How do I fix 'brew install pkg-config'?

问题

Warning: Could not link pkg-config. Unlinking...
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 pkg-config`‏‏‏‏‏‏

回答1:

1. brew reinstall pkg-config
2. rm -R offending-directory
3. repeat step 1

回答2:

As Michael Pigg said above, in my case it was the folder permission issue. I had to do the following:

sudo chmod 777 /usr/local/bin
sudo chmod 777 /usr/local/share/man/man1
brew link pkg-config

And after I'm done:

sudo chmod 755 /usr/local/bin
sudo chmod 755 /usr/local/share/man/man1

to restore the original permissions.

回答3:

It may be a permissions issue on /usr/local/share. You need to have write permission in that directory for the link to complete. However, zsh will complain about the directory being insecure if you set the write permission. I gave the write permission to allow pkg-config to install and then removed it so that zsh would be happy.

回答4:

1. reinstall command line tools: https://developer.apple.com/downloads/index.action
2. brew link --overwrite --dry-run pkg-config

来源：https://stackoverflow.com/questions/13483059/how-do-i-fix-brew-install-pkg-config