名前空間 'std'の 'underlying_type_t'エラーは、プロジェクトのOSRMからexample.cppにテンプレートの名前を付けていません

Question

私はProject-OSRMのexamle.cppファイルを実行しようとしています。新しいターミナルにhere

を説明するように、ソースから

• ビルドOSRM：CD OSRM-バックエンド/例
• ターミナルに：私は、次の手順を行った端末において、cmakeの...
• ：cmakeの - ビルド。
• 端末内：sudo cmake --build。 --target
• 移動マップ請負、エンジン、抽出、パーティション、は/ usr/local// OSRMに含まは/ usr/localから utilのストレージ、をインストール/端末における
• （さもなければエラーマップは/を/ usr/localにない含む）が挙げられる：例えば-o G ++ -std = C++ 11 example.cpp

しかし、私はエラー

‘underlying_type_t’ in namespace ‘std’ does not name a template type 
    static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>> 

を取得誰も私が間違ってやっているか間違っている何が起こっているかのアイデアを持っていますし、これを解決する方法？

エラーメッセージは

In file included from /usr/local/include/engine/api/match_parameters.hpp:31:0, 
       from /usr/local/include/osrm/match_parameters.hpp:31, 
       from example.cpp:1: 
/usr/local/include/engine/api/route_parameters.hpp: In function ‘bool osrm::engine::api::operator&(osrm::engine::api::RouteParameters::AnnotationsType, osrm::engine::api::RouteParameters::AnnotationsType)’: 
/usr/local/include/engine/api/route_parameters.hpp:144:26: error: ‘underlying_type_t’ in namespace ‘std’ does not name a template type 
     static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(l 
         ^
/usr/local/include/engine/api/route_parameters.hpp:144:43: error: expected ‘>’ before ‘<’ token 
     static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(l 
             ^
/usr/local/include/engine/api/route_parameters.hpp:144:43: error: expected ‘(’ before ‘<’ token 
/usr/local/include/engine/api/route_parameters.hpp:144:43: error: expected primary-expression before ‘<’ token 
/usr/local/include/engine/api/route_parameters.hpp:144:76: error: expected primary-expression before ‘>>’ token 
    static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(lhs) & 
                    ^
/usr/local/include/engine/api/route_parameters.hpp:145:26: error: ‘underlying_type_t’ in namespace ‘std’ does not name a template type 
     static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(r 
         ^
/usr/local/include/engine/api/route_parameters.hpp:145:43: error: expected ‘>’ before ‘<’ token 
     static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(r 
             ^
/usr/local/include/engine/api/route_parameters.hpp:145:43: error: expected ‘(’ before ‘<’ token 
/usr/local/include/engine/api/route_parameters.hpp:145:43: error: expected primary-expression before ‘<’ token 
/usr/local/include/engine/api/route_parameters.hpp:145:76: error: expected primary-expression before ‘>>’ token 
    static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(rhs)); 
                    ^
/usr/local/include/engine/api/route_parameters.hpp:145:84: error: expected ‘)’ before ‘;’ token 
    static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(rhs)); 
                      ^
/usr/local/include/engine/api/route_parameters.hpp:145:84: error: expected ‘)’ before ‘;’ token 
/usr/local/include/engine/api/route_parameters.hpp: In function ‘osrm::engine::api::RouteParameters::AnnotationsType osrm::engine::api::operator|(osrm::engine::api::RouteParameters::AnnotationsType, osrm::engine::api::RouteParameters::AnnotationsType)’: 
/usr/local/include/engine/api/route_parameters.hpp:152:26: error: ‘underlying_type_t’ in namespace ‘std’ does not name a template type 
     static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(l 
         ^
/usr/local/include/engine/api/route_parameters.hpp:152:43: error: expected ‘>’ before ‘<’ token 
     static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(l 
             ^
/usr/local/include/engine/api/route_parameters.hpp:152:43: error: expected ‘(’ before ‘<’ token 
/usr/local/include/engine/api/route_parameters.hpp:152:43: error: expected primary-expression before ‘<’ token 
/usr/local/include/engine/api/route_parameters.hpp:152:76: error: expected primary-expression before ‘>>’ token 
    static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(lhs) | 
                    ^
/usr/local/include/engine/api/route_parameters.hpp:153:26: error: ‘underlying_type_t’ in namespace ‘std’ does not name a template type 
     static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(r 
         ^
/usr/local/include/engine/api/route_parameters.hpp:153:43: error: expected ‘>’ before ‘<’ token 
     static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(r 
             ^
/usr/local/include/engine/api/route_parameters.hpp:153:43: error: expected ‘(’ before ‘<’ token 
/usr/local/include/engine/api/route_parameters.hpp:153:43: error: expected primary-expression before ‘<’ token 
/usr/local/include/engine/api/route_parameters.hpp:153:76: error: expected primary-expression before ‘>>’ token 
    static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(rhs)); 
                    ^
/usr/local/include/engine/api/route_parameters.hpp:153:84: error: expected ‘)’ before ‘;’ token 
    static_cast<std::underlying_type_t<RouteParameters::AnnotationsType>>(rhs)); 
                      ^
/usr/local/include/engine/api/route_parameters.hpp:153:84: error: expected ‘)’ before ‘;’ token 

Answer 1

underlying_type_t C++ 14が必要です。それを使用できるようにするには、コンパイラに-std=c++14を渡します。