Feature request: Files with GENERATED property set to ON should have their build tools built with host build system
Scenario: A cross compilation project has some files that are generated via a tool, which also is within the project. The generation is done via add_custom_command. It would be really neat if the CMake build system checks the dependencies of the tools to build them with the host default build system, rather than the C&CXX compiler setup with the toolchain file.