 
 
 
 
 
 
 
  
cl_build. In the case of failure you should
    free the memory occupied by the engine with cl_free:
    int cl_build(struct cl_engine *engine); void cl_free(struct cl_engine *engine);In our example:
	if((ret = cl_build(engine))) {
	    printf("cl_build() error: %s\n", cl_strerror(ret));
	    cl_free(engine);
	    exit(1);
	}