87 lines
3.0 KiB
Rust
87 lines
3.0 KiB
Rust
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//! This tiny build script ensures that the crate is not compiled with an
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//! incompatible version of rust.
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//! This scipt was stolen from `rocket_codegen`.
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extern crate ansi_term;
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extern crate version_check;
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use ansi_term::Color::{Red, Yellow, Blue, White};
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use version_check::{is_nightly, is_min_version, is_min_date};
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// Specifies the minimum nightly version that is targetted
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// Note that sometimes the `rustc` date might be older than the nightly version,
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// usually one day older
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const MIN_DATE: &'static str = "2017-07-12";
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const MIN_VERSION: &'static str = "1.20.0-nightly";
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// Convenience macro for writing to stderr.
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macro_rules! printerr {
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($($arg:tt)*) => ({
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use std::io::prelude::*;
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write!(&mut ::std::io::stderr(), "{}\n", format_args!($($arg)*))
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.expect("Failed to write to stderr.")
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})
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}
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fn main() {
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let ok_nightly = is_nightly();
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let ok_version = is_min_version(MIN_VERSION);
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let ok_date = is_min_date(MIN_DATE);
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let print_version_err = |version: &str, date: &str| {
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printerr!(
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"{} {}. {} {}.",
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White.paint("Installed version is:"),
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Yellow.paint(format!("{} ({})", version, date)),
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White.paint("Minimum required:"),
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Yellow.paint(format!("{} ({})", MIN_VERSION, MIN_DATE))
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);
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};
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match (ok_nightly, ok_version, ok_date) {
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(Some(is_nightly), Some((ok_version, version)), Some((ok_date, date))) => {
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if !is_nightly {
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printerr!(
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"{} {}",
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Red.bold().paint("Error:"),
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White.paint("rowdy requires a nightly version of Rust.")
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);
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print_version_err(&*version, &*date);
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printerr!(
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"{}{}{}",
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Blue.paint("See the README ("),
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White.paint("https://github.com/lawliet89/rowdy"),
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Blue.paint(") for more information.")
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);
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panic!("Aborting compilation due to incompatible compiler.")
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}
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if !ok_version || !ok_date {
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printerr!(
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"{} {}",
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Red.bold().paint("Error:"),
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White.paint("rowdy requires a more recent version of rustc.")
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);
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printerr!(
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"{}{}{}",
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Blue.paint("Use `"),
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White.paint("rustup update"),
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Blue.paint("` or your preferred method to update Rust.")
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);
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print_version_err(&*version, &*date);
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panic!("Aborting compilation due to incompatible compiler.")
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}
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}
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_ => {
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println!(
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"cargo:warning={}",
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"rowdy was unable to check rustc compatibility."
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);
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println!(
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"cargo:warning={}",
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"Build may fail due to incompatible rustc version."
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);
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}
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}
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}
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