mirror of https://github.com/rwf2/Rocket.git
68 lines
2.7 KiB
Rust
68 lines
2.7 KiB
Rust
//! This tiny build script ensures that rocket_codegen is not compiled with an
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//! incompatible version of rust.
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extern crate yansi;
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extern crate version_check;
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use yansi::Color::{Red, Yellow, Blue, White};
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use version_check::{supports_features, is_min_version, is_min_date};
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// Specifies the minimum nightly version needed to compile Rocket's codegen.
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const MIN_DATE: &'static str = "2017-06-19";
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const MIN_VERSION: &'static str = "1.19.0-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_channel = supports_features();
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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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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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match (ok_channel, ok_version, ok_date) {
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(Some(ok_channel), Some((ok_version, version)), Some((ok_date, date))) => {
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if !ok_channel {
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printerr!("{} {}",
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Red.paint("Error:").bold(),
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White.paint("Rocket requires a nightly or dev version of Rust."));
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print_version_err(&*version, &*date);
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printerr!("{}{}{}",
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Blue.paint("See the getting started guide ("),
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White.paint("https://rocket.rs/guide/getting-started/"),
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Blue.paint(") for more information."));
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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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Red.paint("Error:").bold(),
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White.paint("Rocket codegen requires a more recent version of rustc."));
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printerr!("{}{}{}",
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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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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!("cargo:warning={}", "Rocket was unable to check rustc compatibility.");
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println!("cargo:warning={}", "Build may fail due to incompatible rustc version.");
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}
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}
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}
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