Re: [Boost-build] How to adjust/redefine default variants "debug", "release" and "profiling"

Subject: Re: [Boost-build] How to adjust/redefine default variants "debug", "release" and "profiling"
From: Vladimir Prus (ghost_at_[hidden])
Date: 2009-11-11 05:15:52

On Wednesday 11 November 2009 Deniz Bahadir wrote:

> Hello everyone,
> 
> I have a short question concerning the default build variants "debug", "release", and "profiling":
>   Is it possible to change some features for these default variants or add some new? (And how?)
> 
> I do not want to inherit these variants but instead change them directly.
> For example, I like to add a preprocessor-define "DEBUG" to the debug variant, (but not to the others).
> 
> By searching this list I already found a way to change some of the default-settings by doing the following:
>   # Rearrange default features to our specs
>   import feature ;
>   feature.set-default runtime-debugging : off ;
> However, as far as I understand, this changes the default value globally for all three default variants and it seems not to be possible to do it just for one variant. I was also not able to add a preprocessor-define (at least globally to all variants) using this mechanism.
> 
> So hopefully someone can help me.

Deniz,

there's no 'clean' way to do this. However, can you try this:

        module feature 
        {
                <variant>debug.components = <optimization>off <define>FOOBAR ;
        }

This explicitly pokes at relevant settings inside the 'feature' module.
Let me know if this helps.

- Volodya