I am not sure which firmware compilation is required for each flight controller, or which firmware compilation relates to which flight controller. Is there a table somewhere?
Is there a handy table somewhere that shows the following relationships:
Px4FMUv1 => FMUv1 compilation
Pixhawk => FMUv2 compilation
Pixhawk 2 => FMUv3 compilation
Pixracer => ??? compilation
Pixfalcon => ??? compilation
Pixhawk 3 Pro => ??? compilation
Perhaps on each of the flight controller pages on px4.io it should give the build instruction like what is done for the Pixhawk2 (https://dev.px4.io/en/flight_controller/pixhawk-2.html).