Re: Antwort: Re: [gentoo-embedded] emerge ROOT question

[Chuck Robey]

andreas.sumper@×××××××××.at wrote:

>
> Hi Chuck!
>
> Chuck Robey <chuckr@××××××.org> schrieb am 06/19/2006 06:47:55 PM:
>
> > Mike Frisch wrote:
> >
> > > On 6/17/06, andreas.sumper@×××××××××.at <andreas.sumper@×××××××××.at>
> > > wrote:
> > >
> > >> just an idea:
> > >> What one could do, is building some sort of target-Filesystem and
> do a
> > >> chroot into that system. Then the compiler has to be changed to your
> > >> cross-compile-toolchain and some of the flags in make.conf have to be
> > >> changed. After that, a simple emerge in the chrooted environmen
> should
> > >> create all the needed stuff and cross-compile it for the specified
> > >> architecture.
> > >
> > >
> > > Actually, this is pretty much what I'm doing already but I want to
> > > wrap the process in a UI which will have issues with a chrooted
> > > environment.
> > >
> > > Thanks for the reply.
> >
> > Well, I want to be able to put together a Gentoo system but not to use
> > Gentoo to do it, if that's remotely possible.  I rather like, for
> > cross-building a system, the Pengutronix ptxdist stuff.  So, I can VERY
> > easily use that to build all the normal Linux portions of a system,
> it's
> > the Gentoo-specific parts (the stuff in /etc, and Portage, I *think*
> > that;'s all) that I need to get built, and I don't even have a list of
> > what the names of the pieces are, much less any idea where toget the
> > sources from.
> >
> > To be honst, from the Gentoo side of things, I'm pretty much at sea on
> > this.  No idea how to even begin, although I know software well
> enough.
> > Could you give me any ideas what the general path ahead of me is?  At
> > the moment, I'm lookiing at a very messy job of trying to figure out
> the
> > portions of my Pentium system will just copy over, and that seems
> > incredibly wrong to try.  There has to be some central archive with
> > Gentoo code somewhere, isn't there?
>
> One thing you could try is creating a traget filesystem with ptxdist.
> So you would have at least an idea, which parts have to be put
> together and have a look, if you can find the equivalents in the
> portage-tree in gentoo. I guess that this should work. I tried ptxdist
> for myself, but creating the target-fs did not work properly, nor did
> the porting of Qt-embedded work correctly...

Yeah, that's the method I intend to use, so far, and I'm working towards 
it right now, I think they've come a bit since you tried it, it seems to 
work now, although it's got bugs aplenty still.  It's the Gentoo parts 
that I need help on, I don't even have a clue how to begin for those.  
Not the Linix parts, in fact, I don't think I need even consider the 
busy box (and to be honest, I'd rather not, they are SO messed up!)

>
> BTW, use busybox if possible, to keep your target small. This allows
> to use many commands with just one binary and some links.
>
> Bye,
> Andy


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