Enable arm64 Linux builds

Author: adazem009

.github/workflows/linux-build.yml

@@ -12,11 +12,18 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        qt-version: ['6.8']
-        qt-target: ['desktop']
-        qt-modules: ['']
-        arch: ['amd64']
-        ubuntu-version: ['20.04']
+        include:
+          - qt-host: 'linux_arm64'
+            qt-version: '6.8'
+            qt-target: 'desktop'
+            qt-modules: ''
+            qt-arch: 'linux_gcc_64'
+            arch: 'amd64'
+          - qt-version: '6.8'
+            qt-target: 'desktop'
+            qt-modules: ''
+            qt-arch: 'linux_gcc_arm64'
+            arch: 'aarch64'
     steps:
     - uses: actions/checkout@v3
       with:
@@ -47,26 +54,10 @@ jobs:
       uses: jurplel/install-qt-action@v4
       with:
         version: ${{ matrix.qt-version }}
-        host: 'linux'
-        arch: 'linux_gcc_64'
+        host: ${{ matrix.qt-host}}
+        arch: ${{ matrix.qt-arch }}
         target: ${{ matrix.qt-target }}
         modules: ${{ matrix.qt-modules }}
-    - if: "!contains(matrix.arch, 'amd64')"
-      name: Restore cross-compiled Qt from cache
-      id: cache-qt-cross
-      uses: actions/cache@v3
-      with:
-        path: |
-          ./qt-host/
-          ./qt-cross/
-          ./sysroot/
-        key: qt-cross-${{ runner.os }}-${{ matrix.qt-version }}-${{ matrix.qt-target }}-${{ matrix.qt-modules }}-${{ matrix.arch }}
-        restore-keys:
-          qt-cross-${{ runner.os }}-${{ matrix.qt-version }}-${{ matrix.qt-target }}-${{ matrix.qt-modules }}-${{ matrix.arch }}
-    - if: "!contains(matrix.arch, 'amd64') && steps.cache-qt-cross.outputs.cache-hit != 'true'"
-      name: Cross-compile Qt
-      shell: bash
-      run: .ci/build_qt6.sh "${{ matrix.qt-version }}" "${{ matrix.qt-modules }}" "${{ matrix.arch }}"
     ## Build
     - if: "!contains(matrix.arch, 'amd64')"
       name: Prepare cross-compilation environment