"Cannot compile. No backend feature selected." error when running the examples

[Loïc Damien]

I followed the book and when I reached the examples chapters I encountered the following error which come from the end of rtic-macros/src/lib.rs:
Cannot compile. No backend feature selected

I was able to make it compile with the following command:

cargo run -F thumbv7-backend --target thumbv7m-none-eabi --example locals

I don't know if this is the correct way, and if it is, it should be documented in the book.

(Thanks for the work on RTIC. I really like what I see for the moment)

[Henrik Tjäder]

This should have been resolved in #912 :) Thank you for reporting and happy hacking!