Add Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk package

Arcade.sln

@@ -95,6 +95,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.DotNet.NuGetRepac
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.DotNet.Build.Tasks.Feed.Tests", "src\Microsoft.DotNet.Build.Tasks.Feed.Tests\Microsoft.DotNet.Build.Tasks.Feed.Tests.csproj", "{6E19C6B6-4ADF-4DD6-86CC-6C1624BCDB71}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk", "src\Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk\Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk.csproj", "{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -593,6 +595,18 @@ Global
 		{6E19C6B6-4ADF-4DD6-86CC-6C1624BCDB71}.Release|x64.Build.0 = Release|Any CPU
 		{6E19C6B6-4ADF-4DD6-86CC-6C1624BCDB71}.Release|x86.ActiveCfg = Release|Any CPU
 		{6E19C6B6-4ADF-4DD6-86CC-6C1624BCDB71}.Release|x86.Build.0 = Release|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Debug|x64.Build.0 = Debug|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Debug|x86.Build.0 = Debug|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Release|x64.ActiveCfg = Release|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Release|x64.Build.0 = Release|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Release|x86.ActiveCfg = Release|Any CPU
+		{62B929C4-3D15-4D43-AEFC-2D0BD3CFC20D}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

src/Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk/Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk.csproj

@@ -0,0 +1,44 @@
+<!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. See the LICENSE file in the project root for more information. -->
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFrameworks>net472;netcoreapp2.1</TargetFrameworks>
+    <LangVersion>preview</LangVersion>
+    <ExcludeFromSourceBuild>false</ExcludeFromSourceBuild>
+
+    <IsPackable>true</IsPackable>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+
+    <Description>Common toolset for building shared frameworks and framework packs.</Description>
+    <PackageType>MSBuildSdk</PackageType>
+
+    <EnableDefaultNoneItems>false</EnableDefaultNoneItems>
+    <EnableGeneratedPackageContent>false</EnableGeneratedPackageContent>
+    <NoWarn>$(NoWarn);3021;NU5105</NoWarn>
+
+    <DefaultItemExcludes Condition="'$(TargetFramework)' != 'net472'">**/*.Desktop.*</DefaultItemExcludes>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Build.Tasks.Core" Version="$(MicrosoftBuildTasksCoreVersion)" />
+    <PackageReference Include="Microsoft.Build" Version="$(MicrosoftBuildVersion)" />
+    <PackageReference Include="Microsoft.Extensions.DependencyModel" Version="$(MicrosoftExtensionsDependencyModelVersion)" />
+    <PackageReference Include="NuGet.Packaging" Version="$(NuGetVersion)" />
+    <PackageReference Include="NuGet.ProjectModel" Version="$(NuGetVersion)" />
+    <PackageReference Include="NuGet.Versioning" Version="$(NuGetVersion)" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="sdk/**/*.*" Pack="true">
+      <PackagePath>sdk/%(RecursiveDir)%(Filename)%(Extension)</PackagePath>
+    </None>
+    <None Include="targets/**/*.*" Pack="true">
+      <PackagePath>targets/%(RecursiveDir)%(Filename)%(Extension)</PackagePath>
+    </None>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Include="..\Common\AssemblyResolution.cs" Link="src\AssemblyResolution.cs" />
+  </ItemGroup>
+
+  <Import Project="$(RepoRoot)eng\BuildTask.targets" />
+</Project>

src/Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk/README.md

@@ -0,0 +1,29 @@
+# Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk
+
+Common toolset for building shared frameworks and framework packs. Handles
+projects with extensions:
+
+* `depproj`
+  * Restores dependencies and run crossgen.
+* `pkgproj`
+  * Generates NuGet packages and various installers: Windows `msi`, macOS `pkg`,
+    Debian packages, RPM packages, and the `tar.gz` and `zip` archives.
+* `sfxproj`
+  * Generates the shared framework ("runtime") itself, its installers, and its
+    compressed archives.
+* `bundleproj`
+  * Generates bundle installers: Windows `exe`.
+  * There is a macOS bundle `pkg`, however it is not produced by this package as
+    of writing.
+
+Framework packs are targeting packs, apphost packs, and runtime packs. See the
+design at https://github.com/dotnet/designs/pull/50.
+
+This package is a migration of tooling previously living in the
+[Core-Setup](https://github.com/dotnet/core-setup) repository, without any
+significant improvements.
+[arcade#2704](https://github.com/dotnet/arcade/issues/2704) tracks improving it
+to the point where it's reasonable to onboard new repos.
+
+This package depends on `Microsoft.DotNet.Build.Tasks.Packaging` for NuGet
+package creation and validation tooling.

src/Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk/sdk/Sdk.props

@@ -0,0 +1,26 @@
+<Project>
+
+  <!--
+    Like the Arcade SDK, this SDK doesn't import its dependencies here like a typical SDK would.
+    Rather, the repo must import the Arcade SDK and the Arcade SDK's dependencies.
+
+    See https://github.com/dotnet/arcade/blob/238f1bbb23ba67616818d0b242c5b55a18edec55/Documentation/ArcadeSdk.md#directorybuildprops
+  -->
+
+  <PropertyGroup Condition="'$(DotNetBuildTasksSharedFrameworkTaskDir)' == ''">
+    <DotNetBuildTasksSharedFrameworkTaskDir Condition="'$(MSBuildRuntimeType)' == 'core'">$(MSBuildThisFileDirectory)../tools/netcoreapp2.1/</DotNetBuildTasksSharedFrameworkTaskDir>
+    <DotNetBuildTasksSharedFrameworkTaskDir Condition="'$(MSBuildRuntimeType)' != 'core'">$(MSBuildThisFileDirectory)../tools/net472/</DotNetBuildTasksSharedFrameworkTaskDir>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <DotNetBuildTasksSharedFrameworkTaskFile>$(DotNetBuildTasksSharedFrameworkTaskDir)Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk.dll</DotNetBuildTasksSharedFrameworkTaskFile>
+  </PropertyGroup>
+
+  <!-- Allow setting a property to use targets from a development dir for faster iteration. -->
+  <PropertyGroup>
+    <DotNetBuildTasksSharedFrameworkMSBuildDir Condition="'$(DotNetBuildTasksSharedFrameworkMSBuildDir)' == ''">$(MSBuildThisFileDirectory)..\targets\</DotNetBuildTasksSharedFrameworkMSBuildDir>
+  </PropertyGroup>
+
+  <Import Project="$(DotNetBuildTasksSharedFrameworkMSBuildDir)packaging-tools.props" />
+
+</Project>

src/Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk/sdk/Sdk.targets

@@ -0,0 +1,12 @@
+<Project>
+
+  <!--
+    Like the Arcade SDK, this SDK doesn't import its dependencies here like a typical SDK would.
+    Rather, the repo must import the Arcade SDK and the Arcade SDK's dependencies.
+
+    See https://github.com/dotnet/arcade/blob/238f1bbb23ba67616818d0b242c5b55a18edec55/Documentation/ArcadeSdk.md#directorybuildprops
+  -->
+
+  <Import Project="$(DotNetBuildTasksSharedFrameworkMSBuildDir)packaging-tools.targets" />
+
+</Project>