Re: The run-time linker doesn't deal with magic symlinks (or even plain symlinks) for shared objects?

[Johan Ihren <johani%johani.org@localhost>]

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On 17 Jul 2008, at 10:30, Johan Ihren wrote:

> > You'll want to play with moving /lib to somewhere under machine/ 
> > <arch>
> > too, as well as /libexec, /sbin and /bin and probably /libdata.   
> > Is /dev
> > totally sharable between i386 and amd64?  I also wonder if any of the
> > databases in /var are arch-specific...
> >
> > Or look at my suggestion in my other posting which describes  
> > booting off
> > different partitions - that seems simpler ;-)
>
> Depends on your point of view, but I agree there are benefits to  
> both alternatives... but in my case, as I'm stuck using grub for  
> Xen, I quickly realized that boot.cfg isn't an option, unfortunately.

And it works! I'm happily running the four permutations of i386 and  
amd64, XEN3_DOM0 and GENERIC kernels from the same root filesystem.  
And the DOMUs (modulo appropriate magic to use the right kernels  
depending on DOM0 arch) are fine too.

Much rejoicing! Happiness! Many thanks for your help!

Time for dinner.

Regards,

Johan

PS. Short HOWTO:

1. Need different xen.gz for i386 and amd64, but that's easily fixed  
in grub/menu.lst

2. Need different /var/db/pkg trees, easily fixed with magic symlinks

3. Need to be careful with symlinks pointing to symlinks as some of  
them may have clever relative paths

4. Need to split the filesystems acording to arch at / 
{bin,sbin,lib,libexec,rescue}, /usr/{bin,sbin,lib,libexec}, /usr/pkg/ 
{bin,sbin,lib,libexec}, /usr/X11R6/{bin,lib,libexec} and finally /var/ 
db/pkg

5. Need to build kernels with "options MAGICLINKS"

Done!

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