meta-qt6 static build - eglfs - Qt6::EglFSDeviceIntegrationPrivate not found

petero3

Have built meta-qt6 with PACKAGECONFIG += "static", but when building an app using the resulting yocto SDK:

The link interface of target "Qt6::QEglFSEmulatorIntegrationPlugin" contains: Qt6::EglFSDeviceIntegrationPrivate but the target was not found.

Therefore as per
https://doc.qt.io/Boot2Qt/b2qt-meta-qt6.html#building-a-static-version-of-qt
have added
PACKAGECONFIG += "static"
to the qtbase bbappend

And as per
https://doc.qt.io/qt-6/plugins-howto.html#importing-static-plugins-in-cmake
have added
qt_import_plugins(appminimal INCLUDE_BY_TYPE platforms Qt::QEglFSIntegrationPlugin)
to the CMakeLists.txt of the app

But get the above error.
What else is needed please?

Thank you
Peter

meta-qt6, Qt 6.10.1, Yocto Scarthgap, NXP i.MX 8X