I've just created another release of my bleeding-edge-toolchain script, which builds a complete toolchain for ARM microcontrollers. This toolchain uses the most recent versions of all possible components:
The script itself and precompiled packages for 32-bit and 64-bit Windows are available on http://www.freddiechopin.info/ > Download > Software > bleeding-edge-toolchain. You can also find the script on github https://github.com/FreddieChopin/bleeding-edge-toolchain/releases/tag/190503
Ok, I will give it a try next week.