title: "input is not a PCH file" - Xcode
body: <p>I'm working on a client code using PCH a file and I have this errors. </p>
  
  <blockquote>
    <p>error: input is not a PCH file:
    '/Users/XXX/Library/Developer/Xcode/DerivedData/Stockfish-gmtlyxbgbyyplbgwrhzsazbjjtxp/Build/Intermediates.noindex/PrecompiledHeaders/SharedPrecompiledHeaders/2449868381699930613/Stockfish_Prefix.pch.gch'
    fatal error: file
    '/Users/XXX/Library/Developer/Xcode/DerivedData/Stockfish-gmtlyxbgbyyplbgwrhzsazbjjtxp/Build/Intermediates.noindex/PrecompiledHeaders/SharedPrecompiledHeaders/2449868381699930613/Stockfish_Prefix.pch.gcinput
    is not a PCH file:</p>
  </blockquote>
  
  <p>I tried removing derived data, clean et rebuild but i still have this error. It was working a few months ago.</p>
  
  <p>Any idea what's wrong?</p>
  
  <p>EDIT: <a href="https://i.stack.imgur.com/SGXgH.png" rel="nofollow noreferrer">build settings</a></p>