fn main() {
println!("cargo:rerun-if-changed=build.rs");
if std::env::var("CARGO_CFG_TARGET_ARCH").unwrap_or(String::new()) == "aarch64" {
match autocfg::AutoCfg::new() {
// From 1.61 aarch64 intrinsics and #[target_feature]
Ok(ac) => if ac.probe_rustc_version(1, 61) {
println!("cargo:rustc-cfg=has_aarch64_simd");
}
Err(err) => println!("cargo:warning={}", err),
}
}
}