Re: [Boost-build] How to write such a feature?

Subject: Re: [Boost-build] How to write such a feature?
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-09-22 00:16:42

AMDG

Sherwood Hu wrote:
> The <define> property in Boost.Build does not propagate. This causes
> problems in my project, as the unit tests require a macro UNIT_TEST to
> be defined and the main library is built with this macro defined.
> Because <define> does not propagate, I have to specify <define>UNIT_TEST
> at the command line. If the library is built first without this macro,
> the unit tests will not be built successfully. 
>
> I am considering to add a <unit-test> feature and make <define>UNIT_TEST
> propagate. 
>
> Import feature : feature ;
>
> Feature unit-test : on off : propagated ;
>
> But how to add <define>UNIT_TEST when <unit-test>on? 
>   

Use a composite feature.  They are documented at the bottom of
http://www.boost.org/boost-build2/doc/html/bbv2/extending/features.html

In Christ,
Steven Watanabe