2 //===--------------------------- __config ---------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 #ifndef _LIBCPP_CONFIG
12 #define _LIBCPP_CONFIG
14 #ifndef _MSC_VER // explicit macro necessary because it is only defined below in this file
15 #pragma GCC system_header
19 #define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__)
22 #define _LIBCPP_VERSION 1101
24 #define _LIBCPP_ABI_VERSION 1
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)
29 #define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION)
31 #ifdef __LITTLE_ENDIAN__
33 #define _LIBCPP_LITTLE_ENDIAN 1
34 #define _LIBCPP_BIG_ENDIAN 0
35 #endif // __LITTLE_ENDIAN__
36 #endif // __LITTLE_ENDIAN__
40 #define _LIBCPP_LITTLE_ENDIAN 0
41 #define _LIBCPP_BIG_ENDIAN 1
42 #endif // __BIG_ENDIAN__
43 #endif // __BIG_ENDIAN__
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
60 # include <sys/endian.h>
61 # if _BYTE_ORDER == _LITTLE_ENDIAN
62 # define _LIBCPP_LITTLE_ENDIAN 1
63 # define _LIBCPP_BIG_ENDIAN 0
64 # else // _BYTE_ORDER == _LITTLE_ENDIAN
65 # define _LIBCPP_LITTLE_ENDIAN 0
66 # define _LIBCPP_BIG_ENDIAN 1
67 # endif // _BYTE_ORDER == _LITTLE_ENDIAN
68 # define _LIBCPP_HAS_QUICK_EXIT
72 # define _LIBCPP_LITTLE_ENDIAN 1
73 # define _LIBCPP_BIG_ENDIAN 0
74 // Compiler intrinsics (GCC or MSVC)
75 # if (defined(_MSC_VER) && _MSC_VER >= 1400) \
76 || (defined(__GNUC__) && _GNUC_VER > 403)
77 # define _LIBCP_HAS_IS_BASE_OF
82 # if defined(__GNUC__) && _GNUC_VER >= 403
83 # define _LIBCP_HAS_IS_BASE_OF
88 # include <sys/isa_defs.h>
89 # ifdef _LITTLE_ENDIAN
90 # define _LIBCPP_LITTLE_ENDIAN 1
91 # define _LIBCPP_BIG_ENDIAN 0
93 # define _LIBCPP_LITTLE_ENDIAN 0
94 # define _LIBCPP_BIG_ENDIAN 1
98 #if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
100 # if __BYTE_ORDER == __LITTLE_ENDIAN
101 # define _LIBCPP_LITTLE_ENDIAN 1
102 # define _LIBCPP_BIG_ENDIAN 0
103 # elif __BYTE_ORDER == __BIG_ENDIAN
104 # define _LIBCPP_LITTLE_ENDIAN 0
105 # define _LIBCPP_BIG_ENDIAN 1
106 # else // __BYTE_ORDER == __BIG_ENDIAN
107 # error unable to determine endian
109 #endif // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
113 // only really useful for a DLL
114 #ifdef _LIBCPP_DLL // this should be a compiler builtin define ideally...
116 # define _LIBCPP_HIDDEN
117 # define _LIBCPP_FUNC_VIS __declspec(dllexport)
118 # define _LIBCPP_TYPE_VIS __declspec(dllexport)
120 # define _LIBCPP_HIDDEN
121 # define _LIBCPP_FUNC_VIS __declspec(dllimport)
122 # define _LIBCPP_TYPE_VIS __declspec(dllimport)
125 # define _LIBCPP_HIDDEN
126 # define _LIBCPP_FUNC_VIS
127 # define _LIBCPP_TYPE_VIS
130 #ifndef _LIBCPP_INLINE_VISIBILITY
132 # define _LIBCPP_INLINE_VISIBILITY __forceinline
133 # else // MinGW GCC and Clang
134 # define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__))
138 #ifndef _LIBCPP_EXCEPTION_ABI
139 #define _LIBCPP_EXCEPTION_ABI _LIBCPP_TYPE_VIS
142 #ifndef _LIBCPP_ALWAYS_INLINE
144 # define _LIBCPP_ALWAYS_INLINE __forceinline
150 #ifndef __has_attribute
151 #define __has_attribute(__x) 0
154 #ifndef _LIBCPP_HIDDEN
155 #define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden")))
158 #ifndef _LIBCPP_FUNC_VIS
159 #define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default")))
162 #ifndef _LIBCPP_TYPE_VIS
163 # if __has_attribute(type_visibility)
164 # define _LIBCPP_TYPE_VIS __attribute__ ((__type_visibility__("default")))
166 # define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default")))
170 #ifndef _LIBCPP_INLINE_VISIBILITY
171 #define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__))
174 #ifndef _LIBCPP_EXCEPTION_ABI
175 #define _LIBCPP_EXCEPTION_ABI _LIBCPP_TYPE_VIS
178 #ifndef _LIBCPP_CANTTHROW
179 #define _LIBCPP_CANTTHROW __attribute__ ((__nothrow__))
182 #ifndef _LIBCPP_ALWAYS_INLINE
183 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__))
186 #if defined(__clang__)
188 #if __has_feature(cxx_alignas)
189 # define _ALIGNAS_TYPE(x) alignas(x)
190 # define _ALIGNAS(x) alignas(x)
192 # define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
193 # define _ALIGNAS(x) __attribute__((__aligned__(x)))
196 #if !__has_feature(cxx_alias_templates)
197 #define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
200 #ifndef __GXX_EXPERIMENTAL_CXX0X__
202 #define _LIBCPP_HAS_NO_UNICODE_CHARS
204 typedef __char16_t char16_t;
205 typedef __char32_t char32_t;
209 #if !(__has_feature(cxx_exceptions))
210 #define _LIBCPP_NO_EXCEPTIONS
213 #if !(__has_feature(cxx_rtti))
214 #define _LIBCPP_NO_RTTI
217 #if !(__has_feature(cxx_strong_enums))
218 #define _LIBCPP_HAS_NO_STRONG_ENUMS
221 #if !(__has_feature(cxx_decltype))
222 #define _LIBCPP_HAS_NO_DECLTYPE
225 #if __has_feature(cxx_attributes)
226 # define _LIBCPP_NORETURN [[noreturn]]
228 # define _LIBCPP_NORETURN __attribute__ ((noreturn))
231 #if !(__has_feature(cxx_defaulted_functions))
232 #define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
233 #endif // !(__has_feature(cxx_defaulted_functions))
235 #if !(__has_feature(cxx_deleted_functions))
236 #define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
237 #endif // !(__has_feature(cxx_deleted_functions))
239 #if !(__has_feature(cxx_lambdas))
240 #define _LIBCPP_HAS_NO_LAMBDAS
243 #if !(__has_feature(cxx_nullptr))
244 #define _LIBCPP_HAS_NO_NULLPTR
247 #if !(__has_feature(cxx_rvalue_references))
248 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES
251 #if !(__has_feature(cxx_static_assert))
252 #define _LIBCPP_HAS_NO_STATIC_ASSERT
255 #if !(__has_feature(cxx_auto_type))
256 #define _LIBCPP_HAS_NO_AUTO_TYPE
259 #if !(__has_feature(cxx_access_control_sfinae)) || !__has_feature(cxx_trailing_return)
260 #define _LIBCPP_HAS_NO_ADVANCED_SFINAE
263 #if !(__has_feature(cxx_variadic_templates))
264 #define _LIBCPP_HAS_NO_VARIADICS
267 #if !(__has_feature(cxx_trailing_return))
268 #define _LIBCPP_HAS_NO_TRAILING_RETURN
271 #if !(__has_feature(cxx_generalized_initializers))
272 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
275 #if __has_feature(is_base_of)
276 # define _LIBCP_HAS_IS_BASE_OF
279 // Objective-C++ features (opt-in)
280 #if __has_feature(objc_arc)
281 #define _LIBCPP_HAS_OBJC_ARC
284 #if __has_feature(objc_arc_weak)
285 #define _LIBCPP_HAS_OBJC_ARC_WEAK
286 #define _LIBCPP_HAS_NO_STRONG_ENUMS
289 #if !(__has_feature(cxx_constexpr))
290 #define _LIBCPP_HAS_NO_CONSTEXPR
293 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
294 #if defined(__FreeBSD__)
295 #define _LIBCPP_HAS_QUICK_EXIT
296 #define _LIBCPP_HAS_C11_FEATURES
297 #elif defined(__linux__)
298 #include <features.h>
299 #if __GLIBC_PREREQ(2, 15)
300 #define _LIBCPP_HAS_QUICK_EXIT
302 #if __GLIBC_PREREQ(2, 17)
303 #define _LIBCPP_HAS_C11_FEATURES
308 #if (__has_feature(cxx_noexcept))
309 # define _NOEXCEPT noexcept
310 # define _NOEXCEPT_(x) noexcept(x)
312 # define _NOEXCEPT throw()
313 # define _NOEXCEPT_(x)
316 #if __has_feature(underlying_type)
317 # define _LIBCXX_UNDERLYING_TYPE(T) __underlying_type(T)
320 // Inline namespaces are available in Clang regardless of C++ dialect.
321 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
322 #define _LIBCPP_END_NAMESPACE_STD } }
323 #define _VSTD std::_LIBCPP_NAMESPACE
326 inline namespace _LIBCPP_NAMESPACE {
330 #elif defined(__GNUC__)
332 #define _ALIGNAS(x) __attribute__((__aligned__(x)))
333 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
335 #define _LIBCPP_NORETURN __attribute__((noreturn))
338 #define _LIBCPP_NO_EXCEPTIONS
341 #define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
342 #define _LIBCPP_HAS_NO_CONSTEXPR
344 #define _NOEXCEPT throw()
345 #define _NOEXCEPT_(x)
347 #ifndef __GXX_EXPERIMENTAL_CXX0X__
349 #define _LIBCPP_HAS_NO_ADVANCED_SFINAE
350 #define _LIBCPP_HAS_NO_DECLTYPE
351 #define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
352 #define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
353 #define _LIBCPP_HAS_NO_NULLPTR
354 #define _LIBCPP_HAS_NO_STATIC_ASSERT
355 #define _LIBCPP_HAS_NO_UNICODE_CHARS
356 #define _LIBCPP_HAS_NO_VARIADICS
357 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES
358 #define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
360 #else // __GXX_EXPERIMENTAL_CXX0X__
362 #define _LIBCPP_HAS_NO_TRAILING_RETURN
363 #define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
366 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES
370 #define _LIBCPP_HAS_NO_STATIC_ASSERT
374 #define _LIBCPP_HAS_NO_ADVANCED_SFINAE
375 #define _LIBCPP_HAS_NO_DECLTYPE
376 #define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
377 #define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
378 #define _LIBCPP_HAS_NO_UNICODE_CHARS
379 #define _LIBCPP_HAS_NO_VARIADICS
380 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
381 #endif // _GNUC_VER < 404
384 #define _LIBCPP_HAS_NO_NULLPTR
387 #endif // __GXX_EXPERIMENTAL_CXX0X__
389 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { namespace _LIBCPP_NAMESPACE {
390 #define _LIBCPP_END_NAMESPACE_STD } }
391 #define _VSTD std::_LIBCPP_NAMESPACE
394 namespace _LIBCPP_NAMESPACE {
396 using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
399 #elif defined(_MSC_VER)
401 #define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
402 #define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
403 #define _LIBCPP_HAS_NO_CONSTEXPR
404 #define _LIBCPP_HAS_NO_UNICODE_CHARS
405 #define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
406 #define __alignof__ __alignof
407 #define _LIBCPP_NORETURN __declspec(noreturn)
408 #define _ALIGNAS(x) __declspec(align(x))
409 #define _LIBCPP_HAS_NO_VARIADICS
411 #define _NOEXCEPT throw()
412 #define _NOEXCEPT_(x)
414 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
415 #define _LIBCPP_END_NAMESPACE_STD }
421 #endif // __clang__ || __GNUC___ || _MSC_VER
423 #ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
424 typedef unsigned short char16_t;
425 typedef unsigned int char32_t;
426 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS
428 #ifdef _LIBCPP_HAS_NO_STATIC_ASSERT
430 template <bool> struct __static_assert_test;
431 template <> struct __static_assert_test<true> {};
432 template <unsigned> struct __static_assert_check {};
433 #define static_assert(__b, __m) \
434 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \
435 _LIBCPP_CONCAT(__t, __LINE__)
437 #endif // _LIBCPP_HAS_NO_STATIC_ASSERT
439 #ifdef _LIBCPP_HAS_NO_DECLTYPE
440 #define decltype(x) __typeof__(x)
443 #ifdef _LIBCPP_HAS_NO_CONSTEXPR
444 #define _LIBCPP_CONSTEXPR
446 #define _LIBCPP_CONSTEXPR constexpr
449 #ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
450 #define _LIBCPP_DEFAULT {}
452 #define _LIBCPP_DEFAULT = default;
456 #define _NOALIAS __attribute__((__malloc__))
461 #ifndef __has_feature
462 #define __has_feature(__x) 0
465 #if __has_feature(cxx_explicit_conversions)
466 # define _LIBCPP_EXPLICIT explicit
468 # define _LIBCPP_EXPLICIT
471 #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
472 #define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx
473 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \
475 _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \
476 _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \
477 _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \
479 #else // _LIBCPP_HAS_NO_STRONG_ENUMS
480 #define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_TYPE_VIS x
481 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x)
482 #endif // _LIBCPP_HAS_NO_STRONG_ENUMS
484 #ifndef _LIBCPP_EXTERN_TEMPLATE
485 #define _LIBCPP_EXTERN_TEMPLATE(...) extern template __VA_ARGS__;
488 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32) || defined(__sun__) || defined(__NetBSD__)
489 #define _LIBCPP_LOCALE__L_EXTENSIONS 1
492 #define _DECLARE_C99_LDBL_MATH 1
495 #if defined(__APPLE__) || defined(__FreeBSD__)
496 #define _LIBCPP_HAS_DEFAULTRUNELOCALE
499 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__)
500 #define _LIBCPP_WCTYPE_IS_MASK
503 #ifdef _LIBCPP_DEBUG2
504 # if _LIBCPP_DEBUG2 == 0
505 # define _LIBCPP_DEBUG_LEVEL 1
506 # elif _LIBCPP_DEBUG2 == 1
507 # define _LIBCPP_DEBUG_LEVEL 2
509 # error Supported values for _LIBCPP_DEBUG2 are 0 and 1
513 #ifndef _LIBCPP_STD_VER
514 # if __cplusplus <= 201103L
515 # define _LIBCPP_STD_VER 11
517 # define _LIBCPP_STD_VER 13 // current year, or date of c++14 ratification
519 #endif // _LIBCPP_STD_VER
521 #ifdef _LIBCPP_DEBUG2
524 # define _LIBCPP_ASSERT(x, m) ((void)0)
527 #endif // _LIBCPP_CONFIG