[oe] [meta-oe][PATCH] cpupower: update license file checksum

[Daniel Díaz]

Hello!

On Mon, 22 Apr 2019 at 15:15, Martin Jansa <martin.jansa at gmail.com> wrote:
> NAK
>
> This completely defeats the purpose of LIC_FILES_CHKSUM.
> If the COPYING file vary across releases than LIC_FILES_CHKSUM should be updated when needed while verifying that the LICENSE value is still correct.
> If you use COMMON_LICENSE_DIR and completely ignore the license in the source, then it won't ever warn the user that the license was changed while upgrading to newer release.

I understand the sentiment and agree to the principle. Besides,
licensing of the kernel source code does not change too often -- Last
change in the kernel was over a year ago, and it was not relicensed,
just reshuffled.

This does, however, blocks us from switching kernels or building
different versions with the same OE baseline. Our [1] main targets are
Linux LTS's: 4.4, 4.9, 4.14, 4.19, and (currently) 5.0; we also build
Linux mainline and Linux next. For automated bisections or for a
kernel developer tree, we have to rely on the given kernel source
code, which might contain any license that cpupower has had in the
past. We know for sure that _that_ is GPL-2, but we can't adjust the
checksum on the fly.

We're fine carrying this patch in our trees, as we can burden
ourselves with looking at licensing of the kernel, but because this
was so promptly NAKed, I also very much would like to hear feedback on
how to deal with such limitation in a way that could be acceptable in
meta-oe.

Thanks and greetings!

Daniel Díaz
daniel.diaz at linaro.org


[1] https://lkft.linaro.org/about/


> On Mon, Apr 22, 2019 at 10:09 PM Daniel Díaz <daniel.diaz at linaro.org> wrote:
>>
>> The Linux kernel is GPLv2, at least as far cpupower is
>> concerned. Because this recipe reuses the kernel code, and
>> said source code can (does) vary across different releases,
>> it's best to refer to license by its name.
>>
>> Use GPL-2.0 from OE common license dir.
>>
>> Signed-off-by: Daniel Díaz <daniel.diaz at linaro.org>
>> ---
>>  meta-oe/recipes-kernel/cpupower/cpupower.bb | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/meta-oe/recipes-kernel/cpupower/cpupower.bb b/meta-oe/recipes-kernel/cpupower/cpupower.bb
>> index 928973871..c7ea087a5 100644
>> --- a/meta-oe/recipes-kernel/cpupower/cpupower.bb
>> +++ b/meta-oe/recipes-kernel/cpupower/cpupower.bb
>> @@ -2,7 +2,7 @@ SUMMARY = "Shows and sets processor power related values"
>>  DESCRIPTION = "cpupower is a collection of tools to examine and tune power \
>>  saving related features of your processor."
>>  LICENSE = "GPLv2"
>> -LIC_FILES_CHKSUM = "file://COPYING;md5=bbea815ee2795b2f4230826c0c6b8814"
>> +LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425610833a22dbe6"
>>  DEPENDS = "pciutils gettext-native"
>>  PROVIDES = "virtual/cpupower"
>>
>> --
>> 2.17.1
>>
>> --
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