extern crate bindgen;
extern crate cc;

use std::env;
use std::path::PathBuf;

fn main() {
    // Tell cargo to invalidate the built crate whenever the wrapper changes
    println!("cargo:rerun-if-changed=src/external/bindings.h");

    // For Crane
    if env::var("LMOD_CMD").is_ok() {
        let mut ld_path = env::var("LD_LIBRARY_PATH").expect("???");
        ld_path.push_str(":/util/comp/clang/13/lib");
        env::set_var("LD_LIBRARY_PATH", ld_path);
    }

    // The bindgen::Builder is the main entry point
    // to bindgen, and lets you build up options for
    // the resulting bindings.
    let bindings = bindgen::Builder::default()
        .header("src/external/bindings.h")
        // Tell cargo to invalidate the built crate whenever any of the
        // included header files changed.
        .parse_callbacks(Box::new(bindgen::CargoCallbacks))
        // Finish the builder and generate the bindings.
        .generate()
        // Unwrap the Result and panic on failure.
        .expect("Unable to generate bindings");

    // Write the bindings to the $OUT_DIR/bindings.rs file.
    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
    bindings
        .write_to_file(out_path.join("bindings.rs"))
        .expect("Couldn't write bindings!");

    cc::Build::new()
        .file("src/external/faddeeva/Faddeeva.c")
        .compile("faddeeva");
}