__config revision 242945 
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#endif  // __FreeBSD__
55
56#ifdef _WIN32
57#  define _LIBCPP_LITTLE_ENDIAN 1
58#  define _LIBCPP_BIG_ENDIAN    0
59// Compiler intrinsics (GCC or MSVC)
60#  if (defined(_MSC_VER) && _MSC_VER >= 1400) \
61   || (defined(__GNUC__) && _GNUC_VER > 403)
62#    define _LIBCP_HAS_IS_BASE_OF
63#  endif
64#endif  // _WIN32
65
66#ifdef __sun__
67# include <sys/isa_defs.h>
68# ifdef _LITTLE_ENDIAN
69#   define _LIBCPP_LITTLE_ENDIAN 1
70#   define _LIBCPP_BIG_ENDIAN    0
71# else
72#   define _LIBCPP_LITTLE_ENDIAN 0
73#   define _LIBCPP_BIG_ENDIAN    1
74# endif
75#endif // __sun__
76
77#if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
78# include <endian.h>
79# if __BYTE_ORDER == __LITTLE_ENDIAN
80#  define _LIBCPP_LITTLE_ENDIAN 1
81#  define _LIBCPP_BIG_ENDIAN    0
82# elif __BYTE_ORDER == __BIG_ENDIAN
83#  define _LIBCPP_LITTLE_ENDIAN 0
84#  define _LIBCPP_BIG_ENDIAN    1
85# else  // __BYTE_ORDER == __BIG_ENDIAN
86#  error unable to determine endian
87# endif
88#endif  // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
89
90#if _WIN32
91
92// only really useful for a DLL
93#ifdef _LIBCPP_DLL // this should be a compiler builtin define ideally...
94# ifdef cxx_EXPORTS
95#  define _LIBCPP_HIDDEN
96#  define _LIBCPP_VISIBLE __declspec(dllexport)
97# else
98#  define _LIBCPP_HIDDEN
99#  define _LIBCPP_VISIBLE __declspec(dllimport)
100# endif
101#else
102# define _LIBCPP_HIDDEN
103# define _LIBCPP_VISIBLE
104#endif
105
106#ifndef _LIBCPP_INLINE_VISIBILITY
107# if _MSC_VER
108#  define _LIBCPP_INLINE_VISIBILITY __forceinline
109# else // MinGW GCC and Clang
110#  define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__))
111# endif
112#endif
113
114#ifndef _LIBCPP_EXCEPTION_ABI
115#define _LIBCPP_EXCEPTION_ABI _LIBCPP_VISIBLE
116#endif
117
118#ifndef _LIBCPP_ALWAYS_INLINE
119# if _MSC_VER
120#  define _LIBCPP_ALWAYS_INLINE __forceinline
121# endif
122#endif
123
124#endif // _WIN32
125
126#ifndef _LIBCPP_HIDDEN
127#define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden")))
128#endif
129
130#ifndef _LIBCPP_VISIBLE
131#define _LIBCPP_VISIBLE __attribute__ ((__visibility__("default")))
132#endif
133
134#ifndef _LIBCPP_INLINE_VISIBILITY
135#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__))
136#endif
137
138#ifndef _LIBCPP_EXCEPTION_ABI
139#define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default")))
140#endif
141
142#ifndef _LIBCPP_CANTTHROW
143#define _LIBCPP_CANTTHROW __attribute__ ((__nothrow__))
144#endif
145
146#ifndef _LIBCPP_ALWAYS_INLINE
147#define _LIBCPP_ALWAYS_INLINE  __attribute__ ((__visibility__("hidden"), __always_inline__))
148#endif
149
150#if defined(__clang__)
151
152#if __has_feature(cxx_alignas)
153#  define _ALIGNAS_TYPE(x) alignas(x)
154#  define _ALIGNAS(x) alignas(x)
155#else
156#  define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
157#  define _ALIGNAS(x) __attribute__((__aligned__(x)))
158#endif
159
160#if !__has_feature(cxx_alias_templates)
161#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
162#endif
163
164#ifndef __GXX_EXPERIMENTAL_CXX0X__
165#ifdef __linux__
166#define _LIBCPP_HAS_NO_UNICODE_CHARS
167#else
168typedef __char16_t char16_t;
169typedef __char32_t char32_t;
170#endif
171#endif
172
173#if !(__has_feature(cxx_exceptions))
174#define _LIBCPP_NO_EXCEPTIONS
175#endif
176
177#if !(__has_feature(cxx_rtti))
178#define _LIBCPP_NO_RTTI
179#endif
180
181#if !(__has_feature(cxx_strong_enums))
182#define _LIBCPP_HAS_NO_STRONG_ENUMS
183#endif
184
185#if !(__has_feature(cxx_decltype))
186#define _LIBCPP_HAS_NO_DECLTYPE
187#endif
188
189#if __has_feature(cxx_attributes)
190#  define _LIBCPP_NORETURN [[noreturn]]
191#else
192#  define _LIBCPP_NORETURN __attribute__ ((noreturn))
193#endif
194
195#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
196
197#if !(__has_feature(cxx_deleted_functions))
198#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
199#endif  // !(__has_feature(cxx_deleted_functions))
200
201#if !(__has_feature(cxx_lambdas))
202#define _LIBCPP_HAS_NO_LAMBDAS
203#endif
204
205#if !(__has_feature(cxx_nullptr))
206#define _LIBCPP_HAS_NO_NULLPTR
207#endif
208
209#if !(__has_feature(cxx_rvalue_references))
210#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
211#endif
212
213#if !(__has_feature(cxx_static_assert))
214#define _LIBCPP_HAS_NO_STATIC_ASSERT
215#endif
216
217#if !(__has_feature(cxx_auto_type))
218#define _LIBCPP_HAS_NO_AUTO_TYPE
219#endif
220
221#if !(__has_feature(cxx_access_control_sfinae)) || !__has_feature(cxx_trailing_return)
222#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
223#endif
224
225#if !(__has_feature(cxx_variadic_templates))
226#define _LIBCPP_HAS_NO_VARIADICS
227#endif
228
229#if !(__has_feature(cxx_trailing_return))
230#define _LIBCPP_HAS_NO_TRAILING_RETURN
231#endif
232
233#if !(__has_feature(cxx_generalized_initializers))
234#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
235#endif
236
237#if __has_feature(is_base_of)
238#  define _LIBCP_HAS_IS_BASE_OF
239#endif
240
241// Objective-C++ features (opt-in)
242#if __has_feature(objc_arc)
243#define _LIBCPP_HAS_OBJC_ARC
244#endif
245
246#if __has_feature(objc_arc_weak)
247#define _LIBCPP_HAS_OBJC_ARC_WEAK
248#define _LIBCPP_HAS_NO_STRONG_ENUMS
249#endif
250
251#if !(__has_feature(cxx_constexpr))
252#define _LIBCPP_HAS_NO_CONSTEXPR
253#endif
254
255#if __FreeBSD__ && (__ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L)
256#define _LIBCPP_HAS_QUICK_EXIT
257#define _LIBCPP_HAS_C11_FEATURES
258#endif
259
260#if (__has_feature(cxx_noexcept))
261#  define _NOEXCEPT noexcept
262#  define _NOEXCEPT_(x) noexcept(x)
263#else
264#  define _NOEXCEPT throw()
265#  define _NOEXCEPT_(x)
266#endif
267
268#if __has_feature(underlying_type)
269#  define _LIBCXX_UNDERLYING_TYPE(T) __underlying_type(T)
270#endif
271
272// Inline namespaces are available in Clang regardless of C++ dialect.
273#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
274#define _LIBCPP_END_NAMESPACE_STD  } }
275#define _VSTD std::_LIBCPP_NAMESPACE
276
277namespace std {
278  inline namespace _LIBCPP_NAMESPACE {
279  }
280}
281
282#elif defined(__GNUC__)
283
284#define _ALIGNAS(x) __attribute__((__aligned__(x)))
285#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
286
287#define _LIBCPP_NORETURN __attribute__((noreturn))
288
289#if !__EXCEPTIONS
290#define _LIBCPP_NO_EXCEPTIONS
291#endif
292
293#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
294#define _LIBCPP_HAS_NO_CONSTEXPR
295
296#define _NOEXCEPT throw()
297#define _NOEXCEPT_(x)
298
299#ifndef __GXX_EXPERIMENTAL_CXX0X__
300
301#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
302#define _LIBCPP_HAS_NO_DECLTYPE
303#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
304#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
305#define _LIBCPP_HAS_NO_NULLPTR
306#define _LIBCPP_HAS_NO_STATIC_ASSERT
307#define _LIBCPP_HAS_NO_UNICODE_CHARS
308#define _LIBCPP_HAS_NO_VARIADICS
309#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
310#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
311
312#else  // __GXX_EXPERIMENTAL_CXX0X__
313
314#define _LIBCPP_HAS_NO_TRAILING_RETURN
315#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
316
317#if _GNUC_VER < 403
318#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
319#endif
320
321#if _GNUC_VER < 403
322#define _LIBCPP_HAS_NO_STATIC_ASSERT
323#endif
324
325#if _GNUC_VER < 404
326#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
327#define _LIBCPP_HAS_NO_DECLTYPE
328#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
329#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
330#define _LIBCPP_HAS_NO_UNICODE_CHARS
331#define _LIBCPP_HAS_NO_VARIADICS
332#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
333#endif  // _GNUC_VER < 404
334
335#if _GNUC_VER < 406
336#define _LIBCPP_HAS_NO_NULLPTR
337#endif
338
339#endif  // __GXX_EXPERIMENTAL_CXX0X__
340
341#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { namespace _LIBCPP_NAMESPACE {
342#define _LIBCPP_END_NAMESPACE_STD  } }
343#define _VSTD std::_LIBCPP_NAMESPACE
344
345namespace std {
346namespace _LIBCPP_NAMESPACE {
347}
348using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
349}
350
351#elif defined(_MSC_VER)
352
353#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
354#define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
355#define _LIBCPP_HAS_NO_CONSTEXPR
356#define _LIBCPP_HAS_NO_UNICODE_CHARS
357#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
358#define __alignof__ __alignof
359#define _LIBCPP_NORETURN __declspec(noreturn)
360#define _ALIGNAS(x) __declspec(align(x))
361#define _LIBCPP_HAS_NO_VARIADICS
362
363#define _NOEXCEPT throw()
364#define _NOEXCEPT_(x)
365
366#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
367#define _LIBCPP_END_NAMESPACE_STD  }
368#define _VSTD std
369
370namespace std {
371}
372
373#endif // __clang__ || __GNUC___ || _MSC_VER
374
375#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
376typedef unsigned short char16_t;
377typedef unsigned int   char32_t;
378#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
379
380#ifdef _LIBCPP_HAS_NO_STATIC_ASSERT
381
382template <bool> struct __static_assert_test;
383template <> struct __static_assert_test<true> {};
384template <unsigned> struct __static_assert_check {};
385#define static_assert(__b, __m) \
386    typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \
387    _LIBCPP_CONCAT(__t, __LINE__)
388
389#endif  // _LIBCPP_HAS_NO_STATIC_ASSERT
390
391#ifdef _LIBCPP_HAS_NO_DECLTYPE
392#define decltype(x) __typeof__(x)
393#endif
394
395#ifdef _LIBCPP_HAS_NO_CONSTEXPR
396#define _LIBCPP_CONSTEXPR
397#else
398#define _LIBCPP_CONSTEXPR constexpr
399#endif
400
401#ifdef __GNUC__
402#define _NOALIAS __attribute__((malloc))
403#else
404#define _NOALIAS
405#endif
406
407#ifndef __has_feature
408#define __has_feature(__x) 0
409#endif
410
411#if __has_feature(cxx_explicit_conversions)
412#   define _LIBCPP_EXPLICIT explicit
413#else
414#   define _LIBCPP_EXPLICIT
415#endif
416
417#ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
418#define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_VISIBLE x { enum __lx
419#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \
420    __lx __v_; \
421    _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \
422    _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \
423    _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \
424    };
425#else  // _LIBCPP_HAS_NO_STRONG_ENUMS
426#define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_VISIBLE x
427#define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x)
428#endif  // _LIBCPP_HAS_NO_STRONG_ENUMS
429
430#ifndef _LIBCPP_EXTERN_TEMPLATE
431#define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__;
432#endif
433
434#if __APPLE__ || __FreeBSD__ || _WIN32 || __sun__
435#define _LIBCPP_LOCALE__L_EXTENSIONS 1
436#endif
437#if __FreeBSD__
438#define _DECLARE_C99_LDBL_MATH 1
439#endif
440
441#if __APPLE__ || __FreeBSD__
442#define _LIBCPP_HAS_DEFAULTRUNELOCALE
443#endif
444
445#if __APPLE__ || __FreeBSD__ || __sun__
446#define _LIBCPP_WCTYPE_IS_MASK
447#endif
448
449#ifdef _LIBCPP_DEBUG2
450#   if _LIBCPP_DEBUG2 == 0
451#       define _LIBCPP_DEBUG_LEVEL 1
452#   elif _LIBCPP_DEBUG2 == 1
453#       define _LIBCPP_DEBUG_LEVEL 2
454#   else
455#       error Supported values for _LIBCPP_DEBUG2 are 0 and 1
456#   endif
457#endif
458
459#ifdef _LIBCPP_DEBUG2
460#   include <__debug>
461#else
462#   define _LIBCPP_ASSERT(x, m) ((void)0)
463#endif
464
465#endif  // _LIBCPP_CONFIG
466