[jononor]

The Xtensa based ESP32 chips have upstream support in GCC, do they not?

[phoehne]

Espressif has compilers you can download. GCC may work fine, but I’d use their compilers.

[brocklobsta]

Yes, but not llvm support. Which makes rust a no go.

[steveklabnik]

Upstream support landed a couple of weeks ago: https://github.com/llvm/llvm-project/search?o=desc&p=1&q=Xte...

Rust support landed before that, https://github.com/esp-rs

This is all being done by Xtensa themselves, including the Rust.