Build libprojectM-4 separately in workflow

Author: kblaschke

.github/workflows/linux.yml

@@ -19,8 +19,8 @@ jobs:
         include:
           - cc: gcc-12
             cxx: g++-12
-            clang_major_version: null
-            clang_repo_suffix: null
+            clang_major_version: ''
+            clang_repo_suffix: ''
             runs-on: ubuntu-22.04
           - cc: clang-17
             cxx: clang++-17
@@ -30,7 +30,7 @@ jobs:
           - cc: clang-18
             cxx: clang++-18
             clang_major_version: 18
-            clang_repo_suffix:
+            clang_repo_suffix: ''
             runs-on: ubuntu-22.04
     steps:
       - name: Add Clang/LLVM repositories
@@ -46,10 +46,26 @@ jobs:
           sudo apt-get update
           sudo apt-get install --yes --no-install-recommends \
             cmake \
-            libprojectm-dev \
             libvisual-0.4-dev \
             pkg-config
 
+      - name: Checkout libprojectM Sources
+        uses: actions/checkout@v4
+        with:
+          repository: projectM-visualizer/projectm
+          path: projectm
+          submodules: recursive
+
+      - name: Build/Install libprojectM
+        run: |
+          mkdir cmake-build-libprojectm
+          cmake -G Ninja -S projectm -B cmake-build-libprojectm  \
+            -DBUILD_SHARED_LIBS=OFF  \
+            -DCMAKE_BUILD_TYPE=Release  \
+            -DCMAKE_INSTALL_PREFIX=${{ github.workspace }}/install-libprojectm
+          cmake --build cmake-build-libprojectm --parallel
+          cmake --install "${{ github.workspace }}/cmake-build-libprojectm"
+
       - name: Install build dependency Clang ${{ matrix.clang_major_version }}
         if: "${{ contains(matrix.cxx, 'clang') }}"
         run: |-
@@ -64,6 +80,7 @@ jobs:
           cmake_args=(
             -DCMAKE_C_COMPILER="${{ matrix.cc }}"
             -DCMAKE_CXX_COMPILER="${{ matrix.cxx }}"
+            -DCMAKE_PREFIX_PATH="${{ github.workspace }}/install-libprojectm"
             -S ./
             -B build/
           )