# File lib/vendor/darwin/ext/rakefile.rb, line 10
  def xcb(action, extra='')
    command = [
      XCODEBUILD,
      "-target", $target,
      "-configuration", $configuration,
      action,
      "-xcconfig", XCCONFIG,
      extra
    ].join(' ')
    
    Dir.chdir 'fsevent_watch' do
      results = `#{command}`
      STDERR.puts results
      raise "xcodebuild failure" unless $?.success?
    end
  end