Update ccpp.yml

- closes https://github.com/assimp/assimp/issues/3656

.github/workflows/ccpp.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        name: [ubuntu-latest-g++, macos-latest-clang++, windows-latest-cl.exe, ubuntu-latest-clang++, ubuntu-gcc-hunter, macos-clang-hunter, windows-msvc-hunter]
+        name: [ubuntu-latest-g++, macos-latest-clang++, windows-latest-cl.exe, ubuntu-latest-clang++, ubuntu-gcc-hunter, macos-clang-hunter, windows-msvc-hunter, ubuntu-latest-gcov]
         # For Windows msvc, for Linux and macOS let's use the clang compiler, use gcc for Linux.
         include:
           - name: windows-latest-cl.exe
@@ -41,6 +41,10 @@ jobs:
           - name: windows-msvc-hunter
             os: windows-latest
             toolchain: ninja-vs-win64-cxx17
+          - name: ubuntu-latest-gcov
+            os: ubuntu-latest
+            cxx: g++
+            cc: gcc
 
     steps:
     - uses: actions/checkout@v2
@@ -67,8 +71,11 @@ jobs:
       uses: actions/checkout@v2
       with:
         repository: cpp-pm/polly
-        path: cmake/polly
+        path: cmake/polly 
 
+    - name: Install  lcov
+      uses: danielealbano/lcov-action@v1
+      
     - name: Remove contrib directory for Hunter builds
       if: contains(matrix.name, 'hunter')
       uses: JesseTG/rm@v1.0.2
@@ -99,7 +106,7 @@ jobs:
     - name: Set Hunter specific CMake arguments
       if: contains(matrix.name, 'hunter')
       id: hunter_extra_cmake_args
-      run: echo "::set-output name=args::-DBUILD_SHARED_LIBS=OFF -DASSIMP_HUNTER_ENABLED=ON -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/cmake/polly/${{ matrix.toolchain }}.cmake"
+      run: echo "::set-output name=args::-DBUILD_SHARED_LIBS=OFF -DASSIMP_HUNTER_ENABLED=ON -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/cmake/polly/${{ matrix.toolchain }}.cmake -DASSIMP_COVERALLS=ON"
 
     - name: configure and build
       uses: lukka/run-cmake@v3
@@ -121,6 +128,12 @@ jobs:
     - name: test
       run: cd build/bin && ./unit ${{ steps.hunter_extra_test_args.outputs.args }}
       shell: bash
+      
+    - name: Coveralls
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        cmakeAppendedArgs: '-DASSIMP_COVERALLS=ON'
 
     - uses: actions/upload-artifact@v2
       if: matrix.name == 'windows-msvc'