[oe] [PATCH] classes/base.bbclass: add INCOMPATIBLE_MACHINE

[Frans Meulenbroeks]

2010/7/7 Phil Blundell <philb at gnu.org>:
> On Wed, 2010-07-07 at 20:49 +0200, Frans Meulenbroeks wrote:
>> 2010/7/7 Frans Meulenbroeks <fransmeulenbroeks at gmail.com>:
>> > added INCOMPATIBLE_MACHINE
>> > we have COMPATIBLE_MACHINE but that does not allow to say that
>> > a package is supported by all except a certain machine.
>> > a regexp like "(?!arch)"
>> > This mechanism can be used to exclude certain machines.
>> > Idea is that in binutils and gcc you can use this to specify that
>> > a certain version does not support a certain machine
>>
>> actually what I wanted to say in the commit message is that a regexp
>> like (?!arch) does not work.
>> \b(?!arch) or ^(?!arch) didn't work either and consulting #python did
>
> This might just be an accident of wording, but you do realise that
> COMPATIBLE_MACHINE is tested against ${MACHINE} (i.e. not any of the
> ${xx_ARCH} variables), right?  If you want to test arches then you want
> ${COMPATIBLE_ARCH}.
>
> I just did a quick test with (?!foo) in C_M and it seemed to work ok for
> me.  Specifically:
>
> MACHINE = goodmach
> COMPATIBLE_MACHINE = "(?!badmach)"
>
> works, whereas
>
> MACHINE = badmach
> COMPATIBLE_MACHINE = "(?!badmach)"
>
> is rejected.  What exactly goes wrong for you?

Aargh, yes I was using COMPATIBLE_MACHINE to test against an arch.

COMPATIBLE_ARCH does not exist at the moment.
Is there interest in it? (or in other words, do I have a chance I get
acks for it, if not I'd rather save myself the effort writing a patch

Frans