Building qt5.git supermodule with examples requires an active wayland display

../qt5-git/configure -debug -qpa wayland -linker lld -developer-build -make examples  --  -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++

FAILED: qtquick3d/tests/baseline/scenegrabber/.ibl/OpenfootageNET_lowerAustria01-1024.ktx /home/builder/developer_build/qtquick3d/tests/baseline/scenegrabber/.ibl/OpenfootageNET_lowerAustria01-1024.ktx 
cd /home/builder/developer_build/qtquick3d/tests/baseline/scenegrabber && /home/builder/developer_build/qtbase/bin/balsam --no-plugins -o /home/builder/developer_build/qtquick3d/tests/baseline/scenegrabber/.ibl /home/builder/qt5-git/qtquick3d/tests/baseline/data/shared/maps/OpenfootageNET_lowerAustria01-1024.hdr
error: XDG_RUNTIME_DIR is invalid or not set in the environment.
Failed to create wl_display (No such file or directory)
qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: xcb, wayland, linuxfb, eglfs, minimalegl, vkkhrdisplay, vnc, minimal, offscreen.

Aborted