Visual studio 2017 roslyn编译器用于vs2017安装

Visual studio 2017 roslyn编译器用于vs2017安装,visual-studio-2017,Visual Studio 2017,如何为vs2017安装roslyn编译器? c:\Program Files(x86)\Microsoft Visual Studio\2017\MSBuild\15.0\Bin\Roslyn\Microsoft.CSharp.Core.targets上缺少的文件出错,该文件可能重复

如何为vs2017安装roslyn编译器? c:\Program Files(x86)\Microsoft Visual Studio\2017\MSBuild\15.0\Bin\Roslyn\Microsoft.CSharp.Core.targets上缺少的文件出错,该文件可能重复