Auto merge of #9745 - matttpt:fix-redundant-closure-for-method-calls-suggestion,...

[rust.git] / build.rs

diff --git a/build.rs b/build.rs
index c13eed1f58559176cda4b0e095239873749c289d..b5484bec3c8b8dca5dc0a00930d846e60533d4a7 100644 (file)
--- a/build.rs
+++ b/build.rs
@@ -1,99 +1,19 @@
-//! This build script ensures that clippy is not compiled with an
-//! incompatible version of rust. It will panic with a descriptive
-//! error message instead.
-//!
-//! We specifially want to ensure that clippy is only built with a
-//! rustc version that is newer or equal to the one specified in the
-//! `min_version.txt` file.
-//!
-//! `min_version.txt` is in the repo but also in the `.gitignore` to
-//! make sure that it is not updated manually by accident. Only CI
-//! should update that file.
-//!
-//! This build script was originally taken from the Rocket web framework:
-//! https://github.com/SergioBenitez/Rocket
-
-extern crate rustc_version;
-extern crate ansi_term;
-
-use std::env;
-use rustc_version::{version_meta, version_meta_for, Channel, Version, VersionMeta};
-use ansi_term::Colour::Red;
-
 fn main() {
-    let string = include_str!("min_version.txt");
-    let min_version_meta = version_meta_for(string)
-        .expect("Could not parse version string in min_version.txt");
-    let current_version_meta = version_meta()
-        .expect("Could not retrieve current rustc version information from ENV");
-
-    let min_version = min_version_meta.clone().semver;
-    let min_date_str = min_version_meta.clone().commit_date
-        .expect("min_version.txt does not contain a rustc commit date");
-
-    let current_version = current_version_meta.clone().semver;
-    let current_date_str = current_version_meta.clone().commit_date
-        .expect("current rustc version information does not contain a rustc commit date");
-
-    let print_version_err = |version: &Version, date: &str| {
-        eprintln!("> {} {}. {} {}.\n",
-                  "Installed rustc version is:",
-                  format!("{} ({})", version, date),
-                  "Minimum required rustc version:",
-                  format!("{} ({})", min_version, min_date_str));
-    };
-
-    if !correct_channel(&current_version_meta) {
-        eprintln!("\n{} {}",
-                  Red.bold().paint("error:"),
-                  "clippy requires a nightly version of Rust.");
-        print_version_err(&current_version, &*current_date_str);
-        eprintln!("{}{}{}",
-                  "See the README (",
-                  "https://github.com/rust-lang-nursery/rust-clippy#usage",
-                  ") for more information.");
-        panic!("Aborting compilation due to incompatible compiler.")
-    }
-
-    let current_date = str_to_ymd(&current_date_str).unwrap();
-    let min_date = str_to_ymd(&min_date_str).unwrap();
-
-    if current_date < min_date {
-        eprintln!("\n{} {}",
-                  Red.bold().paint("error:"),
-                  "clippy does not support this version of rustc nightly.");
-        eprintln!("> {}{}{}",
-                  "Use `",
-                  "rustup update",
-                  "` or your preferred method to update Rust.");
-        print_version_err(&current_version, &*current_date_str);
-        panic!("Aborting compilation due to incompatible compiler.")
-    }
-
     // Forward the profile to the main compilation
-    println!("cargo:rustc-env=PROFILE={}", env::var("PROFILE").unwrap());
+    println!("cargo:rustc-env=PROFILE={}", std::env::var("PROFILE").unwrap());
     // Don't rebuild even if nothing changed
     println!("cargo:rerun-if-changed=build.rs");
-}
-
-fn correct_channel(version_meta: &VersionMeta) -> bool {
-    match version_meta.channel {
-        Channel::Stable | Channel::Beta => {
-            false
-        },
-        Channel::Nightly | Channel::Dev => {
-            true
-        }
-    }
-}
-
-/// Convert a string of %Y-%m-%d to a single u32 maintaining ordering.
-fn str_to_ymd(ymd: &str) -> Option<u32> {
-    let ymd: Vec<u32> = ymd.split("-").filter_map(|s| s.parse::<u32>().ok()).collect();
-    if ymd.len() != 3 {
-        return None
-    }
-
-    let (y, m, d) = (ymd[0], ymd[1], ymd[2]);
-    Some((y << 9) | (m << 5) | d)
+    // forward git repo hashes we build at
+    println!(
+        "cargo:rustc-env=GIT_HASH={}",
+        rustc_tools_util::get_commit_hash().unwrap_or_default()
+    );
+    println!(
+        "cargo:rustc-env=COMMIT_DATE={}",
+        rustc_tools_util::get_commit_date().unwrap_or_default()
+    );
+    println!(
+        "cargo:rustc-env=RUSTC_RELEASE_CHANNEL={}",
+        rustc_tools_util::get_channel()
+    );
 }