Add gcov based coverage via github actions

.github/workflows/build-coverage.yml

@@ -0,0 +1,139 @@
+name: Coverage Report
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+    - .github/workflows/*.yml
+    - '**CMakeLists.txt'
+    - 'cmake/**'
+    - 'examples/**'
+    - 'src/**'
+    - '!**Makefile'
+    - '!**md'
+  pull_request:
+    branches:
+      - main
+    paths:
+    - .github/workflows/*.yml
+    - '**CMakeLists.txt'
+    - 'cmake/**'
+    - 'examples/**'
+    - 'src/**'
+    - '!**Makefile'
+    - '!**md'
+
+#env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+
+  coverage:
+    name: Coverage Build
+    # Use GNU compilers
+
+    # The CMake configure and build commands are platform agnostic and should work equally
+    # well on Windows or Mac.  You can convert this to a matrix build if you need
+    # cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 5
+
+    env:
+      BUILD_TYPE: Debug
+      FFLAGS: ${{ matrix.fflags }}
+
+    strategy:
+      fail-fast: true
+      matrix:
+        os: [ ubuntu-latest ]
+        fflags: [
+          "-Wall -Wno-unused-dummy-argument -Wno-unused-variable -Wno-unused-label -fimplicit-none -frecursive -fopenmp" ]
+      # Better flags but not used by now:
+      #   "-Wall -Wno-unused-dummy-argument -Wno-unused-variable -Wno-unused-label -Werror=conversion -fimplicit-none -frecursive -fcheck=all",
+      #   "-Wall -Wno-unused-dummy-argument -Wno-unused-variable -Wno-unused-label -Werror=conversion -fimplicit-none -frecursive -fcheck=all -fopenmp" ]
+
+    steps:
+
+    - name: Checkout SLICOT
+      uses: actions/checkout@v4.2.2
+
+    - name: Install basics (Ubuntu)
+      if: ${{ matrix.os == 'ubuntu-latest' }}
+      run: |
+        sudo apt update
+        sudo apt install -y cmake liblapack-dev libblas-dev gcovr
+
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: >
+        cmake -B build -G Ninja
+        -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+        -D CMAKE_INSTALL_PREFIX=${{github.workspace}}/lapack_install
+        -D SLICOT_TESTING:BOOL=ON
+        -D BUILD_SHARED_LIBS:BOOL=ON
+        -D ENABLE_COVERAGE:BOOL=ON
+
+    - name: Build
+      working-directory: ${{github.workspace}}/build
+      run: ninja
+
+    - name: Test
+      working-directory: ${{github.workspace}}/build
+      run: ninja test
+    - name: Collect coverage results
+      working-directory: ${{github.workspace}}/build
+      run: ninja gcov
+
+
+    - name: Generate HTML Report
+      uses: threeal/gcovr-action@v1.2.0
+      with:
+        html-out: coverage.html
+        xml-out: cobertura.xml
+        coveralls-out: coveralls.json
+        print-summary: true
+        root: ${{github.workspace}}
+
+    - name: Produce the coverage report
+      uses: insightsengineering/coverage-action@v3
+      with:
+        # Path to the Cobertura XML report.
+        path: ./cobertura.xml
+        # Minimum total coverage, if you want to the
+        # workflow to enforce it as a standard.
+        # This has no effect if the `fail` arg is set to `false`.
+        threshold: 45.00
+        # Fail the workflow if the minimum code coverage
+        # reuqirements are not satisfied.
+        fail: true
+        # Publish the rendered output as a PR comment
+        publish: true
+        exclude-detailed-coverage: true
+        # Create a coverage diff report.
+        diff: true
+        # Branch to diff against.
+        # Compare the current coverage to the coverage
+        # determined on this branch.
+        diff-branch: main
+        # This is where the coverage reports for the
+        # `diff-branch` are stored.
+        # Branch is created if it doesn't already exist'.
+        diff-storage: _xml_coverage_reports
+        # A custom title that can be added to the code
+        # coverage summary in the PR comment.
+        coverage-summary-title: "Code Coverage Summary"
+        # Failure modes for coverage regression detection:
+        # Fail if any changed file has more uncovered lines (pycobertura exit code 2)
+        uncovered-statements-increase-failure: false
+        # Fail if new uncovered statements are introduced despite overall improvement (pycobertura exit code 3)
+        new-uncovered-statements-failure: false
+        # Fail if the overall coverage percentage decreases (more forgiving approach)
+        coverage-rate-reduction-failure: true
+

.github/workflows/build-unix.yml

@@ -116,50 +116,7 @@ jobs:
     - name: Install
       run: cmake --build build --target install -j2
 
-  coverage:
-    runs-on: ubuntu-latest
-    env:
-      BUILD_TYPE: Coverage
-      FFLAGS: "-fopenmp"
-    steps:
-
-    - name: Checkout SLICOT
-      uses: actions/checkout@v4.2.2
-
-    - name: Install ninja-build tool
-      uses: seanmiddleditch/gha-setup-ninja@v6
-
-    - name: Install basics
-      run: |
-        sudo apt update
-        sudo apt install -y cmake liblapack-dev libblas-dev
-
-
-    - name: Configure CMake
-      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
-      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
-      run: >
-        cmake -B build -G Ninja
-        -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
-        -D CMAKE_INSTALL_PREFIX=${{github.workspace}}/lapack_install
-        -D SLICOT_BUILD_TESTING:BOOL=ON
-        -D SLICOT_BUILD_SHARED_LIBS:BOOL=ON
-
-    - name: Build
-      # Execute tests defined by the CMake configuration.
-      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
-      run: cmake --build build --config ${{env.BUILD_TYPE}}
-
-    - name: Test with OpenMP
-      working-directory: ${{github.workspace}}/build
-      run: ctest -C ${{env.BUILD_TYPE}} --schedule-random -j1 --output-on-failure --timeout 100
-
-    - name: Generate HTML Report
-      uses: threeal/gcovr-action@v1.1.0
-      with:
-        html-out: coverage.html
-
-#  memory-check:
+  #  memory-check:
 #    runs-on: ubuntu-latest
 #    env:
 #      BUILD_TYPE: Debug