fn main() {
    // RFC 019 §7 test canary (agreed Q3): compiled without stack-clash
    // protection so its 96 KiB local is a genuine one-displacement guard
    // jumper; distro-hardened compilers would otherwise probe it page-wise
    // and defeat the test's purpose.
    cc::Build::new()
        .file("canary/canary.c")
        .flag_if_supported("-fno-stack-clash-protection")
        .compile("smarm_canary");
    println!("cargo:rerun-if-changed=canary/canary.c");
}