Re: [gentoo-user] Hoping someone can help explain distcc to me

[Dale <rdalek1967@gmail.com>]

Peter Humphrey wrote:
> On Sunday 21 August 2011 04:04:05 Matthew Finkel wrote:
>
>    
>> On Sat, Aug 20, 2011 at 10:46 PM, Dale<rdalek1967@gmail.com>  wrote:
>>      
>>> How hard is it to set up a 64 bit machine to compile programs for a 32
>>> bit system?
>>>
>>> Dale
>>>
>>> :-)  :-)
>>>        
>> It's actually quite easy. IIRC, when I did it last, the only difference
>> is that when you chroot into the subsystem you need prefix the command
>> with linux32, e.g. linux32 chroot /path/to/chroot /bin/bash
>>      
> Yes, just follow this guide:
> http://www.gentoo.org/proj/en/base/amd64/howtos/chroot.xml
>
> I did that and it was straightforward as far as I remember. I did spend some
> time thinking at a few stages, to get an understanding of what I was doing
> rather than just blindly following somebody else's prescription.
>
> Then it's a matter of writing some simple scripts to mount the packages
> directory on the big host. Here's mine, most of which I scrounged from
> somewhere:
>
> $ cat /etc/init.d/atom
> #!/sbin/runscript
>
> depend() {
>     need localmount
>     need bootmisc
> }
>
> start() {
>      ebegin "Mounting 32-bit chroot dirs"
>      mount -o bind /dev /mnt/atom/dev>/dev/null
>      mount -o bind /dev/pts /mnt/atom/dev/pts>/dev/null
>      mount -o bind /dev/shm /mnt/atom/dev/shm>/dev/null
>      mount -t proc /proc /mnt/atom/proc>/dev/null
>      mount -o bind /sys /mnt/atom/sys>/dev/null
>      mount -o bind /tmp /mnt/atom/tmp>/dev/null
>      mount -t nfs -o vers=3 192.168.2.2:/usr/portage/packages
> /mnt/atom/usr/portage/packages
>      eend $? "An error occurred while attempting to mount 32-bit chroot
> directories"
>      ebegin "Copying 32-bit chroot files"
>      cp -pf /etc/resolv.conf /mnt/atom/etc/>/dev/null
>      cp -pf /etc/passwd /mnt/atom/etc/>/dev/null
>      cp -pf /etc/shadow /mnt/atom/etc/>/dev/null
>      cp -pf /etc/group /mnt/atom/etc/>/dev/null
>      cp -pf /etc/hosts /mnt/atom/etc/>  /dev/null
>      cp -Ppf /etc/localtime /mnt/atom/etc/>/dev/null
>      eend $? "An error occurred while attempting to copy 32-bit chroot files."
> }
>
> stop() {
>      ebegin "Unmounting 32-bit chroot dirs"
>      umount -f /mnt/atom/dev/pts>/dev/null
>      umount -f /mnt/atom/dev/shm>/dev/null
>      umount -f /mnt/atom/dev>/dev/null
>      umount -f /mnt/atom/proc>/dev/null
>      umount -f /mnt/atom/sys>/dev/null
>      umount -f /mnt/atom/tmp>/dev/null
>      umount -f /mnt/atom/usr/portage/packages>/dev/null
>      eend $? "An error occurred while attempting to unmount 32-bit chroot
> directories"
> }
>
> I could list the steps of my daily routine to upgrade both the client and
> the chroot if that would help.
>
>    

I followed the guide and some info here and it seems to have worked 
great.  I'm glad.  The cooler on the heatsink is VERY whimpy.  It's 
aluminum and has a little 60mm fan on it.  I didn't measure it but its 
certainly not as big as my 80mm.  I can barely feel the air it moves.  
Compiling on htat would likely be a problem pretty quick.

Now to get the install moved over to the other rig.  DVD and a tarball 
maybe?  Hmmmm, I got to think on this one.  It's almost 5Gbs worth.  
Maybe man scp will help.  ;-)

Thanks for the link.  This was awesome!!

Dale

:-)  :-)

P. S.  Now I can build binaries for my old rig too.  :-D