use std::{
    io::{stderr, Write},
    path::PathBuf,
};

fn main() {
    println!("cargo:rustc-link-search=native=./build/gblibstdc++");
    println!("cargo:rustc-link-lib=static=gblibstdc++");

    let headers = ["rust-headers.hpp", "include/kernel/hw/pci.hpp"];

    let bindings = bindgen::Builder::default()
        .use_core()
        .ctypes_prefix("core::ffi")
        .headers(headers)
        .clang_arg("-I./gblibstdc++/include")
        .clang_arg("-I./gblibc/include")
        .clang_arg("-I./include")
        .clang_arg("-std=c++20")
        .opaque_type("std::.*")
        .enable_cxx_namespaces()
        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
        .generate()
        .expect("Unable to generate bindings");

    let out_path = PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap());
    let out = bindings.write_to_file(out_path.join("src/bindings.rs"));

    if let Err(err) = out {
        writeln!(
            stderr().lock(),
            "out_dir = {}",
            out_path.as_path().display()
        )
        .unwrap();
        Result::<(), _>::Err(err).expect("Couldn't write bindings!");
    }
}