[gentoo-soc] Re: cross_container_support - progress report #9

[Luca Barbato]

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