久しぶりにbrew updateをかけようとしたらエラーが出てアップデートできなかったので、brew doctorで出たWarningと解決手順をメモ。
環境
MacBook Pro (Retina, 13-inch、Early 2015)
OS X El Capitan バージョン10.11.6（15G1004）
XQuartz 2.7.8
Xcode Version 8.0 (8A218a)
５つのWarningが出たよ
brew doctorを叩いて出たWarningは以下の5つ。
Warning: Your XQuartz (2.7.8) is outdated
Please install XQuartz 2.7.9:
https://xquartz.macosforge.org
Warning: You have unlinked kegs in your Cellar
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
mono
Warning: You have Xcode 8 installed without the CLT;
this causes certain builds to fail on OS X El Capitan (10.11).
Please install the CLT via:
sudo xcode-select --install
Warning: Broken symlinks were found. Remove them with `brew prune`:
/usr/local/share/man/man8/prlexec.8
Warning: Some keg-only formula are linked into the Cellar.
Linking a keg-only formula, such as gettext, into the cellar with
`brew link <formula>` will cause other formulae to detect them during
the `./configure` step. This may cause problems when compiling those
other formulae.
Binaries provided by keg-only formulae may override system binaries
with other strange results.
You may wish to `brew unlink` these brews:
openssl
順番に解消していく。
解決方法
1.XQuartzのアップデート
Warning: Your XQuartz (2.7.8) is outdated
Please install XQuartz 2.7.9:
https://xquartz.macosforge.org
XQuartzが古い。公式サイトから最新版をインストールする。
2.monoのシンボリックリンクを貼り直す
Warning: You have unlinked kegs in your Cellar
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
mono
monoのシンボリックリンクが切れてる。
brew link monoでシンボリックリンクを貼る。
Error: Could not symlink bin/al
Target /usr/local/bin/al
already exists. You may want to remove it:
rm '/usr/local/bin/al'
こんなErrorが出たらoverwriteオプションつけて強制的に上書きする。
$ brew link --overwrite mono
3.CLTのアップデート
Warning: You have Xcode 8 installed without the CLT;
this causes certain builds to fail on OS X El Capitan (10.11).
Please install the CLT via:
sudo xcode-select --install
XcodeのCLT（Command Line Tools）が古いのでアップデートする。
4.デッドシンボリックリンクを削除
Warning: Broken symlinks were found. Remove them with `brew prune`:
/usr/local/share/man/man8/prlexec.8
これは単純に書かれてるコマンド叩いたら権限がないとのエラーが出た。
$ brew prune /usr/local/share/man/man8/prlexec.8
Error: Permission denied - /usr/local/share/man/man8/prlexec.8
親フォルダの所有者を実行ユーザーにして権限を付与。
$ sudo chown -R unsoluble_sugar /usr/local/share/man/man8
再度brew pruneを叩いて解決。
$ brew prune /usr/local/share/man/man8/prlexec.8
Pruned 1 symbolic links and 5 directories from /usr/local
5.opensslのシンボリックリンクを貼り直す
Warning: Some keg-only formula are linked into the Cellar.
Linking a keg-only formula, such as gettext, into the cellar with
`brew link <formula>` will cause other formulae to detect them during
the `./configure` step. This may cause problems when compiling those
other formulae.
Binaries provided by keg-only formulae may override system binaries
with other strange results.
You may wish to `brew unlink` these brews:
openssl
opensslのシンボリックリンクを削除。
$ brew unlink openssl
貼り直す。
$ brew install openssl
これだけ。
Homebrewをアップデート
brew doctorで問題が解消されていることを確認。
$ brew doctor
Your system is ready to brew.
brew updateでHomebrewをアップデート。
$ brew update
Updated 1 tap (homebrew/core).
==> Updated Formulae
ace gnome-builder gucharmap
clutter-gtk gnome-icon-theme mongodb
evince gsettings-desktop-schemas neofetch
gedit gtk+3 nmap
git-archive-all gtkmm3
おしまい。