[Buildroot] [PATCH 01/15] fs: add genimage infra
Peter Korsgaard
peter at korsgaard.com
Thu Apr 14 08:33:35 UTC 2016
>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni at free-electrons.com> writes:
Hi,
>> # Make sure the genimage dependencies appear in graph-depends
>> show-targets:
>> @echo $(ROOTFS_GENIMAGE_DEPENDENCIES)
> But then is it really something that belongs to fs/ ? It really isn't a
> filesystem.
No, it is closer to the post-image script. Where do you suggest to move
it? system/?
>> However, I'm afraid that we're moving a bit too fast after all. There are
>> several open issues still:
>>
>> - Do post-image scripts come before or after genimage?
>> - What with the dosfstools/mtools dependency?
>> - Should we support genimage.cfg files that are generated from a post-image script?
>> - Should we support several genimage.cfg files, producing several images (e.g. a
>> NAND and a SD image)?
>>
>> So, the current approach works well for the bundled defconfigs, but for real
>> use cases I think it's a bit too limited to be practical after all.
> Do we need to support all real use cases? I think we should support the
> common use cases, and the more complicated use cases can be handled via
> a special post-image script. That's really the general philosophy of
> Buildroot IMO: handle the most common cases nicely, and leave enough
> extension scripts/hooks to allow people to plug their scripts to handle
> the more complicated/specific cases.
Agreed, but it is good to think about the questions Arnout listed to
think about what is really the common use case.
The definition of the post-image script was to run something at the very
end, so I think we should do genimage before post-image (even though I
could imagine use cases for the opposite as well).
For the dosfstools/mtools dependencies I think a simple sub option
pulling them in is most sensible.
Supporting multiple genimage.cfg files (like we do for device_tables /
post-build / post-image, ..) IMHO makes sense and looks simple to do.
--
Venlig hilsen,
Peter Korsgaard
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