I've tried importing 2 of the sample projects into xcode generated via 'forceios create samples'. They both have the same 5 errors when I try to build the project.

Here's an example of one: 
Apple Mach-O Linker Error "_OBJC_CLASS_$_SFKeyStoreManager", referenced from:

objc-class-ref in libSalesforceOAuth.a(SFOAuthCredentials.o)

It then has several very similiar ones for SFPasscodeManager, SFSDKCryptoUtils, _kSFPassCodeProviderPBKDF2, and the last is Linker command failed with excit code 1.

Any suggestions on how to fix this? I've tried removing and re-adding the www folder as suggested in a read.me file.

I've tried importing 2 of the sample projects into xcode generated via 'forceios create samples'. They both have the same 5 errors when I try to build the project.

Here's an example of one: 
Apple Mach-O Linker Error "_OBJC_CLASS_$_SFKeyStoreManager", referenced from:

objc-class-ref in libSalesforceOAuth.a(SFOAuthCredentials.o)

It then has several very similiar ones for SFPasscodeManager, SFSDKCryptoUtils, _kSFPassCodeProviderPBKDF2, and the last is Linker command failed with excit code 1.

Any suggestions on how to fix this? I've tried removing and re-adding the www folder as suggested in a read.me file.