Editar:
Desta forma: (encontrado aqui )
"I simply copied "/Applications/Install Xcode.app" from one machine to the other after the first machine downloaded from the App Store ($4.99 version). It worked fine."
Ou desta forma: (encontrado aqui )
"I am stumped by other answers here - I have just downloaded XCode 4.3.2 for Lion (AFAIK latest at the moment) from this site:
https://developer.apple.com/downloads/index.action
You only need a valid AppleID (free of charge) developer account. No credit card whatsoever."