[mythtv-users] 0.27 configure script does not recognize OpenGL

[Dan Littlejohn]

I had the same error

# pkg-config --list-all | grep Qt | grep OpenGL | awk '{print $1}'
Variable 'exec_prefix' not defined in '/usr/lib/pkgconfig/libsasl2.pc'

And that is owned by the package cyrus-sasl.  So I removed it (temporarily)
and the command returns OpenGL and Mythtv also configures correctly
recognizing OpenGL.

I believe this is a Gentoo package problem and now I and trying upgrading
the packages on my box to see if that fixes it (ie emerge -uDvdN world)

Dan


On Thu, Jan 23, 2014 at 1:35 AM, Jean-Yves Avenard <jyavenard at gmail.com>wrote:

> On 23 January 2014 17:28, Thomas Börkel <thomas at boerkel.de> wrote:
> > HI!
> >
> > On 22.01.2014 23:04, Jean-Yves Avenard wrote:
> >
> >>> pkg-config --list-all | grep Qt | grep OpenGL | awk '{print $1}'
> >>
> >> this should return QtOpenGL if everything is good, then you do:
> >>
> >> pkg-config --variable=qt_config QtOpenGL
> >>
> >> (replace QtOpenGL with whatever "pkg-config --list-all | grep Qt |
> >> grep OpenGL | awk '{print $1}'" returned)
> >
> > Although the first command does not output anything, my Qt installation
> > must have OpenGL, because 0.26 configure does find it and I can enable
> > the OpenGL painter in 0.26.
>
> 0.26 didn't have the workaround that determine if you're running
> OpenGL ES or OpenGL.
>
> the configure script uses pkg-config utility to determine what the
> various configuration of the packaged installed. Here it seems that
> pkg-config is either not configure properly or doesn't know about Qt.
>
> As such, the configure scripts considers that Qt doesn't have OpenGL
> support and doesn't activate it...
>
> If you do have pkg-config installed and configure, you should check
> the Qt package so it properly sets pkg-config information
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