[Buildroot] Finding the linux kernel headers version of a gcc cross toolchain

[Baruch Siach]

Hi L-C,

On Fri, Apr 17 2020, Laurentiu-Cristian Duca wrote:
> Hello buildroot community,
>
>   When choosing an external toolchain for Buildroot
> we must specify the kernel headers version used to build the
> corresponding toolchain.
> Can you please tell me how to detect the kernel headers version of the
> external toolchain?

Look for the linux/version.h header file from your toolchain. Use the
LINUX_VERSION_CODE and KERNEL_VERSION macros that this file defines to
find the kernel headers version.

baruch

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