Me and 2 other people confirmed that if you configure Qt 5.14 with a single Android ABI target, then CMake Config files are not created for each module (like Core, Gui, etc), so qtbase/lib/cmake/Qt5Core/Qt5CoreConfig.cmake is missing.
It works fine if 2 abis are provided to configure.
It looks like mkspecs/features/create_cmake.prf is visited twice.
And on the second time build_pass == true, which means that QMAKE_SUBSTITUTES is not assigned and the files are not created.
I assume this has something to do with the multiple passes from the exclusive builds, but i don't know the details about how that works.