please visit http://www.glbasic.com/forum/index.php?topic=10082.0 for the general debate about that requirement.
Since this is now a requirements and glbasic dosent do it, then im will call its a bug or a missing feature.
Here is a screenshot what it happens:
(https://dl.dropboxusercontent.com/u/3236515/glbasic/64bitfails.png)
Since its from feb 2015 is a requirements for submitting AppStore, this is a highy important issue right now!!! Hopefully the O files will get recompiled using newer tools with arm64 support.
PS. The landscape swap x/y IS possible to do a work around fix and Apple even accecpted my apps, so its NO longer a important issue on that one.