Testing for OpenCL compatibility (MacOS)

dumpcl.c

//
// James @ http://stackoverflow.com/questions/7892955/how-can-i-test-for-opencl-compability
//

// clang -framework OpenCL dumpcl.c -o dumpcl && ./dumpcl

#include <stdio.h>
#include <stdlib.h>
#include <OpenCL/opencl.h>

int main(int argc, char* const argv[]) {
    cl_uint num_devices, i;
    clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, 0, NULL, &num_devices);

    cl_device_id* devices = calloc(sizeof(cl_device_id), num_devices);
    clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, num_devices, devices, NULL);

    char buf[128];
    for (i = 0; i < num_devices; i++) {
        clGetDeviceInfo(devices[i], CL_DEVICE_NAME, 128, buf, NULL);
        fprintf(stdout, "Device %s supports ", buf);

        clGetDeviceInfo(devices[i], CL_DEVICE_VERSION, 128, buf, NULL);
        fprintf(stdout, "%s\n", buf);
    }

    free(devices);
}

// Output - Mac mini (Late 2012):
  Device Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz supports OpenCL 1.2 
  Device HD Graphics 4000 supports OpenCL 1.2