XINPUT from XCB was requested

I want minimalistic version of qtbase without XCB. I want cross-build qtbase. I use cmake. I get strange warning about XCB. It is strange for me because I disable XCB. Or not? See my picture from cmake GUI.

I get warning from cmake:
Checking dependencies of submodule 'qtbase'
Configuring submodule 'qtbase'
CMake Warning (dev) at qtbase/cmake/3rdparty/extra-cmake-modules/find-modules/FindXCB.cmake:180 (message):
XINPUT from XCB was requested: this is EXPERIMENTAL and is likely to
unavailable on many systems!