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Date:      Thu, 22 Oct 2020 21:35:35 +0200
From:      Niclas Zeising <zeising@freebsd.org>
To:        Kyle Evans <kevans@freebsd.org>, Warner Losh <imp@bsdimp.com>
Cc:        "Alexander V. Chernikov" <melifaro@ipfw.ru>, Hans Petter Selasky <hps@selasky.org>, Emmanuel Vadot <manu@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r366372 - in head/sys: compat/linuxkpi/common/include/linux compat/linuxkpi/common/src conf
Message-ID:  <d48584a4-50df-70a3-8859-a0fa94f6cc45@freebsd.org>
In-Reply-To: <CACNAnaHfeMo6W1ReEq8DGiVy8pURWtvtOCRkr2VW51xiiB7drw@mail.gmail.com>
References:  <202010021826.092IQfdj023808@repo.freebsd.org> <44421602932538@mail.yandex.ru> <de21fae4-d362-d938-a382-6ab08168e149@selasky.org> <43251602934532@mail.yandex.ru> <f384771b-c68a-ab60-2fe1-e1f2011ea198@selasky.org> <59021602950992@mail.yandex.ru> <CANCZdfoWMxccQBZBry18VDDzyUH2Dr44UasKb4qayxFTiLCGug@mail.gmail.com> <CACNAnaHfeMo6W1ReEq8DGiVy8pURWtvtOCRkr2VW51xiiB7drw@mail.gmail.com>

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On 2020-10-22 15:22, Kyle Evans wrote:
> On Sat, Oct 17, 2020 at 11:40 AM Warner Losh <imp@bsdimp.com> wrote:
>>
>>
>>
>> On Sat, Oct 17, 2020, 10:11 AM Alexander V. Chernikov <melifaro@ipfw.ru> wrote:
>>>
>>> 17.10.2020, 14:07, "Hans Petter Selasky" <hps@selasky.org>:
>>>
>>> On 2020-10-17 14:34, Alexander V. Chernikov wrote:
>>>
>>>   17.10.2020, 12:32, "Hans Petter Selasky" <hps@selasky.org>:
>>>
>>>        On 2020-10-17 13:27, Alexander V. Chernikov wrote:
>>>
>>>              02.10.2020, 19:26, "Emmanuel Vadot" <manu@freebsd.org
>>>            <mailto:manu@freebsd.org>>:
>>>
>>>                   Author: manu
>>>                   Date: Fri Oct 2 18:26:41 2020
>>>                   New Revision: 366372
>>>                   URL: https://svnweb.freebsd.org/changeset/base/366372
>>>
>>>                   Log:
>>>                      linuxkpi: Add backlight support
>>>
>>>                      Add backlight function to linuxkpi.
>>>                      Graphics drivers expose the backlight of the panel directly so
>>>            allow them
>>>                   to use the backlight subsystem so
>>>                      user can use backlight(8) to configure them.
>>>
>>>                      Reviewed by: hselasky
>>>                      Relnotes: yes
>>>                      Differential Revision: The FreeBSD Foundation
>>>
>>>                   Added:
>>>                      head/sys/compat/linuxkpi/common/include/linux/backlight.h
>>>            (contents,
>>>                   props changed)
>>>                   Modified:
>>>                      head/sys/compat/linuxkpi/common/include/linux/device.h
>>>                      head/sys/compat/linuxkpi/common/src/linux_kmod.c
>>>                      head/sys/compat/linuxkpi/common/src/linux_pci.c
>>>                      head/sys/conf/kmod.mk
>>>
>>>              It breaks the build for me with
>>>              /usr/home/melifaro/free/head/sys/compat/linuxkpi/common/src/linux_pci.c:70:10:
>>>              fatal error: 'backlight_if.h' file not found
>>>
>>>
>>>        How do you build? Doesn't break over here.
>>>
>>>   GENERIC + COMPAT_LINUXKPI.
>>>
>>>
>>>
>>> Try adding:
>>>
>>> options backlight
>>>
>>> To the kernel config.
>>>
>>> Yep, thank you!
>>> Maybe it's worth considering adding static assert with the message describing this dependency?
>>
>>
>> Yes. It likely is worth doing something to highlight this issue.
>>
>> Warner
>>
> 
> I think we just need to slap the two core backlight files with an ` |
> compat_linux` so that they simply get pulled in if you specify
> COMPAT_LINUX. config(8) handles this terribly, configng must have a
> better provides/requires/implies/whatever functionality so we can
> specify that compat_linux implies backlight and not do crud like this
> where it becomes more complicated to see what any given option really
> entails.
> 
> Thanks,

COMPAT_LINUX can't be right.  Isn't that the linuxolator?
Regards
-- 
Niclas Zeising



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