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 defined(_MSC_VER) && !defined(__clang__) 15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16 #define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 17 #endif 18 #endif 19 20 #ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER 21 #pragma GCC system_header 22 #endif 23 24 #ifdef __cplusplus 25 26 #ifdef __GNUC__ 27 #define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__) 28 // The _GNUC_VER_NEW macro better represents the new GCC versioning scheme 29 // introduced in GCC 5.0. 30 #define _GNUC_VER_NEW (_GNUC_VER * 10 + __GNUC_PATCHLEVEL__) 31 #else 32 #define _GNUC_VER 0 33 #define _GNUC_VER_NEW 0 34 #endif 35 36 #define _LIBCPP_VERSION 6000 37 38 #ifndef _LIBCPP_ABI_VERSION 39 #define _LIBCPP_ABI_VERSION 1 40 #endif 41 42 #if defined(__ELF__) 43 #define _LIBCPP_OBJECT_FORMAT_ELF 1 44 #elif defined(__MACH__) 45 #define _LIBCPP_OBJECT_FORMAT_MACHO 1 46 #elif defined(_WIN32) 47 #define _LIBCPP_OBJECT_FORMAT_COFF 1 48 #else 49 #error Unknown object file format 50 #endif 51 52 #if defined(_LIBCPP_ABI_UNSTABLE) || _LIBCPP_ABI_VERSION >= 2 53 // Change short string representation so that string data starts at offset 0, 54 // improving its alignment in some cases. 55 #define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 56 // Fix deque iterator type in order to support incomplete types. 57 #define _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 58 // Fix undefined behavior in how std::list stores it's linked nodes. 59 #define _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB 60 // Fix undefined behavior in how __tree stores its end and parent nodes. 61 #define _LIBCPP_ABI_TREE_REMOVE_NODE_POINTER_UB 62 // Fix undefined behavior in how __hash_table stores it's pointer types 63 #define _LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB 64 #define _LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB 65 #define _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE 66 // Don't use a nullptr_t simulation type in C++03 instead using C++11 nullptr 67 // provided under the alternate keyword __nullptr, which changes the mangling 68 // of nullptr_t. This option is ABI incompatible with GCC in C++03 mode. 69 #define _LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR 70 // Define the `pointer_safety` enum as a C++11 strongly typed enumeration 71 // instead of as a class simulating an enum. If this option is enabled 72 // `pointer_safety` and `get_pointer_safety()` will no longer be available 73 // in C++03. 74 #define _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE 75 // Define a key function for `bad_function_call` in the library, to centralize 76 // its vtable and typeinfo to libc++ rather than having all other libraries 77 // using that class define their own copies. 78 #define _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION 79 80 // Enable optimized version of __do_get_(un)signed which avoids redundant copies. 81 #define _LIBCPP_ABI_OPTIMIZED_LOCALE_NUM_GET 82 #elif _LIBCPP_ABI_VERSION == 1 83 #if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 84 // Enable compiling copies of now inline methods into the dylib to support 85 // applications compiled against older libraries. This is unnecessary with 86 // COFF dllexport semantics, since dllexport forces a non-inline definition 87 // of inline functions to be emitted anyway. Our own non-inline copy would 88 // conflict with the dllexport-emitted copy, so we disable it. 89 #define _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS 90 #endif 91 // Feature macros for disabling pre ABI v1 features. All of these options 92 // are deprecated. 93 #if defined(__FreeBSD__) 94 #define _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR 95 #endif 96 #endif 97 98 #ifdef _LIBCPP_TRIVIAL_PAIR_COPY_CTOR 99 #error "_LIBCPP_TRIVIAL_PAIR_COPY_CTOR" is no longer supported. \ 100 use _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR instead 101 #endif 102 103 #define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y 104 #define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) 105 106 #define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__ndk,_LIBCPP_ABI_VERSION) 107 108 #if __cplusplus < 201103L 109 #define _LIBCPP_CXX03_LANG 110 #endif 111 112 #ifndef __has_attribute 113 #define __has_attribute(__x) 0 114 #endif 115 #ifndef __has_builtin 116 #define __has_builtin(__x) 0 117 #endif 118 #ifndef __has_extension 119 #define __has_extension(__x) 0 120 #endif 121 #ifndef __has_feature 122 #define __has_feature(__x) 0 123 #endif 124 // '__is_identifier' returns '0' if '__x' is a reserved identifier provided by 125 // the compiler and '1' otherwise. 126 #ifndef __is_identifier 127 #define __is_identifier(__x) 1 128 #endif 129 #ifndef __has_declspec_attribute 130 #define __has_declspec_attribute(__x) 0 131 #endif 132 133 #define __has_keyword(__x) !(__is_identifier(__x)) 134 135 #ifdef __has_include 136 #define __libcpp_has_include(__x) __has_include(__x) 137 #else 138 #define __libcpp_has_include(__x) 0 139 #endif 140 141 #if defined(__clang__) 142 #define _LIBCPP_COMPILER_CLANG 143 # ifndef __apple_build_version__ 144 # define _LIBCPP_CLANG_VER (__clang_major__ * 100 + __clang_minor__) 145 # endif 146 #elif defined(__GNUC__) 147 #define _LIBCPP_COMPILER_GCC 148 #elif defined(_MSC_VER) 149 #define _LIBCPP_COMPILER_MSVC 150 #elif defined(__IBMCPP__) 151 #define _LIBCPP_COMPILER_IBM 152 #endif 153 154 #ifndef _LIBCPP_CLANG_VER 155 #define _LIBCPP_CLANG_VER 0 156 #endif 157 158 // FIXME: ABI detection should be done via compiler builtin macros. This 159 // is just a placeholder until Clang implements such macros. For now assume 160 // that Windows compilers pretending to be MSVC++ target the microsoft ABI. 161 #if defined(_WIN32) && defined(_MSC_VER) 162 # define _LIBCPP_ABI_MICROSOFT 163 #else 164 # define _LIBCPP_ABI_ITANIUM 165 #endif 166 167 // Need to detect which libc we're using if we're on Linux. 168 #if defined(__linux__) 169 #include <features.h> 170 #if !defined(__GLIBC_PREREQ) 171 #define __GLIBC_PREREQ(a, b) 0 172 #endif // !defined(__GLIBC_PREREQ) 173 #endif // defined(__linux__) 174 175 #ifdef __LITTLE_ENDIAN__ 176 #if __LITTLE_ENDIAN__ 177 #define _LIBCPP_LITTLE_ENDIAN 1 178 #define _LIBCPP_BIG_ENDIAN 0 179 #endif // __LITTLE_ENDIAN__ 180 #endif // __LITTLE_ENDIAN__ 181 182 #ifdef __BIG_ENDIAN__ 183 #if __BIG_ENDIAN__ 184 #define _LIBCPP_LITTLE_ENDIAN 0 185 #define _LIBCPP_BIG_ENDIAN 1 186 #endif // __BIG_ENDIAN__ 187 #endif // __BIG_ENDIAN__ 188 189 #ifdef __BYTE_ORDER__ 190 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 191 #define _LIBCPP_LITTLE_ENDIAN 1 192 #define _LIBCPP_BIG_ENDIAN 0 193 #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 194 #define _LIBCPP_LITTLE_ENDIAN 0 195 #define _LIBCPP_BIG_ENDIAN 1 196 #endif // __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 197 #endif // __BYTE_ORDER__ 198 199 #ifdef __FreeBSD__ 200 # include <sys/endian.h> 201 # if _BYTE_ORDER == _LITTLE_ENDIAN 202 # define _LIBCPP_LITTLE_ENDIAN 1 203 # define _LIBCPP_BIG_ENDIAN 0 204 # else // _BYTE_ORDER == _LITTLE_ENDIAN 205 # define _LIBCPP_LITTLE_ENDIAN 0 206 # define _LIBCPP_BIG_ENDIAN 1 207 # endif // _BYTE_ORDER == _LITTLE_ENDIAN 208 # ifndef __LONG_LONG_SUPPORTED 209 # define _LIBCPP_HAS_NO_LONG_LONG 210 # endif // __LONG_LONG_SUPPORTED 211 #endif // __FreeBSD__ 212 213 #ifdef __NetBSD__ 214 # include <sys/endian.h> 215 # if _BYTE_ORDER == _LITTLE_ENDIAN 216 # define _LIBCPP_LITTLE_ENDIAN 1 217 # define _LIBCPP_BIG_ENDIAN 0 218 # else // _BYTE_ORDER == _LITTLE_ENDIAN 219 # define _LIBCPP_LITTLE_ENDIAN 0 220 # define _LIBCPP_BIG_ENDIAN 1 221 # endif // _BYTE_ORDER == _LITTLE_ENDIAN 222 # define _LIBCPP_HAS_QUICK_EXIT 223 #endif // __NetBSD__ 224 225 #if defined(_WIN32) 226 # define _LIBCPP_WIN32API 227 # define _LIBCPP_LITTLE_ENDIAN 1 228 # define _LIBCPP_BIG_ENDIAN 0 229 # define _LIBCPP_SHORT_WCHAR 1 230 // Both MinGW and native MSVC provide a "MSVC"-like enviroment 231 # define _LIBCPP_MSVCRT_LIKE 232 // If mingw not explicitly detected, assume using MS C runtime only if 233 // a MS compatibility version is specified. 234 # if defined(_MSC_VER) && !defined(__MINGW32__) 235 # define _LIBCPP_MSVCRT // Using Microsoft's C Runtime library 236 # endif 237 # if (defined(_M_AMD64) || defined(__x86_64__)) || (defined(_M_ARM) || defined(__arm__)) 238 # define _LIBCPP_HAS_BITSCAN64 239 # endif 240 # if defined(_LIBCPP_MSVCRT) 241 # define _LIBCPP_HAS_QUICK_EXIT 242 # endif 243 244 // Some CRT APIs are unavailable to store apps 245 #if defined(WINAPI_FAMILY) 246 #include <winapifamily.h> 247 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && \ 248 (!defined(WINAPI_PARTITION_SYSTEM) || \ 249 !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_SYSTEM)) 250 #define _LIBCPP_WINDOWS_STORE_APP 251 #endif 252 #endif 253 #endif // defined(_WIN32) 254 255 #ifdef __sun__ 256 # include <sys/isa_defs.h> 257 # ifdef _LITTLE_ENDIAN 258 # define _LIBCPP_LITTLE_ENDIAN 1 259 # define _LIBCPP_BIG_ENDIAN 0 260 # else 261 # define _LIBCPP_LITTLE_ENDIAN 0 262 # define _LIBCPP_BIG_ENDIAN 1 263 # endif 264 #endif // __sun__ 265 266 #if defined(__CloudABI__) 267 // Certain architectures provide arc4random(). Prefer using 268 // arc4random() over /dev/{u,}random to make it possible to obtain 269 // random data even when using sandboxing mechanisms such as chroots, 270 // Capsicum, etc. 271 # define _LIBCPP_USING_ARC4_RANDOM 272 #elif defined(__native_client__) 273 // NaCl's sandbox (which PNaCl also runs in) doesn't allow filesystem access, 274 // including accesses to the special files under /dev. C++11's 275 // std::random_device is instead exposed through a NaCl syscall. 276 # define _LIBCPP_USING_NACL_RANDOM 277 #elif defined(_LIBCPP_WIN32API) 278 # define _LIBCPP_USING_WIN32_RANDOM 279 #else 280 # define _LIBCPP_USING_DEV_RANDOM 281 #endif 282 283 #if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN) 284 # include <endian.h> 285 # if __BYTE_ORDER == __LITTLE_ENDIAN 286 # define _LIBCPP_LITTLE_ENDIAN 1 287 # define _LIBCPP_BIG_ENDIAN 0 288 # elif __BYTE_ORDER == __BIG_ENDIAN 289 # define _LIBCPP_LITTLE_ENDIAN 0 290 # define _LIBCPP_BIG_ENDIAN 1 291 # else // __BYTE_ORDER == __BIG_ENDIAN 292 # error unable to determine endian 293 # endif 294 #endif // !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN) 295 296 #if __has_attribute(__no_sanitize__) && !defined(_LIBCPP_COMPILER_GCC) 297 #define _LIBCPP_NO_CFI __attribute__((__no_sanitize__("cfi"))) 298 #else 299 #define _LIBCPP_NO_CFI 300 #endif 301 302 #if defined(_LIBCPP_COMPILER_CLANG) 303 304 // _LIBCPP_ALTERNATE_STRING_LAYOUT is an old name for 305 // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT left here for backward compatibility. 306 #if (defined(__APPLE__) && !defined(__i386__) && !defined(__x86_64__) && \ 307 (!defined(__arm__) || __ARM_ARCH_7K__ >= 2)) || \ 308 defined(_LIBCPP_ALTERNATE_STRING_LAYOUT) 309 #define _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT 310 #endif 311 312 #if __has_feature(cxx_alignas) 313 # define _ALIGNAS_TYPE(x) alignas(x) 314 # define _ALIGNAS(x) alignas(x) 315 #else 316 # define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 317 # define _ALIGNAS(x) __attribute__((__aligned__(x))) 318 #endif 319 320 #if __cplusplus < 201103L 321 typedef __char16_t char16_t; 322 typedef __char32_t char32_t; 323 #endif 324 325 #if !(__has_feature(cxx_exceptions)) && !defined(_LIBCPP_NO_EXCEPTIONS) 326 #define _LIBCPP_NO_EXCEPTIONS 327 #endif 328 329 #if !(__has_feature(cxx_rtti)) && !defined(_LIBCPP_NO_RTTI) 330 #define _LIBCPP_NO_RTTI 331 #endif 332 333 #if !(__has_feature(cxx_strong_enums)) 334 #define _LIBCPP_HAS_NO_STRONG_ENUMS 335 #endif 336 337 #if !(__has_feature(cxx_decltype)) 338 #define _LIBCPP_HAS_NO_DECLTYPE 339 #endif 340 341 #if __has_feature(cxx_attributes) 342 # define _LIBCPP_NORETURN [[noreturn]] 343 #else 344 # define _LIBCPP_NORETURN __attribute__ ((noreturn)) 345 #endif 346 347 #if !(__has_feature(cxx_lambdas)) 348 #define _LIBCPP_HAS_NO_LAMBDAS 349 #endif 350 351 #if !(__has_feature(cxx_nullptr)) 352 # if (__has_extension(cxx_nullptr) || __has_keyword(__nullptr)) && defined(_LIBCPP_ABI_ALWAYS_USE_CXX11_NULLPTR) 353 # define nullptr __nullptr 354 # else 355 # define _LIBCPP_HAS_NO_NULLPTR 356 # endif 357 #endif 358 359 #if !(__has_feature(cxx_rvalue_references)) 360 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 361 #endif 362 363 #if !(__has_feature(cxx_auto_type)) 364 #define _LIBCPP_HAS_NO_AUTO_TYPE 365 #endif 366 367 #if !(__has_feature(cxx_variadic_templates)) 368 #define _LIBCPP_HAS_NO_VARIADICS 369 #endif 370 371 #if !(__has_feature(cxx_generalized_initializers)) 372 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 373 #endif 374 375 #if __has_feature(is_base_of) 376 # define _LIBCPP_HAS_IS_BASE_OF 377 #endif 378 379 #if __has_feature(is_final) 380 # define _LIBCPP_HAS_IS_FINAL 381 #endif 382 383 // Objective-C++ features (opt-in) 384 #if __has_feature(objc_arc) 385 #define _LIBCPP_HAS_OBJC_ARC 386 #endif 387 388 #if __has_feature(objc_arc_weak) 389 #define _LIBCPP_HAS_OBJC_ARC_WEAK 390 #endif 391 392 #if !(__has_feature(cxx_constexpr)) 393 #define _LIBCPP_HAS_NO_CONSTEXPR 394 #endif 395 396 #if !(__has_feature(cxx_relaxed_constexpr)) 397 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 398 #endif 399 400 #if !(__has_feature(cxx_variable_templates)) 401 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 402 #endif 403 404 #if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L 405 #if defined(__FreeBSD__) 406 #define _LIBCPP_HAS_QUICK_EXIT 407 #define _LIBCPP_HAS_C11_FEATURES 408 #elif defined(__Fuchsia__) 409 #define _LIBCPP_HAS_QUICK_EXIT 410 #define _LIBCPP_HAS_C11_FEATURES 411 #elif defined(__linux__) 412 #if !defined(_LIBCPP_HAS_MUSL_LIBC) 413 #if __GLIBC_PREREQ(2, 15) || defined(__BIONIC__) 414 #define _LIBCPP_HAS_QUICK_EXIT 415 #endif 416 #if __GLIBC_PREREQ(2, 17) 417 #define _LIBCPP_HAS_C11_FEATURES 418 #endif 419 #else // defined(_LIBCPP_HAS_MUSL_LIBC) 420 #define _LIBCPP_HAS_QUICK_EXIT 421 #define _LIBCPP_HAS_C11_FEATURES 422 #endif 423 #endif // __linux__ 424 #endif 425 426 #if !(__has_feature(cxx_noexcept)) 427 #define _LIBCPP_HAS_NO_NOEXCEPT 428 #endif 429 430 #if __has_feature(underlying_type) 431 # define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 432 #endif 433 434 #if __has_feature(is_literal) 435 # define _LIBCPP_IS_LITERAL(T) __is_literal(T) 436 #endif 437 438 // Inline namespaces are available in Clang regardless of C++ dialect. 439 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 440 #define _LIBCPP_END_NAMESPACE_STD } } 441 #define _VSTD std::_LIBCPP_NAMESPACE 442 443 namespace std { 444 inline namespace _LIBCPP_NAMESPACE { 445 } 446 } 447 448 #if !defined(_LIBCPP_HAS_NO_ASAN) && !__has_feature(address_sanitizer) 449 #define _LIBCPP_HAS_NO_ASAN 450 #endif 451 452 // Allow for build-time disabling of unsigned integer sanitization 453 #if !defined(_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK) && __has_attribute(no_sanitize) 454 #define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK __attribute__((__no_sanitize__("unsigned-integer-overflow"))) 455 #endif 456 457 #elif defined(_LIBCPP_COMPILER_GCC) 458 459 #define _ALIGNAS(x) __attribute__((__aligned__(x))) 460 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 461 462 #define _LIBCPP_NORETURN __attribute__((noreturn)) 463 464 #if _GNUC_VER >= 407 465 #define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T) 466 #define _LIBCPP_IS_LITERAL(T) __is_literal_type(T) 467 #define _LIBCPP_HAS_IS_FINAL 468 #endif 469 470 #if defined(__GNUC__) && _GNUC_VER >= 403 471 # define _LIBCPP_HAS_IS_BASE_OF 472 #endif 473 474 #if !__EXCEPTIONS 475 #define _LIBCPP_NO_EXCEPTIONS 476 #endif 477 478 // constexpr was added to GCC in 4.6. 479 #if _GNUC_VER < 406 480 #define _LIBCPP_HAS_NO_CONSTEXPR 481 // Can only use constexpr in c++11 mode. 482 #elif !defined(__GXX_EXPERIMENTAL_CXX0X__) && __cplusplus < 201103L 483 #define _LIBCPP_HAS_NO_CONSTEXPR 484 #endif 485 486 // Determine if GCC supports relaxed constexpr 487 #if !defined(__cpp_constexpr) || __cpp_constexpr < 201304L 488 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 489 #endif 490 491 // GCC 5 will support variable templates 492 #if !defined(__cpp_variable_templates) || __cpp_variable_templates < 201304L 493 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 494 #endif 495 496 #ifndef __GXX_EXPERIMENTAL_CXX0X__ 497 #define _LIBCPP_HAS_NO_DECLTYPE 498 #define _LIBCPP_HAS_NO_NULLPTR 499 #define _LIBCPP_HAS_NO_UNICODE_CHARS 500 #define _LIBCPP_HAS_NO_VARIADICS 501 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 502 #define _LIBCPP_HAS_NO_STRONG_ENUMS 503 #define _LIBCPP_HAS_NO_NOEXCEPT 504 505 #else // __GXX_EXPERIMENTAL_CXX0X__ 506 507 #if _GNUC_VER < 403 508 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES 509 #endif 510 511 512 #if _GNUC_VER < 404 513 #define _LIBCPP_HAS_NO_DECLTYPE 514 #define _LIBCPP_HAS_NO_UNICODE_CHARS 515 #define _LIBCPP_HAS_NO_VARIADICS 516 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 517 #endif // _GNUC_VER < 404 518 519 #if _GNUC_VER < 406 520 #define _LIBCPP_HAS_NO_NOEXCEPT 521 #define _LIBCPP_HAS_NO_NULLPTR 522 #endif 523 524 #endif // __GXX_EXPERIMENTAL_CXX0X__ 525 526 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_NAMESPACE { 527 #define _LIBCPP_END_NAMESPACE_STD } } 528 #define _VSTD std::_LIBCPP_NAMESPACE 529 530 namespace std { 531 inline namespace _LIBCPP_NAMESPACE { 532 } 533 } 534 535 #if !defined(_LIBCPP_HAS_NO_ASAN) && !defined(__SANITIZE_ADDRESS__) 536 #define _LIBCPP_HAS_NO_ASAN 537 #endif 538 539 #elif defined(_LIBCPP_COMPILER_MSVC) 540 541 #define _LIBCPP_TOSTRING2(x) #x 542 #define _LIBCPP_TOSTRING(x) _LIBCPP_TOSTRING2(x) 543 #define _LIBCPP_WARNING(x) __pragma(message(__FILE__ "(" _LIBCPP_TOSTRING(__LINE__) ") : warning note: " x)) 544 545 #if _MSC_VER < 1900 546 #error "MSVC versions prior to Visual Studio 2015 are not supported" 547 #endif 548 549 #define _LIBCPP_HAS_IS_BASE_OF 550 #define _LIBCPP_HAS_NO_CONSTEXPR 551 #define _LIBCPP_HAS_NO_CXX14_CONSTEXPR 552 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 553 #if _MSC_VER <= 1800 554 #define _LIBCPP_HAS_NO_UNICODE_CHARS 555 #endif 556 #define _LIBCPP_HAS_NO_NOEXCEPT 557 #define __alignof__ __alignof 558 #define _LIBCPP_NORETURN __declspec(noreturn) 559 #define _ALIGNAS(x) __declspec(align(x)) 560 #define _LIBCPP_HAS_NO_VARIADICS 561 562 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { 563 #define _LIBCPP_END_NAMESPACE_STD } 564 #define _VSTD std 565 566 # define _LIBCPP_WEAK 567 namespace std { 568 } 569 570 #define _LIBCPP_HAS_NO_ASAN 571 572 #elif defined(_LIBCPP_COMPILER_IBM) 573 574 #define _ALIGNAS(x) __attribute__((__aligned__(x))) 575 #define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x)))) 576 #define _ATTRIBUTE(x) __attribute__((x)) 577 #define _LIBCPP_NORETURN __attribute__((noreturn)) 578 579 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 580 #define _LIBCPP_HAS_NO_NOEXCEPT 581 #define _LIBCPP_HAS_NO_NULLPTR 582 #define _LIBCPP_HAS_NO_UNICODE_CHARS 583 #define _LIBCPP_HAS_IS_BASE_OF 584 #define _LIBCPP_HAS_IS_FINAL 585 #define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES 586 587 #if defined(_AIX) 588 #define __MULTILOCALE_API 589 #endif 590 591 #define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline namespace _LIBCPP_NAMESPACE { 592 #define _LIBCPP_END_NAMESPACE_STD } } 593 #define _VSTD std::_LIBCPP_NAMESPACE 594 595 namespace std { 596 inline namespace _LIBCPP_NAMESPACE { 597 } 598 } 599 600 #define _LIBCPP_HAS_NO_ASAN 601 602 #endif // _LIBCPP_COMPILER_[CLANG|GCC|MSVC|IBM] 603 604 #if defined(_LIBCPP_OBJECT_FORMAT_COFF) 605 #if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 606 # define _LIBCPP_DLL_VIS 607 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 608 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 609 # define _LIBCPP_OVERRIDABLE_FUNC_VIS 610 #elif defined(_LIBCPP_BUILDING_LIBRARY) 611 # define _LIBCPP_DLL_VIS __declspec(dllexport) 612 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 613 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS _LIBCPP_DLL_VIS 614 # define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_DLL_VIS 615 #else 616 # define _LIBCPP_DLL_VIS __declspec(dllimport) 617 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS _LIBCPP_DLL_VIS 618 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 619 # define _LIBCPP_OVERRIDABLE_FUNC_VIS 620 #endif 621 622 #define _LIBCPP_TYPE_VIS _LIBCPP_DLL_VIS 623 #define _LIBCPP_FUNC_VIS _LIBCPP_DLL_VIS 624 #define _LIBCPP_EXTERN_VIS _LIBCPP_DLL_VIS 625 #define _LIBCPP_EXCEPTION_ABI _LIBCPP_DLL_VIS 626 #define _LIBCPP_HIDDEN 627 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 628 #define _LIBCPP_TEMPLATE_VIS 629 #define _LIBCPP_ENUM_VIS 630 631 #if defined(_LIBCPP_COMPILER_MSVC) 632 # define _LIBCPP_INLINE_VISIBILITY __forceinline 633 # define _LIBCPP_ALWAYS_INLINE __forceinline 634 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __forceinline 635 #else 636 # define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 637 # define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 638 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 639 #endif 640 #endif // defined(_LIBCPP_OBJECT_FORMAT_COFF) 641 642 #ifndef _LIBCPP_HIDDEN 643 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 644 #define _LIBCPP_HIDDEN __attribute__ ((__visibility__("hidden"))) 645 #else 646 #define _LIBCPP_HIDDEN 647 #endif 648 #endif 649 650 #ifndef _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 651 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 652 // The inline should be removed once PR32114 is resolved 653 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS inline _LIBCPP_HIDDEN 654 #else 655 #define _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 656 #endif 657 #endif 658 659 #ifndef _LIBCPP_FUNC_VIS 660 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 661 #define _LIBCPP_FUNC_VIS __attribute__ ((__visibility__("default"))) 662 #else 663 #define _LIBCPP_FUNC_VIS 664 #endif 665 #endif 666 667 #ifndef _LIBCPP_TYPE_VIS 668 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 669 # define _LIBCPP_TYPE_VIS __attribute__ ((__visibility__("default"))) 670 # else 671 # define _LIBCPP_TYPE_VIS 672 # endif 673 #endif 674 675 #ifndef _LIBCPP_TEMPLATE_VIS 676 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 677 # if __has_attribute(__type_visibility__) 678 # define _LIBCPP_TEMPLATE_VIS __attribute__ ((__type_visibility__("default"))) 679 # else 680 # define _LIBCPP_TEMPLATE_VIS __attribute__ ((__visibility__("default"))) 681 # endif 682 # else 683 # define _LIBCPP_TEMPLATE_VIS 684 # endif 685 #endif 686 687 #ifndef _LIBCPP_EXTERN_VIS 688 # define _LIBCPP_EXTERN_VIS 689 #endif 690 691 #ifndef _LIBCPP_OVERRIDABLE_FUNC_VIS 692 # define _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_FUNC_VIS 693 #endif 694 695 #ifndef _LIBCPP_EXCEPTION_ABI 696 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 697 #define _LIBCPP_EXCEPTION_ABI __attribute__ ((__visibility__("default"))) 698 #else 699 #define _LIBCPP_EXCEPTION_ABI 700 #endif 701 #endif 702 703 #ifndef _LIBCPP_ENUM_VIS 704 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 705 # define _LIBCPP_ENUM_VIS __attribute__ ((__type_visibility__("default"))) 706 # else 707 # define _LIBCPP_ENUM_VIS 708 # endif 709 #endif 710 711 #ifndef _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 712 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) && __has_attribute(__type_visibility__) 713 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS __attribute__ ((__visibility__("default"))) 714 # else 715 # define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS 716 # endif 717 #endif 718 719 #ifndef _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 720 # define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS 721 #endif 722 723 #ifndef _LIBCPP_INLINE_VISIBILITY 724 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 725 #define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__visibility__("hidden"), __always_inline__)) 726 #else 727 #define _LIBCPP_INLINE_VISIBILITY __attribute__ ((__always_inline__)) 728 #endif 729 #endif 730 731 #ifndef _LIBCPP_ALWAYS_INLINE 732 #if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 733 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__visibility__("hidden"), __always_inline__)) 734 #else 735 #define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__)) 736 #endif 737 #endif 738 739 #ifndef _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY 740 # if !defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) 741 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__visibility__("default"), __always_inline__)) 742 # else 743 # define _LIBCPP_EXTERN_TEMPLATE_INLINE_VISIBILITY __attribute__((__always_inline__)) 744 # endif 745 #endif 746 747 #ifndef _LIBCPP_PREFERRED_OVERLOAD 748 # if __has_attribute(__enable_if__) 749 # define _LIBCPP_PREFERRED_OVERLOAD __attribute__ ((__enable_if__(true, ""))) 750 # endif 751 #endif 752 753 #ifndef _LIBCPP_HAS_NO_NOEXCEPT 754 # define _NOEXCEPT noexcept 755 # define _NOEXCEPT_(x) noexcept(x) 756 #else 757 # define _NOEXCEPT throw() 758 # define _NOEXCEPT_(x) 759 #endif 760 761 #if defined(_LIBCPP_DEBUG_USE_EXCEPTIONS) 762 # if !defined(_LIBCPP_DEBUG) 763 # error cannot use _LIBCPP_DEBUG_USE_EXCEPTIONS unless _LIBCPP_DEBUG is defined 764 # endif 765 # define _NOEXCEPT_DEBUG noexcept(false) 766 # define _NOEXCEPT_DEBUG_(x) noexcept(false) 767 #else 768 # define _NOEXCEPT_DEBUG _NOEXCEPT 769 # define _NOEXCEPT_DEBUG_(x) _NOEXCEPT_(x) 770 #endif 771 772 #ifdef _LIBCPP_HAS_NO_UNICODE_CHARS 773 typedef unsigned short char16_t; 774 typedef unsigned int char32_t; 775 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS 776 777 #ifndef __SIZEOF_INT128__ 778 #define _LIBCPP_HAS_NO_INT128 779 #endif 780 781 #ifdef _LIBCPP_CXX03_LANG 782 # if __has_extension(c_static_assert) 783 # define static_assert(__b, __m) _Static_assert(__b, __m) 784 # else 785 extern "C++" { 786 template <bool> struct __static_assert_test; 787 template <> struct __static_assert_test<true> {}; 788 template <unsigned> struct __static_assert_check {}; 789 } 790 #define static_assert(__b, __m) \ 791 typedef __static_assert_check<sizeof(__static_assert_test<(__b)>)> \ 792 _LIBCPP_CONCAT(__t, __LINE__) 793 # endif // __has_extension(c_static_assert) 794 #endif // _LIBCPP_CXX03_LANG 795 796 #ifdef _LIBCPP_HAS_NO_DECLTYPE 797 // GCC 4.6 provides __decltype in all standard modes. 798 #if __has_keyword(__decltype) || _LIBCPP_CLANG_VER >= 304 || _GNUC_VER >= 406 799 # define decltype(__x) __decltype(__x) 800 #else 801 # define decltype(__x) __typeof__(__x) 802 #endif 803 #endif 804 805 #ifdef _LIBCPP_HAS_NO_CONSTEXPR 806 #define _LIBCPP_CONSTEXPR 807 #else 808 #define _LIBCPP_CONSTEXPR constexpr 809 #endif 810 811 #ifdef _LIBCPP_CXX03_LANG 812 #define _LIBCPP_DEFAULT {} 813 #else 814 #define _LIBCPP_DEFAULT = default; 815 #endif 816 817 #ifdef _LIBCPP_CXX03_LANG 818 #define _LIBCPP_EQUAL_DELETE 819 #else 820 #define _LIBCPP_EQUAL_DELETE = delete 821 #endif 822 823 #ifdef __GNUC__ 824 #define _NOALIAS __attribute__((__malloc__)) 825 #else 826 #define _NOALIAS 827 #endif 828 829 #if __has_feature(cxx_explicit_conversions) || defined(__IBMCPP__) || \ 830 (!defined(_LIBCPP_CXX03_LANG) && defined(__GNUC__)) // All supported GCC versions 831 # define _LIBCPP_EXPLICIT explicit 832 #else 833 # define _LIBCPP_EXPLICIT 834 #endif 835 836 #if !__has_builtin(__builtin_operator_new) || !__has_builtin(__builtin_operator_delete) 837 # define _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE 838 #endif 839 840 #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS 841 #define _LIBCPP_DECLARE_STRONG_ENUM(x) struct _LIBCPP_TYPE_VIS x { enum __lx 842 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \ 843 __lx __v_; \ 844 _LIBCPP_ALWAYS_INLINE x(__lx __v) : __v_(__v) {} \ 845 _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<__lx>(__v)) {} \ 846 _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \ 847 }; 848 #else // _LIBCPP_HAS_NO_STRONG_ENUMS 849 #define _LIBCPP_DECLARE_STRONG_ENUM(x) enum class _LIBCPP_ENUM_VIS x 850 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) 851 #endif // _LIBCPP_HAS_NO_STRONG_ENUMS 852 853 #ifdef _LIBCPP_DEBUG 854 # if _LIBCPP_DEBUG == 0 855 # define _LIBCPP_DEBUG_LEVEL 1 856 # elif _LIBCPP_DEBUG == 1 857 # define _LIBCPP_DEBUG_LEVEL 2 858 # else 859 # error Supported values for _LIBCPP_DEBUG are 0 and 1 860 # endif 861 # if !defined(_LIBCPP_BUILDING_LIBRARY) 862 # define _LIBCPP_EXTERN_TEMPLATE(...) 863 # endif 864 #endif 865 866 #ifdef _LIBCPP_DISABLE_EXTERN_TEMPLATE 867 #define _LIBCPP_EXTERN_TEMPLATE(...) 868 #define _LIBCPP_EXTERN_TEMPLATE2(...) 869 #endif 870 871 #ifndef _LIBCPP_EXTERN_TEMPLATE 872 #define _LIBCPP_EXTERN_TEMPLATE(...) 873 #endif 874 875 #ifndef _LIBCPP_EXTERN_TEMPLATE2 876 #define _LIBCPP_EXTERN_TEMPLATE2(...) extern template __VA_ARGS__; 877 #endif 878 879 #if defined(__APPLE__) && defined(__LP64__) && !defined(__x86_64__) 880 #define _LIBCPP_NONUNIQUE_RTTI_BIT (1ULL << 63) 881 #endif 882 883 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(_LIBCPP_MSVCRT) || \ 884 defined(__sun__) || defined(__NetBSD__) || defined(__CloudABI__) 885 #define _LIBCPP_LOCALE__L_EXTENSIONS 1 886 #endif 887 888 #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) 889 // Most unix variants have catopen. These are the specific ones that don't. 890 #if !defined(__BIONIC__) && !defined(_NEWLIB_VERSION) 891 #define _LIBCPP_HAS_CATOPEN 1 892 #endif 893 #endif 894 895 #ifdef __FreeBSD__ 896 #define _DECLARE_C99_LDBL_MATH 1 897 #endif 898 899 #if defined(__APPLE__) 900 # if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \ 901 defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 902 # define __MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 903 # endif 904 # if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) 905 # if __MAC_OS_X_VERSION_MIN_REQUIRED < 1060 906 # define _LIBCPP_HAS_NO_ALIGNED_ALLOCATION 907 # endif 908 # endif 909 #endif // defined(__APPLE__) 910 911 #if defined(__APPLE__) || defined(__FreeBSD__) 912 #define _LIBCPP_HAS_DEFAULTRUNELOCALE 913 #endif 914 915 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__sun__) 916 #define _LIBCPP_WCTYPE_IS_MASK 917 #endif 918 919 #ifndef _LIBCPP_STD_VER 920 # if __cplusplus <= 201103L 921 # define _LIBCPP_STD_VER 11 922 # elif __cplusplus <= 201402L 923 # define _LIBCPP_STD_VER 14 924 # elif __cplusplus <= 201703L 925 # define _LIBCPP_STD_VER 17 926 # else 927 # define _LIBCPP_STD_VER 18 // current year, or date of c++2a ratification 928 # endif 929 #endif // _LIBCPP_STD_VER 930 931 #if _LIBCPP_STD_VER > 11 932 #define _LIBCPP_DEPRECATED [[deprecated]] 933 #else 934 #define _LIBCPP_DEPRECATED 935 #endif 936 937 #if _LIBCPP_STD_VER <= 11 938 #define _LIBCPP_EXPLICIT_AFTER_CXX11 939 #define _LIBCPP_DEPRECATED_AFTER_CXX11 940 #else 941 #define _LIBCPP_EXPLICIT_AFTER_CXX11 explicit 942 #define _LIBCPP_DEPRECATED_AFTER_CXX11 [[deprecated]] 943 #endif 944 945 #if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 946 #define _LIBCPP_CONSTEXPR_AFTER_CXX11 constexpr 947 #else 948 #define _LIBCPP_CONSTEXPR_AFTER_CXX11 949 #endif 950 951 #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR) 952 #define _LIBCPP_CONSTEXPR_AFTER_CXX14 constexpr 953 #else 954 #define _LIBCPP_CONSTEXPR_AFTER_CXX14 955 #endif 956 957 // FIXME: Remove all usages of this macro once compilers catch up. 958 #if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606L) 959 # define _LIBCPP_HAS_NO_INLINE_VARIABLES 960 #endif 961 962 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 963 # define _LIBCPP_EXPLICIT_MOVE(x) _VSTD::move(x) 964 #else 965 # define _LIBCPP_EXPLICIT_MOVE(x) (x) 966 #endif 967 968 #ifndef _LIBCPP_HAS_NO_ASAN 969 _LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( 970 const void *, const void *, const void *, const void *); 971 #endif 972 973 // Try to find out if RTTI is disabled. 974 // g++ and cl.exe have RTTI on by default and define a macro when it is. 975 // g++ only defines the macro in 4.3.2 and onwards. 976 #if !defined(_LIBCPP_NO_RTTI) 977 # if defined(__GNUC__) && ((__GNUC__ >= 5) || (__GNUC__ == 4 && \ 978 (__GNUC_MINOR__ >= 3 || __GNUC_PATCHLEVEL__ >= 2))) && !defined(__GXX_RTTI) 979 # define _LIBCPP_NO_RTTI 980 # elif defined(_LIBCPP_COMPILER_MSVC) && !defined(_CPPRTTI) 981 # define _LIBCPP_NO_RTTI 982 # endif 983 #endif 984 985 #ifndef _LIBCPP_WEAK 986 # define _LIBCPP_WEAK __attribute__((__weak__)) 987 #endif 988 989 // Thread API 990 #if !defined(_LIBCPP_HAS_NO_THREADS) && \ 991 !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && \ 992 !defined(_LIBCPP_HAS_THREAD_API_WIN32) && \ 993 !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 994 # if defined(__FreeBSD__) || \ 995 defined(__Fuchsia__) || \ 996 defined(__NetBSD__) || \ 997 defined(__linux__) || \ 998 defined(__APPLE__) || \ 999 defined(__CloudABI__) || \ 1000 defined(__sun__) || \ 1001 (defined(__MINGW32__) && __libcpp_has_include(<pthread.h>)) 1002 # define _LIBCPP_HAS_THREAD_API_PTHREAD 1003 # elif defined(_LIBCPP_WIN32API) 1004 # define _LIBCPP_HAS_THREAD_API_WIN32 1005 # else 1006 # error "No thread API" 1007 # endif // _LIBCPP_HAS_THREAD_API 1008 #endif // _LIBCPP_HAS_NO_THREADS 1009 1010 #if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD) 1011 # error _LIBCPP_HAS_THREAD_API_PTHREAD may only be defined when \ 1012 _LIBCPP_HAS_NO_THREADS is not defined. 1013 #endif 1014 1015 #if defined(_LIBCPP_HAS_NO_THREADS) && defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) 1016 # error _LIBCPP_HAS_THREAD_API_EXTERNAL may not be defined when \ 1017 _LIBCPP_HAS_NO_THREADS is defined. 1018 #endif 1019 1020 #if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK) && !defined(_LIBCPP_HAS_NO_THREADS) 1021 # error _LIBCPP_HAS_NO_MONOTONIC_CLOCK may only be defined when \ 1022 _LIBCPP_HAS_NO_THREADS is defined. 1023 #endif 1024 1025 // Systems that use capability-based security (FreeBSD with Capsicum, 1026 // Nuxi CloudABI) may only provide local filesystem access (using *at()). 1027 // Functions like open(), rename(), unlink() and stat() should not be 1028 // used, as they attempt to access the global filesystem namespace. 1029 #ifdef __CloudABI__ 1030 #define _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1031 #endif 1032 1033 // CloudABI is intended for running networked services. Processes do not 1034 // have standard input and output channels. 1035 #ifdef __CloudABI__ 1036 #define _LIBCPP_HAS_NO_STDIN 1037 #define _LIBCPP_HAS_NO_STDOUT 1038 #endif 1039 1040 #if defined(__BIONIC__) || defined(__CloudABI__) || \ 1041 defined(__Fuchsia__) || defined(_LIBCPP_HAS_MUSL_LIBC) 1042 #define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE 1043 #endif 1044 1045 // Thread-unsafe functions such as strtok() and localtime() 1046 // are not available. 1047 #ifdef __CloudABI__ 1048 #define _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 1049 #endif 1050 1051 #if __has_feature(cxx_atomic) || __has_extension(c_atomic) || __has_keyword(_Atomic) 1052 #define _LIBCPP_HAS_C_ATOMIC_IMP 1053 #elif _GNUC_VER > 407 1054 #define _LIBCPP_HAS_GCC_ATOMIC_IMP 1055 #endif 1056 1057 #if (!defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)) \ 1058 || defined(_LIBCPP_HAS_NO_THREADS) 1059 #define _LIBCPP_HAS_NO_ATOMIC_HEADER 1060 #endif 1061 1062 #ifndef _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1063 #define _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 1064 #endif 1065 1066 #if defined(_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS) 1067 #if defined(__clang__) && __has_attribute(acquire_capability) 1068 // Work around the attribute handling in clang. When both __declspec and 1069 // __attribute__ are present, the processing goes awry preventing the definition 1070 // of the types. 1071 #if !defined(_LIBCPP_OBJECT_FORMAT_COFF) 1072 #define _LIBCPP_HAS_THREAD_SAFETY_ANNOTATIONS 1073 #endif 1074 #endif 1075 #endif 1076 1077 #if __has_attribute(require_constant_initialization) 1078 #define _LIBCPP_SAFE_STATIC __attribute__((__require_constant_initialization__)) 1079 #else 1080 #define _LIBCPP_SAFE_STATIC 1081 #endif 1082 1083 #if !__has_builtin(__builtin_addressof) && _GNUC_VER < 700 1084 # define _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF 1085 #endif 1086 1087 #if !defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1088 #if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) 1089 #define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS 1090 #endif 1091 #endif 1092 1093 #if __has_attribute(diagnose_if) && !defined(_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS) 1094 # define _LIBCPP_DIAGNOSE_WARNING(...) \ 1095 __attribute__((diagnose_if(__VA_ARGS__, "warning"))) 1096 # define _LIBCPP_DIAGNOSE_ERROR(...) \ 1097 __attribute__((diagnose_if(__VA_ARGS__, "error"))) 1098 #else 1099 # define _LIBCPP_DIAGNOSE_WARNING(...) 1100 # define _LIBCPP_DIAGNOSE_ERROR(...) 1101 #endif 1102 1103 #if __has_attribute(fallthough) || _GNUC_VER >= 700 1104 // Use a function like macro to imply that it must be followed by a semicolon 1105 #define _LIBCPP_FALLTHROUGH() __attribute__((__fallthrough__)) 1106 #else 1107 #define _LIBCPP_FALLTHROUGH() ((void)0) 1108 #endif 1109 1110 #if defined(_LIBCPP_ABI_MICROSOFT) && \ 1111 (defined(_LIBCPP_COMPILER_MSVC) || __has_declspec_attribute(empty_bases)) 1112 # define _LIBCPP_DECLSPEC_EMPTY_BASES __declspec(empty_bases) 1113 #else 1114 # define _LIBCPP_DECLSPEC_EMPTY_BASES 1115 #endif 1116 1117 #if defined(_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES) 1118 # define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR 1119 # define _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS 1120 # define _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE 1121 # define _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS 1122 #endif // _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES 1123 1124 #if !defined(__cpp_deduction_guides) || __cpp_deduction_guides < 201611 1125 # define _LIBCPP_HAS_NO_DEDUCTION_GUIDES 1126 #endif 1127 1128 #if !__has_keyword(__is_aggregate) && (_GNUC_VER_NEW < 7001) 1129 # define _LIBCPP_HAS_NO_IS_AGGREGATE 1130 #endif 1131 1132 #if !defined(__cpp_coroutines) || __cpp_coroutines < 201703L 1133 # define _LIBCPP_HAS_NO_COROUTINES 1134 #endif 1135 1136 // Decide whether to use availability macros. 1137 #if !defined(_LIBCPP_BUILDING_LIBRARY) && \ 1138 !defined(_LIBCPP_DISABLE_AVAILABILITY) && \ 1139 __has_feature(attribute_availability_with_strict) && \ 1140 __has_feature(attribute_availability_in_templates) 1141 #ifdef __APPLE__ 1142 #define _LIBCPP_USE_AVAILABILITY_APPLE 1143 #endif 1144 #endif 1145 1146 // Define availability macros. 1147 #if defined(_LIBCPP_USE_AVAILABILITY_APPLE) 1148 #define _LIBCPP_AVAILABILITY_SHARED_MUTEX \ 1149 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1150 __attribute__((availability(ios,strict,introduced=10.0))) \ 1151 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1152 __attribute__((availability(watchos,strict,introduced=3.0))) 1153 #define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS __attribute__((unavailable)) 1154 #define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH __attribute__((unavailable)) 1155 #define _LIBCPP_AVAILABILITY_BAD_ANY_CAST __attribute__((unavailable)) 1156 #define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS \ 1157 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1158 __attribute__((availability(ios,strict,introduced=10.0))) \ 1159 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1160 __attribute__((availability(watchos,strict,introduced=3.0))) 1161 #define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE \ 1162 __attribute__((availability(macosx,strict,introduced=10.12))) \ 1163 __attribute__((availability(ios,strict,introduced=10.0))) \ 1164 __attribute__((availability(tvos,strict,introduced=10.0))) \ 1165 __attribute__((availability(watchos,strict,introduced=3.0))) 1166 #define _LIBCPP_AVAILABILITY_FUTURE_ERROR \ 1167 __attribute__((availability(ios,strict,introduced=6.0))) 1168 #define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE \ 1169 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1170 __attribute__((availability(ios,strict,introduced=7.0))) 1171 #define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY \ 1172 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1173 __attribute__((availability(ios,strict,introduced=7.0))) 1174 #define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR \ 1175 __attribute__((availability(macosx,strict,introduced=10.9))) \ 1176 __attribute__((availability(ios,strict,introduced=7.0))) 1177 #else 1178 #define _LIBCPP_AVAILABILITY_SHARED_MUTEX 1179 #define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS 1180 #define _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1181 #define _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1182 #define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS 1183 #define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE 1184 #define _LIBCPP_AVAILABILITY_FUTURE_ERROR 1185 #define _LIBCPP_AVAILABILITY_TYPEINFO_VTABLE 1186 #define _LIBCPP_AVAILABILITY_LOCALE_CATEGORY 1187 #define _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 1188 #endif 1189 1190 // Define availability that depends on _LIBCPP_NO_EXCEPTIONS. 1191 #ifdef _LIBCPP_NO_EXCEPTIONS 1192 #define _LIBCPP_AVAILABILITY_DYNARRAY 1193 #define _LIBCPP_AVAILABILITY_FUTURE 1194 #define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST 1195 #else 1196 #define _LIBCPP_AVAILABILITY_DYNARRAY _LIBCPP_AVAILABILITY_BAD_ARRAY_LENGTH 1197 #define _LIBCPP_AVAILABILITY_FUTURE _LIBCPP_AVAILABILITY_FUTURE_ERROR 1198 #define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST \ 1199 _LIBCPP_AVAILABILITY_BAD_ANY_CAST 1200 #endif 1201 1202 // Availability of stream API in the dylib got dropped and re-added. The 1203 // extern template should effectively be available at: 1204 // availability(macosx,introduced=10.9) 1205 // availability(ios,introduced=7.0) 1206 #if defined(_LIBCPP_USE_AVAILABILITY_APPLE) && \ 1207 ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ 1208 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1090) || \ 1209 (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ 1210 __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 70000)) 1211 #define _LIBCPP_AVAILABILITY_NO_STREAMS_EXTERN_TEMPLATE 1212 #endif 1213 1214 #if defined(_LIBCPP_COMPILER_IBM) 1215 #define _LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO 1216 #endif 1217 1218 #if defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1219 # define _LIBCPP_PUSH_MACROS 1220 # define _LIBCPP_POP_MACROS 1221 #else 1222 // Don't warn about macro conflicts when we can restore them at the 1223 // end of the header. 1224 # ifndef _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1225 # define _LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS 1226 # endif 1227 # if defined(_LIBCPP_COMPILER_MSVC) 1228 # define _LIBCPP_PUSH_MACROS \ 1229 __pragma(push_macro("min")) \ 1230 __pragma(push_macro("max")) 1231 # define _LIBCPP_POP_MACROS \ 1232 __pragma(pop_macro("min")) \ 1233 __pragma(pop_macro("max")) 1234 # else 1235 # define _LIBCPP_PUSH_MACROS \ 1236 _Pragma("push_macro(\"min\")") \ 1237 _Pragma("push_macro(\"max\")") 1238 # define _LIBCPP_POP_MACROS \ 1239 _Pragma("pop_macro(\"min\")") \ 1240 _Pragma("pop_macro(\"max\")") 1241 # endif 1242 #endif // defined(_LIBCPP_HAS_NO_PRAGMA_PUSH_POP_MACRO) 1243 1244 1245 #endif // __cplusplus 1246 1247 #endif // _LIBCPP_CONFIG 1248
