title: 'ld: file not found' after changing product name in Xcode
body: <p>I was working on my application and i started out with a really bad name. So i decided to change it. I did that like this.</p>
  
  <p><img src="https://i.stack.imgur.com/D68k9.png" alt="enter image description here"></p>
  
  <p>At the top right corner i simply changed the name to what i want. and then i started getting the error as you can see there. <em>Reveal in Log</em> shows these details:</p>
  
  <p><img src="https://i.stack.imgur.com/cjbgM.png" alt="enter image description here"></p>
  
  <p>The main error says:</p>
  
  <blockquote>
    <p>ld: file not found: /Users/.../XCode/DerivedData/...</p>
  </blockquote>