Rollup merge of #142000 - lambdageek:no-symlink-stage0, r=onur-ozkan

bootstrap: don't symlink source dir into stage0 sysroot

In StdLink::run we subsequently recursively copy the initial sysroot lib directory into the stage0-sysroot lib directory.  If the initial sysroot is a toolchain that includes the `rust-src` component (in lib/rustlib/src/rust), if we add this symlink, that recursive copy will overwrite the repo sources with the toolchain's sources.

Fixes https://github.com/rust-lang/rust/issues/141991
This commit is contained in:
Matthias Krüger
2025-06-04 07:54:36 +02:00
committed by GitHub
+17 -13
View File
@@ -1878,23 +1878,27 @@ fn run(self, builder: &Builder<'_>) -> PathBuf {
// so that any tools relying on `rust-src` also work for local builds,
// and also for translating the virtual `/rustc/$hash` back to the real
// directory (for running tests with `rust.remap-debuginfo = true`).
let sysroot_lib_rustlib_src = sysroot.join("lib/rustlib/src");
t!(fs::create_dir_all(&sysroot_lib_rustlib_src));
let sysroot_lib_rustlib_src_rust = sysroot_lib_rustlib_src.join("rust");
if let Err(e) = symlink_dir(&builder.config, &builder.src, &sysroot_lib_rustlib_src_rust) {
eprintln!(
"ERROR: creating symbolic link `{}` to `{}` failed with {}",
sysroot_lib_rustlib_src_rust.display(),
builder.src.display(),
e,
);
if builder.config.rust_remap_debuginfo {
if compiler.stage != 0 {
let sysroot_lib_rustlib_src = sysroot.join("lib/rustlib/src");
t!(fs::create_dir_all(&sysroot_lib_rustlib_src));
let sysroot_lib_rustlib_src_rust = sysroot_lib_rustlib_src.join("rust");
if let Err(e) =
symlink_dir(&builder.config, &builder.src, &sysroot_lib_rustlib_src_rust)
{
eprintln!(
"ERROR: some `tests/ui` tests will fail when lacking `{}`",
"ERROR: creating symbolic link `{}` to `{}` failed with {}",
sysroot_lib_rustlib_src_rust.display(),
builder.src.display(),
e,
);
if builder.config.rust_remap_debuginfo {
eprintln!(
"ERROR: some `tests/ui` tests will fail when lacking `{}`",
sysroot_lib_rustlib_src_rust.display(),
);
}
build_helper::exit!(1);
}
build_helper::exit!(1);
}
// rustc-src component is already part of CI rustc's sysroot