Update to Xcode 12 - Build Errors

[kubilaykiymaci]

react-native version: 0.62.2

react-native-pdf: 6.1.1 now but i've tried 6.20

rn-fetch-blob: 0.12.0

What platform does your issue occur on? : IOS - Xcode 12

After we updated xcode version to 12 for ios14 support, we couldn't build our app. There is 4 build errors which about react-native-pdf.

Error Messages like these:

Undefined symbols:
OBJC_CLASS$_RCTEventManager
OBJC_METACLASS$_RCTViewManager
_RCTErrorUnspecified
_RCTRegisterModule

Undefined symbols for architecture x86_64

[canSenel]

Same here

[gokhandoslu]

It will be fixed in CocoaPods version 1.10.
issue: CocoaPods/CocoaPods#9902
change log: https://github.com/CocoaPods/CocoaPods/releases/tag/1.10.0.beta.1

[kubilaykiymaci]

it doesn't work, maybe it's about beta version.

when i unchecked Parallelize Build option, it was built successfully.

https://stackoverflow.com/a/41488258/456588

[gokhandoslu]

The issue was resolved by PR #509.