1  // Copyright (c) 2019-2025 Alpha-Delta Network Inc.
 2  // This file is part of the alphavm library.
 3  
 4  // Licensed under the Apache License, Version 2.0 (the "License");
 5  // you may not use this file except in compliance with the License.
 6  // You may obtain a copy of the License at:
 7  
 8  // http://www.apache.org/licenses/LICENSE-2.0
 9  
10  // Unless required by applicable law or agreed to in writing, software
11  // distributed under the License is distributed on an "AS IS" BASIS,
12  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  // See the License for the specific language governing permissions and
14  // limitations under the License.
15  
16  // Detect the rustc channel
17  use rustc_version::{Channel, version_meta};
18  
19  fn main() {
20      // Set cfg flags depending on release channel
21      match version_meta().unwrap().channel {
22          Channel::Stable => println!("cargo:rustc-cfg=stable"),
23          Channel::Beta => println!("cargo:rustc-cfg=beta"),
24          Channel::Nightly => println!("cargo:rustc-cfg=nightly"),
25          Channel::Dev => println!("cargo:rustc-cfg=rustc_dev"),
26      }
27  }