[sane-devel] Getting Alpine Linux sane-backends builds compiler warning free

[Valery Kartel]

Hi,

libieee1284 is accepted, so I push a asne-backends PR with improvements
https://github.com/alpinelinux/aports/pull/2001

2017-07-25 12:24 GMT+03:00 Valery Kartel <valery.kartel at gmail.com>:

> Hi, Olaf
>
> I pushed a PR for libieee1284, so waiting for accept it.
> https://github.com/alpinelinux/aports/pull/1982
>
>
> And now I playing with sane-backends building with libpng, libieee1284 and
> linux-headers as you mentioned.
>
> There are some new backends enabled now:
> canon_pp
> hpsj5s
> mustek_pp
> v4l
>
> > I also see that you list the license as GPL in the APKBUILD file.
> Yes I set GPL as a license for this package and all its subpackages. But I
> saw its not so simple with some backends licensing.
>
> Can you provide me some idea or some list how to describe licensing right
> way for not-only-gpl parts?
>
> Thanks for advise
>
> Valery.
>
> 2017-07-22 15:52 GMT+03:00 Olaf Meeuwissen <paddy-hack at member.fsf.org>:
>
>> Hi Valery,
>>
>> I'm one of the SANE developers and am trying to get rid of all compiler
>> warnings on a select subset of build environments.  Alpine Linux is one
>> of them and its parallel port IO support is giving me a bit of trouble.
>> Hope you can help me out a bit.
>>
>> I don't see any libieee1284 packages for 3.6.  Is there any activity to
>> add libieee1284?  It would enable support for a few more backends.
>>
>> A few backends also provide parallel port IO support if certain Linux
>> kernel headers are present.  Looking at the `makedepends` list in the
>> sane package's APKBUILD file, I don't see kernel-headers listed.  Can
>> I assume that the Alpine package build environment makes sure that is
>> present?  If not, you may want to add it.  It would make at least the
>> umax_pp backend do something more useful.  Without that package, it
>> compiles but essentially just no-ops just about all the I/O after
>> spitting out a warning, IIUC.
>>
>> My builds have so far not included the kernel-headers package in the
>> list of packages to be installed but I'm leaning towards adding it.  It
>> would solve a major compiler warning headache for me ;-)
>>
>> If Alpine Linux' default build environment always includes it, I feel
>> more justified to "take the easy way out".
>>
>> You can find my build environment setup[1] as well as build logs[2] (the
>> middle stage, first on the drop-down list) over at GitLab.com.
>>
>>  [1]: https://gitlab.com/sane-project/ci-envs/blob/master/alpine-
>> 3.6-musl.df
>>  [2]: https://gitlab.com/sane-project/backends/pipelines
>>
>> Somewhat off-topic, but ...
>>
>> I also see that you list the license as GPL in the APKBUILD file.  Is
>> that for that file only or does that apply to the binary packages?
>> If the latter, it's not correct and really should be fixed.
>>
>> BTW, love the fact that you provide a package per backend!  Wishing
>> other distributions would do the same.
>>
>> Thanks for any feedback in advance,
>> --
>> Olaf Meeuwissen, LPIC-2            FSF Associate Member since 2004-01-27
>>  GnuPG key: F84A2DD9/B3C0 2F47 EA19 64F4 9F13  F43E B8A4 A88A F84A 2DD9
>>  Support Free Software                        https://my.fsf.org/donate
>>  Join the Free Software Foundation              https://my.fsf.org/join
>>
>
>
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