Re: [PATCH 0/2] Add support for per-kernel recipe variants

["'Florian Bezdeka' via isar-users" <isar-users@googlegroups.com>]

On Mon, 2025-04-07 at 09:01 -0700, chris.larson via isar-users wrote:
> From: Christopher Larson <chris.larson@siemens.com>
> 
> Add support for per-kernel recipe variants. This aids in the ability for a
> MACHINE to support multiple kernels, by allowing us to generate per-kernel
> variants in recipes like external kernel modules.
> 
> A new variable KERNEL_NAMES will list the kernels for which variants will be
> generated. It defaults to KERNEL_NAME. While this variable lists all supported
> kernels for the current machine, a variant will not be generated for
> KERNEL_NAME, assuming that's the recipe's baseline. Each variant listed in
> KERNEL_NAMES will add kernel-<kernel_name> to the OVERRIDES variable, and
> per-kernel:<kernel_name> to the BBCLASSEXTEND variable. In addition,
> KERNEL_NAME will be set to the kernel name for the current variant.

I'm missing the documentation for the new `KERNEL_NAMES` variable.

In addition you explained how this works, but what is the use case
behind? I can build multiple kernels per machine now, but when is this
needed?

> 
> In a recipe that already uses KERNEL_NAME and appends it to its PN, all you
> need to do to use this is to inherit per-kernel, and add any additional kernels
> you want to support to KERNEL_NAMES. The second patch in this series
> does so for external kernel modules by default, but this will have no effect
> on existing recipes unless KERNEL_NAMES is set to something other than
> KERNEL_NAME.
> 
> Christopher Larson (2):
>   per-kernel.bbclass: add class
>   linux-module: inherit per-kernel
> 
>  meta/classes/per-kernel.bbclass             | 35 +++++++++++++++++++++
>  meta/recipes-kernel/linux-module/module.inc |  2 +-
>  2 files changed, 36 insertions(+), 1 deletion(-)
>  create mode 100644 meta/classes/per-kernel.bbclass
> 
> -- 
> 2.47.2

-- 
You received this message because you are subscribed to the Google Groups "isar-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to isar-users+unsubscribe@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/isar-users/06034fe351d1b0f718c5de20fcfd4069ce1bd497.camel%40siemens.com.