Updating from GoogleSignIn iOS SDK 5.0.1 from 5.0.0 is failing to link with Xcode 10.3 toolchain.
ld: could not reparse object file in bitcode bundle: 'Invalid bitcode version (Producer: '1100.0.33.8.0_0' Reader: '1001.0.46.4_0')', using libLTO version 'LLVM version 10.0.1, (clang-1001.0.46.4)' for architecture armv7
Producer 1100.. I assume is due to being compiled with Xcode 11 toolchain? Is this intentional to force use of Xcode 11? For now have reverted to 5.0.0.