title: Is it possible to change productName via xcconfig file in xcode?
body: <p>I am setting below two parameters in <strong>Config.xcconfig</strong> file to fetch <code>appDisplayName</code> and <code>bundle Identifier</code> from config file. I did my code in xcconfig file as :</p>
  
  <pre><code>appDisplayName=myapp
  appIdentifier=org.prince.myapp
  </code></pre>
  
  <p>Set in app-<strong>Info.plist</strong> file as </p>
  
  <pre><code>Bundle identifier = ${appIdentifier}
  Bundle display name =${appDisplayName}
  </code></pre>
  
  <p>add it to project under configurations.</p>
  
  <p>It is working fine as I have given myapp as display name it is showing in simulator/device as it is.</p>
  
  <p>Lets come to the point. I want to know Is there any way to change <code>PRODUCT_NAME</code> variable value.  I set  <code>PRODUCT_NAME=custom</code>  in configuration file but this doesn't seems to work.</p>
  
  <p><img src="https://i.stack.imgur.com/6bgBy.png" alt="enter image description here"></p>