CI(CMake): Cmake llvm coverage cmake, cmake module

.github/workflows/cmake.yml

@@ -27,6 +27,11 @@ jobs:
     runs-on: ubuntu-22.04
     env:
       CMakeVersion: "3.22.0"
+      CC: clang-${{ matrix.llvm-version }}
+      CXX: clang++-${{ matrix.llvm-version }}
+    strategy:
+      matrix:
+        llvm-version: [19]
     steps:
       - name: Checkout GRASS
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -41,10 +46,19 @@ jobs:
           echo "$GITHUB_WORKSPACE/cmake-${{ env.CMakeVersion }}-${arch}/bin" >> $GITHUB_PATH
       - run: |
           cmake --version
+      - name: Apt LLVM
+        run: |
+          wget https://apt.llvm.org/llvm.sh
+          chmod +x llvm.sh
+          sudo ./llvm.sh ${{ matrix.llvm-version }}
+          sudo apt-get update
       - name: Install dependencies
         run: |
           sudo apt-get update -y
           sudo apt-get install -y wget git gawk findutils ninja-build libpq-dev \
+            clang-${{ matrix.llvm-version }} clang-tools-${{ matrix.llvm-version }} \
+            libomp-${{ matrix.llvm-version }}-dev lld-${{ matrix.llvm-version }} \
+            llvm-${{ matrix.llvm-version }} \
             gettext unixodbc-dev libnetcdf-dev
           xargs -a <(awk '! /^ *(#|$)/' ".github/workflows/apt.txt") -r -- \
               sudo apt-get install -y --no-install-recommends --no-install-suggests
@@ -61,11 +75,16 @@ jobs:
         run: |
           cmake ${CMAKE_OPTIONS} -S $GITHUB_WORKSPACE -B $GITHUB_WORKSPACE/build -G Ninja \
             -DCMAKE_INSTALL_PREFIX=$HOME/install -DWITH_NLS=ON -DWITH_GUI=OFF -DWITH_DOCS=OFF \
-            -DWITH_READLINE=ON -DWITH_ODBC=ON -DWITH_NETCDF=ON -DWITH_BZLIB=ON
+            -DWITH_READLINE=ON -DWITH_ODBC=ON -DWITH_NETCDF=ON -DWITH_BZLIB=ON \
+            -DCODE_COVERAGE=ON \
+            -DLLVM_PROFDATA_PATH=llvm-profdata-${{ matrix.llvm-version }} \
+            -DLLVM_COV_PATH=llvm-cov-${{ matrix.llvm-version }} \
+            -DCMAKE_C_COMPILER=clang-${{ matrix.llvm-version }} -DCMAKE_CXX_COMPILER=clang++-${{ matrix.llvm-version }}
       - name: Print CMakeCache.txt
         shell: bash -el {0}
         run: |
           cat ${GITHUB_WORKSPACE}/build/CMakeCache.txt
+      - run: cmake --build build --target help 
       - name: Build
         run: |
           cmake --build build --verbose -j$(nproc)
@@ -89,3 +108,25 @@ jobs:
           name: testreport-CMake
           path: testreport
           retention-days: 3
+      - run: |
+          cmake --build build --target ccov
+        if: ${{ !cancelled() }} 
+      - name: Make profile data available
+        if: ${{ !cancelled() }}
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: >-
+            profile-data-${{ 'cmake' }}
+          path: |
+            *.prof*
+            *coverage*
+            llvm_coverage*/**
+          retention-days: 1
+      - name: Upload coverage reports to Codecov
+        if: ${{ !cancelled() }}
+        uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5.4.3
+        with:
+          verbose: true
+          flags: linux-cmake
+          name: linux-cmake
+          token: ${{ secrets.CODECOV_TOKEN }}

.gunittest.cfg

@@ -25,6 +25,11 @@ exclude =
     vector/v.in.pdal/testsuite/test_v_in_pdal_basic.py
     vector/v.in.pdal/testsuite/test_v_in_pdal_filter.py
     vector/v.out.lidar/testsuite/test_v_out_lidar.py
+    ./temporal/*
+    *.sh
+    raster/*
+    python/grass/gunittest/*
+    vector/* 
 
 # Maximum time for execution of one test file (not a test function)
 # after which test is terminated (which may not terminate child processes

CMakeLists.txt

@@ -202,6 +202,8 @@ repo_status("${CMAKE_CURRENT_LIST_DIR}")
 
 enable_testing()
 
+include(code-coverage)
+
 include(build_module)
 include(build_program)
 include(build_program_in_subdir)
@@ -329,3 +331,4 @@ endif()
 if(WITH_X11)
   build_program_in_subdir(visualization/ximgview DEPENDS grass_gis X11::X11)
 endif()
+add_code_coverage()