build.proj

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="12.0" DefaultTargets="BuildAndTest" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

  <PropertyGroup>
    <IsTraversalBuild>true</IsTraversalBuild>
  </PropertyGroup>
  
  <Import Project="src\dir.props" />

  <ItemGroup>
    <ProjectWithoutConfiguration Include="build\dirs.proj" />
    <ProjectWithoutConfiguration Include="src\dirs.proj" />
    <ProjectWithoutConfiguration Include="Samples\dirs.proj" Condition="'$(BuildSamples)'!='false'" />
  </ItemGroup>

  <PropertyGroup>
    <!-- build\dirs.proj must be built before src\dirs.proj because the latter depends on task dlls produced by the former -->
    <BuildInParallel>false</BuildInParallel>
  </PropertyGroup>

  <Import Project="dir.targets" />
  <Import Project="dir.traversal.targets" />
  
  <!-- Ensure the BuildTools package has been restored when doing a Rebuild. This needs to happen 
       after import dir.traversal.targets. If this isn't done, Imports will fail because the Clean 
       target will load all projects. -->
  <Target Name="Rebuild" DependsOnTargets="_RestoreBuildToolsPackagesConfig;Clean;Build" />
  
  <Target Name="BulkRestoreNugetPackages"
          BeforeTargets="Build;BuildAllProjects"
          DependsOnTargets="_RestoreBuildToolsPackagesConfig"
          Condition="'$(SkipBulkRestore)' != 'true'">
  </Target>

  <!-- Create Project ItemGroup (from ProjectWithoutConfiguration) with Platform metadata -->
  <Target Name="MapProjectAndPlatform" BeforeTargets="BuildAllProjects">
    <ItemGroup>
      <Platforms Include="$(Platform)" />
      <Project Include="@(ProjectWithoutConfiguration)">
        <Properties>Platform=%(Platforms.Identity)</Properties>
      </Project>
    </ItemGroup>
    <Message Text="Building Project(s): %(Project.Identity) : Configuration=$(Configuration), %(Project.Properties) " Importance="High" />
  </Target>
</Project>