* hmm I specified this target in the .config/.cargo and I wrote this for bindgen 
```rs
        let bindings = bindgen::Builder::default()
        .header(headers.join("acc\_config.h").to\_str().unwrap())
        .header(headers.join("acc\_definitions\_a121.h").to\_str().unwrap())
        .clang\_arg("--target=arm-none-eabi")
        .clang\_arg(format!("-I{}", armpath.join("arm-none-eabi/include").display()))
        .generate();
```