[Boost-build] How to set proper scope in a generator rule?

From: Daniel Einspanjer (deinspanjer_at_[hidden])
Date: 2006-02-13 17:44:16

I have a generator closely based upon the one Volodya described in his 
response to this thread:
http://thread.gmane.org/gmane.comp.lib.boost.build/11654

One of the things I did was make a rule with the same name as the action 
that builds up the variable XSL_TOOL which is used by the action.

I discovered that I couldn't declare that variable as local in the rule 
because then the action couldn't see it.  What would be the proper way to 
scope that type of variable to reduce the possibility of collisions anywhere 
else?  Is it automatically scoped to the class? (I'm assuming it isn't 
because the rule and actions statements are outside the class definition.)

-- 
Daniel Einspanjer