOEXCEPT
521
522#else // __GXX_EXPERIMENTAL_CXX0X__
523
524#if _GNUC_VER < 403
525#define _LIBCPP_HAS_NO_DEFAULT_FUNCTION_TEMPLATE_ARGS
526#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
527#define _LIBCPP_HAS_NO_STATIC_ASSERT
528#endif
529
530
531#if _GNUC_VER < 404
532#define _LIBCPP_HAS_NO_DECLTYPE
533#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
534#define _LIBCPP_HAS_NO_TRAILING_RETURN
535#define _LIBCPP_HAS_NO_UNICODE_CHARS
536#define _LIBCPP_HAS_NO_VARIADICS
537#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
538#endif // _GNUC_VER < 404
539
540#if _GNUC_VER < 406
541#define _LIBCPP_HAS_NO_NOEXCEPT
542#define _LIBCPP_HAS_NO_NULLPTR
543#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
544#endif
545
546#if _GNUC_VER < 407
547#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
548#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
549#endif
550
551#endif // __GXX_EXPERIMENTAL_CXX0X__
552
553#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { namespace _LIBCPP_NAMESPACE {
554#define _LIBCPP_END_NAMESPACE_STD } }
555#define _VSTD std::_LIBCPP_NAMESPACE
556
557namespace std {
558namespace _LIBCPP_NAMESPACE {
559}
560using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
561}
562
563#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__)
564#define _LIBCPP_HAS_NO_ASAN
565#endif
566
567#elif defined(_LIBCPP_MSVC)
568
569#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
570#define _LIBCPP_HAS_NO_CONSTEXPR
571#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR
572#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
573#define _LIBCPP_HAS_NO_UNICODE_CHARS
574#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
575#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
576#define _LIBCPP_HAS_NO_NOEXCEPT
577#define __alignof__ __alignof
578#define _LIBCPP_NORETURN __declspec(noreturn)
579#define _ALIGNAS(x) __declspec(align(x))
580#define _LIBCPP_HAS_NO_VARIADICS
581
582
583
584#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
585#define _LIBCPP_END_NAMESPACE_STD }
586#define _VSTD std
587
588# define _LIBCPP_WEAK
589namespace std {
590}
591
592#define _LIBCPP_HAS_NO_ASAN
593
594#elif defined(__IBMCPP__)
595
596#define _ALIGNAS(x) __attribute__((__aligned__(x)))
597#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
598#define _ATTRIBUTE(x) __attribute__((x))
599#define _LIBCPP_NORETURN __attribute__((noreturn))
600
601#define _LIBCPP_HAS_NO_DEFAULT_FUNCTION_TEMPLATE_ARGS
602#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
603#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
604#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
605#define _LIBCPP_HAS_NO_NOEXCEPT
606#define _LIBCPP_HAS_NO_NULLPTR
607#define _LIBCPP_HAS_NO_UNICODE_CHARS
608#define _LIBCPP_HAS_IS_BASE_OF
609#define _LIBCPP_HAS_IS_FINAL
610#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
611
612#if defined(_AIX)
613#define __MULTILOCALE_API
614#endif
615
616#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
617#define _LIBCPP_END_NAMESPACE_STD } }
618#define _VSTD std::_LIBCPP_NAMESPACE
619
620namespace std {
621 inline namespace _LIBCPP_NAMESPACE {
622 }
623}
624
625#define _LIBCPP_HAS_NO_ASAN
626
627#endif // __clang__ || __GNUC__ || _MSC_VER || __IBMCPP__
628
629#ifndef _LIBCPP_HAS_NO_NOEXCEPT
630# define _NOEXCEPT noexcept
631# define _NOEXCEPT_(x) noexcept(x)
632#else
633# define _NOEXCEPT throw()
634# define _NOEXCEPT_(x)
635#endif
636
637#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
638typedef unsigned short char16_t;
639typedef unsigned int char32_t;
640#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
641
642#ifndef __SIZEOF_INT128__
643#define _LIBCPP_HAS_NO_INT128
644#endif
645
646#ifdef _LIBCPP_HAS_NO_STATIC_ASSERT
647
648extern "C++" {
649template <bool> struct __static_assert_test;
650template <> struct __static_assert_test<true> {};
651template <unsigned> struct __static_assert_check {};
652}
653#define static_assert(__b, __m) \
654 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \
655 _LIBCPP_CONCAT(__t, __LINE__)
656
657#endif // _LIBCPP_HAS_NO_STATIC_ASSERT
658
659#ifdef _LIBCPP_HAS_NO_DECLTYPE
660// GCC 4.6 provides __decltype in all standard modes.
661#if !__is_identifier(__decltype) || _GNUC_VER >= 406
662# define decltype(__x) __decltype(__x)
663#else
664# define decltype(__x) __typeof__(__x)
665#endif
666#endif
667
668#ifdef _LIBCPP_HAS_NO_CONSTEXPR
669#define _LIBCPP_CONSTEXPR
670#else
671#define _LIBCPP_CONSTEXPR constexpr
672#endif
673
674#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
675#define _LIBCPP_DEFAULT {}
676#else
677#define _LIBCPP_DEFAULT = default;
678#endif
679
680#ifdef _LIBCPP_HAS_NO_DELETED_FUNCTIONS
681#define _LIBCPP_EQUAL_DELETE
682#else
683#define _LIBCPP_EQUAL_DELETE = delete
684#endif
685
686#ifdef __GNUC__
687#define _NOALIAS __attribute__((__malloc__))
688#else
689#define _NOALIAS
690#endif
691
692#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__)
693# define _LIBCPP_EXPLICIT explicit
694#else
695# define _LIBCPP_EXPLICIT
696#endif
697
698#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete)
699# define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
700#endif
701
702#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
703#define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx
704#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \
705 __lx __v_; \
706 _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \
707 _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \
708 _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \
709 };
710#else // _LIBCPP_HAS_NO_STRONG_ENUMS
711#define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_TYPE_VIS x
712#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x)
713#endif // _LIBCPP_HAS_NO_STRONG_ENUMS
714
715#ifdef _LIBCPP_DEBUG
716# if _LIBCPP_DEBUG == 0
717# define _LIBCPP_DEBUG_LEVEL 1
718# elif _LIBCPP_DEBUG == 1
719# define _LIBCPP_DEBUG_LEVEL 2
720# else
721# error Supported values for _LIBCPP_DEBUG are 0 and 1
722# endif
723# define _LIBCPP_EXTERN_TEMPLATE(...)
724#endif
725
726#ifndef _LIBCPP_EXTERN_TEMPLATE
727#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__;
728#endif
729
730#ifndef _LIBCPP_EXTERN_TEMPLATE2
731#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__;
732#endif
733
734#if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__)
735#define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63)
736#endif
737
738#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32) || \
739 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__)
740#define _LIBCPP_LOCALE__L_EXTENSIONS 1
741#endif
742
743#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
744// Most unix variants have catopen. These are the specific ones that don't.
745#if !defined(_WIN32) && !defined(__ANDROID__) && !defined(_NEWLIB_VERSION)
746#define _LIBCPP_HAS_CATOPEN 1
747#endif
748#endif
749
750#ifdef __FreeBSD__
751#define _DECLARE_C99_LDBL_MATH 1
752#endif
753
754#if defined(__APPLE__) || defined(__FreeBSD__)
755#define _LIBCPP_HAS_DEFAULTRUNELOCALE
756#endif
757
758#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__)
759#define _LIBCPP_WCTYPE_IS_MASK
760#endif
761
762#ifndef _LIBCPP_STD_VER
763# if __cplusplus <= 201103L
764# define _LIBCPP_STD_VER 11
765# elif __cplusplus <= 201402L
766# define _LIBCPP_STD_VER 14
767# else
768# define _LIBCPP_STD_VER 16 // current year, or date of c++17 ratification
769# endif
770#endif // _LIBCPP_STD_VER
771
772#if _LIBCPP_STD_VER > 11
773#define _LIBCPP_DEPRECATED [[deprecated]]
774#else
775#define _LIBCPP_DEPRECATED
776#endif
777
778#if _LIBCPP_STD_VER <= 11
779#define _LIBCPP_EXPLICIT_AFTER_CXX11
780#define _LIBCPP_DEPRECATED_AFTER_CXX11
781#else
782#define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit
783#define _LIBCPP_DEPRECATED_AFTER_CXX11 [[deprecated]]
784#endif
785
786#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)
787#define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr
788#else
789#define _LIBCPP_CONSTEXPR_AFTER_CXX11
790#endif
791
792#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)
793#define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr
794#else
795#define _LIBCPP_CONSTEXPR_AFTER_CXX14
796#endif
797
798#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES
799# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x)
800#else
801# define _LIBCPP_EXPLICIT_MOVE(x) (x)
802#endif
803
804#ifndef _LIBCPP_HAS_NO_ASAN
805extern "C" void __sanitizer_annotate_contiguous_container(
806 const void *, const void *, const void *, const void *);
807#endif
808
809// Try to find out if RTTI is disabled.
810// g++ and cl.exe have RTTI on by default and define a macro when it is.
811// g++ only defines the macro in 4.3.2 and onwards.
812#if !defined(_LIBCPP_NO_RTTI)
813# if defined(__GNUC__) && ((__GNUC__ >= 5) || (__GNUC__ == 4 && \
814 (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && !defined(__GXX_RTTI)
815# define _LIBCPP_NO_RTTI
816# elif (defined(_MSC_VER) && !defined(__clang__)) && !defined(_CPPRTTI)
817# define _LIBCPP_NO_RTTI
818# endif
819#endif
820
821#ifndef _LIBCPP_WEAK
822# define _LIBCPP_WEAK __attribute__((__weak__))
823#endif
824
825// Thread API
826#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
827# if defined(__FreeBSD__) || \
828 defined(__NetBSD__) || \
829 defined(__linux__) || \
830 defined(__APPLE__) || \
831 defined(__CloudABI__) || \
832 defined(__sun__)
833# define _LIBCPP_HAS_THREAD_API_PTHREAD
834# else
835# error "No thread API"
836# endif // _LIBCPP_HAS_THREAD_API
837#endif // _LIBCPP_HAS_NO_THREADS
838
839#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
840# error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \
841 _LIBCPP_HAS_NO_THREADS is not defined.
842#endif
843
844#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS)
845# error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \
846 _LIBCPP_HAS_NO_THREADS is defined.
847#endif
848
849// Systems that use capability-based security (FreeBSD with Capsicum,
850// Nuxi CloudABI) may only provide local filesystem access (using *at()).
851// Functions like open(), rename(), unlink() and stat() should not be
852// used, as they attempt to access the global filesystem namespace.
853#ifdef __CloudABI__
854#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
855#endif
856
857// CloudABI is intended for running networked services. Processes do not
858// have standard input and output channels.
859#ifdef __CloudABI__
860#define _LIBCPP_HAS_NO_STDIN
861#define _LIBCPP_HAS_NO_STDOUT
862#endif
863
864#if defined(__ANDROID__) || defined(__CloudABI__) || defined(_LIBCPP_HAS_MUSL_LIBC)
865#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE
866#endif
867
868// Thread-unsafe functions such as strtok(), mbtowc() and localtime()
869// are not available.
870#ifdef __CloudABI__
871#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
872#endif
873
874#if __has_feature(cxx_atomic) || __has_extension(c_atomic)
875#define _LIBCPP_HAS_C_ATOMIC_IMP
876#elif _GNUC_VER > 407
877#define _LIBCPP_HAS_GCC_ATOMIC_IMP
878#endif
879
880#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \
881 || defined(_LIBCPP_HAS_NO_THREADS)
882#define _LIBCPP_HAS_NO_ATOMIC_HEADER
883#endif
884
885#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
886#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
887#endif
888
889#if __cplusplus < 201103L
890#define _LIBCPP_CXX03_LANG
891#else
892#if defined(_LIBCPP_HAS_NO_VARIADIC_TEMPLATES) || defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
893#error Libc++ requires a feature complete C++11 compiler in C++11 or greater.
894#endif
895#endif
896
897#if (defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) && defined(__clang__) \
898 && __has_attribute(acquire_capability))
899#define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS
900#endif
901
902#endif // __cplusplus
903
904#endif // _LIBCPP_CONFIG
905