Re: [jamboost] Re: Making user-config into a project

From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-04-06 10:21:32

On Tuesday 05 April 2005 18:22, David Abrahams wrote:
> Vladimir Prus <ghost_at_[hidden]> writes:
> > Folks,
> > I think it would be nice to make user-config.jam into a project. So, you
> > can use all the rules you can use inside Jamfile. Also, projects without
> > explicit parents will be considered children of user-config.jam.
>
> Interesting. Can we get rid of Jamroot, then <.05 wink>?

Not yet ;-) Those are unrelated things.

> > The first part of the change mean you can define targets, constants and
> > have use-project calls in user-config jam. This is already possible if
> > you add
> >
> > import project ;
> > project.initialize $(__name__) ;
> >
> > but the above is not nice.
>
> Shouldn't we inject that into site-config.jam automatically?

That's why I'm suggesting. Well, I suggested this for user-config.jam, but 
site-config.jam is the same story.

> > The second part of the change means that all Jamroot files will inherit
> > properties from user-config.jam. So, you can write
> >
> > project : requirements <include>/home/ghost/local/include ;
> >
> > in user-config.jam and all your projects will get this requirements. I
> > recall this was requested once. The code change is pretty trivial.
> >
> > Comments?
>
> Good ideas all around. But then why not make *all* projects
> subprojects of user-config.jam?

*Direct* subprojects? Well, then either:
1. Projects won't be direct subprojects of Jamfile in the nearest parent 
directory, or
2. Projects can have several parents
and neither looks very good. 

Currently we might have his project hiererchy:

- Jamroot
- Jamfile at subdir
- Jamfile at subdir/subdir2

And each project inherits attributes from the parent. I just suggest to make 
this:

- site-config.jam
- user-config.jam
- Jamroot
- Jamfile at subdir
- Jamfile at subdir/subdir2

- Volodya

-- 
Vladimir Prus
http://vladimir_prus.blogspot.com
Boost.Build V2: http://boost.org/boost-build2