MPAB on 10.6

[Joshua Root]

On 2010-6-22 06:56 , Jordan K. Hubbard wrote:
> 
> On Jun 21, 2010, at 1:28 PM, Joshua Root wrote:
> 
>> On 2010-6-22 06:16 , Jordan K. Hubbard wrote:
>>> Depends on how you constructed the chroot - are you sure you union mounted all of the various important filesystems like devfs and fdesc?
>>
>> Nope! :-) It's blb's code, and I haven't even come close to verifying
>> that it's all doing the right thing. All that's clear is that what used
>> to work on 10.5 no longer does on 10.6.
>>
>> Do you have an example of constructing the chroot correctly?
> 
> It's not all that up-to-date, but there's always the script in base/portmgr/packaging/buildall.sh - if you look at the prepchroot() function, you'll see the union mounts required.
> 
> Note that this script also does everything on an HFSX (case-sensitive HFS) disk image with -shadow enabled, which means that all writes to it are trapped and stored in the shadow file rather than modifying the dmg to which I've copied all of the system files.  A rather convenient little feature that, without disk images, would have to be done some other way (the interposing already suggested, or some clever set of union mounts over the writable bits).

Hm, well, that seems to be what is being done here:
<http://trac.macports.org/browser/contrib/mpab/mpab-functions#L318>

... which isn't too surprising considering MPAB is inspired by DPAB
which was inspired by buildall.sh. :-)

- Josh