va_args for C11

#define FL_ARG_COUNT(...) FL_INTERNAL_ARG_COUNT_PRIVATE(0, ##__VA_ARGS__, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
#define FL_INTERNAL_ARG_COUNT_PRIVATE(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, N, ...) N

#define FL_CONCAT_(l,r) l ## r
#define FL_CONCAT(l,r) FL_CONCAT_(l,r)

extern VkImageView _createImageView(VkDevice device, VkImage image, VkFormat format, VkImageAspectFlags aspectFlags);

#define _CREATE_IMAGE_VIEW_1(DEV,IMG)           _createImageView(DEV,IMG,VK_FORMAT_R8G8B8A8_SRGB,VK_IMAGE_ASPECT_COLOR_BIT)
#define _CREATE_IMAGE_VIEW_2(DEV,IMG, fmt)      _createImageView(DEV,IMG,fmt,VK_IMAGE_ASPECT_COLOR_BIT)
#define _CREATE_IMAGE_VIEW_3(DEV,IMG, fmt, asp) _createImageView(DEV,IMG,fmt,asp)

#define DEFAULT_CREATE_IMAGE_VIEW(D,I,...) FL_CONCAT(_CREATE_IMAGE_VIEW_,FL_ARG_COUNT(,##__VA_ARGS__))(D,I,##__VA_ARGS__)
#define createImageView(D,I,...) DEFAULT_CREATE_IMAGE_VIEW(D,I,##__VA_ARGS__)

...
  app->textureImageView = createImageView(app->device, app->textureImage);
  ...
  app->depthImageView = createImageView(app->device, app->depthImage, depthFormat, VK_IMAGE_ASPECT_DEPTH_BIT);
...

  app->swapChainImageViews[i] = createImageView(app->device, app->swapChainImages[i], app->swapChainImageFormat);

gcc -std=c11 ...