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Macで '/Library/Developer/CommandLineTools' is a command line tools instance って言われた

Posted at
  • macOSMojave
  • バージョン10.14.6

雑メモ。

ターミナルで下記のように言われた。

$ opendiff
xcode-select: error: tool 'opendiff' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance

そこで

$ ls -la /Library/Developer/CommandLineTools/
total 0
drwxr-xr-x 6 root admin 192 8 15 11:16 .
drwxr-xr-x 4 root admin 128 9 8 17:43 ..
drwxr-xr-x 5 root admin 160 7 13 13:44 Library
drwxr-xr-x 3 root admin 96 7 13 13:11 Packages
drwxr-xr-x 4 root wheel 128 8 15 11:16 SDKs
drwxr-xr-x 7 root admin 224 7 13 13:44 usr
$ xcode-select -p
/Library/Developer/CommandLineTools

と環境を見てみたが、何が問題なのかよくわからんかった。

ググって出てきたこの記事
http://shinriyo.hateblo.jp/entry/2018/02/17/IonicのiOSのビルドのエラー

を参考にして

$ sudo xcode-select -switch /Library/Developer/CommandLineTools
$ sudo xcode-select -r

とやってみたら、

$ opendiff
2019-12-19 08:37:14.020 opendiff[53779:3245168] too few arguments
2019-12-19 08:37:14.024 opendiff[53779:3245168] usage: opendiff file1 file2 [-ancestor ancestorFile] [-merge mergeFile]

使えるようになった。
なお、どういう原理で問題が解消したかは把握してない。

今回の記事は以上です。

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