title: How to speedup xcode builds without any project modifications?
body: <p>Last version or XCode (3.2.1) is running very slow on OS X 10.6.</p>
  
  <p>What kinds of tweaks can you do to your Mac in order to <strong>speedup Xcode build</strong> process. </p>
  
  <p>I'm not looking for general hints like how to restructure your projects, just tweaks that are related to environment. </p>
  
  <p>For example I remember that on Windows for Visual Studio two significant speedups are to disable antivirus and NTFS last access time.</p>
  
  <p>So I'm aiming at something <strong>else</strong> than: hardware upgrades, project structure modifications or configuring distributed builds.</p>
  
  <p>Update #1 - maybe limiting the number of cc1plus processes could help speeding up. I think there is an environment variable that can be used for this but I wasn't able to relocate this info.</p>