I've receive the a unity game project, which might need to integrate in our future app. the source is base on Xcode 9 & swift 4, when I try to build, I've got this Apple Mach-O Link Error as in the follow picture :
Solutions that I've try:
1.change build setting -> Architectures to armv7 and build active architecture YES. but it doesn't work.
- change build setting -> Architectures to standard architecture. and YES to Build Active Architecture Only for DEBUG
3.try to add libiPhone-lib.a in the Link Binary With Libraries. it doesn't work neither.
4.try to add libil2cpp folder in project, it doesn't work neither.
I have no idea about those error and no experience on develop unity project, Please let me know if you have any idea. Screenshot of error: