Automatic strip = "debuginfo" in release mode does not work when using --target flag

[kamulos]

Problem

I am on glibc based linux and I installed the target x86_64-unknown-linux-musl additionally using rustup.

Rust intends to strip the debuginfo from release binaries, which seems to work fine for x86_64-unknown-linux-gnu, but not for x86_64-unknown-linux-musl.

These are the sizes I get for cargo build --release and a fresh Cargo.toml from cargo new (hello world) compared to what I get, when explicitly configuring strip = "debuginfo":

Configuration	Size
gnu	407K
musl	3.8M
gnu + strip	407K
musl + strip	510K

Steps

No response

Possible Solution(s)

No response

Notes

No response

Version

cargo 1.79.0-nightly (d438c80c4 2024-03-19)
release: 1.79.0-nightly
commit-hash: d438c80c45c24be676ef5867edc79d0a14910efe
commit-date: 2024-03-19
host: x86_64-unknown-linux-gnu
libgit2: 1.7.2 (sys:0.18.2 vendored)
libcurl: 8.6.0-DEV (sys:0.4.72+curl-8.6.0 vendored ssl:OpenSSL/1.1.1w)
ssl: OpenSSL 1.1.1w  11 Sep 2023
os: Arch Linux [64-bit]

[ehuss]

Thanks for the report! Can you confirm whether are you using the --target flag for both commands? I can see that the --target flag is indeed not working.

[kamulos]

Indeed, I was not using --target for my default x86_64-unknown-linux-gnu. If I do, it will also omit to strip the binary.

So this seems purely related to the --target flag.