Install clang manually

Author: Hind-M

.github/workflows/analysis.yml

@@ -11,15 +11,23 @@ jobs:
     runs-on: ubuntu-24.04
 
     steps:
+    # Set up Clang and LLVM
+    - name: Install LLVM and Clang
+      run: |
+        wget https://apt.llvm.org/llvm.sh
+        chmod +x llvm.sh
+        sudo ./llvm.sh 20
+        sudo apt-get install -y clang-tools-20
+        sudo update-alternatives --install /usr/bin/clang++         clang++         /usr/bin/clang++-20 200
+        sudo update-alternatives --install /usr/bin/clang           clang           /usr/bin/clang-20 200
+        sudo update-alternatives --install /usr/bin/clang-scan-deps clang-scan-deps /usr/bin/clang-scan-deps-20 200
+        sudo update-alternatives --set clang /usr/bin/clang-20
+        sudo update-alternatives --set clang++ /usr/bin/clang++-20
+        sudo update-alternatives --set clang-scan-deps /usr/bin/clang-scan-deps-20
+
     - name: Checkout repository
       uses: actions/checkout@v4
 
-    # Set up Clang and LLVM
-    - name: Set up Clang
-      uses: llvm/actions/setup-clang@v2
-      with:
-        clang-version: 20
-
     # Set conda environment using setup-micromamba
     - name: Set conda environment
       uses: mamba-org/setup-micromamba@main
@@ -32,12 +40,13 @@ jobs:
     # Run CMake configuration
     - name: Configure using CMake
       run: |
+        export CC=clang; export CXX=clang++
         cmake -G Ninja \
         -Bbuild \
         -DCMAKE_BUILD_TYPE=Release \
         -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX \
         -DBUILD_TESTS=ON \
-        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
+        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
         #-DFETCH_DEPENDENCIES_WITH_CMAKE=MISSING
 
     # Run Clang-Tidy and Clang-Format Analysis