2022/12/8

【CocoaPods:Error】Ignoring ffi-1.15.5 because its extensions are not built. Try: gem pristine ffi --version 1.15.5

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CocoaPodsがインストールできないエラーを解決
エラー：Ignoring ffi-1.15.5 because its extensions are not built. Try: gem pristine ffi --version 1.15.5
エラー：Ignoring ffi-1.15.5 because its extensions are not built. Try: gem pristine ffi --version 1.15.5
エラー：Could not find 'ffi' (>= 1.15.0) among 85 total gem(s) (Gem::MissingSpecError)
エラー：You don't have write permissions for the /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/gems/2.6.0 directory.

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発生したエラー
「Ignoring ffi-1.15.4 because its extensions are not built. Try: gem pristine ffi --version 1.15.4」とは？
解決策を模索していく

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発生したエラー

(関係あるか分かりませんが)Mac OSとXcodeをアップデート後にpod initコマンドを実行しようとしたら以下のようなエラーが発生してPodFileを生成することができなくなってしまいました。

Ignoring ffi-1.15.5 because its extensions are not built. Try: gem pristine ffi --version 1.15.5
Ignoring ffi-1.15.4 because its extensions are not built. Try: gem pristine ffi --version 1.15.4
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Ignoring ffi-1.15.4 because its extensions are not built. Try: gem pristine ffi --version 1.15.4
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.11.3/lib/cocoapods/command.rb:128:in `git_version': Failed to extract git version from `git --version` ("xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun\n") (RuntimeError)
from /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.11.3/lib/cocoapods/command.rb:140:in `verify_minimum_git_version!'
from /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.11.3/lib/cocoapods/command.rb:49:in `run'
from /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.11.3/bin/pod:55:in `<top (required)'

from /usr/local/bin/pod:23:in `load'
from /usr/local/bin/pod:23:in `<main>'

「Ignoring ffi-1.15.4 because its extensions are not built. Try: gem pristine ffi --version 1.15.4」とは？

発生したエラーを翻訳してみると以下のようになりました。どうやらバージョンアップの兼ね合いなのか拡張機能が正常に動作しなくなってしまったようです。

拡張機能がビルドされていないため、ffi-1.15.5 を無視します。試してください: gem pristine ffi --version 1.15.5

指示通りにgem pristine ffi --version 1.15.5を実行してみました。

$ gem pristine ffi --version 1.15.4
Ignoring ffi-1.15.5 because its extensions are not built. Try: gem pristine ffi --version 1.15.5
Ignoring ffi-1.15.4 because its extensions are not built. Try: gem pristine ffi --version 1.15.4
ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions for the /Library/Ruby/Gems/2.6.0 directory.

PermissionErrorが起きてしまったのでsudo(スーパーユーザーの権限)で実行します。

$ sudo gem pristine ffi -v '1.15.5'

Password:
Ignoring ffi-1.15.5 because its extensions are not built. Try: gem pristine ffi --version 1.15.5
Restoring gems to pristine condition...
Building native extensions with: '--enable-libffi-alloc'
This could take a while...
ERROR:  While executing gem ... (Gem::Ext::BuildError)
    ERROR: Failed to build gem native extension.

    current directory: /Users/s/.gem/ruby/2.6.0/gems/ffi-1.15.5/ext/ffi_c
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0 -r ./siteconf20221208-48155-ilepz9.rb extconf.rb --enable-libffi-alloc
mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/include/ruby.h

You might have to install separate package for the ruby development
environment, ruby-dev or ruby-devel for example.

extconf failed, exit code 1

Gem files will remain installed in /Users/s/.gem/ruby/2.6.0/gems/ffi-1.15.5 for inspection.
Results logged to /Users/s/.gem/ruby/2.6.0/extensions/universal-darwin-22/2.6.0/ffi-1.15.5/gem_make.out

なんかめちゃくちゃエラーが出ました。。。ここで再度pod initを実行してみるとエラーが変わってしまいました。

$ pod init                         
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/dependency.rb:311:in `to_specs': Could not find 'ffi' (>= 1.15.0) among 85 total gem(s) (Gem::MissingSpecError)
Checked in 'GEM_PATH=/Users/s/.gem/ruby/2.6.0:/Library/Ruby/Gems/2.6.0:/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/gems/2.6.0', execute `gem env` for more information

解決策を模索していく

まずは一度アンインストールしてみます。ものすごい数削除して良いかを確認されるのでとりあえずyesを連打してみました。(大丈夫だったかな...)

$ sudo gem uninstall --all

You have requested to uninstall the gem:
	activesupport-6.1.6.1

cocoapods-core-1.11.3 depends on activesupport (>= 5.0, < 7)
If you remove this gem, these dependencies will not be met.
Continue with Uninstall? [yN]  y
Successfully uninstalled activesupport-6.1.6.1

You have requested to uninstall the gem:
	addressable-2.8.0

cocoapods-1.11.3 depends on addressable (~> 2.8)
cocoapods-core-1.11.3 depends on addressable (~> 2.8)
If you remove this gem, these dependencies will not be met.
Continue with Uninstall? [yN]  y
Successfully uninstalled addressable-2.8.0
〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜〜
in addition to the gem? [Yn]  
Removing sass
Removing sass-convert
Removing scss
ySuccessfully uninstalled sass-3.7.4
Successfully uninstalled sass-listen-4.0.0
Successfully uninstalled test-unit-3.2.9
Successfully uninstalled typhoeus-1.4.0
Successfully uninstalled tzinfo-2.0.5
Remove executables:
	xcodeproj

in addition to the gem? [Yn]  
Removing xcodeproj
Successfully uninstalled xcodeproj-1.22.0
Successfully uninstalled xmlrpc-0.3.0
Successfully uninstalled zeitwerk-2.6.0
INFO:  Uninstalled all gems in

INFO: Uninstalled all gems in が出ればアンインストールは成功です。そして再度インストールしてみます。

$ sudo gem install cocoapods

Fetching concurrent-ruby-1.1.10.gem
Fetching i18n-1.12.0.gem
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Successfully installed httpclient-2.8.3
A new major version is available for Algolia! Please now use the https://rubygems.org/gems/algolia gem to get the latest features.
Successfully installed algoliasearch-1.27.5
Building native extensions. This could take a while...
ERROR:  Error installing cocoapods:
	ERROR: Failed to build gem native extension.

    current directory: /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.5/ext/ffi_c
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0 -r ./siteconf20221208-49773-78uw9c.rb extconf.rb
mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/include/ruby.h

You might have to install separate package for the ruby development
environment, ruby-dev or ruby-devel for example.

extconf failed, exit code 1

Gem files will remain installed in /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.5 for inspection.
Results logged to /Library/Ruby/Gems/2.6.0/extensions/universal-darwin-22/2.6.0/ffi-1.15.5/gem_make.out

また同じエラーが出てgem自体をインストールすることができなくなってしまいました。teratailに同じようなエラーの解決策が載っていたので試してみます。

teratail：cocoapodsインストールのエラー内容が理解できなくて困ってます。

どうやらXcodeCommandLineToolが入っていないことが原因のようなので以下コマンドを実行してXcodeCommandLineToolをインストールしていきます。

$ xcode-select --install

続いて以下のコマンドを実行後再度sudo gem install cocoapodsを実行してみます。

$ sudo gem install ffi
Password:
Building native extensions. This could take a while...
Successfully installed ffi-1.15.5
Parsing documentation for ffi-1.15.5
Installing ri documentation for ffi-1.15.5
Done installing documentation for ffi after 8 seconds
1 gem installed

$ sudo gem install cocoapods

Fetching concurrent-ruby-1.1.10.gem
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Successfully installed netrc-0.11.0

34 gems installed

$ pod init
// 生成できた！！！