Linux on an AMD64 box...

[Brandon Sandrowicz]

It just depends on what you are running. If mplayer doesn't link against any
external libraries, then it's portable between 32-bit and 64-bit installs. The
real problem with running 64bit/32bit side-by-side is the libraries that apps
depend on. Debian doesn't have a standard location like 'lib64' or 'lib32' to
separate the 64-bit and 32-bit compiled libraries. 32-bit Firefox can't use
64-bit GTK+ libraries, for example. This is where the chroot comes in. With
the chroot, you can have the 32bit libraries installed in the default
locations ( which would overwrite the 64bit libraries otherwise) and the 32bit
programs look for them there. So you just have your 32-bit chroot pointed to a
32-bit repository and it should install all the 32-bit libraries into the
appropriate locations in the chroot.

IIRC, other distros just have a 'lib64' for 64-bit libraries or a 'lib32' for
the 32-bit libraries and all of their packages are compiled with this in mind
for linking.

- Brandon Sandrowicz

On Mon, Aug 21, 2006 at 10:00:09AM -0400, ted leslie wrote:
> for sled10 x64
> it comes out of the box with flash and mp3
> i copied a 32bit mplayer, and dll's to the 64bit machine
> ran the 32bit mplayer, and it got an error on 2 lib's that i brought
> over from a 32bit suse install,
> and that was that, no chroot, etc, just a fully working suse sled10,
> with a 32 bit mplayer (its dll's) and a could of 32bit libs.
> 
> -tl
> 
> 
> 
> On Sun, 2006-08-20 at 15:12 +0100, Jamon Camisso wrote:
> > Lennart Sorensen wrote:
> > > Yeah it takes like 10 or 15 minutes to do following the howto.  There
> > > are a few tricks for a few programs to deal with, but for most things it
> > > works fine.
> > > 
> > > I actually run 32bit debian on an amd64, with a 64bit kernel, and then
> > > 64bit debian in a chroot.
> > 
> > So how do you have that working? You install a 32bit version and then 
> > simply compile and/or copy your 64bit kernel and associated /lib/kernel 
> > folder to your 32bit install? I'm interested as I do find that even 
> > using dchroot and various other methods of running 32bit programs on 
> > 64bit kernels, there are some quirky little things, like missing gtk 
> > libraries etc. for, say Firefox, that I don't want to have to track down 
> > and install...
> > 
> > Jamon
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