[OE-core] [oe-core][PATCH 1/1] qemumips64: no qemu-usermode for n32

[Andre McCurdy]

On Wed, Oct 25, 2017 at 4:14 AM, Alexander Kanavin
<alexander.kanavin at linux.intel.com> wrote:
> On 10/25/2017 02:43 AM, Andre McCurdy wrote:
>>
>> On Tue, Oct 24, 2017 at 4:23 PM, Joe Slater <jslater at windriver.com> wrote:
>>>
>>> qemu-usermode is only available for mips64 and o32 code.
>>
>> Isn't that already handled by meta/conf/machine/include/mips/arch-mips.inc
>>
>>    # user mode qemu doesn't support mips64 n32: "Invalid ELF image for
>> this architecture"
>>    MACHINE_FEATURES_BACKFILL_CONSIDERED_append = "
>> ${@bb.utils.contains('TUNE_FEATURES', 'n32', 'qemu-usermode', '', d)}"
>
> Yes, but this is really unreadable isn't it :) I don't see how anyone could
> grasp that the above means "remove qemu-usermode from MACHINE_FEATURES if
> n32 is in TUNE_FEATURES" (without diving into documentation).
>
> Any better way to express this would be appreciated.

Yes, BACKFILL_CONSIDERED always has been concept which baffles a lot
of users - especially so since we quietly redefined it to mean not
only "functionality which used to always be enabled but is now
configurable" but now also "functionality which was not previously
enabled but is now configurable and we want to enable by default and
make it difficult for users to accidentally leave disabled".