boost.build: variants and default builds?

From: Markus Schoepflin (markus.schoepflin_at_[hidden])
Date: 2001-10-17 03:44:20

Hi boosters,

I have two questions concerning the new boost build system.

1. Can I define a new variant as a variation of an old variant? Say I 
want a variant "my-debug" which inherits all the settings 
from "debug" but changes some features which are set in "debug".

2. How can I specify a default build variant for all projects, 
including all subprojects in the top level jamfile?

TIA, Markus