Re: [jamboost] Re: Improved linking mechanism

From: Vladimir Prus (ghost_at_[hidden])
Date: 2003-10-20 04:19:07

David Abrahams wrote:

> > Did this clarify anything?
>
> Yes, thanks. Now, IIUC:
>
> a. you are proposing to have both "bubble-up" and "automatic" linking

Yes.

> b. These are really the same thing when linking statically
>
> ??

Yes, for user. They are implemented slightly differently, but that's 
implementation detail.

> Why allow both? You wrote:
>
> "It was proposed by Ali, IIRC, that putting library in sources of
> other library does the right thing: use direct linking if the
> library is build as shared, and use bubble-up if library is linked
> as static."
>
> If that's the "right thing", allowing both seems overly complicated.
> One simple syntax should achieve what you want. Probably I'm missing
> something.

No, you're not missing anything. One reason why I'd like to allow bubble-up 
linking is that it's for free. It's just combination of <use> requirement, 
which we have, and <library> property in usage requirements, which we have as 
well. We need <library> property in any case, for example so that I can put 
<library>foo in project requirement.

Now that you've asked, I am not sure bubble-up linking should be in docs. 
Maybe, someone would like to avoid linking to library sources and pass 
libraries up to dependents. I don't know why this should be needed, though.

- Volodya