Revert "opt: remove elinux deps for arm64"

This reverts commit a4f405c18219287388ad632fbfa2a94b05d5d388.

.github/workflows/flutter-build.yml

@@ -10,6 +10,9 @@ on:
 env:
   LLVM_VERSION: "15.0.6"
   FLUTTER_VERSION: "3.10.0"
+  # for arm64 linux
+  FLUTTER_ELINUX_VERSION: "3.7.0"
+  FLUTTER_ELINUX_COMMIT_ID: "51a1d685901f79fbac51665a967c3a1a789ecee5"
   TAG_NAME: "nightly"
   # vcpkg version: 2023.04.15
   # for multiarch gcc compatibility
@@ -1160,18 +1163,18 @@ jobs:
           name: librustdesk-${{ matrix.job.arch }}-${{ matrix.job.extra-build-features }}.so
           path: ./target/release/
 
-      # - name: Download Flutter
-      #   shell: bash
-      #   run: |
-      #     # disable git safe.directory
-      #     git config --global --add safe.directory "*"
-      #     pushd /opt
-      #     # clone repo and reset to flutter ${{ env.FLUTTER_VERSION }} 
-      #     git clone https://github.com/sony/flutter-elinux.git || true
-      #     pushd flutter-elinux
-      #       git fetch
-      #       git reset --hard ${{ env.FLUTTER_ELINUX_COMMIT_ID }} 
-      #     popd
+      - name: Download Flutter
+        shell: bash
+        run: |
+          # disable git safe.directory
+          git config --global --add safe.directory "*"
+          pushd /opt
+          # clone repo and reset to flutter 3.7.0
+          git clone https://github.com/sony/flutter-elinux.git || true
+          pushd flutter-elinux
+            git fetch
+            git reset --hard ${{ env.FLUTTER_ELINUX_COMMIT_ID }} 
+          popd
 
       - uses: Kingtous/run-on-arch-action@amd64-support
         name: Build rustdesk binary for ${{ matrix.job.arch }}
@@ -1185,6 +1188,7 @@ jobs:
           dockerRunArgs: |
             --volume "${PWD}:/workspace"
             --volume "/opt/artifacts:/opt/artifacts"
+            --volume "/opt/flutter-elinux:/opt/flutter-elinux"
           shell: /bin/bash
           install: |
             apt update -y
@@ -1192,20 +1196,19 @@ jobs:
           run: |
             # disable git safe.directory
             git config --global --add safe.directory "*"
-            pushd /opt
-            # Setup Flutter
-            wget https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${{ env.FLUTTER_VERSION }}-stable.tar.xz
-            tar xf flutter_linux_${{ env.FLUTTER_VERSION }}-stable.tar.xz
-            ls -l .
-            export PATH=/opt/flutter/bin:$PATH
-            flutter doctor -v
+            pushd /workspace
+            # we use flutter-elinux to build our rustdesk
+            export PATH=/opt/flutter-elinux/bin:$PATH
+            sed -i "s/flutter build linux --release/flutter-elinux build linux/g" ./build.py
+            # Setup flutter-elinux. Run doctor to check if issues here.
+            flutter-elinux doctor -v
             # Patch arm64 engine for flutter 3.6.0+
-            flutter precache --linux
-            # pushd /tmp
-            # curl -O https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.7.0-stable.tar.xz
-            # tar -xvf flutter_linux_3.7.0-stable.tar.xz flutter/bin/cache/artifacts/engine/linux-x64/shader_lib
-            # cp -R flutter/bin/cache/artifacts/engine/linux-x64/shader_lib /opt/flutter-elinux/flutter/bin/cache/artifacts/engine/linux-arm64
-            # popd
+            flutter-elinux precache --linux
+            pushd /tmp
+            curl -O https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.7.0-stable.tar.xz
+            tar -xvf flutter_linux_3.7.0-stable.tar.xz flutter/bin/cache/artifacts/engine/linux-x64/shader_lib
+            cp -R flutter/bin/cache/artifacts/engine/linux-x64/shader_lib /opt/flutter-elinux/flutter/bin/cache/artifacts/engine/linux-arm64
+            popd
             # edit to corresponding arch
             case ${{ matrix.job.arch }} in
               aarch64)