[OE-core] [oe] [PATCH 0/1] Solving the GTK+ libgl runtime dependency issue

[Jussi Kukkonen]

On 15 October 2015 at 20:26, Andreas Müller <schnitzeltony at googlemail.com>
 wrote:

> On Fri, Oct 9, 2015 at 2:20 PM, Jussi Kukkonen <jussi.kukkonen at intel.com>
> wrote:
> >
> > Recap of the situation as I understand it:
> > * Gtk+3 works fine without any OpenGL, if GtkGLArea is not used
> > * When GtkGLArea is used, Gtk+ uses libepoxy which is supposed
> >   dlopen the correct libraries as they are needed
> I have several gtk3+ applications that stopped working. E.G
> network-manager-applet has stopped working: running
> nm-connection-editor fails with 'Couldn't open libGL.so.1'. Same for
> parole.
>

I just realized this  as well. Gdk initialization calls epoxy which calls
exit() if libGL.so.1 is not there. This is clearly a major problem as it
happens for all GTK+ applications, not just GL users.

As an aside the reason this didn't come up before was that something seems
to cache that initialization: If I run an application with libGL.so.1 in
place once, I can then remove the library and run the application again
successfully... Not sure what's going on there but it did hide the problem
from me.

A quick workaround is setting environment variable "GDK_GL=disabled". I'm
looking at other possible fixes now.

Jussi
​
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