[OE-core] [PATCH v3][master-next] kernel: use olddefconfig as the primary target for KERNEL_CONFIG_COMMAND

[Andre McCurdy]

On Tue, Oct 30, 2018 at 12:05 PM Bruce Ashfield
<bruce.ashfield at windriver.com> wrote:
>
> As was warned by commit 312ee68752fa [kconfig: announce removal of
> oldnoconfig if used], oldnoconfig has been removed from the 4.20 kernel.
>
> So we switch our default mode to olddefconfig.
>
> commit fb16d8912 [kconfig: replace 'oldnoconfig' with 'olddefconfig',
> and keep the old name as an alias] introduced olddefconfig in the 3.10
> kernel, we shuffle oldnoconfig to the fallback target.
>
> The fallback mode allows kernels between 3.10 and the currently listed
> oldest kernel of 3.2 to continue to configure.
>
> Signed-off-by: Bruce Ashfield <bruce.ashfield at windriver.com>
> ---
>
> v3: dropped 'yes' from the pipeline
>
> v2: Tweaked to add a fallback mode as suggested by Andre McCurdy
>
> Not for the release, just wanted to get this in the queue for
> when master reopens so we'll be ready for 4.20+ kernel versions
>
> Tested by configuring linux-yocto*
>
> Bruce
>
>
>  meta/classes/kernel.bbclass | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
> index e04d2fe00434..880c5ef17283 100644
> --- a/meta/classes/kernel.bbclass
> +++ b/meta/classes/kernel.bbclass
> @@ -492,7 +492,7 @@ sysroot_stage_all () {
>         :
>  }
>
> -KERNEL_CONFIG_COMMAND ?= "oe_runmake_call -C ${S} CC="${KERNEL_CC}" O=${B} oldnoconfig"
> +KERNEL_CONFIG_COMMAND ?= "oe_runmake_call -C ${S} CC="${KERNEL_CC}" O=${B} olddefconfig || oe_runmake -C ${S} O=${B} CC="${KERNEL_CC}" oldnoconfig"

Apart from inexplicably swapping the positions of the O= and CC=
options on the fallback command line (?!?), this version looks good.

>  python check_oldest_kernel() {
>      oldest_kernel = d.getVar('OLDEST_KERNEL')
> --
> 2.5.0
>
> --
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