extern crate bindgen;

use {
    bindgen::{
        Builder,
        CargoCallbacks,
        MacroTypeVariation,
    },
    std::{
        env,
        path::PathBuf,
    },
};

fn main() {
    println!("cargo:rerun-if-changed=wrapper.h");

    let bindings = Builder::default()
        .header("wrapper.h")
        .parse_callbacks(Box::new(CargoCallbacks))
        .default_macro_constant_type(MacroTypeVariation::Signed)
        .generate()
        .expect("Unable to generate bindings");

    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
    bindings
        .write_to_file(out_path.join("bindings.rs"))
        .expect("Couldn't write bindings!");
}