forked from abdul124/rust-core_io
Allow specifying a specific std version (by commit hash) in an environment variable
This commit is contained in:
parent
359fdcb5e4
commit
3ad99dcdae
12
build.rs
12
build.rs
@ -36,10 +36,16 @@ impl Sub<Mapping> for Vec<Mapping> {
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let mappings=include!("mapping.rs");
|
||||
let io_commit=match env::var("CORE_IO_COMMIT") {
|
||||
Ok(c) => c,
|
||||
Err(env::VarError::NotUnicode(_)) => panic!("Invalid commit specified in CORE_IO_COMMIT"),
|
||||
Err(env::VarError::NotPresent) => {
|
||||
let mappings=include!("mapping.rs");
|
||||
|
||||
let compiler=rustc_version::version_meta().commit_hash.expect("Couldn't determine compiler version");
|
||||
let io_commit=mappings.iter().find(|&&Mapping(elem,_)|elem==compiler).expect("Unknown compiler version, upgrade core_io?").1;
|
||||
let compiler=rustc_version::version_meta().commit_hash.expect("Couldn't determine compiler version");
|
||||
mappings.iter().find(|&&Mapping(elem,_)|elem==compiler).expect("Unknown compiler version, upgrade core_io?").1.to_owned()
|
||||
}
|
||||
};
|
||||
|
||||
let mut dest_path=PathBuf::from(env::var_os("OUT_DIR").unwrap());
|
||||
dest_path.push("io.rs");
|
||||
|
Loading…
Reference in New Issue
Block a user