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Howard Hinnantbc8d3f92010-05-11 19:42:161// -*- C++ -*-
2//===--------------------------- __config ---------------------------------===//
3//
Howard Hinnantf5256e12010-05-11 21:36:014// The LLVM Compiler Infrastructure
Howard Hinnantbc8d3f92010-05-11 19:42:165//
Howard Hinnantb64f8b02010-11-16 22:09:026// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
Howard Hinnantbc8d3f92010-05-11 19:42:168//
9//===----------------------------------------------------------------------===//
10
11#ifndef _LIBCPP_CONFIG
12#define _LIBCPP_CONFIG
13
Eric Fiselier38e7a302015-11-06 06:30:1214#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
Howard Hinnantbc8d3f92010-05-11 19:42:1619#pragma GCC system_header
Howard Hinnant08e17472011-10-17 20:05:1020#endif
Howard Hinnantbc8d3f92010-05-11 19:42:1621
Eric Fiselier38e7a302015-11-06 06:30:1222#ifdef __cplusplus
23
Howard Hinnant75536ba2012-10-03 20:48:0524#ifdef __GNUC__
25#define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__)
Eric Fiseliereeeada12015-06-13 02:18:4426#else
27#define _GNUC_VER 0
Howard Hinnant75536ba2012-10-03 20:48:0528#endif
29
Hans Wennborgb27535c2016-01-13 17:33:2130#define _LIBCPP_VERSION 3900
Howard Hinnantbc8d3f92010-05-11 19:42:1631
Evgeniy Stepanov4f01aa82015-10-13 23:48:2832#ifndef _LIBCPP_ABI_VERSION
Howard Hinnantbc8d3f92010-05-11 19:42:1633#define _LIBCPP_ABI_VERSION 1
Evgeniy Stepanov4f01aa82015-10-13 23:48:2834#endif
35
36#if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2
Evgeniy Stepanov746572b2015-11-06 22:02:2937// Change short string represention so that string data starts at offset 0,
38// improving its alignment in some cases.
Evgeniy Stepanov4f01aa82015-10-13 23:48:2839#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
Evgeniy Stepanov746572b2015-11-06 22:02:2940// Fix deque iterator type in order to support incomplete types.
41#define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE
Eric Fiselier5c74b482015-12-30 20:57:5942// Fix undefined behavior in how std::list stores it's linked nodes.
43#define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB
Eric Fiselierde637db2016-01-27 00:11:5444#define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB
Eric Fiselier774c7c52016-02-10 20:46:2345#define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE
Eric Fiselier10b52a02016-06-14 03:48:0946#define _LIBCPP_ABI_VARIADIC_LOCK_GUARD
Evgeniy Stepanov4f01aa82015-10-13 23:48:2847#endif
Howard Hinnantbc8d3f92010-05-11 19:42:1648
49#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y
50#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y)
51
52#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION)
53
Eric Fiselier8f7fe5c2015-07-10 20:26:3854
55#ifndef __has_attribute
56#define __has_attribute(__x) 0
57#endif
58#ifndef __has_builtin
59#define __has_builtin(__x) 0
60#endif
Eric Fiselier00f4a492015-08-19 17:21:4661#ifndef __has_extension
62#define __has_extension(__x) 0
63#endif
Eric Fiselier8f7fe5c2015-07-10 20:26:3864#ifndef __has_feature
65#define __has_feature(__x) 0
66#endif
67// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by
68// the compiler and '1' otherwise.
69#ifndef __is_identifier
70#define __is_identifier(__x) 1
71#endif
72
73
Howard Hinnantbc8d3f92010-05-11 19:42:1674#ifdef __LITTLE_ENDIAN__
75#if __LITTLE_ENDIAN__
76#define _LIBCPP_LITTLE_ENDIAN 1
77#define _LIBCPP_BIG_ENDIAN 0
Howard Hinnant324bb032010-08-22 00:02:4378#endif // __LITTLE_ENDIAN__
79#endif // __LITTLE_ENDIAN__
Howard Hinnantbc8d3f92010-05-11 19:42:1680
81#ifdef __BIG_ENDIAN__
82#if __BIG_ENDIAN__
83#define _LIBCPP_LITTLE_ENDIAN 0
84#define _LIBCPP_BIG_ENDIAN 1
Howard Hinnant324bb032010-08-22 00:02:4385#endif // __BIG_ENDIAN__
86#endif // __BIG_ENDIAN__
Howard Hinnantbc8d3f92010-05-11 19:42:1687
Dan Albert2897e782015-09-16 18:10:4788#ifdef __BYTE_ORDER__
89#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
90#define _LIBCPP_LITTLE_ENDIAN 1
91#define _LIBCPP_BIG_ENDIAN 0
92#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
93#define _LIBCPP_LITTLE_ENDIAN 0
94#define _LIBCPP_BIG_ENDIAN 1
95#endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
96#endif // __BYTE_ORDER__
97
David Chisnall3e13d4f2010-08-11 16:27:2098#ifdef __FreeBSD__
99# include <sys/endian.h>
100# if _BYTE_ORDER == _LITTLE_ENDIAN
101# define _LIBCPP_LITTLE_ENDIAN 1
102# define _LIBCPP_BIG_ENDIAN 0
Howard Hinnant324bb032010-08-22 00:02:43103# else // _BYTE_ORDER == _LITTLE_ENDIAN
David Chisnall3e13d4f2010-08-11 16:27:20104# define _LIBCPP_LITTLE_ENDIAN 0
105# define _LIBCPP_BIG_ENDIAN 1
Howard Hinnant324bb032010-08-22 00:02:43106# endif // _BYTE_ORDER == _LITTLE_ENDIAN
Howard Hinnant8a9c5ea2012-11-26 21:18:17107# ifndef __LONG_LONG_SUPPORTED
108# define _LIBCPP_HAS_NO_LONG_LONG
109# endif // __LONG_LONG_SUPPORTED
Howard Hinnant324bb032010-08-22 00:02:43110#endif // __FreeBSD__
David Chisnall3e13d4f2010-08-11 16:27:20111
Joerg Sonnenbergera71a9522013-05-17 21:17:34112#ifdef __NetBSD__
113# include <sys/endian.h>
114# if _BYTE_ORDER == _LITTLE_ENDIAN
115# define _LIBCPP_LITTLE_ENDIAN 1
116# define _LIBCPP_BIG_ENDIAN 0
117# else // _BYTE_ORDER == _LITTLE_ENDIAN
118# define _LIBCPP_LITTLE_ENDIAN 0
119# define _LIBCPP_BIG_ENDIAN 1
120# endif // _BYTE_ORDER == _LITTLE_ENDIAN
121# define _LIBCPP_HAS_QUICK_EXIT
122#endif // __NetBSD__
123
Howard Hinnant11a58a62011-05-13 17:16:06124#ifdef _WIN32
125# define _LIBCPP_LITTLE_ENDIAN 1
126# define _LIBCPP_BIG_ENDIAN 0
Eric Fiselier3a0e4302015-06-13 07:08:02127// Compiler intrinsics (MSVC)
128#if defined(_MSC_VER) && _MSC_VER >= 1400
Howard Hinnante9df0a52013-08-01 18:17:34129# define _LIBCPP_HAS_IS_BASE_OF
Howard Hinnant92a07002011-09-22 19:10:18130# endif
Howard Hinnante9df0a52013-08-01 18:17:34131# if defined(_MSC_VER) && !defined(__clang__)
132# define _LIBCPP_MSVC // Using Microsoft Visual C++ compiler
Howard Hinnantf7555062013-10-04 21:14:44133# define _LIBCPP_TOSTRING2(x) #x
134# define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x)
135# define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x))
Howard Hinnante9df0a52013-08-01 18:17:34136# endif
Howard Hinnantef5aa932013-09-17 01:34:47137# // If mingw not explicitly detected, assume using MS C runtime only.
138# ifndef __MINGW32__
139# define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library
140# endif
Howard Hinnant11a58a62011-05-13 17:16:06141#endif // _WIN32
142
David Chisnall997e4542012-02-29 13:05:08143#ifdef __sun__
144# include <sys/isa_defs.h>
145# ifdef _LITTLE_ENDIAN
146# define _LIBCPP_LITTLE_ENDIAN 1
147# define _LIBCPP_BIG_ENDIAN 0
148# else
149# define _LIBCPP_LITTLE_ENDIAN 0
150# define _LIBCPP_BIG_ENDIAN 1
151# endif
152#endif // __sun__
153
Ed Schouten63e70b62015-03-10 07:46:06154#if defined(__CloudABI__)
155 // Certain architectures provide arc4random(). Prefer using
156 // arc4random() over /dev/{u,}random to make it possible to obtain
157 // random data even when using sandboxing mechanisms such as chroots,
158 // Capsicum, etc.
159# define _LIBCPP_USING_ARC4_RANDOM
160#elif defined(__native_client__)
JF Bastien2bd5ffd2014-12-01 19:19:55161 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access,
162 // including accesses to the special files under /dev. C++11's
163 // std::random_device is instead exposed through a NaCl syscall.
164# define _LIBCPP_USING_NACL_RANDOM
Ed Schouten63e70b62015-03-10 07:46:06165#elif defined(_WIN32)
166# define _LIBCPP_USING_WIN32_RANDOM
167#else
168# define _LIBCPP_USING_DEV_RANDOM
169#endif
JF Bastien2bd5ffd2014-12-01 19:19:55170
Howard Hinnantbc8d3f92010-05-11 19:42:16171#if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
Howard Hinnantadff4892010-05-24 17:49:41172# include <endian.h>
173# if __BYTE_ORDER == __LITTLE_ENDIAN
174# define _LIBCPP_LITTLE_ENDIAN 1
175# define _LIBCPP_BIG_ENDIAN 0
176# elif __BYTE_ORDER == __BIG_ENDIAN
177# define _LIBCPP_LITTLE_ENDIAN 0
178# define _LIBCPP_BIG_ENDIAN 1
Howard Hinnant324bb032010-08-22 00:02:43179# else // __BYTE_ORDER == __BIG_ENDIAN
Howard Hinnantadff4892010-05-24 17:49:41180# error unable to determine endian
181# endif
Howard Hinnant324bb032010-08-22 00:02:43182#endif // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
Howard Hinnantbc8d3f92010-05-11 19:42:16183
Evgeniy Stepanov45dca2c2016-02-10 21:53:28184#if __has_attribute(__no_sanitize__)
185#define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi")))
186#else
187#define _LIBCPP_NO_CFI
188#endif
189
Marshall Clowa22d2ad2013-03-18 17:04:29190#ifdef _WIN32
Howard Hinnant08e17472011-10-17 20:05:10191
192// only really useful for a DLL
193#ifdef _LIBCPP_DLL // this should be a compiler builtin define ideally...
194# ifdef cxx_EXPORTS
195# define _LIBCPP_HIDDEN
Howard Hinnant83eade62013-03-06 23:30:19196# define _LIBCPP_FUNC_VIS __declspec(dllexport)
197# define _LIBCPP_TYPE_VIS __declspec(dllexport)
Howard Hinnant08e17472011-10-17 20:05:10198# else
199# define _LIBCPP_HIDDEN
Howard Hinnant83eade62013-03-06 23:30:19200# define _LIBCPP_FUNC_VIS __declspec(dllimport)
201# define _LIBCPP_TYPE_VIS __declspec(dllimport)
Howard Hinnant08e17472011-10-17 20:05:10202# endif
203#else
204# define _LIBCPP_HIDDEN
Howard Hinnant83eade62013-03-06 23:30:19205# define _LIBCPP_FUNC_VIS
206# define _LIBCPP_TYPE_VIS
Howard Hinnantbc8d3f92010-05-11 19:42:16207#endif
208
Howard Hinnant0f678bd2013-08-12 18:38:34209#define _LIBCPP_TYPE_VIS_ONLY
210#define _LIBCPP_FUNC_VIS_ONLY
211
Howard Hinnant08e17472011-10-17 20:05:10212#ifndef _LIBCPP_INLINE_VISIBILITY
Howard Hinnante9df0a52013-08-01 18:17:34213# ifdef _LIBCPP_MSVC
Howard Hinnantf46fc932011-10-20 12:49:21214# define _LIBCPP_INLINE_VISIBILITY __forceinline
215# else // MinGW GCC and Clang
216# define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__))
217# endif
Howard Hinnant08e17472011-10-17 20:05:10218#endif
219
220#ifndef _LIBCPP_EXCEPTION_ABI
Howard Hinnant83eade62013-03-06 23:30:19221#define _LIBCPP_EXCEPTION_ABI _LIBCPP_TYPE_VIS
Howard Hinnant08e17472011-10-17 20:05:10222#endif
223
224#ifndef _LIBCPP_ALWAYS_INLINE
Howard Hinnante9df0a52013-08-01 18:17:34225# ifdef _LIBCPP_MSVC
Howard Hinnantf46fc932011-10-20 12:49:21226# define _LIBCPP_ALWAYS_INLINE __forceinline
Howard Hinnant08e17472011-10-17 20:05:10227# endif
228#endif
229
230#endif // _WIN32
231
232#ifndef _LIBCPP_HIDDEN
Howard Hinnantbc8d3f92010-05-11 19:42:16233#define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden")))
Howard Hinnant08e17472011-10-17 20:05:10234#endif
235
Howard Hinnant83eade62013-03-06 23:30:19236#ifndef _LIBCPP_FUNC_VIS
237#define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default")))
238#endif
239
240#ifndef _LIBCPP_TYPE_VIS
Howard Hinnant3f81e9e2013-11-13 00:39:22241# if __has_attribute(__type_visibility__)
Howard Hinnant707f3182013-03-07 19:25:03242# define _LIBCPP_TYPE_VIS __attribute__ ((__type_visibility__("default")))
243# else
244# define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default")))
245# endif
Howard Hinnant08e17472011-10-17 20:05:10246#endif
Howard Hinnantbc8d3f92010-05-11 19:42:16247
Richard Smithb4aa9712016-02-10 00:59:02248#ifndef _LIBCPP_PREFERRED_OVERLOAD
249# if __has_attribute(__enable_if__)
250# define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, "")))
251# endif
252#endif
253
Howard Hinnant0f678bd2013-08-12 18:38:34254#ifndef _LIBCPP_TYPE_VIS_ONLY
255# define _LIBCPP_TYPE_VIS_ONLY _LIBCPP_TYPE_VIS
256#endif
257
258#ifndef _LIBCPP_FUNC_VIS_ONLY
259# define _LIBCPP_FUNC_VIS_ONLY _LIBCPP_FUNC_VIS
260#endif
261
Howard Hinnantbc8d3f92010-05-11 19:42:16262#ifndef _LIBCPP_INLINE_VISIBILITY
263#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__))
264#endif
265
266#ifndef _LIBCPP_EXCEPTION_ABI
Howard Hinnant61510022013-12-04 21:03:23267#define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default")))
Howard Hinnantbc8d3f92010-05-11 19:42:16268#endif
269
Howard Hinnant08e17472011-10-17 20:05:10270#ifndef _LIBCPP_ALWAYS_INLINE
Howard Hinnant2d72b1e2010-12-17 14:46:43271#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__))
Howard Hinnant08e17472011-10-17 20:05:10272#endif
Howard Hinnantbc8d3f92010-05-11 19:42:16273
Howard Hinnant60a0a8e2010-08-10 20:48:29274#if defined(__clang__)
275
Evgeniy Stepanov4f01aa82015-10-13 23:48:28276// _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for
277// _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility.
278#if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \
279 !defined(__arm__)) || \
280 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT)
281#define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
Tim Northoverc0300632014-03-30 11:34:22282#endif
283
Howard Hinnant08e17472011-10-17 20:05:10284#if __has_feature(cxx_alignas)
Howard Hinnantcbdd0892012-05-31 19:31:14285# define _ALIGNAS_TYPE(x) alignas(x)
Howard Hinnant08e17472011-10-17 20:05:10286# define _ALIGNAS(x) alignas(x)
287#else
Howard Hinnant6467aeb2012-05-31 20:14:00288# define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
Howard Hinnant08e17472011-10-17 20:05:10289# define _ALIGNAS(x) __attribute__((__aligned__(x)))
290#endif
291
Howard Hinnant19ce6a42011-05-26 19:07:54292#if !__has_feature(cxx_alias_templates)
Howard Hinnant73d21a42010-09-04 23:28:19293#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
Howard Hinnant19ce6a42011-05-26 19:07:54294#endif
Howard Hinnant87eea6d2010-09-07 20:31:18295
Marshall Clow4ffb67e2014-02-22 15:13:48296#if __cplusplus < 201103L
Howard Hinnant3975ebd2010-09-16 23:27:26297typedef __char16_t char16_t;
298typedef __char32_t char32_t;
Howard Hinnant87eea6d2010-09-07 20:31:18299#endif
Howard Hinnant73d21a42010-09-04 23:28:19300
Weiming Zhao994fb962016-04-21 05:28:18301#if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS)
Howard Hinnant60a0a8e2010-08-10 20:48:29302#define _LIBCPP_NO_EXCEPTIONS
303#endif
304
Howard Hinnantd4444702010-08-11 17:04:31305#if !(__has_feature(cxx_rtti))
306#define _LIBCPP_NO_RTTI
307#endif
308
Howard Hinnantf6d875f2011-12-02 19:36:40309#if !(__has_feature(cxx_strong_enums))
310#define _LIBCPP_HAS_NO_STRONG_ENUMS
311#endif
312
Howard Hinnant73d21a42010-09-04 23:28:19313#if !(__has_feature(cxx_decltype))
314#define _LIBCPP_HAS_NO_DECLTYPE
315#endif
316
Howard Hinnant4b7a43d2011-05-26 17:07:32317#if __has_feature(cxx_attributes)
Richard Smith0405cc42012-07-26 02:04:22318# define _LIBCPP_NORETURN [[noreturn]]
Howard Hinnant4b7a43d2011-05-26 17:07:32319#else
Richard Smith0405cc42012-07-26 02:04:22320# define _LIBCPP_NORETURN __attribute__ ((noreturn))
Howard Hinnant73d21a42010-09-04 23:28:19321#endif
322
Eric Fiselier9bef1ff2015-12-23 08:20:26323#if !(__has_feature(cxx_default_function_template_args))
324#define _LIBCPP_HAS_NO_DEFAULT_FUNCTION_TEMPLATE_ARGS
325#endif
326
Howard Hinnant74f4da72013-05-02 20:18:43327#if !(__has_feature(cxx_defaulted_functions))
Howard Hinnant73d21a42010-09-04 23:28:19328#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
Howard Hinnant74f4da72013-05-02 20:18:43329#endif // !(__has_feature(cxx_defaulted_functions))
Howard Hinnanted760f42010-09-29 18:13:54330
331#if !(__has_feature(cxx_deleted_functions))
Howard Hinnant73d21a42010-09-04 23:28:19332#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
333#endif // !(__has_feature(cxx_deleted_functions))
334
335#if !(__has_feature(cxx_lambdas))
336#define _LIBCPP_HAS_NO_LAMBDAS
337#endif
338
339#if !(__has_feature(cxx_nullptr))
340#define _LIBCPP_HAS_NO_NULLPTR
341#endif
342
343#if !(__has_feature(cxx_rvalue_references))
344#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
345#endif
346
347#if !(__has_feature(cxx_static_assert))
348#define _LIBCPP_HAS_NO_STATIC_ASSERT
349#endif
350
351#if !(__has_feature(cxx_auto_type))
352#define _LIBCPP_HAS_NO_AUTO_TYPE
Howard Hinnant23369ee2011-07-29 21:35:53353#endif
354
Howard Hinnant87758162011-07-31 17:10:44355#if !(__has_feature(cxx_access_control_sfinae)) || !__has_feature(cxx_trailing_return)
Howard Hinnant5d37fb32011-05-11 20:19:40356#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
Howard Hinnant73d21a42010-09-04 23:28:19357#endif
358
359#if !(__has_feature(cxx_variadic_templates))
360#define _LIBCPP_HAS_NO_VARIADICS
361#endif
Howard Hinnant60a0a8e2010-08-10 20:48:29362
Howard Hinnant726a76f2010-11-16 21:10:23363#if !(__has_feature(cxx_trailing_return))
364#define _LIBCPP_HAS_NO_TRAILING_RETURN
365#endif
366
Howard Hinnante3e32912011-08-12 21:56:02367#if !(__has_feature(cxx_generalized_initializers))
368#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
369#endif
370
Howard Hinnant92a07002011-09-22 19:10:18371#if __has_feature(is_base_of)
Howard Hinnante9df0a52013-08-01 18:17:34372# define _LIBCPP_HAS_IS_BASE_OF
Howard Hinnant92a07002011-09-22 19:10:18373#endif
374
Eric Fiselier3a0e4302015-06-13 07:08:02375#if __has_feature(is_final)
376# define _LIBCPP_HAS_IS_FINAL
377#endif
378
Douglas Gregor35d2fcf2011-06-22 22:17:44379// Objective-C++ features (opt-in)
380#if __has_feature(objc_arc)
381#define _LIBCPP_HAS_OBJC_ARC
382#endif
383
384#if __has_feature(objc_arc_weak)
385#define _LIBCPP_HAS_OBJC_ARC_WEAK
Howard Hinnantf6d875f2011-12-02 19:36:40386#define _LIBCPP_HAS_NO_STRONG_ENUMS
Douglas Gregor35d2fcf2011-06-22 22:17:44387#endif
388
Howard Hinnant13870382010-09-06 19:10:31389#if !(__has_feature(cxx_constexpr))
390#define _LIBCPP_HAS_NO_CONSTEXPR
391#endif
392
Eric Fiselier8fcc2722014-07-17 05:16:18393#if !(__has_feature(cxx_relaxed_constexpr))
394#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR
395#endif
396
Marshall Clow4d23cc62015-03-17 15:30:22397#if !(__has_feature(cxx_variable_templates))
398#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
399#endif
400
David Blaikiee27e9072013-05-13 21:53:44401#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
402#if defined(__FreeBSD__)
David Chisnallf2533a82012-03-14 14:10:37403#define _LIBCPP_HAS_QUICK_EXIT
Howard Hinnant999fc972012-10-13 18:03:53404#define _LIBCPP_HAS_C11_FEATURES
Marshall Clowa6439262014-07-10 15:20:28405#elif defined(__ANDROID__)
406#define _LIBCPP_HAS_QUICK_EXIT
David Blaikiee27e9072013-05-13 21:53:44407#elif defined(__linux__)
Vasileios Kalintiris579b42b2015-11-09 10:21:04408#if !defined(_LIBCPP_HAS_MUSL_LIBC)
409# include <features.h>
David Blaikiee27e9072013-05-13 21:53:44410#if __GLIBC_PREREQ(2, 15)
411#define _LIBCPP_HAS_QUICK_EXIT
412#endif
413#if __GLIBC_PREREQ(2, 17)
414#define _LIBCPP_HAS_C11_FEATURES
415#endif
Vasileios Kalintiris579b42b2015-11-09 10:21:04416#else // defined(_LIBCPP_HAS_MUSL_LIBC)
417#define _LIBCPP_HAS_QUICK_EXIT
418#define _LIBCPP_HAS_C11_FEATURES
David Blaikiee27e9072013-05-13 21:53:44419#endif
Vasileios Kalintiris579b42b2015-11-09 10:21:04420#endif // __linux__
David Chisnallf2533a82012-03-14 14:10:37421#endif
422
Eric Fiseliera3d6b122015-12-15 22:16:47423#if !(__has_feature(cxx_noexcept))
424#define _LIBCPP_HAS_NO_NOEXCEPT
Howard Hinnant5d37fb32011-05-11 20:19:40425#endif
426
Sean Hunt737a3512011-07-18 18:37:21427#if __has_feature(underlying_type)
Marshall Clow81aa3a72014-06-26 01:07:56428# define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T)
429#endif
430
431#if __has_feature(is_literal)
432# define _LIBCPP_IS_LITERAL(T) __is_literal(T)
Sean Hunt737a3512011-07-18 18:37:21433#endif
434
Howard Hinnant08e17472011-10-17 20:05:10435// Inline namespaces are available in Clang regardless of C++ dialect.
436#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
437#define _LIBCPP_END_NAMESPACE_STD } }
438#define _VSTD std::_LIBCPP_NAMESPACE
439
440namespace std {
441 inline namespace _LIBCPP_NAMESPACE {
442 }
443}
Howard Hinnant60a0a8e2010-08-10 20:48:29444
Marshall Clow7d4d5192014-04-14 15:44:57445#if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer)
446#define _LIBCPP_HAS_NO_ASAN
447#endif
448
Marshall Clow040a0342016-01-12 00:38:04449// Allow for build-time disabling of unsigned integer sanitization
Jonathan Roelofs90a7bf92016-01-13 23:27:08450#if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize)
Saleem Abdulrasoolf3adaaf2016-02-09 04:05:37451#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow")))
Marshall Clow040a0342016-01-12 00:38:04452#endif
453
Howard Hinnant60a0a8e2010-08-10 20:48:29454#elif defined(__GNUC__)
455
Howard Hinnant08e17472011-10-17 20:05:10456#define _ALIGNAS(x) __attribute__((__aligned__(x)))
Howard Hinnantffab0582012-08-19 17:14:47457#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
Howard Hinnant08e17472011-10-17 20:05:10458
Richard Smith0405cc42012-07-26 02:04:22459#define _LIBCPP_NORETURN __attribute__((noreturn))
Howard Hinnantc26fd802011-05-31 13:13:49460
Marshall Clow81aa3a72014-06-26 01:07:56461#if _GNUC_VER >= 407
462#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T)
463#define _LIBCPP_IS_LITERAL(T) __is_literal_type(T)
Eric Fiselier3a0e4302015-06-13 07:08:02464#define _LIBCPP_HAS_IS_FINAL
465#endif
466
467#if defined(__GNUC__) && _GNUC_VER >= 403
468# define _LIBCPP_HAS_IS_BASE_OF
Marshall Clow81aa3a72014-06-26 01:07:56469#endif
470
Howard Hinnant60a0a8e2010-08-10 20:48:29471#if !__EXCEPTIONS
472#define _LIBCPP_NO_EXCEPTIONS
473#endif
474
Nico Weber0211e862014-06-04 15:46:56475// constexpr was added to GCC in 4.6.
476#if _GNUC_VER < 406
Howard Hinnant13870382010-09-06 19:10:31477#define _LIBCPP_HAS_NO_CONSTEXPR
Nico Weber0211e862014-06-04 15:46:56478// Can only use constexpr in c++11 mode.
479#elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L
480#define _LIBCPP_HAS_NO_CONSTEXPR
481#endif
Howard Hinnant60a0a8e2010-08-10 20:48:29482
Marshall Clowac042ab2015-10-20 07:37:11483// Determine if GCC supports relaxed constexpr
484#if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L
Eric Fiselier8fcc2722014-07-17 05:16:18485#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR
Marshall Clowac042ab2015-10-20 07:37:11486#endif
487
Marshall Clow4d23cc62015-03-17 15:30:22488// GCC 5 will support variable templates
Eric Fiseliere39f4b92015-12-15 00:32:21489#if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L
Marshall Clow4d23cc62015-03-17 15:30:22490#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
Eric Fiseliere39f4b92015-12-15 00:32:21491#endif
Eric Fiselier8fcc2722014-07-17 05:16:18492
Howard Hinnant60a0a8e2010-08-10 20:48:29493#ifndef __GXX_EXPERIMENTAL_CXX0X__
494
495#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
496#define _LIBCPP_HAS_NO_DECLTYPE
Eric Fiselier9bef1ff2015-12-23 08:20:26497#define _LIBCPP_HAS_NO_DEFAULT_FUNCTION_TEMPLATE_ARGS
Howard Hinnant60a0a8e2010-08-10 20:48:29498#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
499#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
500#define _LIBCPP_HAS_NO_NULLPTR
501#define _LIBCPP_HAS_NO_STATIC_ASSERT
502#define _LIBCPP_HAS_NO_UNICODE_CHARS
503#define _LIBCPP_HAS_NO_VARIADICS
Howard Hinnant73d21a42010-09-04 23:28:19504#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
Logan Chienbfd68bf2013-12-14 06:44:09505#define _LIBCPP_HAS_NO_STRONG_ENUMS
Eric Fiselier2960ae22016-02-11 11:59:44506#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
Eric Fiseliera3d6b122015-12-15 22:16:47507#define _LIBCPP_HAS_NO_NOEXCEPT
Howard Hinnant60a0a8e2010-08-10 20:48:29508
Howard Hinnant324bb032010-08-22 00:02:43509#else // __GXX_EXPERIMENTAL_CXX0X__
Howard Hinnant60a0a8e2010-08-10 20:48:29510
Howard Hinnant75536ba2012-10-03 20:48:05511#if _GNUC_VER < 403
Eric Fiselier9bef1ff2015-12-23 08:20:26512#define _LIBCPP_HAS_NO_DEFAULT_FUNCTION_TEMPLATE_ARGS
Howard Hinnant73d21a42010-09-04 23:28:19513#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
Howard Hinnantbc8d3f92010-05-11 19:42:16514#define _LIBCPP_HAS_NO_STATIC_ASSERT
515#endif
516
Eric Fiselier9bef1ff2015-12-23 08:20:26517
Howard Hinnant75536ba2012-10-03 20:48:05518#if _GNUC_VER < 404
Howard Hinnant60a0a8e2010-08-10 20:48:29519#define _LIBCPP_HAS_NO_DECLTYPE
Howard Hinnant60a0a8e2010-08-10 20:48:29520#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
Eric Fiseliere39f4b92015-12-15 00:32:21521#define _LIBCPP_HAS_NO_TRAILING_RETURN
Howard Hinnant60a0a8e2010-08-10 20:48:29522#define _LIBCPP_HAS_NO_UNICODE_CHARS
523#define _LIBCPP_HAS_NO_VARIADICS
Howard Hinnante3e32912011-08-12 21:56:02524#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
Howard Hinnant75536ba2012-10-03 20:48:05525#endif // _GNUC_VER < 404
Howard Hinnantbc8d3f92010-05-11 19:42:16526
Howard Hinnant75536ba2012-10-03 20:48:05527#if _GNUC_VER < 406
Eric Fiseliera3d6b122015-12-15 22:16:47528#define _LIBCPP_HAS_NO_NOEXCEPT
Howard Hinnant60a0a8e2010-08-10 20:48:29529#define _LIBCPP_HAS_NO_NULLPTR
Eric Fiselier2960ae22016-02-11 11:59:44530#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
Howard Hinnantbc8d3f92010-05-11 19:42:16531#endif
532
Yaron Keren37d02122013-11-22 09:22:12533#if _GNUC_VER < 407
534#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
535#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
536#endif
537
Howard Hinnant324bb032010-08-22 00:02:43538#endif // __GXX_EXPERIMENTAL_CXX0X__
Howard Hinnant60a0a8e2010-08-10 20:48:29539
Howard Hinnantbc8d3f92010-05-11 19:42:16540#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { namespace _LIBCPP_NAMESPACE {
541#define _LIBCPP_END_NAMESPACE_STD } }
Howard Hinnant0949eed2011-06-30 21:18:19542#define _VSTD std::_LIBCPP_NAMESPACE
Howard Hinnantbc8d3f92010-05-11 19:42:16543
544namespace std {
545namespace _LIBCPP_NAMESPACE {
546}
547using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
548}
549
Marshall Clow7d4d5192014-04-14 15:44:57550#if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__)
551#define _LIBCPP_HAS_NO_ASAN
552#endif
553
Howard Hinnante9df0a52013-08-01 18:17:34554#elif defined(_LIBCPP_MSVC)
Howard Hinnant08e17472011-10-17 20:05:10555
Howard Hinnant78b68282011-10-22 20:59:45556#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
Howard Hinnant08e17472011-10-17 20:05:10557#define _LIBCPP_HAS_NO_CONSTEXPR
Eric Fiselier8fcc2722014-07-17 05:16:18558#define _LIBCPP_HAS_NO_CXX14_CONSTEXPR
Marshall Clow4d23cc62015-03-17 15:30:22559#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
Howard Hinnant08e17472011-10-17 20:05:10560#define _LIBCPP_HAS_NO_UNICODE_CHARS
561#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
Howard Hinnantfc3f80b2013-08-24 21:31:37562#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
Eric Fiseliera3d6b122015-12-15 22:16:47563#define _LIBCPP_HAS_NO_NOEXCEPT
Howard Hinnant08e17472011-10-17 20:05:10564#define __alignof__ __alignof
Richard Smith0405cc42012-07-26 02:04:22565#define _LIBCPP_NORETURN __declspec(noreturn)
Howard Hinnant08e17472011-10-17 20:05:10566#define _ALIGNAS(x) __declspec(align(x))
567#define _LIBCPP_HAS_NO_VARIADICS
568
Eric Fiseliera3d6b122015-12-15 22:16:47569
Howard Hinnant08e17472011-10-17 20:05:10570
571#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
572#define _LIBCPP_END_NAMESPACE_STD }
573#define _VSTD std
574
Howard Hinnant5a8b5782013-10-04 23:56:37575# define _LIBCPP_WEAK
Howard Hinnant08e17472011-10-17 20:05:10576namespace std {
577}
578
Marshall Clow7d4d5192014-04-14 15:44:57579#define _LIBCPP_HAS_NO_ASAN
580
Howard Hinnant7f764502013-08-14 18:00:20581#elif defined(__IBMCPP__)
582
583#define _ALIGNAS(x) __attribute__((__aligned__(x)))
584#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
585#define _ATTRIBUTE(x) __attribute__((x))
586#define _LIBCPP_NORETURN __attribute__((noreturn))
587
Eric Fiselier9bef1ff2015-12-23 08:20:26588#define _LIBCPP_HAS_NO_DEFAULT_FUNCTION_TEMPLATE_ARGS
Howard Hinnant7f764502013-08-14 18:00:20589#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
590#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
Howard Hinnant7f764502013-08-14 18:00:20591#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
Eric Fiseliera3d6b122015-12-15 22:16:47592#define _LIBCPP_HAS_NO_NOEXCEPT
Howard Hinnant7f764502013-08-14 18:00:20593#define _LIBCPP_HAS_NO_NULLPTR
594#define _LIBCPP_HAS_NO_UNICODE_CHARS
Howard Hinnant7f764502013-08-14 18:00:20595#define _LIBCPP_HAS_IS_BASE_OF
Eric Fiselier3a0e4302015-06-13 07:08:02596#define _LIBCPP_HAS_IS_FINAL
Marshall Clow4d23cc62015-03-17 15:30:22597#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
Howard Hinnant7f764502013-08-14 18:00:20598
599#if defined(_AIX)
600#define __MULTILOCALE_API
601#endif
602
603#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
604#define _LIBCPP_END_NAMESPACE_STD } }
605#define _VSTD std::_LIBCPP_NAMESPACE
606
607namespace std {
608 inline namespace _LIBCPP_NAMESPACE {
609 }
610}
611
Marshall Clow7d4d5192014-04-14 15:44:57612#define _LIBCPP_HAS_NO_ASAN
613
Marshall Clowaf6cd292014-01-06 15:23:02614#endif // __clang__ || __GNUC__ || _MSC_VER || __IBMCPP__
Howard Hinnantbc8d3f92010-05-11 19:42:16615
Eric Fiseliera3d6b122015-12-15 22:16:47616#ifndef _LIBCPP_HAS_NO_NOEXCEPT
617# define _NOEXCEPT noexcept
618# define _NOEXCEPT_(x) noexcept(x)
619#else
620# define _NOEXCEPT throw()
621# define _NOEXCEPT_(x)
622#endif
623
Howard Hinnantbc8d3f92010-05-11 19:42:16624#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
Howard Hinnant60a0a8e2010-08-10 20:48:29625typedef unsigned short char16_t;
626typedef unsigned int char32_t;
Howard Hinnant324bb032010-08-22 00:02:43627#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
Howard Hinnantbc8d3f92010-05-11 19:42:16628
Stephan Tolksdorf8a71d232014-03-26 19:45:52629#ifndef __SIZEOF_INT128__
630#define _LIBCPP_HAS_NO_INT128
631#endif
632
Howard Hinnantbc8d3f92010-05-11 19:42:16633#ifdef _LIBCPP_HAS_NO_STATIC_ASSERT
634
Richard Smithb3b00812015-10-13 23:12:22635extern "C++" {
Howard Hinnantbc8d3f92010-05-11 19:42:16636template <bool> struct __static_assert_test;
637template <> struct __static_assert_test<true> {};
638template <unsigned> struct __static_assert_check {};
Richard Smithb3b00812015-10-13 23:12:22639}
Howard Hinnantbc8d3f92010-05-11 19:42:16640#define static_assert(__b, __m) \
641 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \
642 _LIBCPP_CONCAT(__t, __LINE__)
643
Howard Hinnant324bb032010-08-22 00:02:43644#endif // _LIBCPP_HAS_NO_STATIC_ASSERT
Howard Hinnantbc8d3f92010-05-11 19:42:16645
646#ifdef _LIBCPP_HAS_NO_DECLTYPE
Eric Fiselier8f7fe5c2015-07-10 20:26:38647// GCC 4.6 provides __decltype in all standard modes.
648#if !__is_identifier(__decltype) || _GNUC_VER >= 406
Eric Fiselier6d7a2cb2015-06-13 06:27:17649# define decltype(__x) __decltype(__x)
650#else
651# define decltype(__x) __typeof__(__x)
652#endif
Howard Hinnantbc8d3f92010-05-11 19:42:16653#endif
654
Howard Hinnant13870382010-09-06 19:10:31655#ifdef _LIBCPP_HAS_NO_CONSTEXPR
Howard Hinnant27b4fd32012-04-02 00:40:41656#define _LIBCPP_CONSTEXPR
657#else
658#define _LIBCPP_CONSTEXPR constexpr
Howard Hinnant13870382010-09-06 19:10:31659#endif
660
Howard Hinnant74f4da72013-05-02 20:18:43661#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
662#define _LIBCPP_DEFAULT {}
663#else
664#define _LIBCPP_DEFAULT = default;
665#endif
666
Eric Fiselierdb215062016-03-31 02:15:15667#ifdef _LIBCPP_HAS_NO_DELETED_FUNCTIONS
668#define _LIBCPP_EQUAL_DELETE
669#else
670#define _LIBCPP_EQUAL_DELETE = delete
671#endif
672
Nuno Lopes518d1502012-06-28 16:47:34673#ifdef __GNUC__
Joerg Sonnenberger155f0602013-04-29 19:52:08674#define _NOALIAS __attribute__((__malloc__))
Nuno Lopes518d1502012-06-28 16:47:34675#else
676#define _NOALIAS
677#endif
678
Marshall Clow016d4e82013-11-19 19:16:03679#if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__)
Howard Hinnant77861882012-02-21 21:46:43680# define _LIBCPP_EXPLICIT explicit
681#else
682# define _LIBCPP_EXPLICIT
683#endif
684
Richard Smith73c1fce2014-06-04 19:54:15685#if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete)
686# define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
687#endif
688
Howard Hinnantf6d875f2011-12-02 19:36:40689#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
Howard Hinnant83eade62013-03-06 23:30:19690#define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx
Howard Hinnantf6d875f2011-12-02 19:36:40691#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \
Howard Hinnant9c0df142012-10-30 19:06:59692 __lx __v_; \
693 _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \
694 _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \
Howard Hinnantf6d875f2011-12-02 19:36:40695 _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \
696 };
697#else // _LIBCPP_HAS_NO_STRONG_ENUMS
Howard Hinnant83eade62013-03-06 23:30:19698#define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_TYPE_VIS x
Howard Hinnantf6d875f2011-12-02 19:36:40699#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x)
700#endif // _LIBCPP_HAS_NO_STRONG_ENUMS
701
Howard Hinnant5e571422013-08-23 20:10:18702#ifdef _LIBCPP_DEBUG
703# if _LIBCPP_DEBUG == 0
Howard Hinnant499cea12013-08-23 17:37:05704# define _LIBCPP_DEBUG_LEVEL 1
Howard Hinnant5e571422013-08-23 20:10:18705# elif _LIBCPP_DEBUG == 1
Howard Hinnant499cea12013-08-23 17:37:05706# define _LIBCPP_DEBUG_LEVEL 2
707# else
Howard Hinnant5e571422013-08-23 20:10:18708# error Supported values for _LIBCPP_DEBUG are 0 and 1
Howard Hinnant499cea12013-08-23 17:37:05709# endif
710# define _LIBCPP_EXTERN_TEMPLATE(...)
711#endif
712
Howard Hinnantff926772012-11-06 21:08:48713#ifndef _LIBCPP_EXTERN_TEMPLATE
Justin Bogner98c4e402014-08-15 17:58:56714#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__;
Howard Hinnantff926772012-11-06 21:08:48715#endif
716
Howard Hinnant499cea12013-08-23 17:37:05717#ifndef _LIBCPP_EXTERN_TEMPLATE2
718#define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__;
719#endif
720
Tim Northover81339cf2014-03-30 14:59:12721#if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__)
Tim Northover6fdde872014-03-30 11:34:26722#define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63)
723#endif
724
Ed Schouten4c42c4e2015-03-10 09:26:38725#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32) || \
726 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__)
Sean Huntf3907e62011-07-15 05:40:33727#define _LIBCPP_LOCALE__L_EXTENSIONS 1
728#endif
Yaron Kerenf1ebe262013-12-20 13:19:45729
Ben Craigf8865b62016-02-10 13:47:25730#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
731// Most unix variants have catopen. These are the specific ones that don't.
732#if !defined(_WIN32) && !defined(__ANDROID__) && !defined(_NEWLIB_VERSION)
Ed Schouten0251f0f2015-03-11 16:39:36733#define _LIBCPP_HAS_CATOPEN 1
734#endif
Ben Craigf8865b62016-02-10 13:47:25735#endif
Ed Schouten0251f0f2015-03-11 16:39:36736
Marshall Clow53e27632013-03-18 19:34:07737#ifdef __FreeBSD__
David Chisnall91a82722011-11-13 17:15:33738#define _DECLARE_C99_LDBL_MATH 1
739#endif
Sean Huntf3907e62011-07-15 05:40:33740
Marshall Clow53e27632013-03-18 19:34:07741#if defined(__APPLE__) || defined(__FreeBSD__)
Howard Hinnant866569b2011-09-28 23:39:33742#define _LIBCPP_HAS_DEFAULTRUNELOCALE
Sean Hunte59f7242011-07-09 01:09:31743#endif
744
Marshall Clow53e27632013-03-18 19:34:07745#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__)
Sean Hunt6f0342c2011-07-09 03:40:04746#define _LIBCPP_WCTYPE_IS_MASK
747#endif
748
Eric Fiselierd9e18192016-06-14 14:34:19749#ifndef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR
750# define _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 1
Howard Hinnant65173fe2013-11-14 22:52:25751#endif
752
Howard Hinnant5f1286f2013-05-07 20:16:13753#ifndef _LIBCPP_STD_VER
754# if __cplusplus <= 201103L
755# define _LIBCPP_STD_VER 11
Marshall Clow20f09552014-06-06 22:31:09756# elif __cplusplus <= 201402L
757# define _LIBCPP_STD_VER 14
Howard Hinnant5f1286f2013-05-07 20:16:13758# else
Marshall Clow20f09552014-06-06 22:31:09759# define _LIBCPP_STD_VER 15 // current year, or date of c++17 ratification
Howard Hinnant5f1286f2013-05-07 20:16:13760# endif
761#endif // _LIBCPP_STD_VER
762
Marshall Clow6db12cb2013-09-28 18:35:31763#if _LIBCPP_STD_VER > 11
764#define _LIBCPP_DEPRECATED [[deprecated]]
765#else
766#define _LIBCPP_DEPRECATED
767#endif
768
Marshall Clowac93d0e2013-07-15 14:57:19769#if _LIBCPP_STD_VER <= 11
Marshall Clow83179a72013-08-27 20:18:59770#define _LIBCPP_EXPLICIT_AFTER_CXX11
Marshall Clow6db12cb2013-09-28 18:35:31771#define _LIBCPP_DEPRECATED_AFTER_CXX11
Marshall Clowac93d0e2013-07-15 14:57:19772#else
Marshall Clow83179a72013-08-27 20:18:59773#define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit
Marshall Clow6db12cb2013-09-28 18:35:31774#define _LIBCPP_DEPRECATED_AFTER_CXX11 [[deprecated]]
Marshall Clowac93d0e2013-07-15 14:57:19775#endif
776
Eric Fiselier8fcc2722014-07-17 05:16:18777#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)
778#define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr
779#else
780#define _LIBCPP_CONSTEXPR_AFTER_CXX11
781#endif
782
Eric Fiselier735026e2016-03-17 03:30:56783#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)
784#define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr
785#else
786#define _LIBCPP_CONSTEXPR_AFTER_CXX14
787#endif
788
Dimitry Andric89663502015-08-19 06:43:33789#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES
790# define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x)
791#else
792# define _LIBCPP_EXPLICIT_MOVE(x) (x)
793#endif
794
Marshall Clow1f50f2d2014-05-08 14:14:06795#ifndef _LIBCPP_HAS_NO_ASAN
796extern "C" void __sanitizer_annotate_contiguous_container(
797 const void *, const void *, const void *, const void *);
798#endif
799
Howard Hinnantf677bc42013-10-04 21:24:21800// Try to find out if RTTI is disabled.
801// g++ and cl.exe have RTTI on by default and define a macro when it is.
802// g++ only defines the macro in 4.3.2 and onwards.
803#if !defined(_LIBCPP_NO_RTTI)
Marshall Clow6a85e8a2015-09-22 21:58:30804# if defined(__GNUC__) && ((__GNUC__ >= 5) || (__GNUC__ == 4 && \
Alexey Volkov5907f032014-09-03 14:30:39805 (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && !defined(__GXX_RTTI)
Howard Hinnantf677bc42013-10-04 21:24:21806# define _LIBCPP_NO_RTTI
807# elif (defined(_MSC_VER) && !defined(__clang__)) && !defined(_CPPRTTI)
808# define _LIBCPP_NO_RTTI
809# endif
810#endif
811
Howard Hinnant5a8b5782013-10-04 23:56:37812#ifndef _LIBCPP_WEAK
813# define _LIBCPP_WEAK __attribute__((__weak__))
814#endif
815
Asiri Rathnayake35ff03b2016-05-06 14:06:29816// Thread API
Ben Craig5163e462016-05-25 17:40:09817#if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
Asiri Rathnayake35ff03b2016-05-06 14:06:29818# if defined(__FreeBSD__) || \
819 defined(__NetBSD__) || \
820 defined(__linux__) || \
821 defined(__APPLE__) || \
Eric Fiselier8c8f0e52016-05-07 17:05:46822 defined(__CloudABI__) || \
823 defined(__sun__)
Ben Craig5163e462016-05-25 17:40:09824# define _LIBCPP_HAS_THREAD_API_PTHREAD
Asiri Rathnayake35ff03b2016-05-06 14:06:29825# else
826# error "No thread API"
Ben Craig5163e462016-05-25 17:40:09827# endif // _LIBCPP_HAS_THREAD_API
Asiri Rathnayake35ff03b2016-05-06 14:06:29828#endif // _LIBCPP_HAS_NO_THREADS
829
Ben Craig5163e462016-05-25 17:40:09830#if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
831# error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \
832 _LIBCPP_HAS_NO_THREADS is not defined.
833#endif
Asiri Rathnayake35ff03b2016-05-06 14:06:29834
Eric Fiseliera245f9b2014-12-06 20:09:11835#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS)
836# error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \
837 _LIBCPP_HAS_NO_THREADS is defined.
838#endif
839
Ed Schoutenb33ae5b2015-03-12 15:44:39840// Systems that use capability-based security (FreeBSD with Capsicum,
841// Nuxi CloudABI) may only provide local filesystem access (using *at()).
842// Functions like open(), rename(), unlink() and stat() should not be
843// used, as they attempt to access the global filesystem namespace.
844#ifdef __CloudABI__
845#define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
846#endif
847
Ed Schoutenabd06b42015-03-26 14:35:46848// CloudABI is intended for running networked services. Processes do not
849// have standard input and output channels.
850#ifdef __CloudABI__
851#define _LIBCPP_HAS_NO_STDIN
852#define _LIBCPP_HAS_NO_STDOUT
853#endif
854
Vasileios Kalintiris5e00a712015-11-24 10:24:54855#if defined(__ANDROID__) || defined(__CloudABI__) || defined(_LIBCPP_HAS_MUSL_LIBC)
Dan Albert6272ae52015-03-11 00:51:06856#define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE
857#endif
858
Ed Schouten323ade32015-06-24 08:44:38859// Thread-unsafe functions such as strtok(), mbtowc() and localtime()
860// are not available.
861#ifdef __CloudABI__
862#define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
863#endif
864
Eric Fiselier0b4ab6f2015-09-22 03:15:35865#if __has_feature(cxx_atomic) || __has_extension(c_atomic)
Eric Fiselier00f4a492015-08-19 17:21:46866#define _LIBCPP_HAS_C_ATOMIC_IMP
867#elif _GNUC_VER > 407
868#define _LIBCPP_HAS_GCC_ATOMIC_IMP
869#endif
870
871#if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \
872 || defined(_LIBCPP_HAS_NO_THREADS)
873#define _LIBCPP_HAS_NO_ATOMIC_HEADER
874#endif
875
Marshall Clow7a3731f2016-01-11 19:27:10876#ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
877#define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
Eric Fiselier2960ae22016-02-11 11:59:44878#endif
879
880#if __cplusplus < 201103L
881#define _LIBCPP_CXX03_LANG
882#else
Eric Fiselierd9e18192016-06-14 14:34:19883#if defined(_LIBCPP_HAS_NO_VARIADIC_TEMPLATES) || defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
Eric Fiselier2960ae22016-02-11 11:59:44884#error Libc++ requires a feature complete C++11 compiler in C++11 or greater.
885#endif
886#endif
Marshall Clow7a3731f2016-01-11 19:27:10887
Eric Fiseliera15e8c32016-03-16 02:30:06888#if (defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) && defined(__clang__) \
889 && __has_attribute(acquire_capability))
890#define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS
891#endif
892
Eric Fiselier38e7a302015-11-06 06:30:12893#endif // __cplusplus
894
Eric Fiselier00f4a492015-08-19 17:21:46895#endif // _LIBCPP_CONFIG