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 #if !defined(_MSC_VER) || defined(__clang__)
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(__clang__) \
76 || (defined(_MSC_VER) && _MSC_VER >= 1400) \
77 || (defined(__GNUC__) && _GNUC_VER > 403)
78 # define _LIBCPP_HAS_IS_BASE_OF
80 # if defined(_MSC_VER) && !defined(__clang__)
81 # define _LIBCPP_MSVC // Using Microsoft Visual C++ compiler
82 # define _LIBCPP_TOSTRING2(x) #x
83 # define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x)
84 # define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x))
86 # // If mingw not explicitly detected, assume using MS C runtime only.
88 # define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library
93 # if defined(__GNUC__) && _GNUC_VER >= 403
94 # define _LIBCPP_HAS_IS_BASE_OF
99 # include <sys/isa_defs.h>
100 # ifdef _LITTLE_ENDIAN
101 # define _LIBCPP_LITTLE_ENDIAN 1
102 # define _LIBCPP_BIG_ENDIAN 0
104 # define _LIBCPP_LITTLE_ENDIAN 0
105 # define _LIBCPP_BIG_ENDIAN 1
109 #if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
111 # if __BYTE_ORDER == __LITTLE_ENDIAN
112 # define _LIBCPP_LITTLE_ENDIAN 1
113 # define _LIBCPP_BIG_ENDIAN 0
114 # elif __BYTE_ORDER == __BIG_ENDIAN
115 # define _LIBCPP_LITTLE_ENDIAN 0
116 # define _LIBCPP_BIG_ENDIAN 1
117 # else // __BYTE_ORDER == __BIG_ENDIAN
118 # error unable to determine endian
120 #endif // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
124 // only really useful for a DLL
125 #ifdef _LIBCPP_DLL // this should be a compiler builtin define ideally...
127 # define _LIBCPP_HIDDEN
128 # define _LIBCPP_FUNC_VIS __declspec(dllexport)
129 # define _LIBCPP_TYPE_VIS __declspec(dllexport)
131 # define _LIBCPP_HIDDEN
132 # define _LIBCPP_FUNC_VIS __declspec(dllimport)
133 # define _LIBCPP_TYPE_VIS __declspec(dllimport)
136 # define _LIBCPP_HIDDEN
137 # define _LIBCPP_FUNC_VIS
138 # define _LIBCPP_TYPE_VIS
141 #define _LIBCPP_TYPE_VIS_ONLY
142 #define _LIBCPP_FUNC_VIS_ONLY
144 #ifndef _LIBCPP_INLINE_VISIBILITY
146 # define _LIBCPP_INLINE_VISIBILITY __forceinline
147 # else // MinGW GCC and Clang
148 # define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__))
152 #ifndef _LIBCPP_EXCEPTION_ABI
153 #define _LIBCPP_EXCEPTION_ABI _LIBCPP_TYPE_VIS
156 #ifndef _LIBCPP_ALWAYS_INLINE
158 # define _LIBCPP_ALWAYS_INLINE __forceinline
164 #ifndef __has_attribute
165 #define __has_attribute(__x) 0
168 #ifndef _LIBCPP_HIDDEN
169 #define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden")))
172 #ifndef _LIBCPP_FUNC_VIS
173 #define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default")))
176 #ifndef _LIBCPP_TYPE_VIS
177 # if __has_attribute(__type_visibility__)
178 # define _LIBCPP_TYPE_VIS __attribute__ ((__type_visibility__("default")))
180 # define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default")))
184 #ifndef _LIBCPP_TYPE_VIS_ONLY
185 # define _LIBCPP_TYPE_VIS_ONLY _LIBCPP_TYPE_VIS
188 #ifndef _LIBCPP_FUNC_VIS_ONLY
189 # define _LIBCPP_FUNC_VIS_ONLY _LIBCPP_FUNC_VIS
192 #ifndef _LIBCPP_INLINE_VISIBILITY
193 #define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__))
196 #ifndef _LIBCPP_EXCEPTION_ABI
197 #define _LIBCPP_EXCEPTION_ABI _LIBCPP_TYPE_VIS
200 #ifndef _LIBCPP_ALWAYS_INLINE
201 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__))
204 #if defined(__clang__)
206 #if __has_feature(cxx_alignas)
207 # define _ALIGNAS_TYPE(x) alignas(x)
208 # define _ALIGNAS(x) alignas(x)
210 # define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
211 # define _ALIGNAS(x) __attribute__((__aligned__(x)))
214 #if !__has_feature(cxx_alias_templates)
215 #define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
218 #ifndef __GXX_EXPERIMENTAL_CXX0X__
220 #define _LIBCPP_HAS_NO_UNICODE_CHARS
222 typedef __char16_t char16_t;
223 typedef __char32_t char32_t;
227 #if !(__has_feature(cxx_exceptions))
228 #define _LIBCPP_NO_EXCEPTIONS
231 #if !(__has_feature(cxx_rtti))
232 #define _LIBCPP_NO_RTTI
235 #if !(__has_feature(cxx_strong_enums))
236 #define _LIBCPP_HAS_NO_STRONG_ENUMS
239 #if !(__has_feature(cxx_decltype))
240 #define _LIBCPP_HAS_NO_DECLTYPE
243 #if __has_feature(cxx_attributes)
244 # define _LIBCPP_NORETURN [[noreturn]]
246 # define _LIBCPP_NORETURN __attribute__ ((noreturn))
249 #if !(__has_feature(cxx_defaulted_functions))
250 #define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
251 #endif // !(__has_feature(cxx_defaulted_functions))
253 #if !(__has_feature(cxx_deleted_functions))
254 #define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
255 #endif // !(__has_feature(cxx_deleted_functions))
257 #if !(__has_feature(cxx_lambdas))
258 #define _LIBCPP_HAS_NO_LAMBDAS
261 #if !(__has_feature(cxx_nullptr))
262 #define _LIBCPP_HAS_NO_NULLPTR
265 #if !(__has_feature(cxx_rvalue_references))
266 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES
269 #if !(__has_feature(cxx_static_assert))
270 #define _LIBCPP_HAS_NO_STATIC_ASSERT
273 #if !(__has_feature(cxx_auto_type))
274 #define _LIBCPP_HAS_NO_AUTO_TYPE
277 #if !(__has_feature(cxx_access_control_sfinae)) || !__has_feature(cxx_trailing_return)
278 #define _LIBCPP_HAS_NO_ADVANCED_SFINAE
281 #if !(__has_feature(cxx_variadic_templates))
282 #define _LIBCPP_HAS_NO_VARIADICS
285 #if !(__has_feature(cxx_trailing_return))
286 #define _LIBCPP_HAS_NO_TRAILING_RETURN
289 #if !(__has_feature(cxx_generalized_initializers))
290 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
293 #if __has_feature(is_base_of)
294 # define _LIBCPP_HAS_IS_BASE_OF
297 // Objective-C++ features (opt-in)
298 #if __has_feature(objc_arc)
299 #define _LIBCPP_HAS_OBJC_ARC
302 #if __has_feature(objc_arc_weak)
303 #define _LIBCPP_HAS_OBJC_ARC_WEAK
304 #define _LIBCPP_HAS_NO_STRONG_ENUMS
307 #if !(__has_feature(cxx_constexpr))
308 #define _LIBCPP_HAS_NO_CONSTEXPR
311 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
312 #if defined(__FreeBSD__)
313 #define _LIBCPP_HAS_QUICK_EXIT
314 #define _LIBCPP_HAS_C11_FEATURES
315 #elif defined(__linux__)
316 #include <features.h>
317 #if __GLIBC_PREREQ(2, 15)
318 #define _LIBCPP_HAS_QUICK_EXIT
320 #if __GLIBC_PREREQ(2, 17)
321 #define _LIBCPP_HAS_C11_FEATURES
326 #if (__has_feature(cxx_noexcept))
327 # define _NOEXCEPT noexcept
328 # define _NOEXCEPT_(x) noexcept(x)
330 # define _NOEXCEPT throw()
331 # define _NOEXCEPT_(x)
334 #if __has_feature(underlying_type)
335 # define _LIBCXX_UNDERLYING_TYPE(T) __underlying_type(T)
338 // Inline namespaces are available in Clang regardless of C++ dialect.
339 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
340 #define _LIBCPP_END_NAMESPACE_STD } }
341 #define _VSTD std::_LIBCPP_NAMESPACE
344 inline namespace _LIBCPP_NAMESPACE {
348 #elif defined(__GNUC__)
350 #define _ALIGNAS(x) __attribute__((__aligned__(x)))
351 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
353 #define _LIBCPP_NORETURN __attribute__((noreturn))
356 #define _LIBCPP_NO_EXCEPTIONS
359 #define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
360 #define _LIBCPP_HAS_NO_CONSTEXPR
362 #define _NOEXCEPT throw()
363 #define _NOEXCEPT_(x)
365 #ifndef __GXX_EXPERIMENTAL_CXX0X__
367 #define _LIBCPP_HAS_NO_ADVANCED_SFINAE
368 #define _LIBCPP_HAS_NO_DECLTYPE
369 #define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
370 #define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
371 #define _LIBCPP_HAS_NO_NULLPTR
372 #define _LIBCPP_HAS_NO_STATIC_ASSERT
373 #define _LIBCPP_HAS_NO_UNICODE_CHARS
374 #define _LIBCPP_HAS_NO_VARIADICS
375 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES
376 #define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
378 #else // __GXX_EXPERIMENTAL_CXX0X__
380 #define _LIBCPP_HAS_NO_TRAILING_RETURN
381 #define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
384 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES
388 #define _LIBCPP_HAS_NO_STATIC_ASSERT
392 #define _LIBCPP_HAS_NO_ADVANCED_SFINAE
393 #define _LIBCPP_HAS_NO_DECLTYPE
394 #define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
395 #define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
396 #define _LIBCPP_HAS_NO_UNICODE_CHARS
397 #define _LIBCPP_HAS_NO_VARIADICS
398 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
399 #endif // _GNUC_VER < 404
402 #define _LIBCPP_HAS_NO_NULLPTR
405 #endif // __GXX_EXPERIMENTAL_CXX0X__
407 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { namespace _LIBCPP_NAMESPACE {
408 #define _LIBCPP_END_NAMESPACE_STD } }
409 #define _VSTD std::_LIBCPP_NAMESPACE
412 namespace _LIBCPP_NAMESPACE {
414 using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
417 #elif defined(_LIBCPP_MSVC)
419 #define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
420 #define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
421 #define _LIBCPP_HAS_NO_CONSTEXPR
422 #define _LIBCPP_HAS_NO_UNICODE_CHARS
423 #define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
424 #define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
425 #define __alignof__ __alignof
426 #define _LIBCPP_NORETURN __declspec(noreturn)
427 #define _ALIGNAS(x) __declspec(align(x))
428 #define _LIBCPP_HAS_NO_VARIADICS
430 #define _NOEXCEPT throw()
431 #define _NOEXCEPT_(x)
433 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
434 #define _LIBCPP_END_NAMESPACE_STD }
437 # define _LIBCPP_WEAK
441 #elif defined(__IBMCPP__)
443 #define _ALIGNAS(x) __attribute__((__aligned__(x)))
444 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
445 #define _ATTRIBUTE(x) __attribute__((x))
446 #define _LIBCPP_NORETURN __attribute__((noreturn))
448 #define _NOEXCEPT throw()
449 #define _NOEXCEPT_(x)
451 #define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
452 #define _LIBCPP_HAS_NO_ADVANCED_SFINAE
453 #define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
454 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
455 #define _LIBCPP_HAS_NO_NULLPTR
456 #define _LIBCPP_HAS_NO_UNICODE_CHARS
457 #define _LIBCPP_HAS_NO_STRONG_ENUMS
458 #define _LIBCPP_HAS_IS_BASE_OF
461 #define __MULTILOCALE_API
464 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE {
465 #define _LIBCPP_END_NAMESPACE_STD } }
466 #define _VSTD std::_LIBCPP_NAMESPACE
469 inline namespace _LIBCPP_NAMESPACE {
473 #endif // __clang__ || __GNUC___ || _MSC_VER || __IBMCPP__
475 #ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
476 typedef unsigned short char16_t;
477 typedef unsigned int char32_t;
478 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS
480 #ifdef _LIBCPP_HAS_NO_STATIC_ASSERT
482 template <bool> struct __static_assert_test;
483 template <> struct __static_assert_test<true> {};
484 template <unsigned> struct __static_assert_check {};
485 #define static_assert(__b, __m) \
486 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \
487 _LIBCPP_CONCAT(__t, __LINE__)
489 #endif // _LIBCPP_HAS_NO_STATIC_ASSERT
491 #ifdef _LIBCPP_HAS_NO_DECLTYPE
492 #define decltype(x) __typeof__(x)
495 #ifdef _LIBCPP_HAS_NO_CONSTEXPR
496 #define _LIBCPP_CONSTEXPR
498 #define _LIBCPP_CONSTEXPR constexpr
501 #ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
502 #define _LIBCPP_DEFAULT {}
504 #define _LIBCPP_DEFAULT = default;
508 #define _NOALIAS __attribute__((__malloc__))
513 #ifndef __has_feature
514 #define __has_feature(__x) 0
517 #if __has_feature(cxx_explicit_conversions)
518 # define _LIBCPP_EXPLICIT explicit
520 # define _LIBCPP_EXPLICIT
523 #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
524 #define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx
525 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \
527 _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \
528 _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \
529 _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \
531 #else // _LIBCPP_HAS_NO_STRONG_ENUMS
532 #define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_TYPE_VIS x
533 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x)
534 #endif // _LIBCPP_HAS_NO_STRONG_ENUMS
537 # if _LIBCPP_DEBUG == 0
538 # define _LIBCPP_DEBUG_LEVEL 1
539 # elif _LIBCPP_DEBUG == 1
540 # define _LIBCPP_DEBUG_LEVEL 2
542 # error Supported values for _LIBCPP_DEBUG are 0 and 1
544 # define _LIBCPP_EXTERN_TEMPLATE(...)
547 #ifndef _LIBCPP_EXTERN_TEMPLATE
548 #define _LIBCPP_EXTERN_TEMPLATE(...)
551 #ifndef _LIBCPP_EXTERN_TEMPLATE2
552 #define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__;
555 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32) || defined(__sun__) || defined(__NetBSD__)
556 #define _LIBCPP_LOCALE__L_EXTENSIONS 1
559 #define _DECLARE_C99_LDBL_MATH 1
562 #if defined(__APPLE__) || defined(__FreeBSD__)
563 #define _LIBCPP_HAS_DEFAULTRUNELOCALE
566 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__)
567 #define _LIBCPP_WCTYPE_IS_MASK
570 #if defined(__APPLE__) || defined(__FreeBSD__)
571 #ifndef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR
572 # define _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 0
576 #ifndef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR
577 # define _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 1
580 #ifndef _LIBCPP_STD_VER
581 # if __cplusplus <= 201103L
582 # define _LIBCPP_STD_VER 11
584 # define _LIBCPP_STD_VER 13 // current year, or date of c++14 ratification
586 #endif // _LIBCPP_STD_VER
588 #if _LIBCPP_STD_VER > 11
589 #define _LIBCPP_DEPRECATED [[deprecated]]
591 #define _LIBCPP_DEPRECATED
594 #if _LIBCPP_STD_VER <= 11
595 #define _LIBCPP_CONSTEXPR_AFTER_CXX11
596 #define _LIBCPP_EXPLICIT_AFTER_CXX11
597 #define _LIBCPP_DEPRECATED_AFTER_CXX11
599 #define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr
600 #define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit
601 #define _LIBCPP_DEPRECATED_AFTER_CXX11 [[deprecated]]
604 // Try to find out if RTTI is disabled.
605 // g++ and cl.exe have RTTI on by default and define a macro when it is.
606 // g++ only defines the macro in 4.3.2 and onwards.
607 #if !defined(_LIBCPP_NO_RTTI)
608 # if defined(__GNUG__) && (__GNUC__ >= 4 && \
609 (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2)) && !defined(__GXX_RTTI)
610 # define _LIBCPP_NO_RTTI
611 # elif (defined(_MSC_VER) && !defined(__clang__)) && !defined(_CPPRTTI)
612 # define _LIBCPP_NO_RTTI
617 # define _LIBCPP_WEAK __attribute__((__weak__))
620 #endif // _LIBCPP_CONFIG