Building base, other than by default

[Baho Utot]

I am working on a script to build base and I want to build it in another 
directory other than /usr/src.
I would also like to place the result binaries in another directory 
other than /usr/obj.
I also would like to build as a non-root user.

Is this possible and can I install base from the build.

Also how is the packaging of base going.

Thanks