check if works

.github/workflows/ut-backup.yml

@@ -21,6 +21,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: InstallLcov
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends lcov
+
       - name: Build
         run: |
           mkdir build && cd build
@@ -51,3 +56,16 @@ jobs:
           set -e
           cd build && make pylib-copy
           mpirun --allow-run-as-root -tag-output -np 8 $(which pytest) ../python/test/test_mscclpp.py -x
+
+      - name: ReportCoverage
+        run: |
+          cd build
+          lcov --capture --directory . --output-file coverage.info
+          lcov --remove coverage.info \
+              '/usr/*' \
+              '/tmp/*' \
+              '*/python/*' \
+              '*/test/*' \
+              '*/tools/*' \
+              --output-file coverage.info
+          lcov --list coverage.info

CMakeLists.txt

@@ -15,6 +15,18 @@ set(CMAKE_CUDA_STANDARD 17)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
 set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -Xcompiler -Wall,-Wextra")
 
+# Code coverage from https://github.com/codecov/example-cpp11-cmake
+add_library(coverage_config INTERFACE)
+if(CMAKE_BUILD_TYPE MATCHES "Debug" AND CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
+    # Add required flags (GCC & LLVM/Clang)
+    target_compile_options(coverage_config INTERFACE
+        -O0        # no optimization
+        -g         # generate debug info
+        --coverage # sets all required flags
+    )
+    target_link_options(coverage_config INTERFACE --coverage)
+endif()
+
 list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 
 # Format targets