Error:

Undefined symbol: _GPBClearOneof

Undefined symbol: _GULLogBasic

Undefined symbol: OBJC_CLASS$_GDTCORTransport

Undefined symbol: OBJC_CLASS$_GPBCodedOutputStream

Undefined symbol: OBJC_CLASS$_GPBDescriptor

Undefined symbol: OBJC_CLASS$_GPBEnumArray

Undefined symbol: OBJC_CLASS$_GPBEnumDescriptor

Undefined symbol: OBJC_CLASS$_GPBFileDescriptor

Undefined symbol: OBJC_CLASS$_GPBInt32Array

Undefined symbol: OBJC_CLASS$_GPBMessage

Undefined symbol: OBJC_CLASS$_GPBRootObject

Undefined symbol: OBJC_CLASS$_GTMLogMininumLevelFilter

Undefined symbol: OBJC_CLASS$_GTMLogger

Undefined symbol: OBJC_CLASS$_GTMSessionCookieStorage

Undefined symbol: OBJC_CLASS$_GTMSessionFetcher

Undefined symbol: OBJC_CLASS$_GTMSessionFetcherService

Undefined symbol: OBJC_CLASS$_GULCCComponent

Undefined symbol: OBJC_CLASS$_GULCCComponentContainer

Undefined symbol: OBJC_CLASS$_GULCCComponentType

Undefined symbol: OBJC_CLASS$_GULUserDefaults

Undefined symbol: OBJC_METACLASS$_GPBMessage

Undefined symbol: OBJC_METACLASS$_GPBRootObject

Undefined symbol: OBJC_METACLASS$_GTMLogger

Undefined symbol: _kGTMSessionFetcherStatusDomain

Linker command failed with exit code 1 (use -v to see invocation)