Fails to build on linux-musl-aarch64

[michalszmidt]

There is another thread of this issue here: rust-lang/rustup#3324
But it seems that those builds fails only with openssl as a dependency.

I've setup a toy-repo with CirrusCI aarch64 runners on Alpine.

there are 3 configurations

1. FAILS Explicitly selecting openssl: build log
2. FAILS Bindings-over system tls: build log
3. PASSES Rustls: build log

App does simple dns-over-tls query to example.com

build with cargo build --release --verbose
alpine latest stable
rust latest stable from rustup

Thanks in advance!

[michalszmidt]

I fetched rust from alpine repo and compilation passed.
See those builds

So what we know is:

• Rust fetched from rustup on musl aarch64 will fail with openssl dependency
• Rust fetched from rustup on musl aarch64 without openssl dependency will pass
• Rust fetched from alpine with openssl dependency will pass
• glibc and amd64 combinations will pass

[sfackler]

rust-lang/rust#89626

[michalszmidt]

I confirm that adding below to cargo.toml works for openssl and native-tls options
build logs

[target.aarch64-unknown-linux-musl]
rustflags = ["-C", "-mno-outline-atomics"]

I suppose you didn't apply it for some reason, so I close this issue.
Maybe worth mentioning in wiki?