Comment 16 for bug 1815341

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mm-mbs (mm-mbs) wrote : Re: Waveforms jerk but not when another window is focused

I installed Debian Buster with Qt 5.11.3 with Mixxx 2.2.0 and there is the same problem, the waveform is scrolling smother if Mixxx is not in focus. I compile also the pull request https://github.com/mixxxdj/mixxx/pull/1974 but there is the same effect.

I remove the system Qt developer tools (headers etc) and try to compile Qt 5.12.1 again. Before compile Mixxx I set the PKG_CONFIG_PATH to /mnt/home/qt/lib/pkgconfig and now Mixxx found the new Qt library. But now Mixxx show another error on configure:

Configuring Qt
Checking for Qt5Core (5.0 or higher)... yes
Checking for C library Qt5X11Extras... no
ERROR:root:Unmet dependency: Could not find Qt5X11Extras or its development headers

How I compile Qt5X11Extras?