text: //*****************************************************************************
  // Copyright 2017-2021 Intel Corporation
  //
  // 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.
  //*****************************************************************************
  
  #pragma once
  
  #include <cstdlib>
  
  #include "ngraph/env_util.hpp"
  
  #include "ngraph/ngraph_visibility.hpp"
  
  namespace ngraph
  {
      static bool s_provenance_enabled = getenv_bool("NGRAPH_PROVENANCE_ENABLE");
  
      NGRAPH_API
      void set_provenance_enabled(bool enabled);
      NGRAPH_API
      bool get_provenance_enabled();
  }
  