Improve CI

.github/workflows/ci.yml

@@ -2,41 +2,36 @@ name: Build Qwt
 
 on: [push, pull_request]
 jobs:
-  ResInsight-x64:
+  build-qwt:
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
         qtver: [5.12.12, 6.5.3]
+        include:
+          - qtver: 6.5.3
+            build_flags: -DUSE_QT6=TRUE
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Install Linux dependencies
+        if: contains(matrix.os, 'ubuntu')
+        run: sudo apt-get install libxkbcommon-x11-0 libgl1-mesa-dev mesa-common-dev libglfw3-dev libglu1-mesa-dev
+
       - name: Install Qt
         uses: jurplel/install-qt-action@v3
         with:
           version: ${{ matrix.qtver }}
           dir: "${{ github.workspace }}/Qt/"
           cache: true
           cache-key-prefix: ${{ matrix.qtver }}-${{ matrix.os }}
-
-      - name: Install Linux dependencies
-        if: "contains( matrix.os, 'ubuntu')"
-        run: sudo apt-get install libxkbcommon-x11-0 libgl1-mesa-dev mesa-common-dev libglfw3-dev libglu1-mesa-dev
 
       - name: Use MSVC (Windows)
         uses: ilammy/msvc-dev-cmd@v1
 
-      - name: Configure 5.12
-        if: "contains( matrix.qtver, '5.12')"
-        run: |
-          cmake -S . -B build
-
-      - name: Configure 6.5
-        if: "contains( matrix.qtver, '6.5')"
+      - name: Configure and build
         run: |
-          cmake -S . -DUSE_QT6=TRUE -B build
-  
-      - name: Build
-        run: cmake --build build
+          cmake -S . ${{matrix.build_flags}} -B build
+          cmake --build build