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bootstrap: don't symlink source dir into stage0 sysroot #142000

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merged 1 commit into from
Jun 4, 2025
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bootstrap: don't symlink source dir into stage0 sysroot #142000

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30 changes: 17 additions & 13 deletions src/bootstrap/src/core/build_steps/compile.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1878,23 +1878,27 @@ impl Step for Sysroot {
// 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 {
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This should have some sort of FIXME comment... the hack should probably be removed once stage 0 has been cleaned up. Right now, something odd is happening where stage 0 doesn't refer to the downloaded beta compiler any more, or so?

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Yes, we should get rid of that (#142052), I have a WIP branch, will try to get it out in the upcoming days.

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
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