build on chimera linux fails: 1. dynamic build has missing libgcc dependency, 2. static build fails due to clap_derive needing dynamic linking

[matu3ba]

Context
Background on what is broken in rustc (besides language features like proc macros depending on linking mode): rust-lang/rust#135244 and rust-lang/rust#95926
System: Chimera Linux with network installation.

1. dynamic build problem

# alternative 1
set -x RUSTFLAGS "-C target-feature=+crt-static"
cargo install stylua --features lua52 --target x86_64-unknown-linux-musl
# alternative 2
set -x RUSTFLAGS "-C target-feature=-crt-static"
cargo install stylua --features lua52

Output

error: linking with `cc` failed: exit status: 1
[...]
  = note: some arguments are omitted. use `--verbose` to show all linker arguments
  = note: ld: error: unable to find library -lgcc_s
          cc: error: linker command failed with exit code 1 (use -v to see invocation)

2. static build problem

set -x RUSTFLAGS "-C target-feature=+crt-static"
cargo install stylua --features lua52

Output

cargo install stylua --features lua52
    Updating crates.io index
  Installing stylua v2.0.2
    Updating crates.io index
     Locking 97 packages to latest compatible versions
      Adding clap v3.2.25 (available: v4.5.32)
      Adding env_logger v0.10.2 (available: v0.11.7)
      Adding thiserror v1.0.69 (available: v2.0.12)
error: failed to compile `stylua v2.0.2`, intermediate artifacts can be found at `/tmp/cargo-installlGgsiF`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.

Caused by:
  cannot produce proc-macro for `clap_derive v3.2.25` as the target `x86_64-unknown-linux-musl` does not support these crate types

Solution 1
Describe in README correct flags to disable clap_derive for static builds to just work on any host system.

Solution 2
Explain how to set musl dynamic linking.

Solution 3
Explain that musl host systems are not supported.

Solution 4
Link to gcc based cross-compiler setup with rustc and cargo for proc-macro to "just work".

[q66]

none of this is related to stylua so why are you opening that here

it works fine with the distro's toolchain: https://pkgs.chimera-linux.org/packages?name=stylua&origin=

[JohnnyMorganz]

I don't know much about chimera linux, but we do already publish a stylua-linux-x86_64-musl.zip release artifact that is based on musl, so I believe it should be working. As also seen by the link above

[q66]

the issue they are facing is most likely due to upstream rust compilers not handling systems that are clang-native well (due to those having no libgcc/libgcc_s and instead using libclang_rt.builtins staticlib and libunwind) but this is patched in distro toolchain

[JohnnyMorganz]

Gotcha. I will close this issue then as I see no further action needed on StyLua side