ESP32-C3 Support

[mrchantey]

Has anybody had luck running this on the esp32-c3? It seems possible but I'm not getting very far. The two stumpers I'm getting are this one:

  process didn't exit successfully: `C:/temp/idf\debug\build\wasm3-sys-9e0a6fa44c575681\build-script-build` (exit code: 101)
  --- stderr
  error: unknown target triple 'riscv32imc-esp-espidf', please use -triple or -arch
  thread 'main' panicked at 'libclang error; possible causes include:
  - Invalid flag syntax
  - Unrecognized flags
  - Invalid flag arguments
  - File I/O errors
  - Host vs. target architecture mismatch
  If you encounter an error missing from this list, please file an issue or a PR!', C:\Users\me\.cargo\registry\src\github.com-1ecc6299db9ec823\bindgen-0.61.0\ir\context.rs:524:13

And this one:

error[E0425]: cannot find value `X_OK` in crate `libc`
   --> C:\Users\me\.cargo\registry\src\github.com-1ecc6299db9ec823\clang-sys-1.4.0\src\support.rs:163:51    
    |
163 |     unsafe { Ok(libc::access(path.as_ptr(), libc::X_OK) == 0) }
    |                                                   ^^^^ not found in `libc`

error: could not compile `clang-sys` due to previous error

Any pointers in the right direction would b greatly appreciated.

[mrchantey]

Ok the cannot find value X_OK in crate libc was my bad, I forgot to add to the top of my file: use esp_idf_sys as _; The other part I still have no idea about, but ive gotten wasmi going no problem so i guess ill just go with that.