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From: Luca Barbato <lu_zero@gentoo.org>
To: Jing Huang <jing.huang.pku@gmail.com>
Cc: gentoo-soc@lists.gentoo.org
Subject: [gentoo-soc] Re: cross_container_support - progress report #9
Date: Thu, 02 Aug 2012 18:14:35 +0200	[thread overview]
Message-ID: <501AA76B.6050608@gentoo.org> (raw)
In-Reply-To: <CAK8mDgqSnJ5ZbB4odYEzY3oYQXBBRYhH7_EtDxVAcTTCRw6GXw@mail.gmail.com>

On 08/02/2012 05:23 PM, Jing Huang wrote:
> Hmm..  The root cause of this fault is:
> 
> ./x86-program(built with dynamic libraries)
>       -->load_elf_binary()
>            -->open_exec("/lib/ld-linux.so.2");
> 
> lxc chroot lacks of /lib/ld-linux.so.2. This problem is a difficult
> one. In my opinion, the following two steps are essential to solve it.
> 
> 1. alter linker script to build x86-program using custom ld-linux.so.2
> path ( /target/lib/ld-linux.so.2 ).
> 

Overriding it is an interesting task, for the time being try mixing
amd64 and arm binaries, they use /lib and /lib64 so it is fine.

> 2. switch dynamic libraries to custom paths.
> This point is relatively easy. I could use either LD_LIBRARY_PATH or
> ld.so.conf.
> 
> "ldconfig /etc/ld.so.conf" is odd. I had altered ld.so.conf and
> env.d/00basic to exclude original library path(/lib, /usr/lib,
> /usr/local/lib), but the new generated cache file still include these
> paths.
> Unfortunately, linker will link libraries accroding to the ld cache
> file unless declare  the DT_RPATH and LD_LIBRARY_PATH.

Yes, it is one of the issue to investigate.

lu



      reply	other threads:[~2012-08-02 18:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-31 15:45 [gentoo-soc] cross_container_support - progress report #9 Jing Huang
2012-07-31 19:30 ` [gentoo-soc] " Luca Barbato
2012-08-01 17:01   ` Jing Huang
2012-08-02 15:23     ` Jing Huang
2012-08-02 16:14       ` Luca Barbato [this message]

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