CocoaPods installed but not working.

Question

実現したいこと

• Flutterの環境構築

前提

ここの通りに構築していました。

発生している問題・エラーメッセージ

flutter doctorを打つと以下のようなメッセージが出力されます。

[✓] Flutter (Channel stable, 3.16.5, on macOS 14.0 23A344 darwin-arm64, locale ja-JP)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[!] Xcode - develop for iOS and macOS (Xcode 15.1)
    ✗ CocoaPods installed but not working.
        You appear to have CocoaPods installed but it is not working.
        This can happen if the version of Ruby that CocoaPods was installed with is different
        from the one being used to invoke it.
        This can usually be fixed by re-installing CocoaPods.
      To re-install see https://guides.cocoapods.org/using/getting-started.html#installation for
      instructions.
[✓] Chrome - develop for the web
[✓] Android Studio (version 2022.3)
[✓] VS Code (version 1.84.2)
[✓] Connected device (2 available)
[✓] Network resources

試したこと

案内されたURLでインストールし直す:

% sudo gem install cocoapods
Password:
Successfully installed cocoapods-1.14.3
Parsing documentation for cocoapods-1.14.3
Done installing documentation for cocoapods after 0 seconds
1 gem installed

効果なし。

homebrewを用いてインストール:

% brew install cocoapods                               
==> Downloading https://formulae.brew.sh/api/formula.jws.json

==> Downloading https://formulae.brew.sh/api/cask.jws.json

Warning: Treating cocoapods as a formula. For the cask, use homebrew/cask/cocoapods
Warning: cocoapods 1.14.3 is already installed and up-to-date.
To reinstall 1.14.3, run:
  brew reinstall cocoapods

効果なし。

pod setupしてみる:

[BUG] Segmentation fault at 0x0000000029326620
ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [-darwin23]

-- Crash Report log information --------------------------------------------
   See Crash Report log file under the one of following:                    
     * ~/Library/Logs/DiagnosticReports                                     
     * /Library/Logs/DiagnosticReports                                      
   for more details.                                                        
Don't forget to include the above Crash Report log file in bug reports. 
...
zsh: abort      pod setup    

クラッシュしました。クラッシュレポートは長いので割愛します。当然効果なし。

補足情報（FW/ツールのバージョンなど）

OS: macOS Sonoma Ver.14.0
chip: Apple M2

Answer 1

ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [-darwin23]

rubyが古すぎませんか？
おそらくMacOS標準の古いrubyを利用しているのでしょう。
homebrewやrbenvで新しいrubyをインストールしてください。

% ruby -v
ruby 3.2.2 (2023-03-30 revision e51014f9c0) [arm64-darwin22]

% pod --version
1.14.3

% pod setup
Setup completed

Comments

[owoKNowo]

[ここ](https://zenn.dev/blendthink/articles/f0964e3642d33b)に基づいてrbenvを利用してダウンロードしました:
```
% rbenv versions
system
* 3.2.2 (set by /Users/username/.ruby-version)
```
が、認識できていないようです:
```
% ruby -v
ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [-darwin23]
% ruby --version
ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [-darwin23]
```
rvmでinstallしたものしか認識できていないようです。しかし、ならばとrvmを利用するとエラーが起きます。
```
% rvm install 3.2.2
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/14.0/arm64/ruby-3.2.2.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Checking requirements for osx.
Certificates bundle '/opt/homebrew/etc/openssl@1.1/cert.pem' is already up to date.
Requirements installation successful.
Installing Ruby from source to: /Users/username/.rvm/rubies/ruby-3.2.2, this may take a while depending on your cpu(s)...
ruby-3.2.2 - #downloading ruby-3.2.2, this may take a while depending on your connection...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 19.5M 100 19.5M 0 0 9144k 0 0:00:02 0:00:02 --:--:-- 9155k
No checksum for downloaded archive, recording checksum in user configuration.
ruby-3.2.2 - #extracting ruby-3.2.2 to /Users/username/.rvm/src/ruby-3.2.2 - please wait
ruby-3.2.2 - #configuring - please wait
ruby-3.2.2 - #post-configuration - please wait
ruby-3.2.2 - #compiling - please wait
Error running '__rvm_make -j8',
please read /Users/username/.rvm/log/1703462104_ruby-3.2.2/make.log

There has been an error while running make. Halting the installation.
```

[technocore]

＞が、認識できていないようです:

rbenvを有効にするための設定をしていないからです。

[owoKNowo]

`rbenv init`からやり直してrubyのバージョンを最新にすることはできました:
```
% ruby -v
ruby 3.2.2 (2023-03-30 revision e51014f9c0) [arm64-darwin23]
```
その後、`sudo gem install cocoapods`を実行しましたが、解決せずでした:
```
% flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.16.5, on macOS 14.0 23A344 darwin-arm64, locale ja-JP)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[!] Xcode - develop for iOS and macOS (Xcode 15.1)
✗ CocoaPods installed but not working.
You appear to have CocoaPods installed but it is not working.
This can happen if the version of Ruby that CocoaPods was installed with is different from the one being used to invoke it.
This can usually be fixed by re-installing CocoaPods.
To re-install see https://guides.cocoapods.org/using/getting-started.html#installation for instructions.
[✓] Chrome - develop for the web
[✓] Android Studio (version 2022.3)
[✓] VS Code (version 1.84.2)
[✓] Connected device (2 available)
[✓] Network resources

```