mentat/build/version.rs

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// Copyright 2016 Mozilla
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the
// License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
extern crate rustc_version;
use std::io::{self, Write};
use std::process::exit;
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use rustc_version::{
Version,
version,
};
/// MIN_VERSION should be changed when there's a new minimum version of rustc required
/// to build the project.
static MIN_VERSION: &'static str = "1.25.0";
fn main() {
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let ver = version().unwrap();
let min = Version::parse(MIN_VERSION).unwrap();
if ver < min {
writeln!(&mut io::stderr(), "Mentat requires rustc {} or higher.", MIN_VERSION).unwrap();
exit(1);
}
}