MAC下 brew link qt 出现的一些问题
1.安装Ghost.py出现问题：在安装pyside前提下安装2.brew安装pyside
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink lib/pkgconfig/QtCLucene.pc
/usr/local/lib/pkgconfig is not writable.
按照提示：
You can try again using:
brew link qt
再次操作：
brew link qt
Linking /usr/local/Cellar/qt/4.8.7_2...
Error: Could not symlink lib/pkgconfig/QtCLucene.pc
/usr/local/lib/pkgconfig is not writable.
出现以上错误，我们使用brew doctor查看问题详情，以及建议操作：
Warning: /usr/local/lib/pkgconfig isn't writable.
This can happen if you "sudo make install" software that isn't managed
by Homebrew. If a formula tries to write a file to this directory, the
install will fail during the link step.
You should probably change the ownership and permissions of /usr/local/lib/pkgconfig
back to your user account.
sudo chown -R $(whoami) /usr/local/lib/pkgconfig
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