Flutter app development tutorials by Andrea Bizzotto

How to speed-up Cloud Firestore Xcode builds on your Flutter apps

One long-standing issue with Cloud Firestore is that Flutter Xcode builds take a long time, especially on CI environments. This is because the Firestore iOS depends on 500k lines of mostly C++ code, that are compiled from scratch as part of the Xcode build.

Fortunately, a solution is now available and documented here:

To speed up your build times, you can use invertase/firestore-ios-sdk-frameworks, which contains precompiled Firestore iOS SDKs extracted from the Firebase iOS SDK release downloads.

To take advantage of this, add this line inside your target 'Runner' do block in your Podfile:

# ...
target 'Runner' do
  pod 'FirebaseFirestore', :git => 'https://github.com/invertase/firestore-ios-sdk-frameworks.git', :tag => '6.26.0'

# ...

Note: the first time you try this, you may get this error log:

[!] CocoaPods could not find compatible versions for pod "FirebaseFirestore":
    In snapshot (Podfile.lock):
      FirebaseFirestore (= 1.11.2, ~> 1.11.2)
    In Podfile:
      FirebaseFirestore (from `https://github.com/invertase/firestore-ios-sdk-frameworks.git`, tag `6.26.0`)
  None of your spec sources contain a spec satisfying the dependencies: `FirebaseFirestore (from `https://github.com/invertase/firestore-ios-sdk-frameworks.git`, tag `6.26.0`), FirebaseFirestore (= 1.11.2, ~> 1.11.2)`.
  You have either:
   * out-of-date source repos which you can update with `pod repo update` or with `pod install --repo-update`.
   * mistyped the name or version.
   * not added the source repo that hosts the Podspec to your Podfile.

This is solved by removing ios/Podfile.lock and rebuilding.

You're welcome! 😎

Want more?

Support my work and fast-track your Flutter learning with my in-depth courses.