use std::{env, fs, path::PathBuf};
fn main() {
    let root = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap())
        .parent()
        .unwrap()
        .to_path_buf();
    let base = root.join("os-runqueue/src/runqueue.rs");
    let extension = root.join("scripts/os-acceptance/k1060-runqueue-handoff.rs");
    println!("cargo:rerun-if-changed={}", base.display());
    println!("cargo:rerun-if-changed={}", extension.display());
    let mut bytes = fs::read(&base).unwrap();
    bytes.extend_from_slice(b"\n");
    bytes.extend_from_slice(&fs::read(&extension).unwrap());
    let out = PathBuf::from(env::var("OUT_DIR").unwrap());
    let module = out.join("runqueue.rs");
    fs::write(&module, bytes).unwrap();
    fs::write(
        out.join("module.rs"),
        format!(
            "#[path = {:?}] pub mod runqueue;\n",
            module.to_str().unwrap()
        ),
    )
    .unwrap();
}