use std::{env, fs::File, io::Write, path::PathBuf};

fn main() {
    let out = PathBuf::from(env::var_os("OUT_DIR").unwrap());
    File::create(out.join("memory.x"))
        .unwrap()
        .write_all(include_bytes!("memory.x"))
        .unwrap();
    println!("cargo:rustc-link-search={}", out.display());
    println!("cargo:rerun-if-changed=memory.x");
    println!("cargo:rerun-if-changed=build.rs");

    // defmt ships its own linker script (`defmt.x`) that defines the
    // `_defmt_*` interner sections. Only link it when the feature is on —
    // otherwise the symbols don't exist and `ld` will refuse the build.
    if env::var_os("CARGO_FEATURE_DEFMT").is_some() {
        println!("cargo:rustc-link-arg=-Tdefmt.x");
    }
}