Add ApiCompat run

Author: wtgodbe

Directory.Build.props

@@ -11,7 +11,8 @@
 
     <IsReferenceAssemblyProject>false</IsReferenceAssemblyProject>
     <IsReferenceAssemblyProject Condition="$(MSBuildProjectDirectory.EndsWith('ref'))">true</IsReferenceAssemblyProject>
-    <OutDirName Condition="'$(IsReferenceAssemblyProject)' == 'true'">$(MSBuildProjectName)-ref</OutDirName>
+    <RefOutDirName>$(MSBuildProjectName)-ref</RefOutDirName>
+    <OutDirName Condition="'$(IsReferenceAssemblyProject)' == 'true'">$(RefOutDirName)</OutDirName>
 
     <IsBenchmarkProject Condition="$(MSBuildProjectName.EndsWith('.Performance')) OR $(RepoRelativeProjectDir.Contains('perf'))">true</IsBenchmarkProject>
     <IsSpecificationTestProject Condition="$(MSBuildProjectName.EndsWith('.Specification.Tests'))">true</IsSpecificationTestProject>

Directory.Build.targets

@@ -115,6 +115,16 @@
     <AssemblyVersion>$(AspNetCoreMajorVersion).$(AspNetCoreMinorVersion).0.0</AssemblyVersion>
   </PropertyGroup>
 
+  <PropertyGroup Label="APICompat settings">
+    <!-- Don't run APICompat on projects without ref assemblies -->
+    <RunApiCompat Condition="'$(HasReferenceAssembly)' == 'false'">false</RunApiCompat>
+    <ContractDir Condition="'$(HasReferenceAssembly)' == 'true'">$(OutputPath.Replace('$(OutDirName)','$(RefOutDirName)'))</ContractDir>
+  </PropertyGroup>
+
+  <ItemGroup Condition="'$(HasReferenceAssembly)' == 'true'">
+    <ResolvedMatchingContract Include="$(ContractDir)$(TargetFileName)" />
+  </ItemGroup>
+
   <ItemGroup>
     <KnownFrameworkReference Update="Microsoft.NETCore.App">
       <!-- Always update the 'latest version', whether the repo is servicing or not. -->

eng/Dependencies.props

@@ -28,6 +28,7 @@ and are generated based on the last package release.
     <LatestPackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(MicrosoftCodeAnalysisCSharpPackageVersion)" />
     <LatestPackageReference Include="Microsoft.CodeAnalysis.Razor" Version="$(MicrosoftCodeAnalysisRazorPackageVersion)" />
     <LatestPackageReference Include="Microsoft.CSharp" Version="$(MicrosoftCSharpPackageVersion)" />
+    <LatestPackageReference Include="Microsoft.DotNet.APICompat" Version="$(MicrosoftDotNetAPICompatPackageVersion)" />
     <LatestPackageReference Include="Microsoft.DotNet.GenAPI" Version="$(MicrosoftDotNetGenApiPackageVersion)" />
     <LatestPackageReference Include="Microsoft.DotNet.PlatformAbstractions" Version="$(MicrosoftDotNetPlatformAbstractionsPackageVersion)" />
     <LatestPackageReference Include="Microsoft.Extensions.ActivatorUtilities.Sources" Version="$(MicrosoftExtensionsActivatorUtilitiesSourcesPackageVersion)" />

eng/Version.Details.xml

@@ -417,6 +417,10 @@
       <Uri>https://github.com/aspnet/Extensions</Uri>
       <Sha>d40e21ccc14908a054b2181b1d6aeb22c49c630d</Sha>
     </Dependency>
+    <Dependency Name="Microsoft.DotNet.APICompat" Version="1.0.0-beta.19607.3">
+      <Uri>https://github.com/dotnet/arcade</Uri>
+      <Sha>4d80b9cfa53e309c8f685abff3512f60c3d8a3d1</Sha>
+    </Dependency>
     <Dependency Name="Microsoft.DotNet.GenAPI" Version="1.0.0-beta.19607.3">
       <Uri>https://github.com/dotnet/arcade</Uri>
       <Sha>4d80b9cfa53e309c8f685abff3512f60c3d8a3d1</Sha>

eng/Versions.props

@@ -63,6 +63,7 @@
   <PropertyGroup Label="Automated">
     <!-- Packages from dotnet/arcade -->
     <MicrosoftDotNetGenAPIPackageVersion>1.0.0-beta.19607.3</MicrosoftDotNetGenAPIPackageVersion>
+    <MicrosoftDotNetAPICompatPackageVersion>1.0.0-beta.19607.3</MicrosoftDotNetAPICompatPackageVersion>
     <!-- Packages from dotnet/roslyn -->
     <MicrosoftNetCompilersToolsetPackageVersion>3.4.0-beta4-19569-03</MicrosoftNetCompilersToolsetPackageVersion>
     <!-- Packages from dotnet/core-setup -->

eng/targets/CSharp.Common.props

@@ -12,6 +12,7 @@
     <PackageReference Include="MicroBuild.Core" Version="0.3.0" PrivateAssets="All" AllowExplicitReference="true" ExcludeAssets="All" />
 
     <PackageReference Condition="'$(DotNetBuildFromSource)' != 'true'" Include="Microsoft.DotNet.GenAPI" PrivateAssets="All" Version="$(MicrosoftDotNetGenApiPackageVersion)" IsImplicitlyDefined="true" />
+    <PackageReference Condition="'$(DotNetBuildFromSource)' != 'true'" Include="Microsoft.DotNet.APICompat" PrivateAssets="All" Version="$(MicrosoftDotNetAPICompatPackageVersion)" IsImplicitlyDefined="true" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(UsingMicrosoftNETSdkWeb)' == 'true' OR '$(RazorSdkCurrentVersionProps)' != ''">