[Boost-build] Alias requirements?

Subject: [Boost-build] Alias requirements?
From: Gevorg Voskanyan (v_gevorg_at_[hidden])
Date: 2010-11-29 02:53:17

I feel I must be missing something obvious, but are alias requirements supposed 
to work? Consider this simple case:

alias src : a.cpp b.cpp : <define>FOO ;
exe e : main.cpp src ;

Here both a.cpp and b.cpp get built without FOO being defined. Changing 'alias' 
with 'lib' fixes the things and causes FOO to be properly defined for a.cpp and 
b.cpp.
This is somewhat similar 
to http://lists.boost.org/boost-build/2009/04/21616.php, and I really don't see 
why either shouldn't 
work. http://www.boost.org/boost-build2/doc/html/bbv2/tasks/alias.html seems to 
suggest this to be a supported use case (the 'threads' example), so is this a 
bug or a misunderstanding of 'alias' on my part?

Thanks,
Gevorg

P.S. Using Boost.Build shipped with Boost 1.44