diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/base/config.h')
| -rw-r--r-- | third_party/abseil_cpp/absl/base/config.h | 664 |
1 files changed, 0 insertions, 664 deletions
diff --git a/third_party/abseil_cpp/absl/base/config.h b/third_party/abseil_cpp/absl/base/config.h deleted file mode 100644 index f54466deeb..0000000000 --- a/third_party/abseil_cpp/absl/base/config.h +++ /dev/null @@ -1,664 +0,0 @@ -// -// Copyright 2017 The Abseil Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// https://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// -// ----------------------------------------------------------------------------- -// File: config.h -// ----------------------------------------------------------------------------- -// -// This header file defines a set of macros for checking the presence of -// important compiler and platform features. Such macros can be used to -// produce portable code by parameterizing compilation based on the presence or -// lack of a given feature. -// -// We define a "feature" as some interface we wish to program to: for example, -// a library function or system call. A value of `1` indicates support for -// that feature; any other value indicates the feature support is undefined. -// -// Example: -// -// Suppose a programmer wants to write a program that uses the 'mmap()' system -// call. The Abseil macro for that feature (`ABSL_HAVE_MMAP`) allows you to -// selectively include the `mmap.h` header and bracket code using that feature -// in the macro: -// -// #include "absl/base/config.h" -// -// #ifdef ABSL_HAVE_MMAP -// #include "sys/mman.h" -// #endif //ABSL_HAVE_MMAP -// -// ... -// #ifdef ABSL_HAVE_MMAP -// void *ptr = mmap(...); -// ... -// #endif // ABSL_HAVE_MMAP - -#ifndef ABSL_BASE_CONFIG_H_ -#define ABSL_BASE_CONFIG_H_ - -// Included for the __GLIBC__ macro (or similar macros on other systems). -#include <limits.h> - -#ifdef __cplusplus -// Included for __GLIBCXX__, _LIBCPP_VERSION -#include <cstddef> -#endif // __cplusplus - -#if defined(__APPLE__) -// Included for TARGET_OS_IPHONE, __IPHONE_OS_VERSION_MIN_REQUIRED, -// __IPHONE_8_0. -#include <Availability.h> -#include <TargetConditionals.h> -#endif - -#include "absl/base/options.h" -#include "absl/base/policy_checks.h" - -// Helper macro to convert a CPP variable to a string literal. -#define ABSL_INTERNAL_DO_TOKEN_STR(x) #x -#define ABSL_INTERNAL_TOKEN_STR(x) ABSL_INTERNAL_DO_TOKEN_STR(x) - -// ----------------------------------------------------------------------------- -// Abseil namespace annotations -// ----------------------------------------------------------------------------- - -// ABSL_NAMESPACE_BEGIN/ABSL_NAMESPACE_END -// -// An annotation placed at the beginning/end of each `namespace absl` scope. -// This is used to inject an inline namespace. -// -// The proper way to write Abseil code in the `absl` namespace is: -// -// namespace absl { -// ABSL_NAMESPACE_BEGIN -// -// void Foo(); // absl::Foo(). -// -// ABSL_NAMESPACE_END -// } // namespace absl -// -// Users of Abseil should not use these macros, because users of Abseil should -// not write `namespace absl {` in their own code for any reason. (Abseil does -// not support forward declarations of its own types, nor does it support -// user-provided specialization of Abseil templates. Code that violates these -// rules may be broken without warning.) -#if !defined(ABSL_OPTION_USE_INLINE_NAMESPACE) || \ - !defined(ABSL_OPTION_INLINE_NAMESPACE_NAME) -#error options.h is misconfigured. -#endif - -// Check that ABSL_OPTION_INLINE_NAMESPACE_NAME is neither "head" nor "" -#if defined(__cplusplus) && ABSL_OPTION_USE_INLINE_NAMESPACE == 1 - -#define ABSL_INTERNAL_INLINE_NAMESPACE_STR \ - ABSL_INTERNAL_TOKEN_STR(ABSL_OPTION_INLINE_NAMESPACE_NAME) - -static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0', - "options.h misconfigured: ABSL_OPTION_INLINE_NAMESPACE_NAME must " - "not be empty."); -static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || - ABSL_INTERNAL_INLINE_NAMESPACE_STR[1] != 'e' || - ABSL_INTERNAL_INLINE_NAMESPACE_STR[2] != 'a' || - ABSL_INTERNAL_INLINE_NAMESPACE_STR[3] != 'd' || - ABSL_INTERNAL_INLINE_NAMESPACE_STR[4] != '\0', - "options.h misconfigured: ABSL_OPTION_INLINE_NAMESPACE_NAME must " - "be changed to a new, unique identifier name."); - -#endif - -#if ABSL_OPTION_USE_INLINE_NAMESPACE == 0 -#define ABSL_NAMESPACE_BEGIN -#define ABSL_NAMESPACE_END -#elif ABSL_OPTION_USE_INLINE_NAMESPACE == 1 -#define ABSL_NAMESPACE_BEGIN \ - inline namespace ABSL_OPTION_INLINE_NAMESPACE_NAME { -#define ABSL_NAMESPACE_END } -#else -#error options.h is misconfigured. -#endif - -// ----------------------------------------------------------------------------- -// Compiler Feature Checks -// ----------------------------------------------------------------------------- - -// ABSL_HAVE_BUILTIN() -// -// Checks whether the compiler supports a Clang Feature Checking Macro, and if -// so, checks whether it supports the provided builtin function "x" where x -// is one of the functions noted in -// https://clang.llvm.org/docs/LanguageExtensions.html -// -// Note: Use this macro to avoid an extra level of #ifdef __has_builtin check. -// http://releases.llvm.org/3.3/tools/clang/docs/LanguageExtensions.html -#ifdef __has_builtin -#define ABSL_HAVE_BUILTIN(x) __has_builtin(x) -#else -#define ABSL_HAVE_BUILTIN(x) 0 -#endif - -#if defined(__is_identifier) -#define ABSL_INTERNAL_HAS_KEYWORD(x) !(__is_identifier(x)) -#else -#define ABSL_INTERNAL_HAS_KEYWORD(x) 0 -#endif - -// ABSL_HAVE_TLS is defined to 1 when __thread should be supported. -// We assume __thread is supported on Linux when compiled with Clang or compiled -// against libstdc++ with _GLIBCXX_HAVE_TLS defined. -#ifdef ABSL_HAVE_TLS -#error ABSL_HAVE_TLS cannot be directly set -#elif defined(__linux__) && (defined(__clang__) || defined(_GLIBCXX_HAVE_TLS)) -#define ABSL_HAVE_TLS 1 -#endif - -// ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE -// -// Checks whether `std::is_trivially_destructible<T>` is supported. -// -// Notes: All supported compilers using libc++ support this feature, as does -// gcc >= 4.8.1 using libstdc++, and Visual Studio. -#ifdef ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE -#error ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE cannot be directly set -#elif defined(_LIBCPP_VERSION) || \ - (!defined(__clang__) && defined(__GNUC__) && defined(__GLIBCXX__) && \ - (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))) || \ - defined(_MSC_VER) -#define ABSL_HAVE_STD_IS_TRIVIALLY_DESTRUCTIBLE 1 -#endif - -// ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE -// -// Checks whether `std::is_trivially_default_constructible<T>` and -// `std::is_trivially_copy_constructible<T>` are supported. - -// ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE -// -// Checks whether `std::is_trivially_copy_assignable<T>` is supported. - -// Notes: Clang with libc++ supports these features, as does gcc >= 5.1 with -// either libc++ or libstdc++, and Visual Studio (but not NVCC). -#if defined(ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE) -#error ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE cannot be directly set -#elif defined(ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE) -#error ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE cannot directly set -#elif (defined(__clang__) && defined(_LIBCPP_VERSION)) || \ - (!defined(__clang__) && defined(__GNUC__) && \ - (__GNUC__ > 7 || (__GNUC__ == 7 && __GNUC_MINOR__ >= 4)) && \ - (defined(_LIBCPP_VERSION) || defined(__GLIBCXX__))) || \ - (defined(_MSC_VER) && !defined(__NVCC__)) -#define ABSL_HAVE_STD_IS_TRIVIALLY_CONSTRUCTIBLE 1 -#define ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE 1 -#endif - -// ABSL_HAVE_SOURCE_LOCATION_CURRENT -// -// Indicates whether `absl::SourceLocation::current()` will return useful -// information in some contexts. -#ifndef ABSL_HAVE_SOURCE_LOCATION_CURRENT -#if ABSL_INTERNAL_HAS_KEYWORD(__builtin_LINE) && \ - ABSL_INTERNAL_HAS_KEYWORD(__builtin_FILE) -#define ABSL_HAVE_SOURCE_LOCATION_CURRENT 1 -#endif -#endif - -// ABSL_HAVE_THREAD_LOCAL -// -// Checks whether C++11's `thread_local` storage duration specifier is -// supported. -#ifdef ABSL_HAVE_THREAD_LOCAL -#error ABSL_HAVE_THREAD_LOCAL cannot be directly set -#elif defined(__APPLE__) -// Notes: -// * Xcode's clang did not support `thread_local` until version 8, and -// even then not for all iOS < 9.0. -// * Xcode 9.3 started disallowing `thread_local` for 32-bit iOS simulator -// targeting iOS 9.x. -// * Xcode 10 moves the deployment target check for iOS < 9.0 to link time -// making __has_feature unreliable there. -// -// Otherwise, `__has_feature` is only supported by Clang so it has be inside -// `defined(__APPLE__)` check. -#if __has_feature(cxx_thread_local) && \ - !(TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0) -#define ABSL_HAVE_THREAD_LOCAL 1 -#endif -#else // !defined(__APPLE__) -#define ABSL_HAVE_THREAD_LOCAL 1 -#endif - -// There are platforms for which TLS should not be used even though the compiler -// makes it seem like it's supported (Android NDK < r12b for example). -// This is primarily because of linker problems and toolchain misconfiguration: -// Abseil does not intend to support this indefinitely. Currently, the newest -// toolchain that we intend to support that requires this behavior is the -// r11 NDK - allowing for a 5 year support window on that means this option -// is likely to be removed around June of 2021. -// TLS isn't supported until NDK r12b per -// https://developer.android.com/ndk/downloads/revision_history.html -// Since NDK r16, `__NDK_MAJOR__` and `__NDK_MINOR__` are defined in -// <android/ndk-version.h>. For NDK < r16, users should define these macros, -// e.g. `-D__NDK_MAJOR__=11 -D__NKD_MINOR__=0` for NDK r11. -#if defined(__ANDROID__) && defined(__clang__) -#if __has_include(<android/ndk-version.h>) -#include <android/ndk-version.h> -#endif // __has_include(<android/ndk-version.h>) -#if defined(__ANDROID__) && defined(__clang__) && defined(__NDK_MAJOR__) && \ - defined(__NDK_MINOR__) && \ - ((__NDK_MAJOR__ < 12) || ((__NDK_MAJOR__ == 12) && (__NDK_MINOR__ < 1))) -#undef ABSL_HAVE_TLS -#undef ABSL_HAVE_THREAD_LOCAL -#endif -#endif // defined(__ANDROID__) && defined(__clang__) - -// ABSL_HAVE_INTRINSIC_INT128 -// -// Checks whether the __int128 compiler extension for a 128-bit integral type is -// supported. -// -// Note: __SIZEOF_INT128__ is defined by Clang and GCC when __int128 is -// supported, but we avoid using it in certain cases: -// * On Clang: -// * Building using Clang for Windows, where the Clang runtime library has -// 128-bit support only on LP64 architectures, but Windows is LLP64. -// * On Nvidia's nvcc: -// * nvcc also defines __GNUC__ and __SIZEOF_INT128__, but not all versions -// actually support __int128. -#ifdef ABSL_HAVE_INTRINSIC_INT128 -#error ABSL_HAVE_INTRINSIC_INT128 cannot be directly set -#elif defined(__SIZEOF_INT128__) -#if (defined(__clang__) && !defined(_WIN32)) || \ - (defined(__CUDACC__) && __CUDACC_VER_MAJOR__ >= 9) || \ - (defined(__GNUC__) && !defined(__clang__) && !defined(__CUDACC__)) -#define ABSL_HAVE_INTRINSIC_INT128 1 -#elif defined(__CUDACC__) -// __CUDACC_VER__ is a full version number before CUDA 9, and is defined to a -// string explaining that it has been removed starting with CUDA 9. We use -// nested #ifs because there is no short-circuiting in the preprocessor. -// NOTE: `__CUDACC__` could be undefined while `__CUDACC_VER__` is defined. -#if __CUDACC_VER__ >= 70000 -#define ABSL_HAVE_INTRINSIC_INT128 1 -#endif // __CUDACC_VER__ >= 70000 -#endif // defined(__CUDACC__) -#endif // ABSL_HAVE_INTRINSIC_INT128 - -// ABSL_HAVE_EXCEPTIONS -// -// Checks whether the compiler both supports and enables exceptions. Many -// compilers support a "no exceptions" mode that disables exceptions. -// -// Generally, when ABSL_HAVE_EXCEPTIONS is not defined: -// -// * Code using `throw` and `try` may not compile. -// * The `noexcept` specifier will still compile and behave as normal. -// * The `noexcept` operator may still return `false`. -// -// For further details, consult the compiler's documentation. -#ifdef ABSL_HAVE_EXCEPTIONS -#error ABSL_HAVE_EXCEPTIONS cannot be directly set. - -#elif defined(__clang__) - -#if __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 6) -// Clang >= 3.6 -#if __has_feature(cxx_exceptions) -#define ABSL_HAVE_EXCEPTIONS 1 -#endif // __has_feature(cxx_exceptions) -#else -// Clang < 3.6 -// http://releases.llvm.org/3.6.0/tools/clang/docs/ReleaseNotes.html#the-exceptions-macro -#if defined(__EXCEPTIONS) && __has_feature(cxx_exceptions) -#define ABSL_HAVE_EXCEPTIONS 1 -#endif // defined(__EXCEPTIONS) && __has_feature(cxx_exceptions) -#endif // __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 6) - -// Handle remaining special cases and default to exceptions being supported. -#elif !(defined(__GNUC__) && (__GNUC__ < 5) && !defined(__EXCEPTIONS)) && \ - !(defined(__GNUC__) && (__GNUC__ >= 5) && !defined(__cpp_exceptions)) && \ - !(defined(_MSC_VER) && !defined(_CPPUNWIND)) -#define ABSL_HAVE_EXCEPTIONS 1 -#endif - -// ----------------------------------------------------------------------------- -// Platform Feature Checks -// ----------------------------------------------------------------------------- - -// Currently supported operating systems and associated preprocessor -// symbols: -// -// Linux and Linux-derived __linux__ -// Android __ANDROID__ (implies __linux__) -// Linux (non-Android) __linux__ && !__ANDROID__ -// Darwin (macOS and iOS) __APPLE__ -// Akaros (http://akaros.org) __ros__ -// Windows _WIN32 -// NaCL __native_client__ -// AsmJS __asmjs__ -// WebAssembly __wasm__ -// Fuchsia __Fuchsia__ -// -// Note that since Android defines both __ANDROID__ and __linux__, one -// may probe for either Linux or Android by simply testing for __linux__. - -// ABSL_HAVE_MMAP -// -// Checks whether the platform has an mmap(2) implementation as defined in -// POSIX.1-2001. -#ifdef ABSL_HAVE_MMAP -#error ABSL_HAVE_MMAP cannot be directly set -#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || \ - defined(__ros__) || defined(__native_client__) || defined(__asmjs__) || \ - defined(__wasm__) || defined(__Fuchsia__) || defined(__sun) || \ - defined(__ASYLO__) -#define ABSL_HAVE_MMAP 1 -#endif - -// ABSL_HAVE_PTHREAD_GETSCHEDPARAM -// -// Checks whether the platform implements the pthread_(get|set)schedparam(3) -// functions as defined in POSIX.1-2001. -#ifdef ABSL_HAVE_PTHREAD_GETSCHEDPARAM -#error ABSL_HAVE_PTHREAD_GETSCHEDPARAM cannot be directly set -#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || \ - defined(__ros__) -#define ABSL_HAVE_PTHREAD_GETSCHEDPARAM 1 -#endif - -// ABSL_HAVE_SCHED_YIELD -// -// Checks whether the platform implements sched_yield(2) as defined in -// POSIX.1-2001. -#ifdef ABSL_HAVE_SCHED_YIELD -#error ABSL_HAVE_SCHED_YIELD cannot be directly set -#elif defined(__linux__) || defined(__ros__) || defined(__native_client__) -#define ABSL_HAVE_SCHED_YIELD 1 -#endif - -// ABSL_HAVE_SEMAPHORE_H -// -// Checks whether the platform supports the <semaphore.h> header and sem_init(3) -// family of functions as standardized in POSIX.1-2001. -// -// Note: While Apple provides <semaphore.h> for both iOS and macOS, it is -// explicitly deprecated and will cause build failures if enabled for those -// platforms. We side-step the issue by not defining it here for Apple -// platforms. -#ifdef ABSL_HAVE_SEMAPHORE_H -#error ABSL_HAVE_SEMAPHORE_H cannot be directly set -#elif defined(__linux__) || defined(__ros__) -#define ABSL_HAVE_SEMAPHORE_H 1 -#endif - -// ABSL_HAVE_ALARM -// -// Checks whether the platform supports the <signal.h> header and alarm(2) -// function as standardized in POSIX.1-2001. -#ifdef ABSL_HAVE_ALARM -#error ABSL_HAVE_ALARM cannot be directly set -#elif defined(__GOOGLE_GRTE_VERSION__) -// feature tests for Google's GRTE -#define ABSL_HAVE_ALARM 1 -#elif defined(__GLIBC__) -// feature test for glibc -#define ABSL_HAVE_ALARM 1 -#elif defined(_MSC_VER) -// feature tests for Microsoft's library -#elif defined(__MINGW32__) -// mingw32 doesn't provide alarm(2): -// https://osdn.net/projects/mingw/scm/git/mingw-org-wsl/blobs/5.2-trunk/mingwrt/include/unistd.h -// mingw-w64 provides a no-op implementation: -// https://sourceforge.net/p/mingw-w64/mingw-w64/ci/master/tree/mingw-w64-crt/misc/alarm.c -#elif defined(__EMSCRIPTEN__) -// emscripten doesn't support signals -#elif defined(__Fuchsia__) -// Signals don't exist on fuchsia. -#elif defined(__native_client__) -#else -// other standard libraries -#define ABSL_HAVE_ALARM 1 -#endif - -// ABSL_IS_LITTLE_ENDIAN -// ABSL_IS_BIG_ENDIAN -// -// Checks the endianness of the platform. -// -// Notes: uses the built in endian macros provided by GCC (since 4.6) and -// Clang (since 3.2); see -// https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html. -// Otherwise, if _WIN32, assume little endian. Otherwise, bail with an error. -#if defined(ABSL_IS_BIG_ENDIAN) -#error "ABSL_IS_BIG_ENDIAN cannot be directly set." -#endif -#if defined(ABSL_IS_LITTLE_ENDIAN) -#error "ABSL_IS_LITTLE_ENDIAN cannot be directly set." -#endif - -#if (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \ - __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) -#define ABSL_IS_LITTLE_ENDIAN 1 -#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \ - __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ -#define ABSL_IS_BIG_ENDIAN 1 -#elif defined(_WIN32) -#define ABSL_IS_LITTLE_ENDIAN 1 -#else -#error "absl endian detection needs to be set up for your compiler" -#endif - -// macOS 10.13 and iOS 10.11 don't let you use <any>, <optional>, or <variant> -// even though the headers exist and are publicly noted to work. See -// https://github.com/abseil/abseil-cpp/issues/207 and -// https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes -// libc++ spells out the availability requirements in the file -// llvm-project/libcxx/include/__config via the #define -// _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS. -#if defined(__APPLE__) && defined(_LIBCPP_VERSION) && \ - ((defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \ - __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101400) || \ - (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && \ - __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 120000) || \ - (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && \ - __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 120000) || \ - (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && \ - __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 50000)) -#define ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE 1 -#else -#define ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE 0 -#endif - -// ABSL_HAVE_STD_ANY -// -// Checks whether C++17 std::any is available by checking whether <any> exists. -#ifdef ABSL_HAVE_STD_ANY -#error "ABSL_HAVE_STD_ANY cannot be directly set." -#endif - -#ifdef __has_include -#if __has_include(<any>) && __cplusplus >= 201703L && \ - !ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE -#define ABSL_HAVE_STD_ANY 1 -#endif -#endif - -// ABSL_HAVE_STD_OPTIONAL -// -// Checks whether C++17 std::optional is available. -#ifdef ABSL_HAVE_STD_OPTIONAL -#error "ABSL_HAVE_STD_OPTIONAL cannot be directly set." -#endif - -#ifdef __has_include -#if __has_include(<optional>) && __cplusplus >= 201703L && \ - !ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE -#define ABSL_HAVE_STD_OPTIONAL 1 -#endif -#endif - -// ABSL_HAVE_STD_VARIANT -// -// Checks whether C++17 std::variant is available. -#ifdef ABSL_HAVE_STD_VARIANT -#error "ABSL_HAVE_STD_VARIANT cannot be directly set." -#endif - -#ifdef __has_include -#if __has_include(<variant>) && __cplusplus >= 201703L && \ - !ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE -#define ABSL_HAVE_STD_VARIANT 1 -#endif -#endif - -// ABSL_HAVE_STD_STRING_VIEW -// -// Checks whether C++17 std::string_view is available. -#ifdef ABSL_HAVE_STD_STRING_VIEW -#error "ABSL_HAVE_STD_STRING_VIEW cannot be directly set." -#endif - -#ifdef __has_include -#if __has_include(<string_view>) && __cplusplus >= 201703L -#define ABSL_HAVE_STD_STRING_VIEW 1 -#endif -#endif - -// For MSVC, `__has_include` is supported in VS 2017 15.3, which is later than -// the support for <optional>, <any>, <string_view>, <variant>. So we use -// _MSC_VER to check whether we have VS 2017 RTM (when <optional>, <any>, -// <string_view>, <variant> is implemented) or higher. Also, `__cplusplus` is -// not correctly set by MSVC, so we use `_MSVC_LANG` to check the language -// version. -// TODO(zhangxy): fix tests before enabling aliasing for `std::any`. -#if defined(_MSC_VER) && _MSC_VER >= 1910 && \ - ((defined(_MSVC_LANG) && _MSVC_LANG > 201402) || __cplusplus > 201402) -// #define ABSL_HAVE_STD_ANY 1 -#define ABSL_HAVE_STD_OPTIONAL 1 -#define ABSL_HAVE_STD_VARIANT 1 -#define ABSL_HAVE_STD_STRING_VIEW 1 -#endif - -// ABSL_USES_STD_ANY -// -// Indicates whether absl::any is an alias for std::any. -#if !defined(ABSL_OPTION_USE_STD_ANY) -#error options.h is misconfigured. -#elif ABSL_OPTION_USE_STD_ANY == 0 || \ - (ABSL_OPTION_USE_STD_ANY == 2 && !defined(ABSL_HAVE_STD_ANY)) -#undef ABSL_USES_STD_ANY -#elif ABSL_OPTION_USE_STD_ANY == 1 || \ - (ABSL_OPTION_USE_STD_ANY == 2 && defined(ABSL_HAVE_STD_ANY)) -#define ABSL_USES_STD_ANY 1 -#else -#error options.h is misconfigured. -#endif - -// ABSL_USES_STD_OPTIONAL -// -// Indicates whether absl::optional is an alias for std::optional. -#if !defined(ABSL_OPTION_USE_STD_OPTIONAL) -#error options.h is misconfigured. -#elif ABSL_OPTION_USE_STD_OPTIONAL == 0 || \ - (ABSL_OPTION_USE_STD_OPTIONAL == 2 && !defined(ABSL_HAVE_STD_OPTIONAL)) -#undef ABSL_USES_STD_OPTIONAL -#elif ABSL_OPTION_USE_STD_OPTIONAL == 1 || \ - (ABSL_OPTION_USE_STD_OPTIONAL == 2 && defined(ABSL_HAVE_STD_OPTIONAL)) -#define ABSL_USES_STD_OPTIONAL 1 -#else -#error options.h is misconfigured. -#endif - -// ABSL_USES_STD_VARIANT -// -// Indicates whether absl::variant is an alias for std::variant. -#if !defined(ABSL_OPTION_USE_STD_VARIANT) -#error options.h is misconfigured. -#elif ABSL_OPTION_USE_STD_VARIANT == 0 || \ - (ABSL_OPTION_USE_STD_VARIANT == 2 && !defined(ABSL_HAVE_STD_VARIANT)) -#undef ABSL_USES_STD_VARIANT -#elif ABSL_OPTION_USE_STD_VARIANT == 1 || \ - (ABSL_OPTION_USE_STD_VARIANT == 2 && defined(ABSL_HAVE_STD_VARIANT)) -#define ABSL_USES_STD_VARIANT 1 -#else -#error options.h is misconfigured. -#endif - -// ABSL_USES_STD_STRING_VIEW -// -// Indicates whether absl::string_view is an alias for std::string_view. -#if !defined(ABSL_OPTION_USE_STD_STRING_VIEW) -#error options.h is misconfigured. -#elif ABSL_OPTION_USE_STD_STRING_VIEW == 0 || \ - (ABSL_OPTION_USE_STD_STRING_VIEW == 2 && \ - !defined(ABSL_HAVE_STD_STRING_VIEW)) -#undef ABSL_USES_STD_STRING_VIEW -#elif ABSL_OPTION_USE_STD_STRING_VIEW == 1 || \ - (ABSL_OPTION_USE_STD_STRING_VIEW == 2 && \ - defined(ABSL_HAVE_STD_STRING_VIEW)) -#define ABSL_USES_STD_STRING_VIEW 1 -#else -#error options.h is misconfigured. -#endif - -// In debug mode, MSVC 2017's std::variant throws a EXCEPTION_ACCESS_VIOLATION -// SEH exception from emplace for variant<SomeStruct> when constructing the -// struct can throw. This defeats some of variant_test and -// variant_exception_safety_test. -#if defined(_MSC_VER) && _MSC_VER >= 1700 && defined(_DEBUG) -#define ABSL_INTERNAL_MSVC_2017_DBG_MODE -#endif - -// ABSL_INTERNAL_MANGLED_NS -// ABSL_INTERNAL_MANGLED_BACKREFERENCE -// -// Internal macros for building up mangled names in our internal fork of CCTZ. -// This implementation detail is only needed and provided for the MSVC build. -// -// These macros both expand to string literals. ABSL_INTERNAL_MANGLED_NS is -// the mangled spelling of the `absl` namespace, and -// ABSL_INTERNAL_MANGLED_BACKREFERENCE is a back-reference integer representing -// the proper count to skip past the CCTZ fork namespace names. (This number -// is one larger when there is an inline namespace name to skip.) -#if defined(_MSC_VER) -#if ABSL_OPTION_USE_INLINE_NAMESPACE == 0 -#define ABSL_INTERNAL_MANGLED_NS "absl" -#define ABSL_INTERNAL_MANGLED_BACKREFERENCE "5" -#else -#define ABSL_INTERNAL_MANGLED_NS \ - ABSL_INTERNAL_TOKEN_STR(ABSL_OPTION_INLINE_NAMESPACE_NAME) "@absl" -#define ABSL_INTERNAL_MANGLED_BACKREFERENCE "6" -#endif -#endif - -#undef ABSL_INTERNAL_HAS_KEYWORD - -// ABSL_DLL -// -// When building Abseil as a DLL, this macro expands to `__declspec(dllexport)` -// so we can annotate symbols appropriately as being exported. When used in -// headers consuming a DLL, this macro expands to `__declspec(dllimport)` so -// that consumers know the symbol is defined inside the DLL. In all other cases, -// the macro expands to nothing. -#if defined(_MSC_VER) -#if defined(ABSL_BUILD_DLL) -#define ABSL_DLL __declspec(dllexport) -#elif defined(ABSL_CONSUME_DLL) -#define ABSL_DLL __declspec(dllimport) -#else -#define ABSL_DLL -#endif -#else -#define ABSL_DLL -#endif // defined(_MSC_VER) - -#endif // ABSL_BASE_CONFIG_H_ |