title: How to Empty Caches and Clean All Targets Xcode 4 and later
body: <p>Jonathan suggest here: <a href="https://stackoverflow.com/questions/4980296/xcode-includes-xib-files-that-have-been-deleted/4980405#4980405">Xcode Includes .xib files that have been deleted!</a> that cleaning all targets and empty the caches will fix the problem with Xcode including deleted .xib files but I cannot find a way to empty the cache in Xcode 4.</p>
  
  <p>How to do that in Xcode 4?</p>