无法将本机 .dll 引用添加到源生成器项目

Question

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You can find the full source code at https://github.com/myblindy/GrimBuilding/tree/efcore (the efcore branch).

I understand that source generators can't automatically harvest dependencies from nuget packages and you have to use a clunky work-around to get it to work, and I have done so. This is my source generator project:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <LangVersion>preview</LangVersion>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.0-1.final" PrivateAssets="all" />
    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.2" PrivateAssets="all" />
    <PackageReference Include="SQLitePCLRaw.bundle_e_sqlite3" Version="2.*-*" GeneratePathProperty="true" PrivateAssets="all" />
    <PackageReference Include="Microsoft.Data.Sqlite.Core" Version="6.*-*" GeneratePathProperty="true" PrivateAssets="all" />
    <PackageReference Include="SQLitePCLRaw.lib.e_sqlite3" Version="2.*-*" GeneratePathProperty="true" PrivateAssets="all" />
    <PackageReference Include="SQLitePCLRaw.provider.e_sqlite3" Version="2.*-*" GeneratePathProperty="true" PrivateAssets="all" />
  </ItemGroup>

  <PropertyGroup>
    <GetTargetPathDependsOn>$(GetTargetPathDependsOn);GetDependencyTargetPaths</GetTargetPathDependsOn>
  </PropertyGroup>

  <Target Name="GetDependencyTargetPaths">
    <ItemGroup>
      <TargetPathWithTargetPlatformMoniker Include="$(PKGSQLitePCLRaw_bundle_e_sqlite3)\lib\netstandard2.0\SQLitePCLRaw.batteries_v2.dll" IncludeRuntimeDependency="false" />
      <TargetPathWithTargetPlatformMoniker Include="$(PKGSQLitePCLRaw_provider_e_sqlite3)\lib\netstandard2.0\SQLitePCLRaw.provider.e_sqlite3.dll" IncludeRuntimeDependency="false" />
      <TargetPathWithTargetPlatformMoniker Include="$(PKGSQLitePCLRaw_lib_e_sqlite3)\runtimes\win-x64\native\e_sqlite3.dll" IncludeRuntimeDependency="false" />
      <TargetPathWithTargetPlatformMoniker Include="$(PKGMicrosoft_Data_Sqlite_Core)\lib\netstandard2.0\Microsoft.Data.Sqlite.dll" IncludeRuntimeDependency="false" />
    </ItemGroup>
  </Target>
</Project>

Since there also isn't any transitive support, I added every nested Microsoft.Data.Sqlite package one by one, generated their path property and referenced it using TargetPathWithTargetPlatformMoniker . It all works until I get to the native e_sqlite3.dll , if I use TargetPathWithTargetPlatformMoniker with it, it tries to reference it as a managed library, and it fails as expected:

4>CSC : warning CS8034: Unable to load Analyzer assembly C:\Users\meep\.nuget\packages\sqlitepclraw.lib.e_sqlite3\2.0.5-pre20210521085756\runtimes\win-x64\native\e_sqlite3.dll : PE image doesn't contain managed metadata.

So given that the path is found, is there a different tag I can use to make the main project copy the e_sqlite3.dll file so the analyzer can use it?

Answer 1

Taken from .NET project SDK overview :

Build events

In SDK-style projects, use an MSBuild target named PreBuild or PostBuild and set the BeforeTargets property for PreBuild or the AfterTargets property for PostBuild.

 <Target Name="PreBuild" BeforeTargets="PreBuildEvent">
    <Exec Command="&quot;$(ProjectDir)PreBuildEvent.bat&quot; &quot;$(ProjectDir)..\&quot; &quot;$(ProjectDir)&quot; &quot;$(TargetDir)&quot;" />
</Target>

<Target Name="PostBuild" AfterTargets="PostBuildEvent">
   <Exec Command="echo Output written to $(TargetDir)" />
</Target>

Maybe you can move the file manually using one of these directives?

There's also this:

<Content Include="$(OutputPath)\*.dll;$(OutputPath)\*.json">
      <Pack>true</Pack>
      <PackagePath>build\</PackagePath>
</Content>

Could you move the file like that?