tweaks for building from scratch
trying to get 4.2.f and 5.0.a working by parameters
trying to get 4.2.f and 5.0.a working by parameters
trying to get 4.2.f and 5.0.a working by parameters
trying to get 4.2.f and 5.0.a working by parameters
optionally start 5.0.a instead of 4.2.f