Musl linker regression: undefined reference to X #61328
Labels
A-linkage
Area: linking into static, shared libraries and binaries
C-bug
Category: This is a bug.
O-musl
Target: The musl libc
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
Comments
Centril
added
O-musl
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I have this issue too - I believe the issue is that |
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Ah, that will be it! The breakage is due to changes in the grouping rules in PR #55659 |
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Another casualty of rustc's bundling behaviour... |
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Is there a workaround for this? I guess manually build |
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My 'workaround' is to use the last working version, |
6 tasks
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Note that this is affecting native aarch64 compilation on Alpine: |
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Unsure if this is a duplicate issue, so I'll post it here: cc: @Nilstrieb (talked about it on discord) I tried this code: (host: # .cargo/config.coml
[build]
target = "x86_64-unknown-linux-musl"
[target.x86_64-unknown-linux-musl]
rustflags = ["-C", "target-feature=-crt-static"]// main.rs
fn main() {
println!("{}", std::hint::black_box(45.0f64).exp());
}
I expected to see this happen: Compiles, prints a large number, and exits successfully. Instead, this happened: A linker error: The error only happens with Full `cargo b` outputMeta
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... where X is things like 'printf', i.e. symbols that clearly should exist.
This looks similar to other reported bugs, particularly #58163, but this one a) used to work until Rust 1.32 and b) is not embedded/no-std.
Using my
nloptlibrary to reproduce. You will needmuslinstalled. I am running linux/ubuntu 18.04. Disclaimer: I am no expert and I may have completely messed up how linking etc is supposed to be done.It works on this nightly:
But barfs on the next nightly:
with the following:
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