[OE-core] [RFC][PATCH 1/6]qemuarm.conf: provide a common qemuarm machine configuration

[Bian Naimeng]

said the following on 2013-7-30 16:15:, Martin Jansa wrote:
> On Tue, Jul 30, 2013 at 09:51:54AM +0800, Bian Naimeng wrote:
>>
>> said the following on 2013-7-29 23:36:, Phil Blundell wrote:
>>> On Mon, 2013-07-29 at 12:02 +0800, Bian Naimeng wrote:
>>>> qemux86.conf: provide a common qemux86 machine configuration, 
>>>> so developer/distributor can customize their specific one.
>>>>
>>>> Although, we can modify the meta/conf/machine/qemux86.conf to customize our 
>>>> configuration, but it's uncomfortable for developer/distributor maintaining
>>>> their branch.
>>>> After applying this patch, developer can tell poky using their machine
>>>> configuration by prepending their layer to BBPATH(Of course,
>>>> the bblayers.conf should be adapted to it).
>>>
>>> I don't really understand the purpose of this patch.  Surely there is
>>> nothing to stop you from shipping an overlay qemux86.conf in some other
>>> layer today, right?  What exactly is the advantage of this extra
>>> indirection through an .inc file?
>>>
>>
>> What my purpose is that make it easy to implement the below case.
>>  1. I want inherit all the configuration item of qemux86.conf.
>>  2. I want add some new items to my qemux86.conf.
>>  3. If there're changes to qemux86.conf, i want merge them to my qemux86.conf
>>
>> Yes, we can implement this case today.
>>  1. Copy the meta/conf/machine/qemux86.conf to my layer.
>>  2. Add new items to my qemux86.conf
>>  3. Rewrite my qemux86.conf to merge community changes.
>>
>> However, if applying these patches, it becomes easy.
>>  1. add "require conf/machine/include/qemux86.inc" to my qemux86.conf
>>  2. add new items to my qemux86.conf
>>  3. modify qemux86.inc to update qemux86 configration at community, 
>>     so all community changes will be merged to my qemux86.conf automatically
>>     when merging the mainline.
> 
> Without patches
> 1. add require ${COREBASE}/meta/conf/machine/qemux86.conf at the
> beginning of your qemux86.conf copy
> 2. add new items
> 

You are right. ^_^

Thanks
 Bian

>>
>>> Also, as a side note, your patches 1/6, 2/6 and 6/6 all said
>>> "qemuarm.conf" in the subject lines but only the last of them actually
>>> contained changes to qemuarm.conf.
>>
>> Sorry for my mistake. The correct one is following.
>> 1/6: qemux86.conf.
>> 2/6: qemux86-64.conf
>>
>>>
>>> Also also, the patches in this form are quite hard to follow.  Did you
>>> use "git format-patch -M" when creating them?
>>
>> Yes, I used "git format-patch -M" to create them.
>> I will check them by linux/scripts/checkpatch.pl next time.
>>
>> Thanks
>>  bian
>>
>>>
>>> p.
>>>
>>>
>>
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