Re: [gentoo-user] cross-compile attempt

[Mick]

On Monday 01 Aug 2016 16:31:18 Peter Humphrey wrote:
> On Monday 01 Aug 2016 14:51:02 Mick wrote:
> > Given Andrew's steer I had another look and found this guide:
> >
> > https://wiki.gentoo.org/wiki/Project:AMD64/32-bit_Chroot_Guide
> >
> > Is this approach still valid, or have things moved on since this article
> > was authored (2012) and different configuration/approach is now
> > recommended?
>
> I use that method to maintain a 32-bit Atom box. I export its /usr/portage
> via NFS to a chroot on this i7 box and build packages in the chroot. Then I
> install from packages on the Atom.
>
> I'm sure it would be just as easy, or more so, to mount the whole Atom file
> system and work in it as though I had an i7 processor on the Atom file
> system. I may try that again. Meanwhile, here's my /etc/init.d/atom script.
> The mtab I copy in contains enough entries to forestall error messages:
>
> $ cat /etc/init.d/atom
> #!/sbin/openrc-run
> depend() {
>    need localmount
>    need bootmisc
> }
> start() {
>     ebegin "Mounting 32-bit chroot dirs under /mnt/atom"
>     mount -t proc /proc /mnt/atom/proc
>     mount --rbind /dev /mnt/atom/dev
>     mount --rbind /sys /mnt/atom/sys
>     mount --rbind /var/tmp/portage /mnt/atom/var/tmp/portage
>     mount -t nfs 192.168.1.2:/usr/portage/packages
> /mnt/atom/usr/portage/packages cp /etc/mtab.atom /mnt/atom/etc/mtab
>     eend $? "Error mounting 32-bit chroot directories"
> }
> stop() {
>     ebegin "Unmounting 32-bit /mnt/atom chroot dirs"
>     rm /mnt/atom/etc/mtab
>     umount -f /mnt/atom/var/tmp/portage
>     umount -f /mnt/atom/sys/firmware/efi/efivars
>     umount -f /mnt/atom/sys/fs/pstore
>     umount -f /mnt/atom/sys/fs/cgroup/openrc
>     umount -f /mnt/atom/sys/fs/cgroup/cpuset
>     umount -f /mnt/atom/sys/fs/cgroup/cpu
>     umount -f /mnt/atom/sys/fs/cgroup/cpuacct
>     umount -f /mnt/atom/sys/fs/cgroup/freezer
>     umount -f /mnt/atom/sys/fs/cgroup
>     umount -f /mnt/atom/sys/kernel/config
>     umount -f /mnt/atom/sys/kernel/debug
>     umount -f /mnt/atom/dev/pts
>     umount -f /mnt/atom/dev/shm
>     umount -f /mnt/atom/dev/mqueue
>     umount -f /mnt/atom/proc
>     umount -f /mnt/atom/sys
>     umount -f /mnt/atom/dev
>     umount -f /mnt/atom/usr/portage/packages
>     eend $? "Error unmounting 32-bit chroot directories"
> }
>
> Of course I haven't bothered with idiot-proofing it, as I'm the only one
> here.
>
> HTH.

Thank you Peter, I seem to have posted a few seconds before I received your 
message.  From what you're showing above I seem to have not performed a 
correct mount of the chroot fs.  I better rinse and repeat ...
-- 
Regards,
Mick