[Boost-build] Conditional properties on the command line?

Subject: [Boost-build] Conditional properties on the command line?
From: John Maddock (boost.regex_at_[hidden])
Date: 2011-03-10 12:46:48

Is there a way to specify conditional properties on the command line if I'm 
building with multiple toolsets?

For example if I'm building with

bjam toolset1 toolset2

and want to add additional include paths that are different for each of the 
two toolsets?

Thanks, John.