How to tell a arch-all package to build on specific architecture?

[Scott Ritchie]

On 02/26/2012 04:50 AM, Stefano Rivera wrote:
> Hi Andreas (2012.02.26_14:05:59_+0200)
>> by default, arch: all packages are built on the i386 buildds. That is
>> fine for most packages, but I found one where it isn't, openbios-ppc.
>>
>> This needs a powerpc to build on, see https://pad.lv/935018.
>>
>> How can one do that in Ubuntu?
> 
> One can't. That package has never built in Ubuntu.
> 
> SR
> 

The multiarch spec contained a proposal to annotate arch:all packages
with a Build-Architecture field, but I don't believe anyone has
implemented it.

Thanks,
Scott Ritchie