On Friday, April 13, 2007 at 00:06:45 +0200, Joachim Schipper wrote:
>On Thu, Apr 12, 2007 at 11:31:30PM +0200, Maurice Janssen wrote:
>> I have a few old computers (vax, hppa, sparc), most of them with quite
>> small hard disks. Too small to build the userland. I also have a i386
>> with more than enough disk space running as nfs server.
>> Right now, I have a /export/${arch}/src and /export/${arch}/obj for each
>> architecture. Works fine, but most of the contents of the source
>> directories is the same for each architecture. Seems like a waste of
>> resources to keep it separate.
>>
>> The FAQ mentions building a kernel with a read only source tree, but
>> nothing about userland. Is it possible to mount /usr/src read-only and
>> build the userland?
>
>Yes, 'mostly'. You *will* need to 'make obj' beforehand, but IIRC most
>everything will only write to obj when compiling. A noticeable exception
>are the kernels (but you could always symlink /usr/src/sys to somewhere
>appropriate).
>
>For a better idea, how about one of the 'remove duplicates by
>hardlinking them together' packages? It would allow you to have
>essentially identical trees without wasting more than some inodes. Other
>variations on this theme are possible, like lndir(1).
After reading your and an off-list reply and thinking about it again,
I realised that it's not really necessary to have a RO source tree.
Each architecture uses its own subdirectory for the kernel and the rest
goes to /usr/obj. The 'make obj' step for one architecture doesn't
interfere with the other architectures.
Thanks for the hint,
Maurice
