Re: [gentoo-embedded] Cross Dev Tricks + Hardened questions

[Ned Ludd <solar@gentoo.org>]

On Tue, 2009-12-01 at 09:44 +0100, Shinkan wrote:
> 
> 2009/11/30 Peter Stuge <peter@stuge.se>
>         
>         
>         USE CATALYST!
>         
>         
>         To do this you will create stage2, stage3 and stage4 spec
>         files
>         (maybe also stage1, I'm not sure on that) for catalyst. It can
>         produce exactly what you want.
>         
>         
>         Fine, I believe this would be controlled by USE flags for
>         stage2 and
>         up.
>         
>         
>         Please just start playing with the catalyst examples. I hope
>         you will
>         quickly learn what they produce.
> 
> I already looked a lot into Catalyst but some points doesn't fit to my
> plans :
> - I have to use a profile if I want to specify things (for instance
> ports version) for base stage. I really don't want to build a profile
> because they're hard to maintain in a wide use scheme, and because
> that's overkill.
> - Catatalyst seems to build by substraction (I mean on livecd, it
> builds from a stage3, then unmerges and removes things). I want to
> build with additive steps (from nothing).
> - I want to be able to just emerge one new port or update one on a
> target, and with Catalyst I cant. I must rebuild all (yeah, cache is
> there but...), and I really need to build just one port on some cases.
> 
> That's why I thought about a "build" directory built from my host with
> crossdev. Then I use this build env to build my target with gcc/libc I
> want. If I have to build just one port, I can use my build env for
> this target again.
> Since I choose what to build from nothing, I don't have to use profile
> to define what I put in my target or build. I don't break system by
> removing things.
> My build standard "make.conf" serves as usual, I have nothing more
> than a crossdev, a make.conf filling, and some emerge to a given root.
> 
> That's what I want, but I don't know how to achieve this.
> If Catalyst can offer me this control, I would be glad to use it.


catalyst can do none of the above and it's not cross-compile aware at
all. Building from nothing is the right way to handle what you are
trying to accomplish.


Good luck.


-- 
Ned Ludd <solar@gentoo.org>
Gentoo Linux