Build a net46 version of MS.NET.SDK.Razor to support Omnisharp in VSC…

…ode.

This also requires building some runtime and MSBuild packages as net46.  Unfortunately we can't rely on the targeting packs for these because source-build does produce the packages but without the net46 runtime currently.

patches/msbuild/0005-Re-enable-full-fx-builds-in-source-build.patch

@@ -0,0 +1,78 @@
+From 9b33580763b2891002fcd1e53ec3101b3f381fca Mon Sep 17 00:00:00 2001
+From: Chris Rummel <crummel@microsoft.com>
+Date: Fri, 21 May 2021 02:36:31 -0500
+Subject: [PATCH 5/5] Re-enable full fx builds in source-build.
+
+This also adds the net46 framework to support AspNetCore building a
+net46 version of Microsoft.NET.Sdk.Razor.dll, which is required to
+support Omnisharp in VSCode.
+
+---
+ Directory.Build.props                          | 2 +-
+ eng/Packages.props                             | 1 +
+ src/Directory.Build.props                      | 3 +--
+ src/Utilities/Microsoft.Build.Utilities.csproj | 4 ++++
+ 4 files changed, 7 insertions(+), 3 deletions(-)
+
+diff --git a/Directory.Build.props b/Directory.Build.props
+index 1683a4c9..4e62284c 100644
+--- a/Directory.Build.props
++++ b/Directory.Build.props
+@@ -13,7 +13,7 @@
+   </PropertyGroup>
+
+   <PropertyGroup>
+-    <FullFrameworkTFM>net472</FullFrameworkTFM>
++    <FullFrameworkTFM>net472;net46</FullFrameworkTFM>
+   </PropertyGroup>
+
+   <PropertyGroup>
+diff --git a/eng/Packages.props b/eng/Packages.props
+index 6b716285..c38ee030 100644
+--- a/eng/Packages.props
++++ b/eng/Packages.props
+@@ -40,6 +40,7 @@
+     <PackageReference Update="System.Text.Json" Version="4.7.0" />
+     <PackageReference Update="System.Threading.Tasks.Dataflow" Version="4.9.0" />
+     <PackageReference Update="System.Threading.Thread" Version="4.0.0" />
++    <PackageReference Update="System.ValueTuple" Version="4.5.0" />
+     <PackageReference Update="System.Xml.XPath" Version="4.3.0" />
+     <PackageReference Update="xunit.assert" Version="$(XUnitVersion)" />
+     <PackageReference Update="xunit.console" Version="$(XUnitVersion)" />
+diff --git a/src/Directory.Build.props b/src/Directory.Build.props
+index 54b620c6..0100afd5 100644
+--- a/src/Directory.Build.props
++++ b/src/Directory.Build.props
+@@ -27,13 +27,12 @@
+
+     <!-- Defaults for target frameworks and architecture -->
+     <LibraryTargetFrameworks>$(FullFrameworkTFM);netstandard2.0</LibraryTargetFrameworks>
+-    <LibraryTargetFrameworks Condition="'$(DotNetBuildFromSource)' == 'true'">netstandard2.0</LibraryTargetFrameworks>
+     <LibraryTargetFrameworks Condition="'$(MonoBuild)'=='true'">$(FullFrameworkTFM)</LibraryTargetFrameworks>
+     <PlatformTarget>AnyCPU</PlatformTarget>
+
+     <!-- Target frameworks for Exe and unit test projects (ie projects with runtime output) -->
+     <RuntimeOutputTargetFrameworks>netcoreapp2.1</RuntimeOutputTargetFrameworks>
+-    <RuntimeOutputTargetFrameworks Condition="'$(OsEnvironment)'=='windows' and '$(DotNetBuildFromSource)' != 'true'">$(FullFrameworkTFM);$(RuntimeOutputTargetFrameworks)</RuntimeOutputTargetFrameworks>
++    <RuntimeOutputTargetFrameworks Condition="'$(OsEnvironment)'=='windows'">$(FullFrameworkTFM);$(RuntimeOutputTargetFrameworks)</RuntimeOutputTargetFrameworks>
+     <RuntimeOutputTargetFrameworks Condition="'$(MonoBuild)' == 'true'">$(FullFrameworkTFM)</RuntimeOutputTargetFrameworks>
+
+     <!-- Don't automatically append target framework to output path, since we want to put the Platform Target beforehand, if it's not AnyCPU -->
+diff --git a/src/Utilities/Microsoft.Build.Utilities.csproj b/src/Utilities/Microsoft.Build.Utilities.csproj
+index 840d2bcc..78f84687 100644
+--- a/src/Utilities/Microsoft.Build.Utilities.csproj
++++ b/src/Utilities/Microsoft.Build.Utilities.csproj
+@@ -39,6 +39,10 @@
+     <PackageReference Include="Microsoft.Win32.Registry" />
+   </ItemGroup>
+
++  <ItemGroup Condition="'$(TargetFramework)' == 'net46'">
++    <PackageReference Include="System.ValueTuple" />
++  </ItemGroup>
++
+   <ItemGroup Label="Shared Code">
+     <Compile Include="..\Shared\AssemblyFolders\AssemblyFoldersEx.cs">
+       <Link>Shared\AssemblyFolders\AssemblyFoldersEx.cs</Link>
+-- 
+2.18.0
+

repos/runtime.common.props

@@ -43,6 +43,7 @@
     <!-- PGO is disabled for now because the profiler only runs on Windows: https://github.com/dotnet/source-build/issues/247 -->
     <CoreClrBuildArguments>$(CoreClrBuildArguments) /p:NoPgoOptimize=true</CoreClrBuildArguments>
     <CoreClrBuildArguments>$(CoreClrBuildArguments) /p:KeepNativeSymbols=true</CoreClrBuildArguments>
+    <CoreClrBuildArguments>$(CoreClrBuildArguments) /p:BuildAllConfigurations=true</CoreClrBuildArguments>
     <CoreClrBuildArguments Condition="'$(TargetOS)' != 'OSX'">$(CoreClrBuildArguments) /p:RuntimeOS=$(OverrideTargetRid.Substring(0, $(OverrideTargetRid.IndexOf("-"))))</CoreClrBuildArguments>
     <CoreClrBuildArguments Condition="'$(TargetOS)' == 'OSX'">$(CoreClrBuildArguments) /p:RuntimeOS=$(OverrideTargetRid)</CoreClrBuildArguments>
 
@@ -62,6 +63,7 @@
     <LibrariesBuildArguments>$(LibrariesBuildArguments) /p:BuildAllPackages=true</LibrariesBuildArguments>
     <LibrariesBuildArguments>$(LibrariesBuildArguments) /p:BuildAllOOBPackages=true</LibrariesBuildArguments>
     <LibrariesBuildArguments>$(LibrariesBuildArguments) /p:KeepNativeSymbols=true</LibrariesBuildArguments>
+    <LibrariesBuildArguments>$(LibrariesBuildArguments) /p:BuildAllConfigurations=true</LibrariesBuildArguments>
     <LibrariesBuildArguments>$(LibrariesBuildArguments) /p:BuiltSdkPackageOverride=""</LibrariesBuildArguments>    <!-- Clear PackageOverride for Libraries - it only applies to coreclr -->
     <LibrariesBuildArguments Condition="'$(OfflineBuild)' == 'true'">$(LibrariesBuildArguments) /p:MicrosoftNETCoreDotNetHostPackageVersion=$(DOTNET_HOST_BOOTSTRAP_VERSION)</LibrariesBuildArguments>
     <LibrariesBuildArguments Condition="'$(OfflineBuild)' == 'true'">$(LibrariesBuildArguments) /p:MicrosoftNETCoreDotNetHostPolicyPackageVersion=$(DOTNET_HOST_BOOTSTRAP_VERSION)</LibrariesBuildArguments>
@@ -75,6 +77,7 @@
     <InstallerBuildArguments Condition="'$(UseSystemLibunwind)' == 'true'">$(InstallerBuildArguments) -cmakeargs -DCLR_CMAKE_USE_SYSTEM_LIBUNWIND=TRUE</InstallerBuildArguments>
     <InstallerBuildArguments Condition="$(Platform.Contains('arm')) AND '$(BuildArchitecture)' != 'arm64'">$(InstallerBuildArguments) /p:TargetArchitecture=$(Platform) /p:DisableCrossgen=true /p:CrossBuild=true</InstallerBuildArguments>
     <InstallerBuildArguments>$(InstallerBuildArguments) /p:BuildDebPackage=false</InstallerBuildArguments>
+    <InstallerBuildArguments>$(InstallerBuildArguments) /p:BuildAllBuildAllConfigurations=true</InstallerBuildArguments>
     <InstallerBuildArguments>$(InstallerBuildArguments) /p:BuildAllPackages=true</InstallerBuildArguments>
     <InstallerBuildArguments>$(InstallerBuildArguments) /p:RestoreAllBuildRids=false</InstallerBuildArguments>
     <InstallerBuildArguments>$(InstallerBuildArguments) /p:OutputRid=$(OverrideTargetRid)</InstallerBuildArguments>