iOSのビルド時に"warning: double-quoted include"が出るときの対処法(Cocoapods 1.9.3)

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FlutterをiOSでビルドしようとしたとき、エラーが出た。
とりあえず現時点(2020/10/19)での解決法をメモしておく。

初期環境

  • Xcode 12.1
  • Cocoapods 1.9.3
  • Dart 2.10.0
  • Flutter 1.22.0
  • Bundler 2.1.4

以下エラー。

Xcode build done.                                           115.3s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **
Xcode's output:
↳
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBWrappers.pbobjc.m:11:
    /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h:34:9: warning: double-quoted include "GPBBootstrap.h" in framework header, expected angle-bracketed instead [-Wquoted-include-in-framework-header]
    #import "GPBBootstrap.h"
            ^~~~~~~~~~~~~~~~
            <GPBBootstrap.h>
    /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h:36:9: warning: double-quoted include "GPBDescriptor_PackagePrivate.h" in framework header, expected angle-bracketed instead [-Wquoted-include-in-framework-header]
    #import "GPBDescriptor_PackagePrivate.h"
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            <GPBDescriptor_PackagePrivate.h>
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBWrappers.pbobjc.m:11:
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h:36:
    /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBDescriptor_PackagePrivate.h:35:9: warning: double-quoted include "GPBDescriptor.h" in framework header, expected angle-bracketed instead [-Wquoted-include-in-framework-header]
    #import "GPBDescriptor.h"
            ^~~~~~~~~~~~~~~~~
            <GPBDescriptor.h>
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBWrappers.pbobjc.m:11:
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h:36:
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBDescriptor_PackagePrivate.h:35:
    /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBDescriptor.h:33:9: warning: double-quoted include "GPBRuntimeTypes.h" in framework header, expected angle-bracketed instead [-Wquoted-include-in-framework-header]
    #import "GPBRuntimeTypes.h"
            ^~~~~~~~~~~~~~~~~~~
            <GPBRuntimeTypes.h>
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBWrappers.pbobjc.m:11:
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h:36:
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBDescriptor_PackagePrivate.h:35:
    In file included from /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBDescriptor.h:33:

どうも、Xcode12からはimportにdouble-quoteは使えなくなった様。
https://developer.apple.com/forums/thread/651941

ただ、ライブラリ側が対応できていないものが多いので、Xcode上で無効にする。
https://developer.apple.com/forums/thread/651941?answerId=617655022#617655022

この後、AndroidStudioでiOS向けにビルドすると、再度エラーが起こったので File -> Invalidate Caches / Restart ... でAndroidStudioを再起動した。

CI上での設定

ローカルでビルドすることはできたが、CI上でビルドしようとすると同様のエラーが発生した。

CIを使うときは、Preview版のCocoapodsを使うとできたぞと書かれていたので設定する。

If you're getting this locally, upgrade CocoaPods. If your CI is getting this error, force the CocoaPods version to 1.10.0.rc.1.

// 前略
      before_install:
        - gem uninstall -ax cocoapods             # <- 追加
        - gem install cocoapods -v 1.10.0.rc.1    # <- 追加
        - bundle install
        - npm install -g firebase-tools
// 後略

ビルドできなかった。

Xcode build done.                                           113.7s
Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **
Xcode's output:
↳
    error: the following command failed with exit code 0 but produced no further output
    CompileC /Users/travis/Library/Developer/Xcode/DerivedData/Runner-hdibzqvbombrjjhkjascueuffcef/Build/Intermediates.noindex/Pods.build/Release-Develop-iphoneos/Protobuf.build/Objects-normal/armv7/GPBWrappers.pbobjc.o /Users/travis/build/Cookbiz/wakumin-app/ios/Pods/Protobuf/objectivec/GPBWrappers.pbobjc.m normal armv7 objective-c com.apple.compilers.llvm.clang.1_0.compiler

cocoapodsのバージョンを上げたのになぁと思って、上の方を見ると、、、

$ bundle install
Fetching gem metadata from https://rubygems.org/........

...中略...

Fetching cocoapods 1.9.3
Installing cocoapods 1.9.3
Using colored 1.2

あー・・・・・・。bundleか・・・・・・。
このプロジェクトはfastlaneを使っていて、bundle install をしているのでした。
ビルドに使われるpodは多分こっちになったのかな。

ということで、

source "https://rubygems.org"

gem "fastlane"
gem 'cocoapods', "1.10.0.rc.1"  <= ここを指定

plugins_path = File.join(File.dirname(__FILE__), 'fastlane', 'Pluginfile')
eval_gemfile(plugins_path) if File.exist?(plugins_path)

としてもう一度走らせると、、、

Running pod install...                                            214.8s (!)
Running Xcode build...                                          
 └─Compiling, linking and signing...                        60.2s
Xcode build done.                                           561.4s

無事CIビルドができた

＜追記＞
cocoapods 1.10.0が出ているので、gemを修正。

source "https://rubygems.org"

gem "fastlane"
gem 'cocoapods', "1.10.0"  <= ここを指定

plugins_path = File.join(File.dirname(__FILE__), 'fastlane', 'Pluginfile')
eval_gemfile(plugins_path) if File.exist?(plugins_path)

補記

それはそうとこのビルド時間なんとかならないのか・・・・・・。
FlutterビルドとFastlaneビルド合わせて25分くらいビルドしている・・・・・。