On 03/08/2021 10:30 AM, Chen Qi wrote:
> On 03/06/2021 07:29 AM, Richard Purdie wrote:
>> On Fri, 2021-03-05 at 18:10 +0800, Chen Qi wrote:
>>> As we delete the .git/ directory, it's impossible to get METADATA_REVISION
>>> inside eSDK. Because of this, we meet the following warning when installing eSDK.
>>>
>>>    WARNING: The base-files:do_install sig is computed to be 16b9d96148d45de183cc94667aae016ec7d102d48255456381e718cd4bbd0aa0, \
>>>    but the sig is locked to 6eb0dcaed504282becee94662481d79264db920dee1f7deda18230133fff8f36 in SIGGEN_LOCKEDSIGS_t-qemux86-64
>>>
>>> So we record METADATA_REVISION in eSDK generation time to fix this problem.
>>>
>>> Signed-off-by: Chen Qi<Qi.Chen@windriver.com>
>>> ---
>>>   meta/classes/populate_sdk_ext.bbclass | 3 +++
>>>   1 file changed, 3 insertions(+)
>> I have to wonder why base-files is depending on the metadata-revision? That
>> implies that base-files and hence anything that depends upon it would rebuild
>> each time you update to a new revision. Is that really what you want?
>>
>> Cheers,
>>
>> Richard
>>
>>
>>
>>
> Hi Richard,
>
> I tested it on pure yocto project. No extra layer or configuration.
> I'm also wondering why base-files do_install depends on 
> METADATA_REVISION. The strange thing is that things do not rebuild at 
> eSDK installation time. There's only a warning about base-files 
> do_install signature.
>

Just found answer for the above problem.
A previous commit changes poky.conf to make DISTRO_VERSION contain 
METADATA_REVISION.
"""

poky.conf: do not write current date into distro version, use git hash instead


"""

I also confirmed that merely updating the git revision will result in a 
rebuild of base-files.
Rebuild of base-files does not result in rebuild of other recipes 
because we have 'base-files' in SIGGEN_EXCLUDERECIPES_ABISAFE.

For the problem below, I haven't found the root cause, still working on it.

Best Regards,
Chen Qi

> In fact, this is a problem I found when I was dealing with another 
> problem with eSDK.
> *Yocto's current eSDK cannot be successfully installed on a different 
> distro.* For example, you build esdk on ubunt18 and install the esdk 
> on ubuntu20, then you'll get an error of pseudo do_fetch task re-run 
> unexpectedly.
> I think it might be related to NATIVELSBSTRING, but I haven't found 
> out why.
> Manually setting NATIVELSBSTRING to some fixed string such as 'Linux' 
> will solve the above problem.
>
> I'm still checking the codes. If you have some idea/suggestion, please 
> let me know.
>
> Best Regards,
> Chen Qi
>
>
> 
>