[wplug] Software builds.

[kabel]

A professor of mine recently got on my case as to how I build software.. he 
advocates two directories, one for source, one for builds.  Packages get 
their own subdirectory in each, with source going in the appropriate subdir. 
and builds done in the other.  

I've never heard of doing it this way, and he may well have been referring to 
a specific case, but does anyone else do this?  

What other good practices have I missed out on along these lines?

kabel