Use RUSTC_LINKER's prefix as last resort for prefix_for_target(). #685
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thomcc
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Oct 26, 2022
| // Put aside RUSTC_LINKER's prefix to be used as last resort | ||
| let rustc_linker = self.getenv("RUSTC_LINKER").unwrap_or("".to_string()); | ||
| // let linker_prefix = rustc_linker.strip_suffix("-gcc"); // >=1.45.0 | ||
| let linker_prefix = if rustc_linker.len() > 4 { |
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I'd probably implement this as if rustc_linker.ends_with("-gcc") { ... }, but I don't really think this needs to be done here (I probably will be making a case for bumping cc-rs's MSRV in coherence with whatever we decide in rust-lang/libs-team#72, so I don't think this needs to be bad for that long).
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User-provided cross-linker is a working cross-compiler with a perfectly usable prefix. Usable in the prefix_for_target() context that is. One can wonder if it's possible to even remove the majority of the mapping table... (I write "majority" because *-windows-gnu [and no-std?] users are excused from configuring cross-linker.) Potentially fixes #666 and #637. [
Possibly even #654.To help #654 one would have to remove the musl mappings. So that the fallback is actually fallen on.]