mikros/rust
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Replace any existing build/host symlink

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This has two advantages:
1. If `build.build` changes between runs, the symlink is no longer
   silently wrong.
2. If the entire build directory is moved, the symlink is no longer
   broken because it points to the wrong absolute path.
This commit is contained in:
Jynn Nelson 2023-03-31 07:15:42 -04:00 committed by Joshua Nelson
parent eb3e9c1f45
commit 28b7e6abff
1 changed files with 11 additions and 10 deletions
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21
src/bootstrap/lib.rs
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@ -21,7 +21,6 @@ use std::collections::{HashMap, HashSet};
use std::env;
use std::fs::{self, File};
use std::io;
use std::io::ErrorKind;
use std::path::{Path, PathBuf};
use std::process::{Command, Stdio};
use std::str;
@ -505,16 +504,18 @@ impl Build {
let build_triple = build.out.join(&build.build.triple);
t!(fs::create_dir_all(&build_triple));
let host = build.out.join("host");
if let Err(e) = symlink_dir(&build.config, &build_triple, &host) {
if e.kind() != ErrorKind::AlreadyExists {
panic!(
"symlink_dir({} => {}) failed with {}",
host.display(),
build_triple.display(),
e
);
}
if host.is_symlink() {
// Left over from a previous build; overwrite it.
// This matters if `build.build` has changed between invocations.
#[cfg(windows)]
t!(fs::remove_dir(&host));
#[cfg(not(windows))]
t!(fs::remove_file(&host));
}
t!(
symlink_dir(&build.config, &build_triple, &host),
format!("symlink_dir({} => {}) failed", host.display(), build_triple.display())
);
build
}