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Clean up dep-info files from OUT_DIR

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David Tolnay 2024-10-22 10:46:24 -07:00
parent a72ea77c45
commit f563b1dc76
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GPG key ID: F9BA143B95FF6D82
1 changed files with 24 additions and 2 deletions
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26
build.rs
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@ -1,5 +1,7 @@
use std::env;
use std::ffi::OsString;
use std::fs;
use std::io::ErrorKind;
use std::iter;
use std::path::Path;
use std::process::{self, Command, Stdio};
@ -68,8 +70,16 @@ fn compile_probe(rustc_bootstrap: bool) -> bool {
let rustc = cargo_env_var("RUSTC");
let out_dir = cargo_env_var("OUT_DIR");
let out_subdir = Path::new(&out_dir).join("probe");
let probefile = Path::new("build").join("probe.rs");
if let Err(err) = fs::create_dir(&out_subdir) {
if err.kind() != ErrorKind::AlreadyExists {
eprintln!("Failed to create {}: {}", out_subdir.display(), err);
process::exit(1);
}
}
let rustc_wrapper = env::var_os("RUSTC_WRAPPER").filter(|wrapper| !wrapper.is_empty());
let rustc_workspace_wrapper =
env::var_os("RUSTC_WORKSPACE_WRAPPER").filter(|wrapper| !wrapper.is_empty());
@ -91,7 +101,7 @@ fn compile_probe(rustc_bootstrap: bool) -> bool {
.arg("--cap-lints=allow")
.arg("--emit=dep-info,metadata")
.arg("--out-dir")
.arg(out_dir)
.arg(&out_subdir)
.arg(probefile);
if let Some(target) = env::var_os("TARGET") {
@ -107,12 +117,24 @@ fn compile_probe(rustc_bootstrap: bool) -> bool {
}
}
match cmd.status() {
let success = match cmd.status() {
Ok(status) => status.success(),
Err(_) => false,
};
// Clean up to avoid leaving nondeterministic absolute paths in the dep-info
// file in OUT_DIR, which causes nonreproducible builds in build systems
// that treat the entire OUT_DIR as an artifact.
if let Err(err) = fs::remove_dir_all(&out_subdir) {
if err.kind() != ErrorKind::NotFound {
eprintln!("Failed to clean up {}: {}", out_subdir.display(), err);
process::exit(1);
}
}
success
}
fn cargo_env_var(key: &str) -> OsString {
env::var_os(key).unwrap_or_else(|| {
eprintln!(