[Boost-build] [bbv2] Approximating if (!<toolset>foo) with bbv2 1.33.1

From: Foster Brereton (fosterb.boost_at_[hidden])
Date: 2005-12-14 19:57:38

(I sent this a couple days ago and got no response -- is this the
right list to which to send these sorts of questions about bbv2? If
not, what is the right list?)

I've got a handful of targets that I am trying to build, but some of
them I want to be built only for specified toolsets. A similar request
(along with a bjam solution for the request) was posted back in
January:

      http://article.gmane.org/gmane.comp.lib.boost.build/8184/

Unfortunately, the alias approximation given to simulate "if
(!<toolset>foo)" no longer works with bbv2 1.33.1. I get the following
error:

      error: failed to build ./begin with properties ... <toolset>gcc
... because no best-matching alternative could be found.

In my Jamfile I have (among other things):

      alias begin : : <toolset>gcc ;
      alias begin : /adobe/test/begin/ ;

Is the old method of approximation supposed to work still? If not, is
there a new means by which we can approximate "if (!<toolset>foo)"?

Blessings,
Foster

--
Foster T. Brereton - Computer Scientist
Software Technology Lab, Adobe Systems Incorporated
fbrereto_at_[hidden]   --   http://opensource.adobe.com