dir.proj

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />

  <PropertyGroup>
    <SerializeProjects>true</SerializeProjects>
  </PropertyGroup>

  <ItemGroup>
    <Project Include="src.builds" />
    <Project Include="apicompat/apicompat.proj" />
    <Project Include="signing.builds" />
    <Project Include="netstandard/pkg/*.pkgproj" />
  </ItemGroup>

  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.traversal.targets))\dir.traversal.targets" />
  <Import Project="$(ToolsDir)\VersionTools.targets" />

  <!-- Override CleanAllProjects from dir.traversal.targets and just remove the full BinDir -->
  <Target Name="CleanAllProjects">
    <RemoveDir Directories="$(BinDir)" />
  </Target>
</Project>