I updated my “FileMaker iOS App SDK + Swift AppDelegate” walkthrough for Xcode 11. For those familiar with this walkthrough from the old Community, you may remember that (starting with Xcode 10) the command line utility otool is no longer available, rendering my original walkthrough effecitvely useless.
The new walkthrough uses objdump and covers some additional steps regarding the Bridging Header. Check it out. 
https://github.com/starsite/SwiftFM/blob/master/FIAS-Swift-AppDelegate-walkthrough.md