common.targets

<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
	<Target Name="ValidateMicrosoftGesturesInstallDirEnvVaraibleIsDefined" BeforeTargets="PreBuildEvent">  
        <Error Text="MicrosoftGesturesInstallDir environment variable is not defined! Kindly install Microsoft Gestures SDK from https://aka.ms/gestures/download and restart this Visual Studio instance."  
               Condition="'$(MicrosoftGesturesInstallDir)' == ''" />
		<Error Text="MicrosoftGesturesInstallDir environment variable points to non existent directory ($(MicrosoftGesturesInstallDir))! Kindly install Microsoft Gestures SDK from https://aka.ms/gestures/download and restart this Visual Studio instance."  
               Condition="!Exists('$(MicrosoftGesturesInstallDir)')" />
    </Target> 
</Project>