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Set the rustc lib path for unstable-book-gen #159613

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Merged
rust-bors merged 1 commit into from
Jul 21, 2026
Merged

Set the rustc lib path for unstable-book-gen #159613

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4 changes: 4 additions & 0 deletions src/bootstrap/src/core/build_steps/doc.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1319,6 +1319,10 @@ impl Step for UnstableBookGen {
cmd.arg(rustc_path);
cmd.arg(out);

// Running rustc requires the library path if rust.rpath = false
// or any other libraries are in a custom location.
builder.add_rustc_lib_path(self.build_compiler, &mut cmd);

cmd.run(builder);
}
}
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1 change: 1 addition & 0 deletions src/tools/unstable-book-gen/src/main.rs
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Expand Up @@ -128,6 +128,7 @@ fn collect_compiler_flags(rustc_path: impl AsRef<Path>) -> Features {
rustc.env("RUSTC_BOOTSTRAP", "1");
rustc.arg("-Zhelp");
let output = t!(rustc.output());
assert!(output.status.success(), "`rustc -Zhelp` failed: {output:?}");
let help_str = t!(String::from_utf8(output.stdout));
let parts = help_str.split("\n -Z").collect::<Vec<_>>();
assert!(!parts[1..].is_empty(), "no -Z options were found");
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