[Buildroot] [PATCH 1/2] qemu-system: new host package

[Arnout Vandecappelle <arnout@mind.be>]

On 06/12/13 02:14, Frank Hunleth wrote:
> On Thu, Dec 5, 2013 at 5:31 PM, Thomas Petazzoni
> <thomas.petazzoni@free-electrons.com> wrote:
>> Dear Arnout Vandecappelle,
>>
>> On Thu, 05 Dec 2013 18:49:48 +0100, Arnout Vandecappelle wrote:
>>
>>>>> Yes, I agree, the user mode emulation should probably be removed. It
>>>>> simply cannot work properly, because we have no way of guaranteeing
>>>>> that the kernel headers used for the target toolchain are older than
>>>>> the kernel running on the system.
>>>
>>>    It's not possible to do it in Config.in, but it's easy to do during the
>>> build: compare /usr/include/linux/version.h with
>>> $(STAGING_DIR)/usr/include/linux/version.h
>>
>> And then you fail the build if
>> $(STAGING_DIR)/usr/include/linux/version.h gives a newer version
>> of /usr/include/linux/version.h ? Could be possible, even if not really
>> nice. But Fran?ois is proposing to remove cpanminus, which was the only
>> reason to have qemu-user support. So do we care?
>
> I care a little (for as much as that counts), but not enough to argue
> for keeping it if it is becoming a pain. We use qemu-user in a
> post-build step to run a battery of regression tests on algorithmic
> code. It has been convenient since the regression test data is too
> large to run in one pass on the target hardware. It's also faster to
> run on our PCs. I don't think that the regression tests exercise any
> of the issues above.

  That seems to me like a valuable use case. But you would need a 
Config.in.host for it so it actually becomes visible, right? Care to 
contribute that?

  Regards,
  Arnout


-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
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