use std::env;
use std::path::Path;

#[cfg(all(target_os = "linux",target_arch = "x86_64"))]
fn main() {
    println!("cargo:rerun-if-changed=build.rs");
    let lib_path = std::fs::canonicalize("./lib").unwrap();
    println!("cargo:rustc-link-search={}", lib_path.to_str().unwrap());
    println!("cargo:rustc-link-lib=uring-ffi-naiveuring-prebuild");

    let bindings = bindgen::builder()
        .header("include/liburing.h")
        .allowlist_function("io_uring_queue_init")
        .allowlist_function("io_uring_queue_exit")
        .allowlist_function("io_uring_get_sqe")
        .allowlist_function("io_uring_prep_read")
        .allowlist_function("io_uring_prep_write")
        .allowlist_function("io_uring_sqe_set_data")
        .allowlist_function("io_uring_submit")
        .allowlist_function("io_uring_wait_cqe")
        .allowlist_function("io_uring_cqe_seen")
        .allowlist_function("io_uring_major_version")
        .allowlist_function("io_uring_minor_version")
        .generate()
        .unwrap();
    let out_dir = env::var_os("OUT_DIR").unwrap();
    let out_path = Path::new(&out_dir).join("bindings.rs");
    bindings.write_to_file(out_path).unwrap();
}

#[cfg(not(all(target_os = "linux",target_arch = "x86_64")))]
fn main() {
    panic!("platform not supported!");
}