Crashlytics watchOS via SPM: ld warnings

[weakfl]

Even though I've added a platform condition:

#if canImport(Firebase)
import Firebase
#endif

I'm getting a bunch of ld warnings when building for an actual device:

ld: warning: object file ([...]/Build/Products/Debug-watchos/FirebaseCrashlytics.o) was built for newer watchOS version (7.0) than being linked (4.3)
ld: warning: object file ([...]/Build/Products/Debug-watchos/GoogleDataTransport.o) was built for newer watchOS version (6.0) than being linked (4.3)
ld: warning: object file ([...]/Build/Products/Debug-watchos/Firebase.o) was built for newer watchOS version (7.0) than being linked (4.3)
ld: warning: object file ([...]/Build/Products/Debug-watchos/GoogleUtilities_Environment.o) was built for newer watchOS version (6.0) than being linked (4.3)
ld: warning: object file ([...]/Build/Products/Debug-watchos/GoogleUtilities_Logger.o) was built for newer watchOS version (6.0) than being linked (4.3)
ld: warning: object file ([...]/Build/Products/Debug-watchos/FirebaseCoreDiagnostics.o) was built for newer watchOS version (7.0) than being linked (4.3)
ld: warning: object file ([...]/Build/Products/Debug-watchos/FirebaseCore.o) was built for newer watchOS version (7.0) than being linked (4.3)
ld: warning: object file ([...]/Build/Products/Debug-watchos/GoogleUtilities_UserDefaults.o) was built for newer watchOS version (6.0) than being linked (4.3)
ld: warning: object file ([...]/Build/Products/Debug-watchos/FirebaseInstallations.o) was built for newer watchOS version (7.0) than being linked (4.3)

The only way to get rid of the warnings is to add -w to the Other Linker Flags build setting of the watch extension.

I'm wondering if this is the right approach and if I should be worried about the warnings?

@paulb777 Maybe you can chime in?

[paulb777]

Based on the messages, the watch target is being build for 4.3, but Firebase requires a minimum of 7.0.

[weakfl]

It is. I was just wondering why the package gets linked for older watchOS versions at all.