Library not found for -lGTMSessionFetcher

问题

Unity 5.6.2, Firebase Unity SDK 4.0.3, Cocoapod 1.3.1 I added Firebase Auth package to Unity Project and Android works fine. But when I run the same project on iOs, build in Unity runs fine, but fails in XCode during compilation

ld: library not found for -lGTMSessionFetcher clang: error: linker command failed with exit code 1 

Any ideas how to fix it?

I've tried to add Firebase Auth form Unity SDK 4.1.0, but Unity started to fail due to:

iOS framework addition failed due to a Cocoapods installation failure.
Specs satisfying the 'Firebase/DynamicLinks (=4.0.4)' dependency were found, but they required a higher minimum deployment target

pod spec cat DynamicLinks output

"platforms": {
   "ios": "7.0"
}

and I have 9.0 in my Unity project

回答1:

This error happens when you open .xcodeproj instead of .xcworkspace.

as mentioned here

来源：https://stackoverflow.com/questions/45858482/library-not-found-for-lgtmsessionfetcher