gRPC-Core Compile Errors - Apple Mach-O Linker Error after Swift 4/Xcode 9 Update

user_7984040 0
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After updating to Xcode 9.1 from 8.3.3 a project I am working on has multiple errors stemming from gRPC-Core bundled with Firebase. The errors make no sense whatsoever (to me at least) and I have tried all the usual fixes (removing pods, reinstalled, pod update, clean, build, delete derived data, etc). Cocoapods version is 1.3.1

gRPC errors

Pods being used in the project (everything working fine before update, no other errors from other pods).

  pod 'Firebase/Core'
  pod 'Firebase/Messaging'
  pod 'Firebase/Firestore'
  pod 'FirebaseUI/Firestore', '~> 4.0'
  pod 'FirebaseUI/Storage', '~> 4.0'
  pod 'FirebaseUI/Auth', '~> 4.0'
  pod 'FirebaseUI/Facebook', '~> 4.0'
  pod 'FirebaseUI/Google', '~> 4.0'
  pod 'UITextField+Shake', '~> 1.1'
  pod 'SJFluidSegmentedControl', :git => 'https://github.com/adornoventura/SJFluidSegmentedControl.git'
  pod 'GoogleBooksApiClient'
  pod 'Kingfisher', '~> 4.0'
  pod 'BarcodeScanner'
  pod 'GooglePlaces'
  pod 'GooglePlacePicker'
  pod 'Stripe'
  pod 'Lightbox'
  pod 'SwipeCellKit'

Edit: To those with the same problem, this issue is being tracked here: https://github.com/firebase/firebase-ios-sdk/issues/423 and it stems from the Firestore pod.

xcode9 swift4 cocoapods firebase ios
2 Answers

gRPC Team fixed this issue with the release of pod version 1.7.1. To anyone with this problem, clear your pod cache (pod cache clean) then do a fresh install to get the latest version!

user_79840400

I have the same problem. I guess there is a problem with the gRPC-core and a link is missing..

when I am not mistaken, it is used from Firestore and I guess it is since the last update from gRPC-Core

i only have

pod 'Firebase/Core' pod 'FirebaseUI/Auth' pod 'Firebase/Firestore'

developers posted following on Github:

Looks like an issue in gRPC-Core. For the time being you can work around this by putting

pod 'gRPC', 1.6.5 at the top of your Podfile.

user_54912660
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