// The rustc-cfg listed below are considered public API, but it is *unstable*
// and outside of the normal semver guarantees:
//
// - `futures_no_atomic_cas`
// Assume the target does *not* support atomic CAS operations.
// This is usually detected automatically by the build script, but you may
// need to enable it manually when building for custom targets or using
// non-cargo build systems that don't run the build script.
//
// With the exceptions mentioned above, the rustc-cfg emitted by the build
// script are *not* public API.
use env;
include!;