[PATCH] kbuild: Bump the build system to 6.1

[Frieder Schrempf]

Hi Ilias,

On 11.02.26 16:25, Ilias Apalodimas wrote:
> Hi Frieder
> 
> On Wed, 11 Feb 2026 at 15:35, Frieder Schrempf
> <frieder.schrempf at kontron.de> wrote:
>>
>> 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
> 
> Does the below fix it ?

Yes it does!

Thanks
Frieder

> diff --git a/tools/Makefile b/tools/Makefile
> index 0ac683ac3ec7..c4308304d99a 100644
> --- a/tools/Makefile
> +++ b/tools/Makefile
> @@ -356,9 +356,9 @@ override HOSTCFLAGS = $(CFLAGS)
> 
>  quiet_cmd_crosstools_strip = STRIP   $^
>        cmd_crosstools_strip = $(STRIP) $^; touch $@
> -$(obj)/.strip: $(call objectify,$(filter $(hostprogs-always-y)))
> +$(obj)/.strip: $(call objectify,$(filter $(always),$(hostprogs-y)))
>         $(call cmd,crosstools_strip)
> 
> -always-y += .strip
> +always += .strip
>  endif
>  clean-files += .strip
> 
> Thanks
> /Ilias
>>
>> 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