Cross compile for aarch64 linux and macos

.github/workflows/post-release.yml

@@ -59,21 +59,38 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        build: [linux, macos, win-msvc]
+        build: [linux-x86_64, linux-aarch64, macos-x86_64, macos-aarch64, win-msvc]
         include:
-        - build: linux
+        - build: linux-x86_64
           os: ubuntu-20.04
           rust: stable
           target: x86_64-unknown-linux-musl
-        - build: macos
+          cross: false
+        - build: linux-aarch64
+          os: ubuntu-20.04
+          rust: stable
+          target: aarch64-unknown-linux-musl
+          cross: true
+        - build: macos-x86_64
           os: macos-latest
           rust: stable
           target: x86_64-apple-darwin
+          cross: false
+        - build: macos-aarch64
+          os: macos-latest
+          rust: stable
+          target: aarch64-apple-darwin
+          cross: true
         - build: win-msvc
           os: windows-2019
           rust: stable
           target: x86_64-pc-windows-msvc
+          cross: false
     runs-on: ${{ matrix.os }}
+    env:
+      CARGO: cargo
+      CROSS_VERSION: "0.2.5"
+    continue-on-error: ${{ matrix.cross }}
     steps:
     - name: Checkout repository
       uses: actions/checkout@v3
@@ -89,8 +106,19 @@ jobs:
       with:
         toolchain: ${{ matrix.rust }}
         targets: ${{ matrix.target }}
+    # Taken from https://github.com/rust-lang/regex project
+    - name: Install and configure Cross
+      if: matrix.cross
+      run: |
+        dir="$RUNNER_TEMP/cross-download"
+        mkdir "$dir"
+        echo "$dir" >> $GITHUB_PATH
+        cd "$dir"
+        curl -LO "https://github.com/cross-rs/cross/releases/download/v${CROSS_VERSION}/cross-x86_64-unknown-linux-musl.tar.gz"
+        tar xf cross-x86_64-unknown-linux-musl.tar.gz
+        echo "CARGO=cross" >> $GITHUB_ENV
     - name: Build release binary
-      run: cargo build --target ${{ matrix.target }} --verbose --release
+      run: ${{ env.CARGO }} build --target ${{ matrix.target }} --verbose --release
     - name: Build archive
       shell: bash
       run: |