Add code-coverage for the fpm-deployment github action

Author: loiseaujc

.github/workflows/fpm-deployment.yml

@@ -35,15 +35,43 @@ jobs:
         with:
           fpm-version: 'v0.10.0'
 
+      - name: Prepare for code coverage
+        if: contains( matrix.os, 'ubuntu')
+        run: |
+          sudo apt-get install lcov
+          sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+          sudo apt-get update
+          sudo apt-get install -y gcc-13 gfortran-13
+          sudo update-alternatives \
+             --install /usr/bin/gcc gcc /usr/bin/gcc-13 100 \
+             --slave /usr/bin/gfortran gfortran /usr/bin/gfortran-13 \
+             --slave /usr/bin/gcov gcov /usr/bin/gcov-13
+
       - run: | # Just for deployment: create stdlib-fpm folder
           python config/fypp_deployment.py --deploy_stdlib_fpm
 
       - run: | # Just for deployment: create stdlib-fpm-ilp64 folder
           python config/fypp_deployment.py --deploy_stdlib_fpm --with_ilp64
 
-      - run: | # Use fpm gnu ci to check xdp and qp 
+      - run: | # Use fpm gnu ci to check xdp and qp
           python config/fypp_deployment.py --with_xdp --with_qp
-          fpm test --profile release --flag '-DWITH_XDP -DWITH_QP'
+          fpm test --profile release --flag '-DWITH_XDP -DWITH_QP -coverage'
+
+      - name: Create coverage report
+        run: |
+          mkdir -p ${{ env.COV_DIR }}
+          mv ./build/gfortran_*/*/* ${{ env.COV_DIR }}
+          lcov --capture --initial --base-directory . --directory ${{ env.COV_DIR }} --output-file ${{ env.COV_DIR }}/coverage.base
+          lcov --capture           --base-directory . --directory ${{ env.COV_DIR }} --output-file ${{ env.COV_DIR }}/coverage.capture
+          lcov --add-tracefile ${{ env.COV_DIR }}/coverage.base --add-tracefile ${{ env.COV_DIR }}/coverage.capture --output-file ${{ env.COV_DIR }}/coverage.info
+        env:
+            COV_DIR: build/coverage
+
+      - name: Upload coverage report
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: build/coverage/coverage.info
 
     # Update and deploy the f90 files generated by github-ci to the `stdlib-fpm` branch.
       - name: Deploy 🚀