gles2 & opengl

luz · n00b Joined: 17 Jul 2018 Posts: 5

Hi everyone,

I can't emerge @world, I've been trying for days, some packages want USE=gles2 and others want USE=opengl, some say exactly-one-of (gles2 opengl) so I can't make them all agree. I've tried changing USE flags and emerging individual packages so they don't conflict, but I've had no success. Any help would be greatly appreciated, the only thing left for me is reinstalling; if someone can help me avoid that, she/he will be a lifesaver.

Naib · Posted: Sat Aug 04, 2018 6:01 pm Post subject:

my advice would be to start off with system

emerge @system -uvDa . Get the main profile all up to date. Then the specifics of the clashes of USE flags... do per-package USE flag configuration.
/etc/portage/package/use/* will allow you to manage specific package needs on a case by case basis.

do an emerge @system then paste the output of emerge @world
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Marlo · Veteran Joined: 26 Jul 2003 Posts: 1591

Take a look here.
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luz · n00b Joined: 17 Jul 2018 Posts: 5

Many thanks for the suggestions. I'll try all of that and get back to you if I have any further problems.

Hu · Moderator Joined: 06 Mar 2007 Posts: 21674

If you still have problems, post specific output of the commands you ran, how they failed, and how you have currently configured those packages. Do not summarize or paraphrase.

luz · n00b Joined: 17 Jul 2018 Posts: 5

Please help *-* Output below:

fedeliallalinea · Posted: Mon Aug 06, 2018 6:52 pm Post subject:

You can post also emerge --info?
It's a your choice to install 9999 package?
You can post output with also -t option (emerge -uNDtp --with-bdeps=y @world)?
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Yamakuzure · Posted: Tue Aug 07, 2018 7:57 am Post subject:

Just a note: OpenGL is for Desktop systems (and laptops/notebooks of course) while GL ES is for [e]mbedded [s]ystems like mobile phones. You really only need one. And unless you are installing for a phone or tablet, you do not need USE="gles2" anywhere.

(And no, egl does not need gles2 any more. egl simply replaces glx.)
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Dr.Willy · Guru Joined: 15 Jul 2007 Posts: 547 Location: NRW, Germany

Yamakuzure · Posted: Wed Aug 08, 2018 10:53 am Post subject:

Leio · Developer Joined: 27 Feb 2003 Posts: 494 Location: Estonia

I layed out a plan what to do with these USE flags in ebuilds here:
https://archives.gentoo.org/gentoo-dev/message/e04f6d321e424a237af62721d1d09211

However I haven't had time to go further than that, and actually change the tree globally to adhere to these guidelines via a tracker bug and individual bugs to packages that don't adhere to this (blocking the tracker bug).

But yes, the idea is to end up with something where you can just have opengl OR gles2 and have things just work without any messing around per-package. We just aren't there yet. Perhaps someone could help with getting to this. This isn't exactly high priority for me right now with GNOME 3.28 and upcoming GNOME 3.30 work still to do - was just something I had to deal for gstreamer and webkit-gtk bumps myself and sort it out for them, then the proposal came naturally from there (gstreamer supports both together and has various other choices for windowing system, etc; webkit-gtk only one right now).

As for some of the issues with gstreamer I've seen posted regarding opengl and gles2 - they just need to match between GL using gstreamer packages (gst-plugins-base, gst-plugins-bad, gst-plugins-gtk, gst-plugins-vaapi), which is why there will be problems if you per-package set things for gst-plugins-base, but not the others.
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