brew install libmpc
エラーが発生した後
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
You can try again using `brew link libmpc'
それから私は走ります
brew doctor
そして私は得た
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: `libmpc`
だから私は走る
brew link libmpc
そして私は得た
Error: Could not symlink file: /usr/local/Cellar/libmpc/1.0.1/lib/libmpc.dylib
/usr/local/lib/libmpc.dylib may already exist.
/usr/local/lib may not be writable.
私は何をすべきか？