targetingpacks.targets

<Project>
  <PropertyGroup Condition="'$(DisableImplicitFrameworkReferences)' != 'true' and
                            '$(TargetFrameworkIdentifier)' == '.NETCoreApp' and
                            $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '$(NETCoreAppCurrentVersion)'))">
    <_UseLocalTargetingRuntimePack>true</_UseLocalTargetingRuntimePack>
    <EnableTargetingPackDownload>false</EnableTargetingPackDownload>
  </PropertyGroup>

  <!-- .NETCoreApp 2.x DisableImplicitAssemblyReferences support. -->
  <Choose>
    <When Condition="'$(DisableImplicitAssemblyReferences)' == 'true' and
                     '$(TargetFrameworkIdentifier)' == '.NETCoreApp' and
                     $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '3.0'))">
    <PropertyGroup>
      <MicrosoftNetCoreAppRefPackRefDir>$(PkgMicrosoft_NETCore_App)\ref\$(_ShortFrameworkIdentifier)$(_ShortFrameworkVersion)\</MicrosoftNetCoreAppRefPackRefDir>
    </PropertyGroup>
    <ItemGroup>
      <PackageReference Update="Microsoft.NETCore.App"
                        ExcludeAssets="all"
                        GeneratePathProperty="true" />
    </ItemGroup>
    </When>
  </Choose>

  <!-- Simple name references will be resolved from the targeting pack folders and should never be copied to the output. -->
  <ItemGroup>
    <Reference Update="@(Reference)">
      <Private Condition="'%(Reference.Extension)' != '.dll'">false</Private>
    </Reference>
  </ItemGroup>

  <!-- .NETCoreApp > 2.x DisableImplicitAssemblyReferences support. -->
  <Target Name="RemoveFrameworkReferences"
          BeforeTargets="_HandlePackageFileConflicts"
          AfterTargets="ResolveTargetingPackAssets"
          Condition="'$(DisableImplicitAssemblyReferences)' == 'true' and
                     '$(TargetFrameworkIdentifier)' == '.NETCoreApp' and
                     $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '3.0'))">
    <PropertyGroup>
      <MicrosoftNetCoreAppRefPackRefDir>%(ResolvedFrameworkReference.TargetingPackPath)\ref\$(_ShortFrameworkIdentifier)$(_ShortFrameworkVersion)\</MicrosoftNetCoreAppRefPackRefDir>
    </PropertyGroup>
    <ItemGroup>
      <Reference Remove="@(Reference)"
                 Condition="'%(Reference.FrameworkReferenceName)' == '$(SharedFrameworkName)'" />
    </ItemGroup>
  </Target>

  <!-- Add the resolved targeting pack to the assembly search path. -->
  <Target Name="UseTargetingPackForAssemblySearchPaths"
          BeforeTargets="ResolveAssemblyReferences;
                         DesignTimeResolveAssemblyReferences"
          Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp'">
    <PropertyGroup>
      <AssemblySearchPaths>$(AssemblySearchPaths);$(MicrosoftNetCoreAppRefPackRefDir.TrimEnd('/\'))</AssemblySearchPaths>
      <DesignTimeAssemblySearchPaths>$(DesignTimeAssemblySearchPaths);$(MicrosoftNetCoreAppRefPackRefDir.TrimEnd('/\'))</DesignTimeAssemblySearchPaths>
    </PropertyGroup>
  </Target>

  <!-- Use local targeting pack for NetCoreAppCurrent. -->
  <Target Name="UpdateTargetingAndRuntimePack"
          Condition="'$(_UseLocalTargetingRuntimePack)' == 'true'"
          AfterTargets="ResolveFrameworkReferences">
    <ItemGroup>
      <ResolvedTargetingPack Path="$(MicrosoftNetCoreAppRefPackDir.TrimEnd('/\'))"
                             NuGetPackageVersion="$(ProductVersion)"
                             PackageDirectory="$(MicrosoftNetCoreAppRefPackDir.TrimEnd('/\'))"
                             Condition="'%(ResolvedTargetingPack.RuntimeFrameworkName)' == '$(SharedFrameworkName)' and
                                        Exists('$(MicrosoftNetCoreAppRefPackDataDir)FrameworkList.xml')" />
      <ResolvedRuntimePack PackageDirectory="$(MicrosoftNetCoreAppRuntimePackDir)"
                           Condition="'%(ResolvedRuntimePack.FrameworkName)' == '$(SharedFrameworkName)'" />
      <ResolvedFrameworkReference TargetingPackPath="$(MicrosoftNetCoreAppRefPackDir.TrimEnd('/\'))"
                                  TargetingPackVersion="$(ProductVersion)"
                                  Condition="'%(Identity)' == '$(SharedFrameworkName)'" />
    </ItemGroup>
  </Target>

  <!-- Update the local targeting pack's version as it's written into the runtimeconfig.json file to select the shared framework. -->
  <Target Name="UpdateRuntimeFrameworkVersion"
          Condition="'$(_UseLocalTargetingRuntimePack)' == 'true'"
          AfterTargets="ResolveTargetingPackAssets">
    <ItemGroup>
      <RuntimeFramework Version="$(ProductVersion)"
                        Condition="'%(RuntimeFramework.FrameworkName)' == '$(SharedFrameworkName)'" />
    </ItemGroup>
  </Target>
  
  <!-- Filter out conflicting implicit assembly references. -->
  <Target Name="FilterImplicitAssemblyReferences"
          Condition="'$(DisableImplicitAssemblyReferences)' != 'true'"
          DependsOnTargets="ResolveProjectReferences"
          AfterTargets="ResolveTargetingPackAssets">
    <ItemGroup>
      <_targetingPackReferenceExclusion Include="$(TargetName)" />
      <_targetingPackReferenceExclusion Include="@(_ResolvedProjectReferencePaths->'%(Filename)')" />
      <_targetingPackReferenceExclusion Include="@(DefaultReferenceExclusion)" />
    </ItemGroup>

    <ItemGroup>
      <_targetingPackReferenceWithExclusion Include="@(Reference)">
        <Exclusion>%(_targetingPackReferenceExclusion.Identity)</Exclusion>
      </_targetingPackReferenceWithExclusion>
      <Reference Remove="@(_targetingPackReferenceWithExclusion)"
                 Condition="'%(_targetingPackReferenceWithExclusion.ExternallyResolved)' == 'true' and '%(_targetingPackReferenceWithExclusion.Filename)' == '%(_targetingPackReferenceWithExclusion.Exclusion)'" />
    </ItemGroup>
  </Target>
</Project>