crossdev

I have two questions?

1) How to re-emerge everything what crossdev does completely from sctratch?
My crossdev generated toolchain, which was ok for several months, stops 
working.

2) Is it possible to collect everything what crossdev does, make binary 
package and send it to a friend which does not use gentoo, to enable 
crosscompiling at his computer?
How?

Thank you very much.

Jakub Ladman