Firebase react-native iOS build fails with "-fobjc-weak is not supported on the current deployment target"

Question

If I try to run my react-native app from XCode, xcode fails with the message:

-fobjc-weak is not supported on the current deployment target

If I run from a shell react-native run-ios, then I get also an error message:

** BUILD FAILED **

The following build commands failed: CompileC /Users/michel/Development/Androdev/Firebase/Sample/FlightLogIos/ios/build/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/nanopb.build/Objects-normal/x86_64/nanopb-dummy.o Target\ Support\ Files/nanopb/nanopb-dummy.m normal x86_64 objective-c com.apple.compilers.llvm.clang.1_0.compiler

(1 failure)

However, the app still runs. It is annoying though as I think I will have at some point to do some Objective C code for my project. Does anybody know how to resolve this issue?

Answer 1

I'm using Firebase in a regular, non-react-native Xcode project. I had the same error when building nanopb target. When I checked settings, deployment target for nanopb was set to 4.3. Just updating it to something more recent, like 9.0 fixed this error for me.

Answer 2

i just ran into the same problem. i fixed it for me by increasing the ios deployment target of the nanopb target to iOS 8.0 (its 4.3 per default). Pods Project -> target: nanopb -> iOS Deployment Target: iOS 8.0