third_party/rust_crates/vendor/crossbeam-utils/build.rs

extern crate autocfg;

fn main() {
    let cfg = autocfg::new();
    if cfg.probe_rustc_version(1, 31) {
        autocfg::emit("has_min_const_fn");
    }

    cfg.emit_type_cfg("core::sync::atomic::AtomicU8", "has_atomic_u8");
    cfg.emit_type_cfg("core::sync::atomic::AtomicU16", "has_atomic_u16");
    cfg.emit_type_cfg("core::sync::atomic::AtomicU32", "has_atomic_u32");
    cfg.emit_type_cfg("core::sync::atomic::AtomicU64", "has_atomic_u64");
    cfg.emit_type_cfg("core::sync::atomic::AtomicU128", "has_atomic_u128");
}