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rust/compiler/rustc_codegen_ssa
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Matthias Krüger 748647f8b8
Rollup merge of #125417 - lqd:lld-retry, r=petrochenkov 
self-contained linker: retry linking without `-fuse-ld=lld` on CCs that don't support it

For the self-contained linker, this PR applies [the strategy](https://github.com/rust-lang/rust/issues/125330#issuecomment-2125119838) of retrying the linking step when the driver doesn't support `-fuse-ld=lld`, but with the option removed. This is the same strategy we already use of retrying when e.g. `-no-pie` is not supported.

Fixes #125330
r? `@petrochenkov`

I have no idea how we could add a test here, much like we don't have one for `-no-pie` or `-static-pie` -- let me know if you have ideas -- but I tested on a CentOS7 image:

```console
[root@d25b38376ede tmp]# ../build/host/stage1/bin/rustc helloworld.rs
 WARN rustc_codegen_ssa:🔙:link The linker driver does not support `-fuse-ld=lld`. Retrying without it.

[root@d25b38376ede tmp]# readelf -p .comment helloworld

String dump of section '.comment':
  [     0]  GCC: (GNU) 4.8.5 20150623 (Red Hat 4.8.5-44)
  [    2d]  rustc version 1.80.0-dev
```

I wasn't able to test with `cross` as the issue describes: I wasn't able to reproduce that behavior locally.
2024-05-23 07:41:19 +02:00
..
src Rollup merge of #125417 - lqd:lld-retry, r=petrochenkov 2024-05-23 07:41:19 +02:00
Cargo.toml Make SSA aggregates without needing an alloca 2024-05-08 20:38:04 -07:00
messages.ftl Handle calls to upstream monomorphizations in compiler_builtins 2024-03-16 15:22:05 -04:00
README.md

README.md

Please read the rustc-dev-guide chapter on Backend Agnostic Codegen.