1. yukpiz

    Posted

    yukpiz
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+Homebrewで古いバージョンのdylibにswitchする
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+``mpv``を使おうとすると
+
+```
+dyld: Library not loaded: /usr/local/opt/jpeg/lib/libjpeg.8.dylib
+ Referenced from: /usr/local/bin/mpv
+ Reason: image not found
+Trace/BPT trap: 5
+```
+
+# /usr/local/opt/jpeg/libを見ると
+
+バージョンが上がっている
+
+```
+drwxr-xr-x 5 yukpiz admin 170 10 24 11:19 .
+drwxr-xr-x 9 yukpiz admin 306 10 23 11:17 ..
+-r--r--r-- 1 yukpiz admin 207280 10 23 11:17 libjpeg.9.dylib
+-r--r--r-- 1 yukpiz admin 276744 1 17 2016 libjpeg.a
+lrwxr-xr-x 1 yukpiz admin 15 1 17 2016 libjpeg.dylib -> libjpeg.9.dylib
+```
+
+# 古いバージョンが手元に残っているか調べる
+
+8dが残っている
+
+```bash
+$ brew info libjpeg
+jpeg: stable 9b (bottled)
+Image manipulation library
+http://www.ijg.org
+/usr/local/Cellar/jpeg/8d (19 files, 713.8KB)
+ Poured from bottle on 2016-12-16 at 19:52:28
+/usr/local/Cellar/jpeg/9b (20 files, 725.2KB) *
+ Poured from bottle on 2017-10-23 at 11:17:58
+From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/jpeg.rb
+```
+
+# 8dに切り替える
+
+```bash
+$ brew switch libjpeg 8d
+Cleaning /usr/local/Cellar/jpeg/8d
+Cleaning /usr/local/Cellar/jpeg/9b
+17 links created for /usr/local/Cellar/jpeg/8d
+```
+
+# 9bにも戻せます
+
+```bash
+$ brew switch libjpeg 9b
+Cleaning /usr/local/Cellar/jpeg/8d
+Cleaning /usr/local/Cellar/jpeg/9b
+17 links created for /usr/local/Cellar/jpeg/9b
+```
+
+# 参考
+
+https://qiita.com/honeniq/items/778cc08d2db78e6774d8