Re: conditional property

From: Zbynek Winkler (zwin_at_[hidden])
Date: 2004-01-12 09:58:01

Vladimir Prus wrote:

> There are two questions. First is when to set NDEBUG -- for 
> <optimization>speed or for <variant>release. Second is how to set them: via 
> "active" features or composite features.
> 
> The answer to the last question is simple -- "active" features are used in 
> only one place, and I'd be happy to remove them completely.
> 
> The answer to the first question is not that simple. Assume you've created a 
> new variable 'super-optimized-release'. If it's inherited from 'release', 
> with current code you'll get NDEBUG automatically. If NDEBUG is set for 
> <variant>release, you'll suddenly get no NDEBUG, and your 
> super-optimized-release will suddenly become pretty slow.

I do not understand. When I create new variant (you meant variant, 
didn't you?) inherited from 'release', it has all the settings from 
release, does it not?

Zbynek

PS. As a side note - how would I go about creating new variant? Would 
you care to add a small example (preferably no modifications to the bjam 
tree)?