Directory.Build.targets

<Project>
	<Target Name="DetermineInformationalVersion" BeforeTargets="BeforeBuild" Condition="'$(GitSha)'==''">
		<Exec Command="git rev-parse --short HEAD" 
		      ConsoleToMSBuild="True" 
		      EchoOff="True" 
		      IgnoreExitCode="True"
			  Condition="'$(GitSha)'==''">
			<Output TaskParameter="ConsoleOutput" PropertyName="GitSha" />
		</Exec>
		<PropertyGroup>
			<InformationalVersion Condition="'$(GitSha)'!='' And '$(Version)'!=''">$(Version)+g$(GitSha)</InformationalVersion>
		</PropertyGroup>
	</Target>
</Project>