make buildworld 6.x on 7.x?

[Rakhesh Sasidharan]

Kris Kennaway wrote:

> Rakhesh Sasidharan wrote:
>> Hi,
>> 
>> Is it possible to do a ''make buildworld buildkernel'' of the FreeBSD 6.x 
>> series sources on a FreeBSD 7.x machine and then install them onto a 
>> FreeBSD 6.x machine?
>
> Yes, I did this a few minutes ago in fact :)  No special procedures are 
> necessary, world builds are already suitably isolated from the host system 
> for this to work.

Awesome! Infact, I didn't think it would be possible. Like you have 
separate port packages for the 6.x and 7.x trees, I thought FreeBSD 6.x 
compiled on a FreeBSD 7.x system won't run. But I was obviously wrong. 
Guess its different for the base OS eh ...?

Going by the same logic, is it possible that tomm I can download the 
sources for an OS like say, NetBSD, buildworld for it on my FreeBSD 
machine, and then install on a NetBSD machine?

Thanks,
Rakhesh

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