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xen-devel
[Xen-devel] Re: [PATCH 1/4] xen: Clean up build system
On 21.06.2011, at 09:57, Jan Kiszka wrote:
> On 2011-06-21 09:46, Alexander Graf wrote:
>>
>> On 21.06.2011, at 09:27, Jan Kiszka wrote:
>>
>>> On 2011-06-21 09:26, Alexander Graf wrote:
>>>>
>>>> On 21.06.2011, at 09:23, Jan Kiszka wrote:
>>>>
>>>>> On 2011-06-21 09:21, Alexander Graf wrote:
>>>>>>
>>>>>> On 21.06.2011, at 08:26, Jan Kiszka wrote:
>>>>>>
>>>>>>> From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
>>>>>>>
>>>>>>> Introduce CONFIG_XEN_BACKEND so that this new config solely controls the
>>>>>>> target-independent backend build and CONFIG_XEN can focus on per-target
>>>>>>> building.
>>>>>>
>>>>>> What's the incentive here? I very much doubt we'll ever want to support
>>>>>> xen on !x86. In fact, the better solution would probably be to just move
>>>>>> every build component to x86 specific code.
>>>>>
>>>>> I doubt that as well. But keeping the backend centrals prevent building
>>>>> them twice (for i386 and x86_64).
>>>>
>>>> How can we not build them twice without risking that target_ulong breaks
>>>> somewhere along the way?
>>>
>>> Because the backends don't depend on that. And we already build them
>>> only once, your your logs. :)
>>
>> So what does the patch change then if it's already only built once?
>
> It allows to clean up Makefile.target like I did as CONFIG_XEN is no
> longer defined for all targets but only for those that actually support Xen.
Seems to make sense. Let's hope it doesn't break anything :)
Alex
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