[Boost-build] How to reference Boost header include path from outside the Boost tree?

From: John Maddock (john_at_[hidden])
Date: 2006-03-30 09:36:10

I'm trying to build some simple demos with bbv2, but the Boost headers 
aren't automatically placed in the include path, even when using:

run myfile ; # Doesn't find Boost headers!

So then I tried adding <include>$(BOOST_ROOT) but that doesn't work either - 
apparently BOOST_ROOT isn't set by bbv2 if it's not set by the user.

So.... how do I find the Boost header path?

Or how about something like:

using boost ;

which would just do the right thing?

Many thanks,

John.