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Ensure the rustc-codegen-cranelift-preview component is never empty

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Either generate it with the actual codegen backend dylib or omit it
entirely when the cranelift backend is disabled for this build.
This commit is contained in:
bjorn3 2023-10-28 19:11:51 +00:00
parent 794bf8a850
commit aefd7ace91
1 changed files with 7 additions and 0 deletions
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7
src/bootstrap/src/core/build_steps/dist.rs
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@ -1305,6 +1305,10 @@ fn run(self, builder: &Builder<'_>) -> Option<GeneratedTarball> {
return None;
}
if !builder.config.rust_codegen_backends.contains(&self.backend) {
return None;
}
if self.backend == "cranelift" {
if !target_supports_cranelift_backend(self.compiler.host) {
builder.info("target not supported by rustc_codegen_cranelift. skipping");
@ -1343,12 +1347,15 @@ fn run(self, builder: &Builder<'_>) -> Option<GeneratedTarball> {
let backends_dst = PathBuf::from("lib").join(&backends_rel);
let backend_name = format!("rustc_codegen_{}", backend);
let mut found_backend = false;
for backend in fs::read_dir(&backends_src).unwrap() {
let file_name = backend.unwrap().file_name();
if file_name.to_str().unwrap().contains(&backend_name) {
tarball.add_file(backends_src.join(file_name), &backends_dst, 0o644);
found_backend = true;
}
}
assert!(found_backend);
Some(tarball.generate())
}