Can't build on M3 MacPro with sold linker

[fcoury]

> $ cargo install --path .
  Installing bacon v2.14.3-dev (/Users/fcoury/code/bacon)
    Updating crates.io index
   Compiling proc-macro2 v1.0.78
   Compiling unicode-ident v1.0.12
   Compiling libc v0.2.153
   Compiling autocfg v1.1.0
   Compiling thiserror v1.0.57
   Compiling cfg-if v1.0.0
   Compiling serde v1.0.197
   Compiling parking_lot_core v0.9.9
   Compiling memchr v2.7.1
   Compiling crossbeam-utils v0.8.19
   Compiling regex-syntax v0.8.2
   Compiling once_cell v1.19.0
   Compiling smallvec v1.13.1
   Compiling scopeguard v1.2.0
   Compiling tinyvec_macros v0.1.1
   Compiling gix-trace v0.1.7
   Compiling rayon-core v1.12.1
   Compiling tinyvec v1.6.0
   Compiling crc32fast v1.4.0
   Compiling fastrand v2.0.1
   Compiling adler v1.0.2
   Compiling same-file v1.0.6
   Compiling bitflags v2.4.2
   Compiling either v1.10.0
   Compiling walkdir v2.4.0
   Compiling lock_api v0.4.11
   Compiling aho-corasick v1.1.2
   Compiling miniz_oxide v0.7.2
   Compiling bytesize v1.3.0
error: failed to run custom build command for `thiserror v1.0.57`

Caused by:
  process didn't exit successfully: `/Users/fcoury/code/bacon/target/release/build/thiserror-5ab653d5974c1640/build-script-build` (signal: 10, SIGBUS: access to undefined memory)
warning: build failed, waiting for other jobs to finish...
error: failed to run custom build command for `rayon-core v1.12.1`

Caused by:
  process didn't exit successfully: `/Users/fcoury/code/bacon/target/release/build/rayon-core-2c5ae3065a5d199f/build-script-build` (signal: 10, SIGBUS: access to undefined memory)
error: failed to run custom build command for `serde v1.0.197`

Caused by:
  process didn't exit successfully: `/Users/fcoury/code/bacon/target/release/build/serde-32f36e526d05b2fa/build-script-build` (signal: 11, SIGSEGV: invalid memory reference)
error: failed to run custom build command for `parking_lot_core v0.9.9`

Caused by:
  process didn't exit successfully: `/Users/fcoury/code/bacon/target/release/build/parking_lot_core-4a7529d07e68ff4c/build-script-build` (signal: 10, SIGBUS: access to undefined memory)
error: failed to run custom build command for `crossbeam-utils v0.8.19`

Caused by:
  process didn't exit successfully: `/Users/fcoury/code/bacon/target/release/build/crossbeam-utils-eeed6c8973fa880e/build-script-build` (signal: 10, SIGBUS: access to undefined memory)
error: failed to run custom build command for `proc-macro2 v1.0.78`

Caused by:
  process didn't exit successfully: `/Users/fcoury/code/bacon/target/release/build/proc-macro2-296ff4b34021689d/build-script-build` (signal: 10, SIGBUS: access to undefined memory)
error: failed to run custom build command for `crc32fast v1.4.0`

Caused by:
  process didn't exit successfully: `/Users/fcoury/code/bacon/target/release/build/crc32fast-57edd767e203b1e3/build-script-build` (signal: 11, SIGSEGV: invalid memory reference)
error: failed to run custom build command for `libc v0.2.153`

Caused by:
  process didn't exit successfully: `/Users/fcoury/code/bacon/target/release/build/libc-7d3c3772beff9ff0/build-script-build` (signal: 10, SIGBUS: access to undefined memory)
error: failed to run custom build command for `lock_api v0.4.11`

Caused by:
  process didn't exit successfully: `/Users/fcoury/code/bacon/target/release/build/lock_api-10916c91955e0afb/build-script-build` (signal: 10, SIGBUS: access to undefined memory)
error: failed to compile `bacon v2.14.3-dev (/Users/fcoury/code/bacon)`, intermediate artifacts can be found at `/Users/fcoury/code/bacon/target`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.

[fcoury]

For future reference, this only happened when I had the sold linker configured. Removing it worked fine.

This was my .cargo/config.toml:

> $ cat ~/.cargo/config.toml
[target.aarch64-apple-darwin]
linker = "clang"
rustflags = ["-C", "link-arg=-fuse-ld=/usr/local/bin/ld64.mold"]

[Canop]

"sold linker" ? Is that mold ?

[fcoury]

Yes and no. The macOS version of mold is called sold and was a paid version until recently:

https://github.com/bluewhalesystems/sold

[Canop]

Ok. You may keep the issue open if you think it could be useful for bacon to be built using this linker.
But I won't work on it myself as I don't have a mac.

[fcoury]

Done, thank you! BTW sold also works in Linux if you want to take a look :-)

[joshka]

Unrelated to the issue (forgive my curiousity). When I last tested sold it was no faster for me than the default mac linker. Has that changed, or do you have some special case where it is indeed faster?