1) A successful cross-build of qtbase modules.
2) Figuring out the best way of specifying which host build tools should be used.
Currently done by specifying
Ideally when building the host build, we would export a per-module config file, e.g. Qt5CoreTools. See
Then we specify a CMAKE_PREFIX_PATH and run find_package(Qt5CoreTools), and the qtbase CMakeLists.txt would automatically pick up and use the pre-built tools for the cross build.
Easiest would probably be a host Linux to ARM target build.