how to call awakeFromNib method inside View Controller (method that gets called before viewDidLoad, mostly used for geometry changes)

awakeFromNib

// the following class inherits from UIViewController

@implementation MyCustomViewController

- (void)setup
{
  // initialization that can't wait until viewDidLoad
}

- (void)awakeFromNib
{
  [self setup];
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
  self = [super initWithNibName:nibNameOrNil  bundle:nibBundleOrNil];
  [self setup];
  return self;
}