[PATCH] kbuild: Bump the build system to 6.1

[Frieder Schrempf]

On 16.12.25 10:16, Ilias Apalodimas wrote:
> From: Sughosh Ganu <sughosh.ganu at linaro.org>
> 
> Our last sync with the kernel was 5.1.
> 
> We are so out of sync now, that tracking the patches and backporting
> them one by one makes little sense and it's going to take ages.
> 
> This is an attempt to sync up Makefiles to 6.1.
> Unfortunately due to sheer amount of patches this is not easy to review,
> but that's what we decided during a community call for the bump to 5.1,
> so we are following the same guidelines here.
> 
> Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
> Signed-off-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>a #rebased on -next

To me, it looks like this is breaking "make cross_tools" in some way. Or
am I missing something?

With v2026.04-rc2:

> make tools-only_defconfig
> make cross_tools
  UPD     include/generated/timestamp_autogenerated.h
  PYMOD   rebuild
tools/Makefile:359: *** insufficient number of arguments (1) to function
'filter'.  Stop.
make: *** [Makefile:2191: tools] Error 2

If the problem is not on my end, then I would have assumed the CI would
be able to catch it. But "make cross_tools" is not part of any test, right?

Best regards
Frieder