aspnetcore/eng/targets/ResolveReferences.targets

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<!--
The targets in this file are used to implement custom <Reference> resolution.
For more details, see /docs/ReferenceResolution.md.
Properties which can be set by projects. If unset, these will be inferred.
* UseLatestPackageReferences = resolve `<Reference>` items to the latest version of PackageReferences in eng/Dependencies.props.
* UseProjectReferences = prefer project references to packages
* IsProjectReferenceProvider = when true, the assembly in this project should be available as a ProjectReferenceProvider (see below).
Items used by the resolution strategy:
* BaselinePackageReference = a list of packages that were reference in the last release of the project currently building
* LatestPackageReference = a list of the latest versions of packages
* Reference = a list of the references which are needed for compilation or runtime
* ProjectReferenceProvider = a list which maps of assembly names to the project file that produces it
-->
<Project>
<PropertyGroup>
<EnableCustomReferenceResolution
Condition="'$(EnableCustomReferenceResolution)' == '' AND ('$(DotNetBuildFromSource)' != 'true' OR '$(ExcludeFromSourceBuild)' != 'true')">true</EnableCustomReferenceResolution>
<ResolveReferencesDependsOn>
ResolveCustomReferences;
$(ResolveReferencesDependsOn);
</ResolveReferencesDependsOn>
</PropertyGroup>
<PropertyGroup>
<!--
Projects should only use the latest package references when:
* preparing a new major or minor release (i.e. a non-servicing builds)
* when a project is a test or sample project
* when a package is releasing a new patch (we like to update external dependencies in patches when possible)
-->
<UseLatestPackageReferences
Condition=" '$(UseLatestPackageReferences)' == '' AND '$(IsServicingBuild)' != 'true' ">true</UseLatestPackageReferences>
<UseLatestPackageReferences
Condition=" '$(UseLatestPackageReferences)' == '' AND '$(IsImplementationProject)' != 'true' ">true</UseLatestPackageReferences>
<UseLatestPackageReferences
Condition=" '$(UseLatestPackageReferences)' == '' AND '$(IsImplementationProject)' == 'true' AND '$(IsPackable)' == 'true' ">true</UseLatestPackageReferences>
<UseLatestPackageReferences
Condition=" '$(UseLatestPackageReferences)' == '' ">false</UseLatestPackageReferences>
<!--
Projects should only use the project references instead of baseline package references when:
* preparing a new major or minor release (i.e. a non-servicing builds)
* when a project is a test or sample project
We don't use project references between components in servicing builds between compontents to preserve the baseline as much as possible.
-->
<UseProjectReferences
Condition=" '$(UseProjectReferences)' == '' AND '$(IsServicingBuild)' != 'true' ">true</UseProjectReferences>
<UseProjectReferences
Condition=" '$(UseProjectReferences)' == '' AND '$(IsImplementationProject)' != 'true' ">true</UseProjectReferences>
<UseProjectReferences Condition=" '$(UseProjectReferences)' == '' ">false</UseProjectReferences>
</PropertyGroup>
<ItemDefinitionGroup>
<Reference>
<IsSharedSource></IsSharedSource>
</Reference>
</ItemDefinitionGroup>
<ItemGroup Condition="'$(EnableCustomReferenceResolution)' == 'true'">
<Reference Update="@(Reference)">
<IsSharedSource
Condition="'%(IsSharedSource)' == '' AND $([System.String]::new('%(Identity)').EndsWith('.Sources'))">true</IsSharedSource>
</Reference>
<!-- Packages which are implicitly defined by the .NET Core SDK. -->
<_ImplicitPackageReference Include="@(PackageReference->WithMetadataValue('IsImplicitlyDefined', 'true'))" />
<!-- Capture a list of references which were set explicitly in the project. -->
<_AllowedExplicitPackageReference Include="@(PackageReference->WithMetadataValue('AllowExplicitReference', 'true'))" />
<_AllowedExplicitPackageReference Include="FSharp.Core" Condition="'$(MSBuildProjectExtension)' == '.fsproj'" />
<_ExplicitPackageReference Include="@(PackageReference)" Exclude="@(_ImplicitPackageReference);@(_AllowedExplicitPackageReference)" />
<_UnusedProjectReferenceProvider Include="@(ProjectReferenceProvider)" Exclude="@(Reference)" />
<_CompilationOnlyReference Condition="'$(TargetFramework)' == 'netstandard2.0'"
Include="@(Reference->WithMetadataValue('NuGetPackageId','NETStandard.Library'))" />
<_InvalidReferenceToNonSharedFxAssembly Condition="'$(IsAspNetCoreApp)' == 'true'"
Include="@(Reference)"
Exclude="
@(AspNetCoreAppReference);
@(AspNetCoreAppReferenceAndPackage);
@(ExternalAspNetCoreAppReference);
@(_CompilationOnlyReference);
@(Reference->WithMetadataValue('IsSharedSource', 'true'));
@(Reference->WithMetadataValue('PrivateAssets', 'All'))" />
<_OriginalReferences Include="@(Reference)" />
<!--
Turn Reference items into a ProjectReference when UseProjectReferences is true.
Order matters. This comes before package resolution because projects should be used when possible instead of packages.
-->
<_ProjectReferenceByAssemblyName Condition="'$(UseProjectReferences)' == 'true'"
Include="@(ProjectReferenceProvider)"
Exclude="@(_UnusedProjectReferenceProvider)" />
<ProjectReference Include="@(_ProjectReferenceByAssemblyName->'%(ProjectPath)')" />
<Reference Remove="@(_ProjectReferenceByAssemblyName)" />
</ItemGroup>
<!--
This target resolves remaining Referene items to Packages, if possible. If not, they are left as Reference items fo the SDK to resolve.
This target helps ensure projects within the shared framework do no unintentionally add new references,
and that assemblies outside the shared framework reference the framework as a whole instead of using
individual assemblies.
-->
<Target Name="_CheckForReferenceBoundaries" BeforeTargets="CollectPackageReferences;ResolveReferences">
<Error
Condition="@(_InvalidReferenceToSharedFxOnlyAssembly->Count()) != 0"
Text="Cannot reference &quot;%(_InvalidReferenceToSharedFxOnlyAssembly.Identity)&quot; directly because it is part of the shared framework and this project is not. Use &lt;FrameworkReference Include=&quot;Microsoft.AspNetCore.App&quot; /&gt; instead." />
<Error
Condition="@(_InvalidReferenceToNonSharedFxAssembly->Count()) != 0 AND '$(TargetFramework)' == '$(DefaultNetCoreTargetFramework)'"
Text="Cannot reference &quot;%(_InvalidReferenceToNonSharedFxAssembly.Identity)&quot;. This dependency is not in the shared framework. See docs/SharedFramework.md for instructions on how to modify what is in the shared framework." />
</Target>
<Target Name="_WarnAboutRedundantRef" AfterTargets="ResolveFrameworkReferences;ProcessFrameworkReferences">
<Warning
Condition="@(FrameworkReference->WithMetadataValue('Identity', 'Microsoft.AspNetCore.App')->Count()) &gt; 1"
Text="Redundant &lt;FrameworkReference&gt;. If you have an explicit item in the project file, you might be able to remove it. Some SDKs, like Microsoft.NET.Sdk.Web, add this implicitly." />
</Target>
<!--
This target resolves remaining Referene items to Packages, if possible. If not, they are left as Reference items fo the SDK to resolve.
This executes on NuGet restore and during DesignTimeBuild. It should not run in the outer, cross-targeting build.
-->
<Target Name="ResolveCustomReferences"
BeforeTargets="CheckForImplicitPackageReferenceOverrides;CollectPackageReferences;ResolvePackageAssets"
Condition=" '$(TargetFramework)' != '' AND '$(EnableCustomReferenceResolution)' == 'true' ">
<ItemGroup>
<!-- Ensure only content asset are consumed from .Sources packages -->
<Reference>
<IncludeAssets Condition="'%(IsSharedSource)' == 'true'">ContentFiles;Build</IncludeAssets>
<PrivateAssets Condition="'%(IsSharedSource)' == 'true'">All</PrivateAssets>
</Reference>
<!-- Identify if any references were present in the last release of this package, but have been removed. -->
<UnusedBaselinePackageReference Include="@(BaselinePackageReference)"
Exclude="@(Reference);@(_ProjectReferenceByAssemblyName);@(PackageReference)" />
<!-- Only allow suppressing baseline changes in non-servicing builds. -->
<UnusedBaselinePackageReference Remove="@(SuppressBaselineReference)" Condition="'$(IsServicingBuild)' != 'true'"/>
</ItemGroup>
<JoinItems Left="@(Reference)" Right="@(LatestPackageReference)" LeftMetadata="*" RightMetadata="Version"
Condition=" '$(UseLatestPackageReferences)' == 'true' ">
<Output TaskParameter="JoinResult" ItemName="_LatestPackageReferenceWithVersion" />
</JoinItems>
<ItemGroup>
<PackageReference Include="@(_LatestPackageReferenceWithVersion)" IsImplicitlyDefined="true" />
<!-- Remove reference items that have been resolved to a LatestPackageReference item. -->
<Reference Remove="@(_LatestPackageReferenceWithVersion)" />
</ItemGroup>
<!-- Resolve references from BaselinePackageReference for servicing builds in corner cases. May be unused. -->
<JoinItems Left="@(Reference)" Right="@(BaselinePackageReference)" LeftMetadata="*" RightMetadata="Version"
Condition=" '$(IsServicingBuild)' == 'true' OR '$(UseLatestPackageReferences)' != 'true' ">
<Output TaskParameter="JoinResult" ItemName="_BaselinePackageReferenceWithVersion" />
</JoinItems>
<ItemGroup>
<PackageReference Include="@(_BaselinePackageReferenceWithVersion)" IsImplicitlyDefined="true" />
<!-- Remove reference items that have been resolved to a BaselinePackageReference item. -->
<Reference Remove="@(_BaselinePackageReferenceWithVersion)" />
</ItemGroup>
<!-- For PrivateAssets=All references, like .Sources packages, fallback to LatestPackageReferences. -->
<JoinItems Left="@(Reference->WithMetadataValue('PrivateAssets', 'All'))"
Right="@(LatestPackageReference)"
LeftMetadata="*"
RightMetadata="Version">
<Output TaskParameter="JoinResult" ItemName="_PrivatePackageReferenceWithVersion" />
</JoinItems>
<ItemGroup>
<PackageReference Include="@(_PrivatePackageReferenceWithVersion)" IsImplicitlyDefined="true" />
<!-- Remove reference items that have been resolved to a LatestPackageReference item. -->
<Reference Remove="@(_PrivatePackageReferenceWithVersion)" />
<!-- Free up memory for unnecessary items -->
<_LatestPackageReferenceWithVersion Remove="@(_LatestPackageReferenceWithVersion)" />
<_BaselinePackageReferenceWithVersion Remove="@(_BaselinePackageReferenceWithVersion)" />
<_PrivatePackageReferenceWithVersion Remove="@(_PrivatePackageReferenceWithVersion)" />
<_ImplicitPackageReference Remove="@(_ImplicitPackageReference)" />
</ItemGroup>
<Error
Condition="'$(DisablePackageReferenceRestrictions)' != 'true' AND @(_ExplicitPackageReference->Count()) != 0"
Text="PackageReference items are not allowed. Use &lt;Reference&gt; instead to replace the reference to @(_ExplicitPackageReference, ', '). See docs/ReferenceResolution.md for more details." />
<ItemGroup>
<_ExplicitPackageReference Remove="@(_ExplicitPackageReference)" />
</ItemGroup>
<Error
Condition="'$(TargetFrameworkIdentifier)' != '.NETFramework' AND '%(Reference.Identity)' != '' AND ! Exists('%(Reference.Identity)') AND '$(DisablePackageReferenceRestrictions)' != 'true'"
Code="MSB3245"
Text="Could not resolve this reference. Could not locate the package or project for &quot;%(Reference.Identity)&quot;. Did you update baselines and dependencies lists? See docs/ReferenceResolution.md for more details." />
</Target>
<!--
Muck with @(ResolvedCompileFileDefinitions) items between generation and use in order to compile against RTM lib/
or ref/ assemblies. The approach works for all TFMs because it happens after a specific assembly is chosen for
compilation; no need to restrict this to (say) the default TFM.
Condition checks for RTMVersions.csproj.nuget.g.props file only to ensure restore operation is complete.
This target could get confused if the layout changes for one of the dozen special-cased packages during servicing.
E.g. ResolvePackageAssets picks a compatible assembly from the 5.0.1 package and _UseRTMReferenceAssemblies
changes the path to one not present in the 5.0.0 package. Fortunately, this will break the build with complaints
about the "invalid strong name".
-->
<Target Name="_UseRTMReferenceAssemblies"
Condition=" '$(EnableCustomReferenceResolution)' == 'true' AND EXISTS('$(RepoRoot)eng\RTMVersions\obj\RTMVersions.csproj.nuget.g.props') "
BeforeTargets="GenerateBuildDependencyFile;GeneratePublishDependencyFile;ILLink;ResolveLockFileReferences"
DependsOnTargets="ResolvePackageAssets">
<JoinItems Left="@(ResolvedCompileFileDefinitions)"
Right="@(LatestPackageReference->HasMetadata('RTMVersion'))"
LeftKey="Filename"
ItemSpecToUse="Left"
LeftMetadata="*"
RightMetadata="RTMVersion;Version">
<Output TaskParameter="JoinResult" ItemName="_ResolvedCompileFileDefinitionsToChange" />
</JoinItems>
<ItemGroup>
<ResolvedCompileFileDefinitions Remove="@(_ResolvedCompileFileDefinitionsToChange)" />
<!-- Ignore %(NuGetPackageVersion) when doing substitution because some projects use downlevel packages. -->
<_ResolvedCompileFileDefinitionsToChange
HintPath="$([System.String]::new('%(Identity)').Replace('\%(Version)\', '\%(RTMVersion)\').Replace('/%(Version)/', '/%(RTMVersion)/'))" />
<ResolvedCompileFileDefinitions Include="@(_ResolvedCompileFileDefinitionsToChange -> '%(HintPath)')" />
<_ResolvedCompileFileDefinitionsToChange Remove="@(_ResolvedCompileFileDefinitionsToChange)" />
</ItemGroup>
</Target>
<PropertyGroup>
<_CompileTfmUsingReferenceAssemblies>false</_CompileTfmUsingReferenceAssemblies>
<_CompileTfmUsingReferenceAssemblies
Condition=" '$(CompileUsingReferenceAssemblies)' != false AND '$(TargetFramework)' == '$(DefaultNetCoreTargetFramework)' ">true</_CompileTfmUsingReferenceAssemblies>
</PropertyGroup>
<!--
If we have a ref/ assembly from dotnet/runtime for an Extension package, use that when compiling but do not reference its assemblies.
-->
<ItemGroup
Condition=" $(_CompileTfmUsingReferenceAssemblies) OR ('$(IsTargetingPackBuilding)' != 'false' AND '$(MSBuildProjectName)' == 'Microsoft.AspNetCore.App.Ref') ">
<PackageReference Include="Microsoft.Extensions.Internal.Transport"
Version="$(MicrosoftExtensionsInternalTransportPackageVersion)"
IsImplicitlyDefined="true"
IncludeAssets="Compile"
PrivateAssets="All"
GeneratePathProperty="true" />
</ItemGroup>
<!-- These targets are used to generate the map of assembly name to project files. See also the /t:GenerateProjectList target in build/repo.targets. -->
<Target Name="GetReferencesProvided" Returns="@(ProvidesReference)">
<ItemGroup>
<_TargetFramework Remove="@(_TargetFramework)" />
<_TargetFramework Include="$(TargetFramework)" Condition="'$(TargetFramework)' != '' "/>
<_TargetFramework Include="$(TargetFrameworks)" Condition="'$(TargetFramework)' == '' "/>
</ItemGroup>
<MSBuild Projects="$(MSBuildProjectFullPath)"
Targets="_GetReferencesProvided"
Properties="TargetFramework=%(_TargetFramework.Identity)">
<Output TaskParameter="TargetOutputs" ItemName="ProvidesReference" />
</MSBuild>
</Target>
<Target Name="_GetReferencesProvided" Returns="@(ProvidesReference)">
<Error
Condition=" '$(IsAspNetCoreApp)' == 'true' AND '$(IsImplementationProject)' == 'true' AND
!$(HasReferenceAssembly) AND '$(TargetFramework)' == '$(DefaultNetCoreTargetFramework)' "
Text="All assemblies which have set IsAspNetCoreApp=true should produce a reference assembly for default TFM." />
<Error Condition=" '$(IsAspNetCoreApp)' == 'true' AND '$(IsImplementationProject)' != 'true' "
Text="Only implementation projects should set IsAspNetCoreApp=true." />
<Error Condition=" '$(IsAspNetCoreApp)' != 'true' AND $(HasReferenceAssembly) "
Text="Only projects in the shared framework i.e. IsAspNetCoreApp==true should produce a reference assembly." />
<ItemGroup Condition=" '$(IsProjectReferenceProvider)' == 'true' ">
<ProvidesReference Include="$(AssemblyName)">
<IsAspNetCoreApp>$([MSBuild]::ValueOrDefault($(IsAspNetCoreApp),'false'))</IsAspNetCoreApp>
<IsPackable>$([MSBuild]::ValueOrDefault($(IsPackable),'false'))</IsPackable>
<ProjectFileRelativePath>$([MSBuild]::MakeRelative($(RepoRoot), $(MSBuildProjectFullPath)))</ProjectFileRelativePath>
</ProvidesReference>
</ItemGroup>
</Target>
<!-- This is used by the eng/scripts/AddAllProjectRefsToSolution.ps1 script to traverse the ProjectRef graph -->
<PropertyGroup>
<_CustomCollectProjectReferenceDependsOn Condition="'$(TargetFramework)' != ''">ResolveProjectReferences</_CustomCollectProjectReferenceDependsOn>
</PropertyGroup>
<Target Name="_CustomCollectProjectReference" DependsOnTargets="$(_CustomCollectProjectReferenceDependsOn)" Returns="$(MSBuildProjectFullPath);@(_MSBuildProjectReferenceExistent)">
<ItemGroup>
<_TargetFrameworks Include="$(TargetFrameworks)" />
</ItemGroup>
<MSBuild Condition="'$(TargetFramework)' == ''"
Targets="_CustomCollectProjectReference"
BuildInParallel="true"
Projects="$(MSBuildProjectFullPath)"
Properties="TargetFramework=%(_TargetFrameworks.Identity)"
RebaseOutputs="True">
<Output TaskParameter="TargetOutputs" ItemName="_MSBuildProjectReferenceExistent" />
</MSBuild>
<MSBuild Condition="'$(TargetFramework)' != ''"
Targets="_CustomCollectProjectReference"
BuildInParallel="true"
SkipNonexistentTargets="true"
Projects="@(_MSBuildProjectReferenceExistent)"
RebaseOutputs="True">
<Output TaskParameter="TargetOutputs" ItemName="_MSBuildProjectReferenceExistent" />
</MSBuild>
</Target>
</Project>