Re: [PATCH v4 0/3] linux-custom: Split up binaries from kernel headers to kbuild packages

[Uladzimir Bely <ubely@ilbers.de>]

On Mon, 2023-08-21 at 15:44 +0200, Stefan Koch wrote:
> Hi
> 
> This updated v4 patchset implement suggestions from reviewed v3
> patchset.
> It's now a set of five patches:
> - linux-custom: Split up binaries from kernel headers to kbuild
> package
> - linux-custom: Provide host and target specific kernel kbuild
> packages
> - docs: 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 into kernel kbuild package.
> This is introduced by the first commit
> "Split up binaries from kernel headers to kbuild package"
> 
> The second commit "Provide host and target specific kernel kbuild
> packages"
> introduces that the binaries could 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
> 
> 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
> 
> 4. Be user friendly
> - Avoid redundant configuration of kernel source definitions with
> user
>   actions to enable kbuild package generation
> - Use already known way to include linux-custom.inc in just one
>   own bitbake recipe that provides the kernel source definitions
> - Keep known user behavior for existing build configurations:
>   just update isar, request "-compat" (and "-native") bitbake targets
>   and kbuild packages for target and host will be created
> automatically
> 
> Best regards
> 
> Stefan
> 
> Stefan Koch (3):
>   linux-custom: Split up binaries from kernel headers to kbuild
> package
>   linux-custom: Provide host and target specific kernel kbuild
> packages
>   docs: Update custom_kernel docs for split up of kernel scripts and
>     tools
> 
>  doc/custom_kernel.md                          | 16 ++--
>  .../linux/files/debian/control.tmpl           | 25 ++++++-
>  .../linux/files/debian/isar/build.tmpl        | 12 ++-
>  .../linux/files/debian/isar/common.tmpl       | 10 +++
>  .../linux/files/debian/isar/install.tmpl      | 73 ++++++++++++++---
> --
>  .../linux/files/debian/rules.tmpl             |  2 +-
>  meta/recipes-kernel/linux/linux-custom.inc    | 53 ++++++++++++--
>  7 files changed, 155 insertions(+), 36 deletions(-)
> 

This passes fast/full CI, so we tend to apply it next week, if there
are no objections.