Re: dpkg-cross and qemu

[Johannes Schauer <j.schauer@email.de>]

Hi,

Quoting Michael Tokarev (2014-11-03 18:16:39)
> Anyone know if current interp-prefix is actually used by someone in Debian?
> It is set to /etc/qemu-binfmt/%M but this directory does not exist.  I'm
> asking because if we're to change the prefix to the one used by dpkg-cross,
> we'll have to migrate existing /etc/qemu-binfmt/ directory to a new location,
> which will be really troublesome.

maybe this is a long shot but the solution I created to a similar problem with
qemu-user might be able to help you as well. Please see #632192 about it.

Essentially, I wanted to have qemu-user be run automatically on foreign arch
binaries using the linux binfmt mechanism. This requires that one is able to
set the prefix via other means than the -L option because one would not call
qemu-user directly anymore. Thus, I wrote a patch to accept an environment
variable containing the prefix path. Upstream accepted that patch in commit
fc9c5412 in 2011.

So now you can just export QEMU_LD_PREFIX and set it to whatever you want like
for example to /usr/powerpc-linux-gnu as you expressed in #356309.

Hope this helps!

cheers, josch