[boost] [boost-build] restrict target directory to dependent features (repost)

Subject: [boost] [boost-build] restrict target directory to dependent features (repost)
From: Sandeep Gupta (gupta.sandeep_at_[hidden])
Date: 2010-05-26 18:27:07

Hi,

This is a repost from boost-build mailing list. It failed to catch an
attention. Would appreciate any help any this problem.

Essentially my question is that can I specify a symmetric feature to be
non-propagated.

To elaborate:
 Is it possible in bjam to restrict target directory to generators features?
I can better state the problem with an example.  Lets
say I have two  generators G1 (maps .foo to  .g1), G2 (maps .g1 to .g2),
with corresponding feature F1, F2.

If I import both generators than then the target directory is
bin/debug/F1-f1/F2-f2 even if I am activating G1 generator.

Ideally what I would like is the output be restricted by the generators
features i.e
let say I have

g1 xx.g1 : xx.foo
   : <F1> f1

   ;

g2 xx.g2 : xx.g1
    : <F2>f2
     <F1>f1
   ;
then the target for g1 should be /bin/debug/F1-f1/,
and target for g2 should  be bin/debug/F1-fi/F2-f2 and it should look for g1
in directory bin/debug/F1-fi/F2-f2.

Is there a way to configure bjam to adopt the later policy?.

Thanks.
Sandeep