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 !_MSC_VER // explicit macro necessary because it is only defined below in this file
15#pragma GCC system_header
16#endif
17
18#ifdef __GNUC__
19#define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__)
20#endif
21
22#define _LIBCPP_VERSION 1101
23
24#define _LIBCPP_ABI_VERSION 1
25
26#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y
27#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y)
28
29#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION)
30
31#ifdef __LITTLE_ENDIAN__
32#if __LITTLE_ENDIAN__
33#define _LIBCPP_LITTLE_ENDIAN 1
34#define _LIBCPP_BIG_ENDIAN    0
35#endif  // __LITTLE_ENDIAN__
36#endif  // __LITTLE_ENDIAN__
37
38#ifdef __BIG_ENDIAN__
39#if __BIG_ENDIAN__
40#define _LIBCPP_LITTLE_ENDIAN 0
41#define _LIBCPP_BIG_ENDIAN    1
42#endif  // __BIG_ENDIAN__
43#endif  // __BIG_ENDIAN__
44
45#ifdef __FreeBSD__
46# include <sys/endian.h>
47#  if _BYTE_ORDER == _LITTLE_ENDIAN
48#   define _LIBCPP_LITTLE_ENDIAN 1
49#   define _LIBCPP_BIG_ENDIAN    0
50# else  // _BYTE_ORDER == _LITTLE_ENDIAN
51#   define _LIBCPP_LITTLE_ENDIAN 0
52#   define _LIBCPP_BIG_ENDIAN    1
53# endif  // _BYTE_ORDER == _LITTLE_ENDIAN
54# ifndef __LONG_LONG_SUPPORTED
55#  define _LIBCPP_HAS_NO_LONG_LONG
56# endif  // __LONG_LONG_SUPPORTED
57#endif  // __FreeBSD__
58
59#ifdef _WIN32
60#  define _LIBCPP_LITTLE_ENDIAN 1
61#  define _LIBCPP_BIG_ENDIAN    0
62// Compiler intrinsics (GCC or MSVC)
63#  if (defined(_MSC_VER) && _MSC_VER >= 1400) \
64   || (defined(__GNUC__) && _GNUC_VER > 403)
65#    define _LIBCP_HAS_IS_BASE_OF
66#  endif
67#endif  // _WIN32
68
69#ifdef __linux__
70#  if defined(__GNUC__) && _GNUC_VER >= 403
71#    define _LIBCP_HAS_IS_BASE_OF
72#  endif
73#endif
74
75#ifdef __sun__
76# include <sys/isa_defs.h>
77# ifdef _LITTLE_ENDIAN
78#   define _LIBCPP_LITTLE_ENDIAN 1
79#   define _LIBCPP_BIG_ENDIAN    0
80# else
81#   define _LIBCPP_LITTLE_ENDIAN 0
82#   define _LIBCPP_BIG_ENDIAN    1
83# endif
84#endif // __sun__
85
86#if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
87# include <endian.h>
88# if __BYTE_ORDER == __LITTLE_ENDIAN
89#  define _LIBCPP_LITTLE_ENDIAN 1
90#  define _LIBCPP_BIG_ENDIAN    0
91# elif __BYTE_ORDER == __BIG_ENDIAN
92#  define _LIBCPP_LITTLE_ENDIAN 0
93#  define _LIBCPP_BIG_ENDIAN    1
94# else  // __BYTE_ORDER == __BIG_ENDIAN
95#  error unable to determine endian
96# endif
97#endif  // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
98
99#if _WIN32
100
101// only really useful for a DLL
102#ifdef _LIBCPP_DLL // this should be a compiler builtin define ideally...
103# ifdef cxx_EXPORTS
104#  define _LIBCPP_HIDDEN
105#  define _LIBCPP_VISIBLE __declspec(dllexport)
106# else
107#  define _LIBCPP_HIDDEN
108#  define _LIBCPP_VISIBLE __declspec(dllimport)
109# endif
110#else
111# define _LIBCPP_HIDDEN
112# define _LIBCPP_VISIBLE
113#endif
114
115#ifndef _LIBCPP_INLINE_VISIBILITY
116# if _MSC_VER
117#  define _LIBCPP_INLINE_VISIBILITY __forceinline
118# else // MinGW GCC and Clang
119#  define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__))
120# endif
121#endif
122
123#ifndef _LIBCPP_EXCEPTION_ABI
124#define _LIBCPP_EXCEPTION_ABI _LIBCPP_VISIBLE
125#endif
126
127#ifndef _LIBCPP_ALWAYS_INLINE
128# if _MSC_VER
129#  define _LIBCPP_ALWAYS_INLINE __forceinline
130# endif
131#endif
132
133#endif // _WIN32
134
135#ifndef _LIBCPP_HIDDEN
136#define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden")))
137#endif
138
139#ifndef _LIBCPP_VISIBLE
140#define _LIBCPP_VISIBLE __attribute__ ((__visibility__("default")))
141#endif
142
143#ifndef _LIBCPP_INLINE_VISIBILITY
144#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__))
145#endif
146
147#ifndef _LIBCPP_EXCEPTION_ABI
148#define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default")))
149#endif
150
151#ifndef _LIBCPP_CANTTHROW
152#define _LIBCPP_CANTTHROW __attribute__ ((__nothrow__))
153#endif
154
155#ifndef _LIBCPP_ALWAYS_INLINE
156#define _LIBCPP_ALWAYS_INLINE  __attribute__ ((__visibility__("hidden"), __always_inline__))
157#endif
158
159#if defined(__clang__)
160
161#if __has_feature(cxx_alignas)
162#  define _ALIGNAS_TYPE(x) alignas(x)
163#  define _ALIGNAS(x) alignas(x)
164#else
165#  define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
166#  define _ALIGNAS(x) __attribute__((__aligned__(x)))
167#endif
168
169#if !__has_feature(cxx_alias_templates)
170#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
171#endif
172
173#ifndef __GXX_EXPERIMENTAL_CXX0X__
174#ifdef __linux__
175#define _LIBCPP_HAS_NO_UNICODE_CHARS
176#else
177typedef __char16_t char16_t;
178typedef __char32_t char32_t;
179#endif
180#endif
181
182#if !(__has_feature(cxx_exceptions))
183#define _LIBCPP_NO_EXCEPTIONS
184#endif
185
186#if !(__has_feature(cxx_rtti))
187#define _LIBCPP_NO_RTTI
188#endif
189
190#if !(__has_feature(cxx_strong_enums))
191#define _LIBCPP_HAS_NO_STRONG_ENUMS
192#endif
193
194#if !(__has_feature(cxx_decltype))
195#define _LIBCPP_HAS_NO_DECLTYPE
196#endif
197
198#if __has_feature(cxx_attributes)
199#  define _LIBCPP_NORETURN [[noreturn]]
200#else
201#  define _LIBCPP_NORETURN __attribute__ ((noreturn))
202#endif
203
204#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
205
206#if !(__has_feature(cxx_deleted_functions))
207#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
208#endif  // !(__has_feature(cxx_deleted_functions))
209
210#if !(__has_feature(cxx_lambdas))
211#define _LIBCPP_HAS_NO_LAMBDAS
212#endif
213
214#if !(__has_feature(cxx_nullptr))
215#define _LIBCPP_HAS_NO_NULLPTR
216#endif
217
218#if !(__has_feature(cxx_rvalue_references))
219#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
220#endif
221
222#if !(__has_feature(cxx_static_assert))
223#define _LIBCPP_HAS_NO_STATIC_ASSERT
224#endif
225
226#if !(__has_feature(cxx_auto_type))
227#define _LIBCPP_HAS_NO_AUTO_TYPE
228#endif
229
230#if !(__has_feature(cxx_access_control_sfinae)) || !__has_feature(cxx_trailing_return)
231#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
232#endif
233
234#if !(__has_feature(cxx_variadic_templates))
235#define _LIBCPP_HAS_NO_VARIADICS
236#endif
237
238#if !(__has_feature(cxx_trailing_return))
239#define _LIBCPP_HAS_NO_TRAILING_RETURN
240#endif
241
242#if !(__has_feature(cxx_generalized_initializers))
243#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
244#endif
245
246#if __has_feature(is_base_of)
247#  define _LIBCP_HAS_IS_BASE_OF
248#endif
249
250// Objective-C++ features (opt-in)
251#if __has_feature(objc_arc)
252#define _LIBCPP_HAS_OBJC_ARC
253#endif
254
255#if __has_feature(objc_arc_weak)
256#define _LIBCPP_HAS_OBJC_ARC_WEAK
257#define _LIBCPP_HAS_NO_STRONG_ENUMS
258#endif
259
260#if !(__has_feature(cxx_constexpr))
261#define _LIBCPP_HAS_NO_CONSTEXPR
262#endif
263
264#if __FreeBSD__ && (__ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L)
265#define _LIBCPP_HAS_QUICK_EXIT
266#define _LIBCPP_HAS_C11_FEATURES
267#endif
268
269#if (__has_feature(cxx_noexcept))
270#  define _NOEXCEPT noexcept
271#  define _NOEXCEPT_(x) noexcept(x)
272#else
273#  define _NOEXCEPT throw()
274#  define _NOEXCEPT_(x)
275#endif
276
277#if __has_feature(underlying_type)
278#  define _LIBCXX_UNDERLYING_TYPE(T) __underlying_type(T)
279#endif
280
281// Inline namespaces are available in Clang regardless of C++ dialect.
282#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
283#define _LIBCPP_END_NAMESPACE_STD  } }
284#define _VSTD std::_LIBCPP_NAMESPACE
285
286namespace std {
287  inline namespace _LIBCPP_NAMESPACE {
288  }
289}
290
291#elif defined(__GNUC__)
292
293#define _ALIGNAS(x) __attribute__((__aligned__(x)))
294#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
295
296#define _LIBCPP_NORETURN __attribute__((noreturn))
297
298#if !__EXCEPTIONS
299#define _LIBCPP_NO_EXCEPTIONS
300#endif
301
302#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
303#define _LIBCPP_HAS_NO_CONSTEXPR
304
305#define _NOEXCEPT throw()
306#define _NOEXCEPT_(x)
307
308#ifndef __GXX_EXPERIMENTAL_CXX0X__
309
310#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
311#define _LIBCPP_HAS_NO_DECLTYPE
312#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
313#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
314#define _LIBCPP_HAS_NO_NULLPTR
315#define _LIBCPP_HAS_NO_STATIC_ASSERT
316#define _LIBCPP_HAS_NO_UNICODE_CHARS
317#define _LIBCPP_HAS_NO_VARIADICS
318#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
319#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
320
321#else  // __GXX_EXPERIMENTAL_CXX0X__
322
323#define _LIBCPP_HAS_NO_TRAILING_RETURN
324#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
325
326#if _GNUC_VER < 403
327#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
328#endif
329
330#if _GNUC_VER < 403
331#define _LIBCPP_HAS_NO_STATIC_ASSERT
332#endif
333
334#if _GNUC_VER < 404
335#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
336#define _LIBCPP_HAS_NO_DECLTYPE
337#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
338#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
339#define _LIBCPP_HAS_NO_UNICODE_CHARS
340#define _LIBCPP_HAS_NO_VARIADICS
341#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
342#endif  // _GNUC_VER < 404
343
344#if _GNUC_VER < 406
345#define _LIBCPP_HAS_NO_NULLPTR
346#endif
347
348#endif  // __GXX_EXPERIMENTAL_CXX0X__
349
350#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { namespace _LIBCPP_NAMESPACE {
351#define _LIBCPP_END_NAMESPACE_STD  } }
352#define _VSTD std::_LIBCPP_NAMESPACE
353
354namespace std {
355namespace _LIBCPP_NAMESPACE {
356}
357using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
358}
359
360#elif defined(_MSC_VER)
361
362#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
363#define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
364#define _LIBCPP_HAS_NO_CONSTEXPR
365#define _LIBCPP_HAS_NO_UNICODE_CHARS
366#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
367#define __alignof__ __alignof
368#define _LIBCPP_NORETURN __declspec(noreturn)
369#define _ALIGNAS(x) __declspec(align(x))
370#define _LIBCPP_HAS_NO_VARIADICS
371
372#define _NOEXCEPT throw()
373#define _NOEXCEPT_(x)
374
375#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
376#define _LIBCPP_END_NAMESPACE_STD  }
377#define _VSTD std
378
379namespace std {
380}
381
382#endif // __clang__ || __GNUC___ || _MSC_VER
383
384#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
385typedef unsigned short char16_t;
386typedef unsigned int   char32_t;
387#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
388
389#ifdef _LIBCPP_HAS_NO_STATIC_ASSERT
390
391template <bool> struct __static_assert_test;
392template <> struct __static_assert_test<true> {};
393template <unsigned> struct __static_assert_check {};
394#define static_assert(__b, __m) \
395    typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \
396    _LIBCPP_CONCAT(__t, __LINE__)
397
398#endif  // _LIBCPP_HAS_NO_STATIC_ASSERT
399
400#ifdef _LIBCPP_HAS_NO_DECLTYPE
401#define decltype(x) __typeof__(x)
402#endif
403
404#ifdef _LIBCPP_HAS_NO_CONSTEXPR
405#define _LIBCPP_CONSTEXPR
406#else
407#define _LIBCPP_CONSTEXPR constexpr
408#endif
409
410#ifdef __GNUC__
411#define _NOALIAS __attribute__((malloc))
412#else
413#define _NOALIAS
414#endif
415
416#ifndef __has_feature
417#define __has_feature(__x) 0
418#endif
419
420#if __has_feature(cxx_explicit_conversions)
421#   define _LIBCPP_EXPLICIT explicit
422#else
423#   define _LIBCPP_EXPLICIT
424#endif
425
426#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
427#define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_VISIBLE x { enum __lx
428#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \
429    __lx __v_; \
430    _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \
431    _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \
432    _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \
433    };
434#else  // _LIBCPP_HAS_NO_STRONG_ENUMS
435#define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_VISIBLE x
436#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x)
437#endif  // _LIBCPP_HAS_NO_STRONG_ENUMS
438
439#ifndef _LIBCPP_EXTERN_TEMPLATE
440#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__;
441#endif
442
443#if __APPLE__ || __FreeBSD__ || _WIN32 || __sun__
444#define _LIBCPP_LOCALE__L_EXTENSIONS 1
445#endif
446#if __FreeBSD__
447#define _DECLARE_C99_LDBL_MATH 1
448#endif
449
450#if __APPLE__ || __FreeBSD__
451#define _LIBCPP_HAS_DEFAULTRUNELOCALE
452#endif
453
454#if __APPLE__ || __FreeBSD__ || __sun__
455#define _LIBCPP_WCTYPE_IS_MASK
456#endif
457
458#ifdef _LIBCPP_DEBUG2
459#   if _LIBCPP_DEBUG2 == 0
460#       define _LIBCPP_DEBUG_LEVEL 1
461#   elif _LIBCPP_DEBUG2 == 1
462#       define _LIBCPP_DEBUG_LEVEL 2
463#   else
464#       error Supported values for _LIBCPP_DEBUG2 are 0 and 1
465#   endif
466#endif
467
468#ifdef _LIBCPP_DEBUG2
469#   include <__debug>
470#else
471#   define _LIBCPP_ASSERT(x, m) ((void)0)
472#endif
473
474#endif  // _LIBCPP_CONFIG
475