Re: [PATCH 0/3] linux-custom: Split up binaries from kernel headers to kbuild packages

[Jan Kiszka <jan.kiszka@siemens.com>]

On 09.11.22 11:32, Koch, Stefan (DI PA DCP R&D 3) wrote:
> Hi
> 
> This patchset is a set of three patches:
> - Support overwriting configured schroot dir
> - Split up binaries from kernel headers to kbuild packages
> - Update custom_kernel docs for split up of kernel scripts and tools
> 
> The main use-case was to swap out the binaries
> from the kernel headers package.
> They will be swapped out into host and target
> specific kernel kbuild packages.
> 
> The main development goals were these:
> 
> 1. Solve already known isar custom kernel
> limitations from doc/custom_kernel.inc
> - kernel headers package does not support both native
>   and cross compilation of kernel modules when cross built

Right, that requires building packages for multiple architectures. This
is the feature we need, and it has nothing to do with the kernel
packages per se.

Jan

> 
> 2. Honor recommendations for future from doc/custom_kernel.inc
> - Generate kernel headers packages for both host and target
>   when using cross build
> 
> 3. Add extensions known from debian kernel packages structure
> - Generate a kernel headers package without binaries
> - Create specific kernel kbuild packages that
>   will ship the "scripts" and "tools" binaries
> - Use symlinks to point to the "scripts" and "tools" binaries

Keep in mind that we intend to remain compatible with the layout of
Debian. Self-built kernels should remain drop-in replacements of the
Debian kernel packages. And that is true for development packages as well.

So, are your changes working against that, or are they improving
existing incompatibility with the debian packages?

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