Inner workflow of xcode4 building

I am developing one application for iPad, this application used some content such as video/audio/image etc, about 8 GB.

So when click the BUILD button in xcode4, it will take nearly 1 hour to build it.

I need to figu开发者_JS百科re out which cause so long time.

I know that once we trigger the building, we have procedures like complier, link etc.(normal sense ), now my purpose is to optimize the building, so need figure out how many procedures happened when trigger building in xcode4, and what is the longest part in my case.

Thanks for your answers in advance.

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You could go in Preferences>Behaviors>Build starts>Navigate to>current log.