Size classes iOS 7 compatibility issue

I am trying to use auto layout to to position two views like below picture. I know that with iOS 8 and size classes I can create layout for different layouts and it would work. However I am targeting iOS 7 and according to several posts such as http://ift.tt/1F3OuuT, iPhone landscape mode of size classes will not work for earlier version. So, how can I position those two views on different orientation according to my picture? Thanks.