fn main() {
println!("cargo:rerun-if-changed=build.rs");
#[cfg(target_arch = "x86_64")]
{
if std::env::var("CARGO_CFG_TARGET_FEATURE").map_or(false, |f| f.contains("avx2")) {
println!("cargo:rustc-cfg=has_avx2");
}
if std::env::var("CARGO_CFG_TARGET_FEATURE").map_or(false, |f| f.contains("avx512f")) {
println!("cargo:rustc-cfg=has_avx512");
}
}
}