Fix appleclang compiler exe in GH action and add clang dep

Author: asmelko

.github/workflows/build_binaries_cmake.yml

@@ -38,7 +38,7 @@ jobs:
             build_physiboss: "ON"
           - os: macos-latest
             c_compiler: cc
-            cpp_compiler: cc++
+            cpp_compiler: c++
             build_physiboss: "ON"
 
     steps:
@@ -51,6 +51,12 @@ jobs:
       run: |
         echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"
 
+    - name: Install dependencies (Linux)
+      if: runner.os == 'Linux'
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libomp-dev
+
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type