[Buildroot] [PATCH 4/4] linux-headers: match headers for the latest kernel
Yann E. MORIN
yann.morin.1998 at free.fr
Fri Jul 1 16:06:56 UTC 2016
Vivien, All,
On 2016-04-19 16:52 -0400, Vivien Didelot spake thusly:
> The point of choosing BR2_LINUX_KERNEL_LATEST_VERSION alongside
> BR2_KERNEL_HEADERS_FROM_KERNEL is not to care about bumping the kernel
> and its headers used in the toolchain in later Buildroot releases.
>
> When using the latest kernel and its headers, automatically set the
> headers version to at least BR2_LINUX_KERNEL_VERSION.
>
> A similar change can be done for BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE,
> but this is less trivial since it requires parsing the free form string.
We've also discussed this patch today, and we've come to a simpler
solution: default to the latest kernel version for the custom headers.
I've sent the patch:
https://patchwork.ozlabs.org/patch/643102/
So, I've marked this patch as superseded in patchwork.
Thanks!
Regards,
Yann E. MORIN.
> Signed-off-by: Vivien Didelot <vivien.didelot at savoirfairelinux.com>
> ---
> package/linux-headers/Config.in.host | 12 ++++++++++--
> 1 file changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/package/linux-headers/Config.in.host b/package/linux-headers/Config.in.host
> index baadb2e..15136df 100644
> --- a/package/linux-headers/Config.in.host
> +++ b/package/linux-headers/Config.in.host
> @@ -12,7 +12,9 @@ choice
> version you intend to use on your target system.
>
> Select BR2_KERNEL_HEADERS_FROM_KERNEL to use the header files from
> - the kernel source you are building for your target.
> + the kernel source you are building for your target. Unless you chose
> + BR2_LINUX_KERNEL_LATEST_VERSION, you must specify the custom kernel
> + headers series below.
>
> Select any other choices to download and use an independent kernel
> version for its headers. Useful when you are not building the kernel.
> @@ -20,6 +22,8 @@ choice
> config BR2_KERNEL_HEADERS_FROM_KERNEL
> bool "From the kernel source"
> depends on BR2_LINUX_KERNEL
> + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 if \
> + BR2_LINUX_KERNEL_LATEST_VERSION
>
> config BR2_KERNEL_HEADERS_3_2
> bool "Linux 3.2.x kernel headers"
> @@ -96,7 +100,9 @@ config BR2_DEFAULT_KERNEL_VERSION
>
> choice
> bool "Custom kernel headers series"
> - depends on BR2_KERNEL_HEADERS_VERSION || BR2_KERNEL_HEADERS_FROM_KERNEL
> + depends on BR2_KERNEL_HEADERS_VERSION || \
> + (BR2_KERNEL_HEADERS_FROM_KERNEL && \
> + !BR2_LINUX_KERNEL_LATEST_VERSION)
> default BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_REALLY_OLD
> help
> Set to the kernel headers series you manually set above.
> @@ -228,4 +234,6 @@ config BR2_DEFAULT_KERNEL_HEADERS
> default "4.3.6" if BR2_KERNEL_HEADERS_4_3
> default "4.4.7" if BR2_KERNEL_HEADERS_4_4
> default "4.5.1" if BR2_KERNEL_HEADERS_4_5
> + default BR2_LINUX_KERNEL_VERSION if BR2_KERNEL_HEADERS_FROM_KERNEL && \
> + BR2_LINUX_KERNEL_LATEST_VERSION
> default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION
> --
> 2.8.0
>
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