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To: gentoo-dev@g.o
From: Paul de Vrieze <pauldv@g.o>
Subject: Re: Support for multiple ABIs for amd64 (64bit,32bit) in multilib overlay
Date: Sun, 16 Aug 2009 22:58:53 +0200
On Sunday 16 August 2009, Thomas Sachau wrote:
> Let me introduce a nice project, which was started by some users:
>
> Since the emul-linux-x86-* packages for 32bit libs for amd64 users are
> neither easy to maintain nor up-to-date, some users started to implement an
> eclass, which allows to build requested libs with additional 32bit support.
> Later i joined them and helped them improving it a bit, but it was and
> still is mainly their project, they do the main work keeping this overlay
> up-to-date.
>
> Also this overlay is a nice idea to drop emul-linux-x86-* packages, it
> either requires continual work or modification of many ebuilds in main tree
> to support this in long term. To avoid this, i took the original multilib
> portage patch from kanaka, adjusted it to the current portage code and
> added the ideas and code from the eclass version. The result is now a
> portage, which is able to build any ebuild with additional 32bit lib
> support.
>
> The current main regression are ebuilds and eclasses, which do not support
> this (e.g. perl modules and mysql).
>
> If anyone is interested:
>
> -for the eclass version, which is mainly maintained by users and is mainly
> intended to only replace the emul-linux-x86-* package: just add it via
> "layman -a multilib" (it should be pretty stable and mostly working).
>
> -for the portage version: It is also in the multilib overlay, but in a
> different branch called portage-multilib. To use this, you should read the
> instructions at [1] (doc/portage-multilib-instructions). This one should
> also mainly work, but there is probably a good amount of packages in the
> main tree, which may refuse to work with it.
>
> Bugreports: preferred way is #gentoo-multilib-overlay at irc.freenode.org,
> but we also have an alias, where you can contact us: multilib@g.o
>
> [1]: http://github.com/sjnewbury/multilib-overlay/tree/portage-multilib

Good work,

Unfortunately my 64 bit system is currently non-functional, but when it is 
working again (when I replace parts) I'll try the portage stuff out.

Paul

-- 
Paul de Vrieze
Email: pauldv@g.o


References:
Support for multiple ABIs for amd64 (64bit,32bit) in multilib overlay
-- Thomas Sachau
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