Re: [PATCH 0/5] kbuild: uapi: improvements to header testing

[Nathan Chancellor <nathan@kernel.org>]

Hi Thomas,

On Tue, Dec 23, 2025 at 08:04:07AM +0100, Thomas Weißschuh wrote:
> Also validate that UAPI headers do not depend on libc and remove the
> dependency on CC_CAN_LINK.
> 
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
> ---
> Thomas Weißschuh (5):
>       kbuild: uapi: validate that headers do not use libc
>       hexagon: Drop invalid UAPI header asm/signal.h
>       kbuild: uapi: don't compile test bpf_perf_event.h on xtensa
>       kbuild: uapi: split out command conditions into variables
>       kbuild: uapi: drop dependency on CC_CAN_LINK
> 
>  arch/hexagon/include/{uapi => }/asm/signal.h |  0
>  init/Kconfig                                 |  2 +-
>  usr/include/Makefile                         | 87 +++++++++++++++++++++++++++-
>  3 files changed, 87 insertions(+), 2 deletions(-)

This seems like a great improvement to the UAPI header testing. I don't
see any immediate problems and it works for me in my brief local
testing. I will give a week or so for comments before I apply this to
kbuild-next (plus -next should be operating at that point).

Cheers,
Nathan