EVOLUTION-MANAGER

Edit File: policy_checks.h

// 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: policy_checks.h // ----------------------------------------------------------------------------- // // This header enforces a minimum set of policies at build time, such as the // supported compiler and library versions. Unsupported configurations are // reported with `#error`. This enforcement is best effort, so successfully // compiling this header does not guarantee a supported configuration. #ifndef ABSL_BASE_POLICY_CHECKS_H_ #define ABSL_BASE_POLICY_CHECKS_H_ // Included for the __GLIBC_PREREQ macro used below. #include <limits.h> // Included for the _STLPORT_VERSION macro used below. #if defined(__cplusplus) #include <cstddef> #endif // ----------------------------------------------------------------------------- // Operating System Check // ----------------------------------------------------------------------------- #if defined(__CYGWIN__) #error "Cygwin is not supported." #endif // ----------------------------------------------------------------------------- // Compiler Check // ----------------------------------------------------------------------------- // We support MSVC++ 14.0 update 2 and later. // This minimum will go up. #if defined(_MSC_FULL_VER) && _MSC_FULL_VER < 190023918 && !defined(__clang__) #error "This package requires Visual Studio 2015 Update 2 or higher." #endif // We support gcc 4.7 and later. // This minimum will go up. #if defined(__GNUC__) && !defined(__clang__) #if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7) #error "This package requires gcc 4.7 or higher." #endif #endif // We support Apple Xcode clang 4.2.1 (version 421.11.65) and later. // This corresponds to Apple Xcode version 4.5. // This minimum will go up. #if defined(__apple_build_version__) && __apple_build_version__ < 4211165 #error "This package requires __apple_build_version__ of 4211165 or higher." #endif // ----------------------------------------------------------------------------- // C++ Version Check // ----------------------------------------------------------------------------- // Enforce C++11 as the minimum. Note that Visual Studio has not // advanced __cplusplus despite being good enough for our purposes, so // so we exempt it from the check. #if defined(__cplusplus) && !defined(_MSC_VER) #if __cplusplus < 201103L #error "C++ versions less than C++11 are not supported." #endif #endif // ----------------------------------------------------------------------------- // Standard Library Check // ----------------------------------------------------------------------------- #if defined(_STLPORT_VERSION) #error "STLPort is not supported." #endif // ----------------------------------------------------------------------------- // `char` Size Check // ----------------------------------------------------------------------------- // Abseil currently assumes CHAR_BIT == 8. If you would like to use Abseil on a // platform where this is not the case, please provide us with the details about // your platform so we can consider relaxing this requirement. #if CHAR_BIT != 8 #error "Abseil assumes CHAR_BIT == 8." #endif // ----------------------------------------------------------------------------- // `int` Size Check // ----------------------------------------------------------------------------- // Abseil currently assumes that an int is 4 bytes. If you would like to use // Abseil on a platform where this is not the case, please provide us with the // details about your platform so we can consider relaxing this requirement. #if INT_MAX < 2147483647 #error "Abseil assumes that int is at least 4 bytes. " #endif #endif // ABSL_BASE_POLICY_CHECKS_H_