CI: Debugging the OpenMP_ROOT issue

Author: krivenko

.github/workflows/build-and-test-macos.yml

@@ -27,13 +27,9 @@ jobs:
 
     - name: Install dependencies
       run: |
-           brew install llvm@17 eigen fftw hdf5 open-mpi numpy scipy mpi4py
+           brew install llvm@17 libomp eigen fftw hdf5 open-mpi numpy scipy mpi4py
            pip install --user mako
 
-    - name: Set OpenMP_ROOT for Clang
-      if: startsWith(matrix.compiler.name, 'clang')
-      run: echo "OpenMP_ROOT=$(brew --prefix libomp)" >> $GITHUB_ENV
-
     - name: Cache Boost (a C++20 compatible version)
       id: cache-boost
       uses: actions/cache@v4