Compiling Sage with multiple cores

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Hi all,

I am compiling Sage 5.0.1 in Ubuntu 12.04 According to the book "Sage: Beginner's Guide" to compile with multiple cores one needs to export a variable MAKE. I did so

export MAKe="make -j7"

and everything went well until the Atlas-3 compilation started. While compiling this (which is painfully big) only 1 core is being used.

Is there a way to compile all the parts of sage with multiple processors?

Thanks