Prepare Linux-ARM64

Author: sumneko

.github/workflows/build.yml

@@ -33,6 +33,12 @@ jobs:
         with:
           submodules: recursive
 
+      - name: Prepare Linux-ARM64
+        if: ${{ matrix.platform == 'linux-arm64' }}
+        run: |
+          apt-get update
+          apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
+
       - name: Install Luamake
         uses: actboy168/setup-luamake@master