Commits on Dec 20, 2023

1. Add script for checking resulting kernel config …

   There is bunch of kernel config options that are not propagated
   correctly to the kernel configuration after fragments are merged
   and processed by Kconfig. Current Buildroot tools are not good at
   discovering these - while we cleaned up most inconsistencies by using
   linux-diff-config and output from the merge_config.sh script, there
   are still options that were removed or get a different value than
   intended because of dependencies, etc.
   
   This commit adds a Python script that is using Kconfiglib to parse
   current kernel's Kconfig files and the generated .config and compare
   the requested values from individual kernel config fragments. The
   script can be used manually by running `make linux-check-dotconfig`
   from the buildroot directory (with path to BR2_EXTERNAL directory set)
   and it's called also from the CI, where it generates Github Workflow
   warning annotations when some of the values are not present or when set
   incorrectly.
   
   The kconfiglib.py is checked-in to the repo as well, because the library
   is currently abandoned on PyPI and packaged version has a bug that causes
   errors parsing Kconfigs in newer Linux versions, fixed in outstanding
   pull request ulfalizer/Kconfiglib#119 - so version from this PR is used
   here.
   
   If pypi/support#2526 is ever resolved, we could remove it from our repo
   and use pip for installing the package as a requirement during build
   of the build container.

   

   sairon committed Dec 20, 2023
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