Roslyn 警告编译 .Net Framework 应用程序

Question

我的 C# .Net Framework 4.8 应用程序上突然出现以下警告。我已删除所有 bin 和 obj 文件夹，并尝试从包中删除并安装 DotNetCompilerPlat，但该消息不断出现。有任何想法吗？

\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.4.1.0\build\net472\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.targets(13,9): message : MSB4120: Item 'RoslynCompilerFiles' definition within target references itself via (qualified or unqualified) metadatum 'RecursiveDir'. This can lead to unintended expansion and cross-applying of pre-existing items. More info: https://aka.ms/msbuild/metadata-self-ref
\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.4.1.0\build\net472\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.targets(13,9): message : MSB4120: Item 'RoslynCompilerFiles' definition within target references itself via (qualified or unqualified) metadatum 'Filename'. This can lead to unintended expansion and cross-applying of pre-existing items. More info: https://aka.ms/msbuild/metadata-self-ref
\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.4.1.0\build\net472\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.targets(13,9): message : MSB4120: Item 'RoslynCompilerFiles' definition within target references itself via (qualified or unqualified) metadatum 'Extension'. This can lead to unintended expansion and cross-applying of pre-existing items. More info: https://aka.ms/msbuild/metadata-self-ref

（我已经从错误中删除了特定的目录信息）

单击该错误会显示下面的 XML，但这是包的一部分，因此我不知道它是如何突然显示为警告的。

\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.4.1.0\build\net472\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.targets(13,9): message : MSB4120: Item 'RoslynCompilerFiles' definition within target references itself via (qualified or unqualified) metadatum 'RecursiveDir'. This can lead to unintended expansion and cross-applying of pre-existing items. More info: https://aka.ms/msbuild/metadata-self-ref
\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.4.1.0\build\net472\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.targets(13,9): message : MSB4120: Item 'RoslynCompilerFiles' definition within target references itself via (qualified or unqualified) metadatum 'Filename'. This can lead to unintended expansion and cross-applying of pre-existing items. More info: https://aka.ms/msbuild/metadata-self-ref
\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.4.1.0\build\net472\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.targets(13,9): message : MSB4120: Item 'RoslynCompilerFiles' definition within target references itself via (qualified or unqualified) metadatum 'Extension'. This can lead to unintended expansion and cross-applying of pre-existing items. More info: https://aka.ms/msbuild/metadata-self-ref

完整的 xml 可以在这里找到：

\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.4.1.0\build\net472\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.targets

Answer 1

修复程序发布在这里：

删除这些行：

<RoslynCompilerFiles Include="$(RoslynToolPath)\*">
    <Link>roslyn\%(RecursiveDir)%(Filename)%(Extension)</Link>
</RoslynCompilerFiles>

添加这些行：

<RoslynCompilerFiles Include="$(RoslynToolPath)\**\*" />

https://github.com/aspnet/RoslynCodeDomProvider/issues/154