qt5wayland Compositor in buildroot linux problem

[callen]

I am try to add qt5wayland to buildroot/package/qt5,the qt5wayland.mk as bellow:

After this ,run "make menuconfig" to build qt5wayland module:

Then make a firmware ,in my develop device:

I try to run pure-qml example,it failed:
.

I don't know why "QtWayland.Compositor" is not loaded as expected:
qrc:///qml/main.qml:52 module "QtWayland.Compositor" is not installed

[callen]

I found that some files is not copy to target dir,so after run below cmd,it works:
cp output/host/usr/aarch64-device-linux-gnu/sysroot/usr/qml/QtWayland/ output/target/usr/qml/ -r