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Date: Sun, 23 Sep 2007 22:56:32 +0400
From: Anton Farygin <rider@altlinux.com>
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Subject: Re: [devel] biarch
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Alexey Tourbin пишет:
> On Sun, Sep 23, 2007 at 10:35:49PM +0400, Anton Farygin wrote:
>> на мой взгляд, можно посмотреть как сделан biarch в SuSE - судя по всему 
>> это всех устраивает.
> 
> Куда посмотреть, как сделано в SuSE?

Хорошего описания я не нашёл, к сожалению ;(

вот всё что есть на сайте:

  4.1. Biarch Systems


The directories like /usr/lib64 and /usr/X11R6/lib64 are used next to 
the usual /usr/lib and /usr/X11R6/lib directories on biarch systems. 
This is because two variants of the same libraries must coexist on such 
systems to allow running both 32-bit and 64-bit applications in 
parallel. The 64-bit libraries are installed in lib64 directories and 
32-bit libraries in the lib directories. The macros 
[[SUSE_Package_Conventions/RPM_Macros#spc_rm_lib %_lib] and 
[spc_rpm_macros.html#spc_rm_libdir %_libdir] do this.

Special packages are created for the biarch systems that include only 
the 32-bit libraries. Any other files are not needed because these 
libraries can use architecture independent files from the 64-bit 
packages. They are even able to execute 64-bit helper binaries. 
Therefore, these are shared as well and are installed into lib on all 
architectures instead (and not %_lib). See the part about --libexecdir 
in the following section.

Видимо всё остальное надо смотреть в пакетах:
http://ftp.opensuse.org/pub/opensuse/distribution/SL-OSS-factory/inst-source/suse/x86_64/

В частности там лежит пачка пакетов содержащих в имени 32bit.