[Slackbuilds-users] vlc slackbuild

Christoph Willing chris.willing at linux.com
Sat Feb 23 03:17:38 UTC 2019

On 23/2/19 3:51 am, Tim Dickson via SlackBuilds-users wrote:
> On 22/02/2019 12:51, Christoph Willing wrote:
>> On 22/2/19 8:33 pm, Tim Dickson via SlackBuilds-users wrote:
>>> vlc was built with the options OPENCV=yes WAYLAND=yes
>>> I can provide all the build options chosen for all the deps if it would
>>> help.
>> I admit that I don't test that particular option combination very often.
>> I just rebuilt vlc with OPENCV=yes (using opencv-legacy) and a quick
>> test of the resulting vlc was fine.
>> However the wayland option is quite time consuming to test since it
>> requires qt5 to have been (re)built with wayland, wayland-egl &
>> wayland-protocols already installed. It's now late enough here that it
>> will be an overnight job to rebuild qt5 and then vlc.
>> In the meantime, could you build & test vlc without wayland support?
>> Success there would indicate that wayland support is the problem. Then
>> we'd have to figure out a possible fix or just not support that option
>> any more.
>> chris
> I've now also tried the other way around, enable wayland and disable
> opencv (legacy) and it now runs without seg-faulting, which is the
> opposite result of your test!. I'm open to more suggestions, although at
> least it runs now,

I finished building wayland enabled (but otherwise standard) qt5 and vlc
in a stock 14.2 x86_64 VM with opencv-legacy. It runs normally - no
segfault and I can play a test video with it.

When run it from a terminal, the only new output is:
    libEGL warning: DRI2: failed to authenticate
but it has no apparent effect to the running vlc.

Since you're segfault-free after removing opencv-legacy, I guess that's
the place to look for a cause - perhaps some exotic option it's built with?


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