cl : Command line error D8021 : invalid numeric argument ‘/Wno-expansion-to-defined’

[Shawn Hymel]

From https://forum.edgeimpulse.com/t/voice-activated-micro-bit-with-machine-learning/4290

The test repo did not work for me.
i got this error message when running
python build.py:
cl : Command line error D8021 : invalid numeric argument ‘/Wno-expansion-to-defined’
ninja: build stopped: subcommand failed.

using windows.

[Shawn Hymel]

I am unable to replicate