text: #if __APPLE__
  #include <OpenCL/cl.h>
  #else
  #include <CL/cl.h>
  #endif
  
  int main()
  {
      cl_platform_id platform_id = NULL;
      cl_uint ret_num_platforms;
  
      clGetPlatformIDs(1, &platform_id, &ret_num_platforms);
      return 0;
  }
  
  
  
  