Changing windows mex code to Mac mex code

I have the following lines of code in windows and linux format but I want to change them to mac format what should this look like? I have downloaded xcode.

if ispc
    % windows platform, MSVC compiler
    mex COMPFLAGS="$COMPFLAGS /openmp"  -largeArrayDims -v count_subsets.cpp
    mex COMPFLAGS="$COMPFLAGS /openmp" -largeArrayDims -v is_subset.cpp
    mex COMPFLAGS="$COMPFLAGS /openmp"  -largeArrayDims -v adjacency_test_pattern_tree_C.cpp
    mex COMPFLAGS="$COMPFLAGS /openmp"  -largeArrayDims -v prune_candidates_rank_pattern_tree_C.cpp
    
    mex calculate_fraction.c        
    mex flush_file_cache.cpp
    
    elseif isunix
    % unix platform, GCC compiler
    mex  CXXFLAGS="\$CXXFLAGS -fopenmp" LDFLAGS="\$LDFLAGS -fopenmp" -largeArrayDims -v count_subsets.cpp
    mex CXXFLAGS="\$CXXFLAGS -fopenmp" LDFLAGS="\$LDFLAGS -fopenmp" -largeArrayDims -v is_subset.cpp
    mex CXXFLAGS="\$CXXFLAGS -mpopcnt -fopenmp" LDFLAGS="\$LDFLAGS -mpopcnt -fopenmp" -largeArrayDims -v prune_candidates_rank_pattern_tree_C.cpp
    mex  CXXFLAGS="\$CXXFLAGS -fopenmp" LDFLAGS="\$LDFLAGS -fopenmp" -largeArrayDims -v adjacency_test_pattern_tree_C.cpp
    
    mex calculate_fraction.c
    mex flush_file_cache.cpp