[Buildroot] [PATCH 00/12] Ensure extractor dependencies are taken into account

[Yann E. MORIN <yann.morin.1998@free.fr>]

Thomas, All,

On 2019-12-10 22:59 +0100, Thomas Petazzoni spake thusly:
> This series solves that by introducing an extractor-pkg-dependency
> that returns the list of packages that must be added to
> <pkg>_EXTRACT_DEPENDENCIES to extract the archive passed as
> argument. It is then used in package/pkg-generic.mk to replace the
> existing logic to calculate <pkg>_EXTRACT_DEPENDENCIES, and then in
> the several places where suitable-extractor was used to manually
> extract a tarball.

Here is a summarry of our little discussion on IRC:

  - the extract dependencies for the main _SOURCE are automatically
    computed by Buildroot, but not for the _EXTRA_DOWNLOADS, which is
    not very systematic;

  - practically 99% of EXTRA_DOWNLOADS that are compressed, will be
    extracted at build time; the cases for (e.g.) an .xz to be stored
    as-is on the target is expected to be very rare;

  - so we should change the logic in this way (basically):

    $(2)_EXTRACT_DEPENDENCIES = $(foreach URI,$($(2)_SOURCE) $($(2)_EXTRA_DOWNLOADS),$(call extractor-pkg-dependency,$(notdir $(URI))))

Regards,
Yann E. MORIN.

> We also rename extractor-dependency to extractor-system-dependency to
> clarify its difference from extractor-pkg-dependency, and we rework
> the implementation of extractor-system-dependency.

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