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#ifndef SINGA_UTILS_OPENCL_UTILS_H_
#define SINGA_UTILS_OPENCL_UTILS_H_

#ifdef USE_OPENCL

#define CL_USE_DEPRECATED_OPENCL_1_2_APIS

#define CL_HPP_MINIMUM_OPENCL_VERSION 120
#define CL_HPP_TARGET_OPENCL_VERSION 120

#ifndef VIENNACL_WITH_OPENCL
#define VIENNACL_WITH_OPENCL
#endif

#ifndef __APPLE__
#include "CL/cl.h"
#else
#include "OpenCL/cl.h"
#endif

#include <viennacl/backend/opencl.hpp>
#include <viennacl/ocl/backend.hpp>
#include <viennacl/ocl/device.hpp>
#include <viennacl/ocl/device_utils.hpp>
#include <viennacl/ocl/kernel.hpp>
#include <viennacl/ocl/platform.hpp>
#include <viennacl/ocl/program.hpp>
#include <viennacl/ocl/utils.hpp>

inline viennacl::ocl::handle<cl_mem> WrapHandle(cl_mem in,
                                                viennacl::ocl::context &ctx) {
  if (in != nullptr) {
    viennacl::ocl::handle<cl_mem> memhandle(in, ctx);
    memhandle.inc();
    return memhandle;
  } else {
    cl_int err;
    cl_mem dummy =
        clCreateBuffer(ctx.handle().get(), CL_MEM_READ_WRITE, 0, nullptr, &err);
    viennacl::ocl::handle<cl_mem> memhandle(dummy, ctx);
    return memhandle;
  }
}

#endif  // USE_OPENCL

#endif  // SINGA_UTILS_OPENCL_UTILS_H_