Re: [gentoo-embedded] building a gentoo uclibc system

[Peter S. Mazinger]

On Tue, 8 Jun 2004, David Bryson wrote:

> On Tue, Jun 08, 2004 at 03:19:14PM +0200, Peter S. Mazinger wrote:
> > Hello!
> >
>
> Hi peter!
>
> > I am working on a clean gentoo-uclibc system, but some of the packages are
> > too old and need too much patching to work w/ uclibc, so I need ~arch
> > version. How can I enforce usage of some of the packages that are marked
> > as ~arch to be used for uclibc overwriting the keyword ~arch w/ arch.
> > I do not want to use generally ~arch, only for some of the packages, and I
> > do not want to remark these packages to stable.
> > These changes should also work for bootstrap and catalyst stage building.
> >
> > How are you intending to handle uclibc, should it have a separate profile,
> > like uclibc-arch-2004.x and hardened-uclibc-arch-2004.x? the embedded
> > subdir is not ok for it (ex. virtual/glibc sys-libs/glibc)
> >
>
> Heh I've been sorta trying to touch base with you on this stuff for a
> while.  Solar and I have been half heartedly attempting to do this for
> a while.  Most of my efforts have been in vain.
>
> My latest effort involved using the uclibc toolchain builder to
> replace gcc and libgcc with uclibc variants by copying it into a
> stage1 install and modifying all the symlinks.  This worked OK on my
> powerpc cross compiling for mips-el, but when I attempted to switch to
> x86libc -> x86uClibc I was unsuccessful.

I have started from a full uclibc buildroot (it is rpm based), where 
python/portage was installed, I ran emerge sync and began to build all the 
stuff needed for a stage1 by 'ebuild <package> package' (not installing 
almost anything, because it was already installed by rpm, I needed 
basically baselayout (I think einfo missing) and grep (for librcfuncs.so)

a. hacked econf to copy config.sub/guess replacing the respective 
files in the src.
b. changed the packages file in the profile directory (started from 
hardened-x86-2004.0), commenting glibc and pam/pwdb/pam-login
c. modified almost all ebuilds (adding some nls/nis/gettext disabling 
patches and support for uclibc (ltconfig configure and so on)
d. make a "current" uclibc ebuild, having the same stuff in as in my 
rpm.spec (I use an uClibc -cvs, w/ minimal rpc, WIDE_CHAR but no locale)
e. after having all the stage1 stuff I have installed all of them w/o 
dependency from the packages and rebuilt all of the packages again, after 
that running an 'emerge system' (and now I have all the x86 and ~x86 
packages for uclibc (some are not working from x86, too old, these are 
currently used from ~x86: 
tar/uclibc/iputils/modutils/shadow/libtool/devfsd/zlib, the rest is from 
stable.

from emerge system (less glibc/pam/pam-login/pwdb) w/ USE="-nls noman 
noinfo nodoc" + the rest from the hardened profile, I can't build slocate 
and can't install openssh (openssh wants to add group/user and uses getent, 
not present in uclibc), I knew already about slocate that it won't build 
(sl_fts.c: undefined S_IFWHT)

now I am stripping down the original packages first, after that I will 
begin replacing perl w/ microperl (I'll leave microperl in to be able to 
run autotools and some installation stuff), coreutils and friends w/ 
busybox, gawk w/ mawk and so on, after that I will build stages w/ 
catalyst (if I can create manually a seed-stage).

Apropos: is there some method to build a seed-stage from binary packages?

Peter

-- 
Peter S. Mazinger <ps dot m at gmx dot net>           ID: 0xA5F059F2
Key fingerprint = 92A4 31E1 56BC 3D5A 2D08  BB6E C389 975E A5F0 59F2


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