Report coverage for latest Mapnik as well (openstreetmap#375)

_Also_:
* Don't build unneeded `latest` Mapnik `benchmarks`/`demos`/`utilities`

.github/actions/coverage/action.yml

@@ -0,0 +1,28 @@
+---
+inputs:
+  lcov-extra-options:
+    default: ""
+
+runs:
+  using: composite
+  steps:
+    - name: Process `mod_tile` coverage results
+      run: |
+        ctest -T coverage || true
+        lcov ${{ inputs.lcov-extra-options }} \
+          --capture \
+          --directory . \
+          --output-file coverage.info
+        lcov ${{ inputs.lcov-extra-options }} \
+          --output-file coverage.info \
+          --remove coverage.info \
+          "${GITHUB_WORKSPACE}/includes/catch/catch.hpp" \
+          "${GITHUB_WORKSPACE}/src/gen_tile_test.cpp" \
+          "/usr/*"
+      working-directory: build
+      shell: bash --noprofile --norc -euxo pipefail {0}
+
+    - name: Report `mod_tile` coverage results to `codecov.io`
+      uses: codecov/codecov-action@v3
+      with:
+        files: build/coverage.info

.github/actions/dependencies/build-and-install/mapnik/latest/action.yml

@@ -9,7 +9,7 @@ runs:
         path: |
           mapnik-build
           mapnik-src
-        key: ${{ matrix.image }}-${{ matrix.compiler }}-mapnik-latest
+        key: ${{ matrix.image || matrix.os || github.job }}-${{ matrix.compiler }}-mapnik-latest
 
     - name: Checkout `Mapnik`
       uses: actions/checkout@v4
@@ -23,14 +23,23 @@ runs:
       run: |
         export CMAKE_BUILD_PARALLEL_LEVEL=${BUILD_PARALLEL_LEVEL:-$(nproc)}
         cmake -B mapnik-build -S mapnik-src \
+          -DBUILD_BENCHMARK:BOOL=OFF \
+          -DBUILD_DEMO_CPP:BOOL=OFF \
           -DBUILD_DEMO_VIEWER:BOOL=OFF \
           -DBUILD_TESTING:BOOL=OFF \
+          -DBUILD_UTILITY_GEOMETRY_TO_WKB:BOOL=OFF \
+          -DBUILD_UTILITY_MAPNIK_INDEX:BOOL=OFF \
+          -DBUILD_UTILITY_MAPNIK_RENDER:BOOL=OFF \
+          -DBUILD_UTILITY_OGRINDEX:BOOL=OFF \
+          -DBUILD_UTILITY_PGSQL2SQLITE:BOOL=OFF \
+          -DBUILD_UTILITY_SHAPEINDEX:BOOL=OFF \
+          -DBUILD_UTILITY_SVG2PNG:BOOL=OFF \
           -DCMAKE_BUILD_TYPE:STRING=Release \
           -DCMAKE_INSTALL_PREFIX:PATH=/usr
         cmake --build mapnik-build
       shell: bash --noprofile --norc -euxo pipefail {0}
       if: steps.cache-mapnik.outputs.cache-hit != 'true'
 
     - name: Install `Mapnik`
-      run: cmake --install mapnik-build
+      run: ${{ !matrix.image && 'sudo' || '' }} cmake --install mapnik-build
       shell: bash --noprofile --norc -euxo pipefail {0}

.github/actions/dependencies/install/action.yml

@@ -321,7 +321,7 @@ runs:
       uses: ./.github/actions/dependencies/build-and-install/mapnik/latest
       if: |
         matrix.mapnik_latest &&
-        (startsWith(matrix.image, 'debian:') || startsWith(matrix.image, 'ubuntu:'))
+        (startsWith(matrix.image, 'debian:') || startsWith(matrix.image, 'ubuntu:') || runner.os == 'Linux')
 
     - name: Build & Install latest `mapnik` (openSUSE)
       uses: ./.github/actions/dependencies/build-and-install/mapnik/latest

.github/workflows/coverage.yml

@@ -11,56 +11,67 @@ on:
 
 jobs:
   Coverage:
-    name: Build, Test & Report Coverage
+    name: >-
+      Build, Test & Report Coverage
+      ${{ matrix.mapnik_latest && '(Latest Mapnik)' || '' }}
     runs-on: ubuntu-latest
     env:
       BUILD_TYPE: Debug
       CFLAGS: --coverage
       CXXFLAGS: --coverage
+    strategy:
+      matrix:
+        compiler:
+          - GNU
+        mapnik_latest:
+          - false
+          - true
+      fail-fast: false
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
 
       - name: Install dependencies
         uses: ./.github/actions/dependencies/install
         with:
-          ubuntu-test-dependencies: >-
-            apache2
-            jq
-            lcov
-            memcached
+          ubuntu-mapnik-latest-build-dependencies: >-
+            cmake
+            git
+            libboost-filesystem-dev
+            libboost-program-options-dev
+            libboost-regex-dev
+            libfreetype6-dev
+            libgdal-dev
+            libharfbuzz-dev
+            libicu-dev
+            libjpeg-dev
+            libpq-dev
+            libproj-dev
+            libsqlite3-dev
+            libtiff-dev
+            libwebp-dev
+            libxml2-dev
 
       - name: Build `mod_tile`
         uses: ./.github/actions/cmake/build
 
       - name: Test `mod_tile`
         uses: ./.github/actions/cmake/test
 
-      - name: Process `mod_tile` coverage results
-        run: |
-          lcov \
-            --capture \
-            --directory . \
-            --output-file coverage.info
-          lcov \
-            --output-file coverage.info \
-            --remove coverage.info \
-            "${GITHUB_WORKSPACE}/includes/catch/catch.hpp" \
-            "${GITHUB_WORKSPACE}/src/gen_tile_test.cpp" \
-            "/usr/*"
-          genhtml coverage.info --output-directory coverage
-        working-directory: build
+      - name: Process & Report `mod_tile` coverage results
+        uses: ./.github/actions/coverage
 
       - name: Write coverage summary to `$GITHUB_STEP_SUMMARY`
         run: lcov --summary build/coverage.info | sed 's/^  /* /g' >> ${GITHUB_STEP_SUMMARY}
 
+      - name: Generate `mod_tile` coverage results artifact
+        run: |
+          mkdir -p coverage
+          genhtml coverage.info --output-directory coverage/${{ matrix.mapnik_latest && 'mapnik_latest' || 'mapnik' }}
+        working-directory: build
+
       - name: Upload `mod_tile` coverage results artifact
         uses: actions/upload-artifact@v3
         with:
           name: Coverage Results
           path: build/coverage
-
-      - name: Report `mod_tile` coverage results to `codecov.io`
-        uses: codecov/codecov-action@v3
-        with:
-          files: build/coverage.info