add lld as a linker to improve compile times

Author: lmsonic

.cargo/config.toml

@@ -0,0 +1,23 @@
+
+# .cargo/config.toml
+# On Windows
+# ```
+# cargo install -f cargo-binutils
+# rustup component add llvm-tools-preview
+# ```
+[target.x86_64-pc-windows-msvc]
+rustflags = ["-C", "link-arg=-fuse-ld=lld"]
+[target.x86_64-pc-windows-gnu]
+rustflags = ["-C", "link-arg=-fuse-ld=lld"]
+
+# On Linux:
+# - Ubuntu, `sudo apt-get install lld clang`
+# - Arch, `sudo pacman -S lld clang`
+[target.x86_64-unknown-linux-gnu]
+rustflags = ["-C", "linker=clang", "-C", "link-arg=-fuse-ld=lld"]
+
+# On MacOS, `brew install llvm` and follow steps in `brew info llvm`
+[target.x86_64-apple-darwin]
+rustflags = ["-C", "link-arg=-fuse-ld=lld"]
+[target.aarch64-apple-darwin]
+rustflags = ["-C", "link-arg=-fuse-ld=/opt/homebrew/opt/llvm/bin/ld64.lld"]

.github/workflows/ci.yaml

@@ -30,7 +30,7 @@ jobs:
         uses: dtolnay/rust-toolchain@stable
 
       - name: Install dependencies
-        run: sudo apt-get update; sudo apt-get install --no-install-recommends libasound2-dev libudev-dev libwayland-dev libxkbcommon-dev
+        run: sudo apt-get update; sudo apt-get install --no-install-recommends libasound2-dev libudev-dev libwayland-dev libxkbcommon-dev lld clang
 
       - name: Populate target directory from cache
         uses: Leafwing-Studios/cargo-cache@v2