Sha256: 3733c86ae2733629f873f93c2f45da30164beee8de9ee0833099fac6a05a3e6b
Contents?: true
Size: 961 Bytes
Versions: 8
Compression:
Stored size: 961 Bytes
Contents
use std::env;
use std::process::{self, Command};
use std::str;
fn main() {
println!("cargo:rerun-if-changed=build.rs");
let version = match rustc_version() {
Some(version) => version,
None => return,
};
if version.minor < 31 {
eprintln!("Minimum supported rustc version is 1.31");
process::exit(1);
}
if version.minor < 53 {
// https://github.com/rust-lang/rust/issues/43081
println!("cargo:rustc-cfg=needs_invalid_span_workaround");
}
}
struct RustcVersion {
minor: u32,
}
fn rustc_version() -> Option<RustcVersion> {
let rustc = env::var_os("RUSTC")?;
let output = Command::new(rustc).arg("--version").output().ok()?;
let version = str::from_utf8(&output.stdout).ok()?;
let mut pieces = version.split('.');
if pieces.next() != Some("rustc 1") {
return None;
}
let minor = pieces.next()?.parse().ok()?;
Some(RustcVersion { minor })
}
Version data entries
8 entries across 8 versions & 1 rubygems