Hello,

I have follow the book, at the moment I have created a json for Atmega1284p but during the compilation I have this error:

"LLVM ERROR: Expected a constant shift ammount!"
"error: could not compile 'core' (lib)"

This is my code:

`#![no_std]
#![no_main]

#[no_mangle]
pub extern fn main() {

}`

I have searched a lot for this problem, but I have found nothing about that...
Please could you help me??

Thanks

Simeon