fix compiler

.github/workflows/cmake-multi-platform.yml

@@ -25,11 +25,10 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         build_type: [Release]
-        c_compiler: [clang]
         include:
           - os: ubuntu-latest
-            c_compiler: clang
-            cpp_compiler: clang++
+            c_compiler: /usr/bin/clang-18
+            cpp_compiler: /usr/bin/clang++-18
 
     steps:
     - uses: actions/checkout@v4
@@ -40,10 +39,18 @@ jobs:
         sudo apt-get install -y wget lsb-release software-properties-common
         wget https://apt.llvm.org/llvm.sh
         chmod +x llvm.sh
-        sudo ./llvm.sh 16
-        sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-16 90
+        sudo ./llvm.sh 18
+        git clone --depth=1 https://github.com/llvm/llvm-project.git
+        cd llvm-project
+        git fetch --unshallow
+        mkdir build
+        cd build
+        cmake -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DLLVM_ENABLE_PROJECTS=clang -DCMAKE_BUILD_TYPE=Release -G "Unix Makefiles" ../llvm
+        make -j24
+        make install
+        sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-18 90
+        sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-18 90
         
-
     - name: Set reusable strings
       # Turn repeated input strings (such as the build output directory) into step outputs. These step outputs can be used throughout the workflow file.
       id: strings