[PyQt] Error Building PyQt5 from Source

James Ross-Smith jars121 at gmail.com
Tue Aug 1 23:08:05 BST 2017

Thanks again Florian, much appreciated.

I didn't use the -device switch in my ./configure, which may well be the
reason I'm having this issue. I will try rebuilding Qt with this switch if
I don't have any luck with the environment export.

Speaking of the environment export, am I correct in my understanding that I
simply add the "export QT_QPA_PLATFORM=eglfs" line to /etc/environment?

I'll be giving this a go this evening.

Many thanks,


On Wed, Aug 2, 2017 at 7:59 AM, Florian Bruhin <me at the-compiler.org> wrote:

> On Wed, Aug 02, 2017 at 07:48:56AM +1000, James Ross-Smith wrote:
> > I tried running a very basic sample file last night, but received the
> error
> > along the lines of "failed to load platform plugin 'xcb'. I built Qt with
> > the ./configure flag 'no-xcb', as I will be using EGLFS instead. As such,
> > shouldn't Qt be looking to initiate EGLFS rather than xcb anyway?
> >
> > Is there a configuration option I've missed to force EGLFS?
> If I'm understanding the related Qt docs[1] properly, the -device switch
> influences the default platform plugin used?
> You might get it to run after a "export QT_QPA_PLATFORM=eglfs" or so,
> though I only played with linuxfb a bit that way.
> If that doesn't work and nobody else has an answer, the Qt Interest
> mailinglist[2] might be a better place to ask.
> Florian
> [1] http://doc.qt.io/qt-5/embedded-linux.html
> [2] http://lists.qt-project.org/mailman/listinfo/interest
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