4 ms·

I wonder if it would be a good idea for Rust to switch to mold for debug compilation.

• pizza234 4y ago
  For reference, it's trivial to configure it on one's projects: mkdir -p .cargo cat > .cargo/config.toml <<EOF [target.x86_64-unknown-linux-gnu] linker = "/usr/bin/clang" rustflags = ["-Clink-arg=-fuse-ld=/usr/bin/mold"] EOF (the above assumes a Linux target, and that the binaries are under `/usr/bin`) It's certainly true that the default linker is sloooooooow; I wonder which are the challenges in making mold/lld the default.
  • wh33zle 4y ago
    This can also be set user-wide (and thus apply to all projects automatically) by placing the `config.toml` into `~/.cargo`.
  • kzrdude 4y ago
    Which version of clang should i have for this?
    • pizza234 4y ago
      Good question! I can't answer, unfortunately. v13 and v14 surely work, but I think 12 will work as well (by that time, I was using lld, with mold is compatible).
• epage 4y ago
  For more on switching Rust to mold, see https://github.com/rust-lang/rust/issues/94347 https://github.com/rust-lang/rust/issues/94347