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#define _LIBCPP_VERSION 1001
19
20#define _LIBCPP_ABI_VERSION 1
21
22#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y
23#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y)
24
25#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION)
26
27#ifdef __LITTLE_ENDIAN__
28#if __LITTLE_ENDIAN__
29#define _LIBCPP_LITTLE_ENDIAN 1
30#define _LIBCPP_BIG_ENDIAN    0
31#endif  // __LITTLE_ENDIAN__
32#endif  // __LITTLE_ENDIAN__
33
34#ifdef __BIG_ENDIAN__
35#if __BIG_ENDIAN__
36#define _LIBCPP_LITTLE_ENDIAN 0
37#define _LIBCPP_BIG_ENDIAN    1
38#endif  // __BIG_ENDIAN__
39#endif  // __BIG_ENDIAN__
40
41#ifdef __FreeBSD__
42# include <sys/endian.h>
43#  if _BYTE_ORDER == _LITTLE_ENDIAN
44#   define _LIBCPP_LITTLE_ENDIAN 1
45#   define _LIBCPP_BIG_ENDIAN    0
46# else  // _BYTE_ORDER == _LITTLE_ENDIAN
47#   define _LIBCPP_LITTLE_ENDIAN 0
48#   define _LIBCPP_BIG_ENDIAN    1
49# endif  // _BYTE_ORDER == _LITTLE_ENDIAN
50#endif  // __FreeBSD__
51
52#ifdef _WIN32
53#  define _LIBCPP_LITTLE_ENDIAN 1
54#  define _LIBCPP_BIG_ENDIAN    0
55// Compiler intrinsics (GCC or MSVC)
56#  if (defined(_MSC_VER) && _MSC_VER >= 1400) || (__GNUC__ >= 4 && __GNUC_MINOR__ > 3)
57#    define _LIBCP_HAS_IS_BASE_OF
58#  endif
59#endif  // _WIN32
60
61#if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
62# include <endian.h>
63# if __BYTE_ORDER == __LITTLE_ENDIAN
64#  define _LIBCPP_LITTLE_ENDIAN 1
65#  define _LIBCPP_BIG_ENDIAN    0
66# elif __BYTE_ORDER == __BIG_ENDIAN
67#  define _LIBCPP_LITTLE_ENDIAN 0
68#  define _LIBCPP_BIG_ENDIAN    1
69# else  // __BYTE_ORDER == __BIG_ENDIAN
70#  error unable to determine endian
71# endif
72#endif  // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
73
74#if _WIN32
75
76// only really useful for a DLL
77#ifdef _LIBCPP_DLL // this should be a compiler builtin define ideally...
78# ifdef cxx_EXPORTS
79#  define _LIBCPP_HIDDEN
80#  define _LIBCPP_VISIBLE __declspec(dllexport)
81# else
82#  define _LIBCPP_HIDDEN
83#  define _LIBCPP_VISIBLE __declspec(dllimport)
84# endif
85#else
86# define _LIBCPP_HIDDEN
87# define _LIBCPP_VISIBLE
88#endif
89
90#ifndef _LIBCPP_INLINE_VISIBILITY
91# if _MSC_VER
92#  define _LIBCPP_INLINE_VISIBILITY __forceinline
93# else // MinGW GCC and Clang
94#  define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__))
95# endif
96#endif
97
98#ifndef _LIBCPP_EXCEPTION_ABI
99#define _LIBCPP_EXCEPTION_ABI _LIBCPP_VISIBLE
100#endif
101
102#ifndef _LIBCPP_ALWAYS_INLINE
103# if _MSC_VER
104#  define _LIBCPP_ALWAYS_INLINE __forceinline
105# endif
106#endif
107
108#endif // _WIN32
109
110#ifndef _LIBCPP_HIDDEN
111#define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden")))
112#endif
113
114#ifndef _LIBCPP_VISIBLE
115#define _LIBCPP_VISIBLE __attribute__ ((__visibility__("default")))
116#endif
117
118#ifndef _LIBCPP_INLINE_VISIBILITY
119#define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__))
120#endif
121
122#ifndef _LIBCPP_EXCEPTION_ABI
123#define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default")))
124#endif
125
126#ifndef _LIBCPP_CANTTHROW
127#define _LIBCPP_CANTTHROW __attribute__ ((__nothrow__))
128#endif
129
130#ifndef _LIBCPP_ALWAYS_INLINE
131#define _LIBCPP_ALWAYS_INLINE  __attribute__ ((__visibility__("hidden"), __always_inline__))
132#endif
133
134#if defined(__clang__)
135
136#if __has_feature(cxx_alignas)
137#  define _ALIGNAS(x) alignas(x)
138#else
139#  define _ALIGNAS(x) __attribute__((__aligned__(x)))
140#endif
141
142#if !__has_feature(cxx_alias_templates)
143#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
144#endif
145
146#ifndef __GXX_EXPERIMENTAL_CXX0X__
147#ifdef __linux__
148#define _LIBCPP_HAS_NO_UNICODE_CHARS
149#else
150typedef __char16_t char16_t;
151typedef __char32_t char32_t;
152#endif
153#endif
154
155#if !(__has_feature(cxx_exceptions))
156#define _LIBCPP_NO_EXCEPTIONS
157#endif
158
159#if !(__has_feature(cxx_rtti))
160#define _LIBCPP_NO_RTTI
161#endif
162
163#if !(__has_feature(cxx_decltype))
164#define _LIBCPP_HAS_NO_DECLTYPE
165#endif
166
167#if __has_feature(cxx_attributes)
168#  define _ATTRIBUTE(x) [[x]]
169#else
170#  define _ATTRIBUTE(x) __attribute__ ((x))
171#endif
172
173#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
174
175#if !(__has_feature(cxx_deleted_functions))
176#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
177#endif  // !(__has_feature(cxx_deleted_functions))
178
179#if !(__has_feature(cxx_lambdas))
180#define _LIBCPP_HAS_NO_LAMBDAS
181#endif
182
183#if !(__has_feature(cxx_nullptr))
184#define _LIBCPP_HAS_NO_NULLPTR
185#endif
186
187#if !(__has_feature(cxx_rvalue_references))
188#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
189#endif
190
191#if !(__has_feature(cxx_static_assert))
192#define _LIBCPP_HAS_NO_STATIC_ASSERT
193#endif
194
195#if !(__has_feature(cxx_auto_type))
196#define _LIBCPP_HAS_NO_AUTO_TYPE
197#endif
198
199#if !(__has_feature(cxx_access_control_sfinae)) || !__has_feature(cxx_trailing_return)
200#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
201#endif
202
203#if !(__has_feature(cxx_variadic_templates))
204#define _LIBCPP_HAS_NO_VARIADICS
205#endif
206
207#if !(__has_feature(cxx_trailing_return))
208#define _LIBCPP_HAS_NO_TRAILING_RETURN
209#endif
210
211#if !(__has_feature(cxx_generalized_initializers))
212#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
213#endif
214
215#if __has_feature(is_base_of)
216#  define _LIBCP_HAS_IS_BASE_OF
217#endif
218
219// Objective-C++ features (opt-in)
220#if __has_feature(objc_arc)
221#define _LIBCPP_HAS_OBJC_ARC
222#endif
223
224#if __has_feature(objc_arc_weak)
225#define _LIBCPP_HAS_OBJC_ARC_WEAK
226#endif
227
228#if !(__has_feature(cxx_constexpr))
229#define _LIBCPP_HAS_NO_CONSTEXPR
230#endif
231
232#if (__has_feature(cxx_noexcept))
233#  define _NOEXCEPT noexcept
234#  define _NOEXCEPT_(x) noexcept(x)
235#else
236#  define _NOEXCEPT throw()
237#  define _NOEXCEPT_(x)
238#endif
239
240#if __has_feature(underlying_type)
241#  define _LIBCXX_UNDERLYING_TYPE(T) __underlying_type(T)
242#endif
243
244// Inline namespaces are available in Clang regardless of C++ dialect.
245#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
246#define _LIBCPP_END_NAMESPACE_STD  } }
247#define _VSTD std::_LIBCPP_NAMESPACE
248
249namespace std {
250  inline namespace _LIBCPP_NAMESPACE {
251  }
252}
253
254#elif defined(__GNUC__)
255
256#define _ALIGNAS(x) __attribute__((__aligned__(x)))
257
258#define _ATTRIBUTE(x) __attribute__((x))
259
260#if !__EXCEPTIONS
261#define _LIBCPP_NO_EXCEPTIONS
262#endif
263
264#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
265#define _LIBCPP_HAS_NO_CONSTEXPR
266
267#define _NOEXCEPT throw()
268#define _NOEXCEPT_(x)
269
270#ifndef __GXX_EXPERIMENTAL_CXX0X__
271
272#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
273#define _LIBCPP_HAS_NO_DECLTYPE
274#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
275#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
276#define _LIBCPP_HAS_NO_NULLPTR
277#define _LIBCPP_HAS_NO_STATIC_ASSERT
278#define _LIBCPP_HAS_NO_UNICODE_CHARS
279#define _LIBCPP_HAS_NO_VARIADICS
280#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
281#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
282
283#else  // __GXX_EXPERIMENTAL_CXX0X__
284
285#define _LIBCPP_HAS_NO_TRAILING_RETURN
286#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
287
288#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 3)
289#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
290#endif
291
292#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 3)
293#define _LIBCPP_HAS_NO_STATIC_ASSERT
294#endif
295
296#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
297#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
298#define _LIBCPP_HAS_NO_DECLTYPE
299#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
300#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
301#define _LIBCPP_HAS_NO_UNICODE_CHARS
302#define _LIBCPP_HAS_NO_VARIADICS
303#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
304#endif  // !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
305
306#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 6)
307#define _LIBCPP_HAS_NO_NULLPTR
308#endif
309
310#endif  // __GXX_EXPERIMENTAL_CXX0X__
311
312#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { namespace _LIBCPP_NAMESPACE {
313#define _LIBCPP_END_NAMESPACE_STD  } }
314#define _VSTD std::_LIBCPP_NAMESPACE
315
316namespace std {
317namespace _LIBCPP_NAMESPACE {
318}
319using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
320}
321
322#elif defined(_MSC_VER)
323
324#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
325#define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
326#define _LIBCPP_HAS_NO_CONSTEXPR
327#define _LIBCPP_HAS_NO_UNICODE_CHARS
328#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
329#define __alignof__ __alignof
330#define _ATTRIBUTE __declspec
331#define _ALIGNAS(x) __declspec(align(x))
332#define _LIBCPP_HAS_NO_VARIADICS
333
334#define _NOEXCEPT throw()
335#define _NOEXCEPT_(x)
336
337#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
338#define _LIBCPP_END_NAMESPACE_STD  }
339#define _VSTD std
340
341namespace std {
342}
343
344#endif // __clang__ || __GNUC___ || _MSC_VER
345
346#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
347typedef unsigned short char16_t;
348typedef unsigned int   char32_t;
349#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
350
351#ifdef _LIBCPP_HAS_NO_STATIC_ASSERT
352
353template <bool> struct __static_assert_test;
354template <> struct __static_assert_test<true> {};
355template <unsigned> struct __static_assert_check {};
356#define static_assert(__b, __m) \
357    typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \
358    _LIBCPP_CONCAT(__t, __LINE__)
359
360#endif  // _LIBCPP_HAS_NO_STATIC_ASSERT
361
362#ifdef _LIBCPP_HAS_NO_DECLTYPE
363#define decltype(x) __typeof__(x)
364#endif
365
366#ifdef _LIBCPP_HAS_NO_CONSTEXPR
367#define constexpr const
368#endif
369
370#ifndef __has_feature
371#define __has_feature(__x) 0
372#endif
373
374#if __APPLE__ || __FreeBSD__ || _WIN32
375#define _LIBCPP_LOCALE__L_EXTENSIONS 1
376#endif
377#if __FreeBSD__
378#define _DECLARE_C99_LDBL_MATH 1
379#endif
380
381#if __APPLE__ || __FreeBSD__
382#define _LIBCPP_HAS_DEFAULTRUNELOCALE
383#endif
384
385#if __APPLE__ || __FreeBSD__
386#define _LIBCPP_WCTYPE_IS_MASK
387#endif
388
389#ifdef _LIBCPP_DEBUG2
390#   if _LIBCPP_DEBUG2 == 0
391#       define _LIBCPP_DEBUG_LEVEL 1
392#   elif _LIBCPP_DEBUG2 == 1
393#       define _LIBCPP_DEBUG_LEVEL 2
394#   else
395#       error Supported values for _LIBCPP_DEBUG2 are 0 and 1
396#   endif
397#endif
398
399#ifdef _LIBCPP_DEBUG2
400#   include <__debug>
401#else
402#   define _LIBCPP_ASSERT(x, m) ((void)0)
403#endif
404
405#endif  // _LIBCPP_CONFIG
406