1. Faster rust builds!
[target.x86_64-unknown-linux-gnu]
linker = "clang"
rustflags = [
"-C", "link-arg=-fuse-ld=mold",
"-C", "target-cpu=native"
]
2. Faster `makepkg` with ArchLinux, by adding "-fuse-ld=mold" to CFLAGS.
Git life pro tip (that you didn't know you needed until now): You can use .git/info/exclude (present in every Git repository) as a local, private version of .gitignore. It has the same syntax as .gitignore, but isn't tracked by Git. So you could add .cargo/config.toml to .git/info/exclude, changing the linker locally without Git considering it as an untracked file. I generally use this feature to ignore files that are specific to my development setup which I don't want to list in .gitignore.
A similar one: ~/.config/git/ignore is a global private gitignore.
Great for files across repos which you always want to ignore, such as temporary files from an editor
(fairly large Rust project, 24-core machine, Linux)
-- GNU Ld 2.31.1
>> cargo build --release
Compiling mfl v0.1.0 (/mnt/d/Programming/Projects/Rust/mfl/crates/mfl)
Finished release [optimized + debuginfo] target(s) in 10.14s
-- LLD-14
>> cargo build --release
Compiling mfl v0.1.0 (/mnt/d/Programming/Projects/Rust/mfl/crates/mfl)
Finished release [optimized + debuginfo] target(s) in 6.20s
-- Mold 2.0
>> cargo build --release
Compiling mfl v0.1.0 (/mnt/d/Programming/Projects/Rust/mfl/crates/mfl)
Finished release [optimized + debuginfo] target(s) in 6.02s
cargo clean
cargo build --release
touch crates/mfl/src/main.rs
cargo build --release