Re: [PATCH v3 5/5] docs: Update custom_kernel docs for split up of kernel scripts and tools

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

On 16.08.23 14:14, Koch, Stefan (DI PA DCP R&D 3) wrote:
> Signed-off-by: Stefan Koch <stefan-koch@siemens.com>
> ---
>  doc/custom_kernel.md | 17 ++++++++++-------
>  1 file changed, 10 insertions(+), 7 deletions(-)
> 
> diff --git a/doc/custom_kernel.md b/doc/custom_kernel.md
> index 73987a5b..52e03b68 100644
> --- a/doc/custom_kernel.md
> +++ b/doc/custom_kernel.md
> @@ -38,12 +38,17 @@ The linux-custom recipe provides support for:
>   7. Allow the name of the kernel image to be changed via `KERNEL_FILE` (defaults
>      to `vmlinuz`)
>  
> - 8. Produce a `linux-headers` package which includes kernel headers and kbuild
> -    scripts/tools
> + 8. Produce a `linux-headers` package which includes kernel headers
>  
> - 9. The `linux-headers` package shall support native and cross compiles of
> -    out-of-tree kernel modules. However, when built in cross-compilation mode,
> -    it cannot be used on the target so far.
> + 9. Produce a `linux-kbuild` package for both `host` and/or `target` arch
> +    which includes kbuild scripts and tools.
> +    Setting `EXTENDED_KBUILD_MODE` to `"1"` will allow using the `-compat` and
> +    `-native` multiarch bitbake targets at cross building to run additional
> +    `target` or `host` specific builds.

Why does this need an extra control? And the semantic of that mode is
also by far not clear when looking at the variable name.

Jan

> +
> +    Then the `linux-headers` package supports native and cross compiles of
> +    out-of-tree kernel modules. Even, when built in cross-compilation mode,
> +    it can be used on the target using the `linux-kbuild` package.
>  
>   10. Produce a `linux-libc-dev` package to support user-land builds
>  
> @@ -72,8 +77,6 @@ In the future, the recipe may be extended to:
>  
>   3. Be compatible with Ubuntu
>  
> - 4. When cross-building, generate kernel-headers for both host and target
> -
>  ## Examples
>  
>  The linux-custom recipe is currently used by the linux-mainline package and is

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