When I add a ".a" file which includes opencv.framework,Xcode encountered such compile errors:

[![enter image description here](https://i.stack.imgur.com/EUPby.png)](https://i.stack.imgur.com/EUPby.png)

I am pretty sure opencv.framework is there,and I am using opencv 3.1,it should already support arm64. But why does it keep complaining about this? How can I fix it? Thanks a lot.

lipo - info shows following information:
Architectures in the fat file: /Users/Fumin/libVisageWrapper.a are: armv7 i386 x86\_64 arm64