title: How do I force Eclipse to rebuild if files in another project change (any change)?
body: <p>I've got an Eclipse (Galileo) project (called ProguardBuilder) that runs Proguard over a set of class files in other projects and produces a jar file.</p>
  
  <p>I'd like to have the ProguardBuilder project get rebuilt any time any class file in the other projects changes.  AutoBuild doesn't do that; presumably it's smart enough to recognize and ignore any changes that don't affect anything externally visible.</p>
  
  <p>My problem is that I don't care whether or not the change is visible, since I need to completely rebuild ProguardBuilder any time the class files it depends on change at all.</p>
  
  <p>How do I tell Eclipse to do this sort of rebuild?</p>