发生体系结构错误的未定义符号

Question

I got error when debugging iOS application and am stuck all day.

What I did is:

1. install OAuth2Client library via cocoapods.
2. create viewcontroller to show google login page.
3. got the following error when debugging.

Undefined symbols for architecture arm64: "_OBJC_CLASS_$_NXOAuth2Request", referenced from: objc-class-ref in GXLoginGoogleViewController.o "_OBJC_CLASS_$_NXOAuth2AccountStore", referenced from: objc-class-ref in GXLoginGoogleViewController.o "_NXOAuth2AccountStoreErrorKey", referenced from: ___54-[GXLoginGoogleViewController setupOAuth2AccountStore]_block_invoke60 in GXLoginGoogleViewController.o "_NXOAuth2AccountStoreAccountsDidChangeNotification", referenced from: -[GXLoginGoogleViewController setupOAuth2AccountStore] in GXLoginGoogleViewController.o "_NXOAuth2AccountStoreDidFailToRequestAccessNotification", referenced from: -[GXLoginGoogleViewController setupOAuth2AccountStore] in GXLoginGoogleViewController.o ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

I have already searched many similar topics but I could not resolved yet.

Can anyone suggest any direction to solve this problem?

Answer 1

So when I downloaded the project from github , the first thing I noticed was that the project settings weren't set up very intuitively:

The "$" in the Target's Architecture column should be switched to specify iOS Standard Architectures:

And at that point you should be able to build and run on the device. If you want to support the simulator as well, you'll need to add in " i386 " as an architecture.