[Boost-build] <build>no propagation

From: jwulp_at_[hidden]
Date: 2006-11-24 06:15:27

Hello Everyone,

I am currently involved in doing maintenance on the MCRL2 toolset. This is a set
of tools build on top of a variety of libraries such as ATerm, SVC, libXML,
wxWidgets, and a couple more. The fundament consists largely of the ATerm
library; so almost all tools use it therefore there is a strict dependency. The
toolset cannot be build without the ATerm library. No problems so far.

The problems start when there is a hierarchy of libraries and somewhere
below in the hierarchy a library is not available. Using the build feature the
lower level library has <build>no in its requirements (and usage requiements).
The build feature is nicely propagated upward following the reverse dependencies;
but it has no effect. Tools as well as libraries are still being build with a
directory element build-no in the target names.

Is there a reason why the <build>no does not have an effect when it is added via
usage requirements? Is there another way to achieve the desired effect?

Thanks an advance for any help.

Best regards,

Jeroen