Ardusub Custom Configuration

@tony-white I’ve been trying to configure Ardupilot manually using ./waf following these guides:
https://ardupilot.org/dev/docs/building-setup-mac.html
and

I think there is a bug for the navigator flight controller when choosing the navigator board type which stops the configuration. My screenshot below shows I can configure other board.
image

“./waf configure --board ADD_FC_BOARD_HERE” works for the other boards not problem, but the navigator does not work.

It gives me this error when trying to use “navigator”:
Checking for ‘g++’ (C++ compiler) : not found
Checking for ‘clang++’ (C++ compiler) : not found
could not configure a C++ compiler!
(complete log in /Users/MyFolder/ardupilot/build/config.log)

There is no problem with the C++ compiler with the other boards.

@jwalser Is this something you would be able help with?
I saw you helped with a similar issue here.