I'm afraid you already found all the resources I can offer you. Currently there is no solution for this in place and I also do not have any information on when this problem is going to be tackled.
So I'm sorry to say this will remain an open problem for now.
Installing Wikitude in a project with GVRSDK CocoaPod crashes GVRSDK.
Looking in this forum and at StackOverflow I see other people have had similar issues, eg: