MacBook Pro 2016 No AMD device found
Today I compiled the latest version of source code using cmake (run `cmake .` then `make`). When I run the executable, it tells me No AMD device found. Here is a log:

`bogon:~ tomshen$ xmrig-amd -o stratum+tcp://uspool.electroneum.com:3333 -u etnkJhfiquhGsk56httfGUg4uYRiTSwrCMSnob4EBWc8bfYXaquKmLJRhPoRGVnTDUDJRJfvPuP2HNFXhoNYFpUV5EYhutC5Rq -p x --opencl-platform 0
 * VERSIONS:     XMRig/2.4.3-beta2 libuv/1.15.0 OpenCL/1.2 clang/9.0.0
 * CPU:          Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz x64 AES-NI
 * ALGO:         cryptonight, donate=5%
 * POOL #1:      uspool.electroneum.com:3333
 * COMMANDS:     hashrate, pause, resume
[2018-01-07 18:12:10] compiling code and initializing GPUs. This will take a while...
[2018-01-07 18:12:10] No AMD device found.
[2018-01-07 18:12:10] Failed to start threads`

The AMD card in my Mac is `AMD Radeon Pro 455 2GB`. macOS 10.13.2
  