问题
I am trying to use openmp with Apple clang but can't make it work. I did download and compile the openmp library from llvm. My problem is that clang doesn't recognize the -fopenmp flag. I get the following error:
clang: error: unsupported option '-fopenmp'
I have version 8 of Xcode and clang. Any help would be much appreciated.
回答1:
From what I learned so far is that clang that comes with xcode does not support openmp. Also, the versions are different. So clang that comes with xcode 8 has version 8...
The best solution I have found so far is to install clang using homebrew: brew install llvm --with-clang. Right now I got version 3.9.0 and it does support openmp, so it solves my problem.
来源：https://stackoverflow.com/questions/40095958/apple-clang-fopenmp-not-working