Flutter で pod install が失敗する [!] The 'Pods-Runner' target has transitive dependencies that include statically linked binaries

出力されているエラー

$ pod install
Analyzing dependencies
cloud_firestore: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
firebase_analytics: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
firebase_core: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
firebase_messaging: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
firebase_remote_config: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
Downloading dependencies
[!] The 'Pods-Runner' target has transitive dependencies that include statically linked binaries: (/path-to/ios/Flutter/Flutter.framework)

解決方法

今後実行するスクリプトは全てiosディレクトリ内で実行してください

$ cd ios

まずは更地に戻します

$ flutter clean
$ rm -rf Flutter/Flutter.framework Pods Podfile.lock

Podfileに追記します

# NOTE: For detail 👉 https://github.com/CocoaPods/CocoaPods/issues/3289
pre_install do |installer|
  Pod::Installer::Xcode::TargetValidator.send(:define_method, :verify_no_static_framework_transitive_dependencies) {}
end

パッケージを入れ直してビルドします

$ flutter pub get
$ flutter build ios
$ pod install

次のようなログが出ると成功です

$ pod install
Analyzing dependencies
cloud_firestore: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
firebase_analytics: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
firebase_core: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
firebase_messaging: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
firebase_remote_config: Using Firebase SDK version '6.33.0' defined in 'firebase_core'
Downloading dependencies
Generating Pods project
Integrating client project
Pod installation complete! There are 17 dependencies from the Podfile and 39 total pods installed.

間違った解決方法

use_frameworks! をコメントアウトする

普通にエラーになります

[!] The 'Pods-Runner' target has transitive dependencies that include static frameworks: (FirebaseCore, FirebaseDatabase, FirebaseMessaging, FirebaseDatabase, FirebaseCore, FirebaseMessaging, FirebaseMessaging, FirebaseCore, and FirebaseDatabase)

cf. https://github.com/flutter/flutter/issues/20045#issuecomment-409492211