63 lines
2.0 KiB
Rust
63 lines
2.0 KiB
Rust
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
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// This file is part of Parity Ethereum.
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// Parity Ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity Ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
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extern crate rustc_version;
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extern crate toml;
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extern crate vergen;
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use std::env;
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use std::fs::File;
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use std::io::Write;
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use std::path::Path;
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use vergen::{ConstantsFlags, generate_cargo_keys};
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const ERROR_MSG: &'static str = "Failed to generate metadata files";
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fn main() {
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let vergen_flags = ConstantsFlags::COMMIT_DATE |
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ConstantsFlags::SHA |
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ConstantsFlags::SHA_SHORT |
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ConstantsFlags::TARGET_TRIPLE |
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ConstantsFlags::REBUILD_ON_HEAD_CHANGE;
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generate_cargo_keys(vergen_flags).expect(ERROR_MSG);
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let version = rustc_version::version().expect(ERROR_MSG);
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let cargo: toml::Value = toml::from_str(include_str!("./Cargo.toml")).expect(ERROR_MSG);
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let track = cargo["package"]["metadata"]["track"].as_str().expect("'track' has to be a string!");
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create_file("meta.rs", format!("
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/// This versions track.
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#[allow(unused)]
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pub const TRACK: &str = {track:?};
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/// Returns compiler version.
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pub fn rustc_version() -> &'static str {{
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\"{version}\"
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}}
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",
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track = track,
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version = version,
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));
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}
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fn create_file(filename: &str, data: String) {
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let out_dir = env::var("OUT_DIR").expect(ERROR_MSG);
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let dest_path = Path::new(&out_dir).join(filename);
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let mut f = File::create(&dest_path).expect(ERROR_MSG);
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f.write_all(data.as_bytes()).expect(ERROR_MSG);
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}
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