[Xen-devel] Re: [PATCH 1/4] xen: Clean up build system

[Alexander Graf <agraf@xxxxxxx>]

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?


Alex


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