ci: use mold linker (#17)

* ci: use lld and mold linker

* install mold

* use sudo

* use github actions

* install mold by curl

* remove sudo

* mold for coverage

* show error

* hardcode

* use env

* export

* put in a script

* relative root

* not array

* move to script

* pre-build to build

* add linker

* update cross

* check

* check

* debian

* library

* only cargo

* cargobin

* build

* only linux gnu

.cargo/config.toml

@@ -0,0 +1,3 @@
+#TODO: enable mold for other target
+[target.x86_64-unknown-linux-gnu]
+rustflags = ["-C", "link-arg=-fuse-ld=mold"]

.github/workflows/coverage.yaml

@@ -31,6 +31,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+      - uses: rui314/setup-mold@v1
       - name: Install Rust
         run: rustup update stable
       - name: Install cargo-llvm-cov

.github/workflows/main.yaml

@@ -47,9 +47,13 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+      - name: Install mold
+        uses: rui314/setup-mold@v1
+        if: matrix.platform.command == 'cargo'
       - uses: cargo-bins/cargo-binstall@main
       - name: Install cross
         run: cargo binstall cross --no-confirm
+        if: matrix.platform.command == 'cross'
       - name: Build and test
         run: ${{ matrix.platform.command }} test --locked --target ${{ matrix.platform.target }}
 

Cross.toml

@@ -1,8 +1,5 @@
 [build.env]
 passthrough = ["DATABASE_URL"]
 
-[target.aarch64-unknown-linux-gnu]
-pre-build = [
-  "dpkg --add-architecture $CROSS_DEB_ARCH",
-  "apt-get update && apt-get --assume-yes install libpq-dev:$CROSS_DEB_ARCH",
-]
+[build]
+pre-build = "ci/cross-pre-build.sh"

ci/cross-pre-build.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euxo pipefail
+
+if [[ "$CROSS_TARGET" == "aarch64-unknown-linux-gnu" ]]; then
+  dpkg --add-architecture $CROSS_DEB_ARCH
+  apt-get update && apt-get --assume-yes install libpq-dev:$CROSS_DEB_ARCH
+fi