text: // Copyright 2019 Google LLC
  //
  // 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
  //
  //     http://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.
  
  #ifndef GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_INTERNAL_COMPILER_INFO_H
  #define GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_INTERNAL_COMPILER_INFO_H
  
  #include "google/cloud/version.h"
  #include <string>
  
  namespace google {
  namespace cloud {
  GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_BEGIN
  namespace internal {
  /**
   * Returns the compiler ID.
   *
   * The Compiler ID is a string like "GNU" or "Clang", as described by
   * https://cmake.org/cmake/help/v3.5/variable/CMAKE_LANG_COMPILER_ID.html
   */
  std::string CompilerId();
  
  /**
   * Returns the compiler version.
   *
   * This string will be something like "9.1.1".
   */
  std::string CompilerVersion();
  
  /**
   * Returns certain interesting compiler features.
   *
   * Currently this returns one of "ex" or "noex" to indicate whether or not
   * C++ exceptions are enabled.
   */
  std::string CompilerFeatures();
  
  /**
   * Returns the 4-digit year of the C++ language standard.
   */
  std::string LanguageVersion();
  
  }  // namespace internal
  GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_END
  }  // namespace cloud
  }  // namespace google
  
  #endif  // GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_INTERNAL_COMPILER_INFO_H
  