ark-ff 0.2.0

extern crate rustc_version;
use rustc_version::{version_meta, Channel};

fn main() {
    println!("cargo:rerun-if-changed=build.rs");

    let is_nightly = version_meta().expect("nightly check failed").channel == Channel::Nightly;

    let should_use_asm = cfg!(all(
        feature = "asm",
        target_feature = "bmi2",
        target_feature = "adx",
        target_arch = "x86_64"
    )) && is_nightly;
    if should_use_asm {
        println!("cargo:rustc-cfg=use_asm");
    }
}