Unable to build iOS in release mode

[LouisKraemer]

Hi,

When trying to build my iOS app in release mode I get the following error in XCode.

ld: Undefined symbols:
  _swift_stdlib_isStackAllocationSafe, referenced from:
      function signature specialization <Arg[0] = [Closure Propagated : closure #1 ((key: Swift.String, value: ExponeaSDK_Notifications.JSONValue)) -> Swift.Bool in ExponeaSDK_Notifications.NotificationData.properties.getter : Swift.Dictionary<Swift.String, ExponeaSDK_Notifications.JSONValue>, Argument Types : []> of generic specialization <Swift.String, ExponeaSDK_Notifications.JSONValue> of Swift._NativeDictionary.filter(((key: A, value: B)) throws -> Swift.Bool) throws -> Swift._NativeDictionary<A, B> in ExponeaSDK_Notifications[31](NotificationData+Properties.o)

RN version 0.70.9 react-native-exponea-sdk version 1.6.0

This did not happen before adding exponea to our app.

Any way I can give more info in order to fix this?

[adam1929]

Hi @LouisKraemer thank you for your reporting. Could you please check your ExponeaSDK-Notifications in Podfile/Podfile.lock? It should be same as ExponeaSDK - so 2.20.0. It seems that ExponeaSDK-Notifications version mismatched and is accessing "obsolete" code. Thank you for clarification

[LouisKraemer]

I have:

• ExponeaSDK: 2.16.4
• ExponeaSDK-Notifications: 2.18.0

What versions should they be?

[LouisKraemer]

This is the output with both pods manually set to 2.16.4

ld: Undefined symbols:
  _swift_stdlib_isStackAllocationSafe, referenced from:
      function signature specialization <Arg[0] = [Closure Propagated : closure #1 ((key: Swift.String, value: ExponeaSDK_Notifications.JSONValue)) -> Swift.Bool in ExponeaSDK_Notifications.NotificationData.properties.getter : Swift.Dictionary<Swift.String, ExponeaSDK_Notifications.JSONValue>, Argument Types : []> of generic specialization <Swift.String, ExponeaSDK_Notifications.JSONValue> of Swift._NativeDictionary.filter(((key: A, value: B)) throws -> Swift.Bool) throws -> Swift._NativeDictionary<A, B> in ExponeaSDK_Notifications[x86_64][30](NotificationData+Properties.o)

[adam1929]

Hi @LouisKraemer both ExponeaSDK and ExponeaSDK-Notifications has to be version of 2.20.0. Hard to tell, if manually set to 2.16.4 could help because of RN compilation cache BUT still it is old native iOS SDK that could not be compatible with RN SDK. It may depends on project setup, but I would try one of these steps:

1. pod update POD_NAME - For ExponeaSDK and ExponeaSDK-Notifications. Try to not touch any other framework to avoid other problems with cache
2. clean cache a. remote node_modules b. remove yarn/package.lock files c. remove Podfile.lock files d. clean your ~/Library/Developer/Xcode/DerivedData/* e. restart Metro with watchman watch-del-all and npm start -- --reset-cache f. I'm doing this during development phase lot of time because sometimes old swift builds are kept and makes unexpected failures

We were not facing such an issue but I think that there is some problem with old-version native framework or similar.

[LouisKraemer]

I understand clearing the cache but I would recommend against clearing the *.lock files. Those should not be regenerated from scratch on a existing project.

[adam1929]

@LouisKraemer Hi, were you able to update iOS SDK to latest version - 2.20.0? Does it fix your build problem? Thank you

[LouisKraemer]

Just managed to try it, it does fix our issue yes, thanks