added support of OpenMP (via brew)

Author: treegardel

.github/workflows/testMacOS.yaml

@@ -3,12 +3,12 @@ name: testMacOS
 on:
   push:
     branches:
-      - '**'     # Run on all branches
+      - '**' # Run on all branches
     tags-ignore:
-      - 'v*'     # Ignore tag pushes matching 'v*'
+      - 'v*' # Ignore tag pushes like v1.2.3
   pull_request:
     branches:
-      - '**'     # Run for all pull requests
+      - '**'
 
 env:
   BUILD_TYPE: Release
@@ -21,18 +21,29 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          submodules: 'recursive'
+          submodules: recursive
 
       - name: Install dependencies (Homebrew)
         run: |
           brew update
-          brew install cmake boost gtk+3 hdf5
+          brew install cmake boost gtk+3 hdf5 libomp
 
-      - name: Configure CMake
-        run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DRAYX_WERROR=ON -DRAYX_REQUIRE_CUDA=OFF
+      - name: Configure CMake with OpenMP support
+        env:
+          LDFLAGS: "-L/opt/homebrew/opt/libomp/lib"
+          CPPFLAGS: "-I/opt/homebrew/opt/libomp/include"
+        run: |
+          cmake -B build \
+            -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} \
+            -DRAYX_WERROR=ON \
+            -DRAYX_REQUIRE_CUDA=OFF \
+            -DCMAKE_CXX_COMPILER="$(which clang++)" \
+            -DCMAKE_CXX_FLAGS="-Xpreprocessor -fopenmp -I/opt/homebrew/opt/libomp/include" \
+            -DCMAKE_EXE_LINKER_FLAGS="-L/opt/homebrew/opt/libomp/lib -lomp"
 
       - name: Build
-        run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+        run: |
+          cmake --build build --config ${{env.BUILD_TYPE}}
 
       - name: Run
         working-directory: ${{github.workspace}}