Sha256: e1f79dc7a4f6507a5834fd0124a08eb7f90b700b2f4c0225eb1086eb9b8591d1
Contents?: true
Size: 817 Bytes
Versions: 28
Compression:
Stored size: 817 Bytes
Contents
use std::env;
use std::process::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 < 54 {
// https://github.com/rust-lang/rust/pull/84717
println!("cargo:rustc-cfg=no_literal_fromstr");
}
}
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
28 entries across 28 versions & 1 rubygems