title: Cant find prefix Header Xcode
body: <p>I'm running into an issue with Xcode 6 where Xcode can't find the path to my Prefix header file. I've followed other posts online and can't seem to resolve such a simple issue. I didn't have a prefix header in my project so I created one calling it MyProject-Prefix.pch. I added this file into my project structure</p>
  
  <p>I then go into project -> build settings -> APPLE LLVM 6.0 Language -> Prefix header.</p>
  
  <p>I set the value for Prefix Header to: </p>
  
  <pre><code>$(SRCROOT)/MyProject-prefix.pch
  </code></pre>
  
  <p>However when I clean and build the project I get an error: </p>
  
  <p><strong>clang: error: no such file or directory: '/Users/me/my-ios-app/MyProject/MyProject-prefix.pch'
  clang: error: no input files</strong></p>
  
  <p>Can anyone help me configure this properly or point out what I'm missing? </p>