use std::{env, fs, path::PathBuf};

fn main() {
    // Copy memory.x somewhere the linker will find it. Relying on the linker's
    // working directory does not work in a workspace, where cargo runs rustc
    // from the workspace root rather than this package's directory.
    let out = PathBuf::from(env::var("OUT_DIR").expect("OUT_DIR"));
    fs::copy("memory.x", out.join("memory.x")).expect("copy memory.x into OUT_DIR");
    println!("cargo:rustc-link-search={}", out.display());

    // --nmagic disables page alignment of sections; without it the vector table
    // is pushed away from the start of flash and the boot ROM cannot find it.
    println!("cargo:rustc-link-arg-bins=--nmagic");
    println!("cargo:rustc-link-arg-bins=-Tlink.x");

    println!("cargo:rerun-if-changed=memory.x");
    println!("cargo:rerun-if-changed=build.rs");
}