eng/ApiListing.targets

<Project>

  <PropertyGroup>
    <_SupportsApiListing Condition="'$(GenerateApiListingOnBuild)' == 'true' AND '$(GenerateAPIListing)' == 'true'">true</_SupportsApiListing>
    <GenerateReferenceAssemblySource Condition="'$(GenerateApiListingOnBuild)' == 'true' AND '$(GenerateAPIListing)' == 'true'">true</GenerateReferenceAssemblySource>
  </PropertyGroup>

  <Target 
    Name="_GenerateApiListingAfterBuild"
    BeforeTargets="GenerateReferenceAssemblySource" 
    Condition="'$(_SupportsApiListing)' == 'true'">
    
    <PropertyGroup>
      <_RefSourceOutputPath>$(MSBuildThisFileDirectory)../api</_RefSourceOutputPath>
      <GenAPITargetPath>$(_RefSourceOutputPath)/$(AssemblyName).$(TargetFramework).cs</GenAPITargetPath>
    </PropertyGroup>
    <Message Text="_RefSourceOutputPath $(_RefSourceOutputPath), GenAPITargetPath $(GenAPITargetPath)" Importance="high" />
    <MakeDir Directories="$(_RefSourceOutputPath)" Condition="!Exists('$(_RefSourceOutputPath)')" />
    <Delete Files="$(GenAPITargetPath)" />
  </Target>
</Project>