I can't find the omp found in Xcode. H file, according to the network install LLVM tutorial, found that does not solve, the main problem is my/usr/local/opt/LLVM/lib/find ibiomp5. Dylib)... Wonder how bosses on Xcode support openMP?
Has now been solved, the main reference to http://antonmenshov.com/2017/09/09/clang-openmp-setup-in-xcode/here
The Index changes need to be paid attention to the Build Settings - While - Building set of Functionality (from here)
Another heavy is the latest version of the LLVM. There is no libiomp5 dylib. So the last step to add libiomp dylib can replace,