Update ci.yml

.github/workflows/ci.yml

@@ -462,7 +462,14 @@ jobs:
           cmake --build . --target clang clang-repl --parallel ${{ env.ncpus }}
         fi
         cd ../../
-        cp -r -v ./llvm-project/ ./cppyy-backend/
+        
+        OS=$(uname -s)
+        if [[ "$OS" == "Darwin" ]]; then
+          mkdir ./cppyy-backend/llvm-project/
+          cp -r ./llvm-project/ ./cppyy-backend/llvm-project/
+        else
+          cp ./llvm-project/ ./cppyy-backend/
+        fi
         echo "Copy llvm-project folder to cppyy-backend for caching"
 
     - name: Build LLVM/Cling on Windows systems if the cache is invalid
@@ -557,6 +564,15 @@ jobs:
         LLVM_BUILD_DIR="$(pwd)/llvm-project/build"
         cling_on=$(echo "${{ matrix.cling }}" | tr '[:lower:]' '[:upper:]')
         if [[ "${cling_on}" == "ON" ]]; then
+
+          FIXME: Currently Cling directory not found if using cache, so cloning again, until reason why is found.
+          if [[ steps.cache.outputs.cache-hit == 'true' ]]; then
+            git clone https://github.com/root-project/cling.git
+            cd ./cling 
+            git checkout tags/v${{ matrix.cling-version }}
+            cd ..
+          fi
+          
           CLING_DIR="$(pwd)/cling"
           CLING_BUILD_DIR="$(pwd)/cling/build"
           CPLUS_INCLUDE_PATH="${CLING_DIR}/tools/cling/include:${CLING_BUILD_DIR}/include:${LLVM_DIR}/llvm/include:${LLVM_DIR}/clang/include:${LLVM_BUILD_DIR}/include:${LLVM_BUILD_DIR}/tools/clang/include:$PWD/include"