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根据《全新安装Mac OS Sierra (10.12)并使用HomeBrew安装ZSH + MNMP (Mac + Nginx + Mysql + Php) 开发环境》教程在mac下用brew安装php70出错。

brew install php70 --with-debug --with-gmp --with-homebrew-curl --with-homebrew-libressl --with-homebrew-libxml2 --with-homebrew-libxslt --with-imap --with-libmysql --with-mysql

出错信息：

configure: error: Cannot find libz

If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
https://github.com/josegonzalez/homebrew-php/issues

/usr/local/Homebrew/Library/Homebrew/utils/github.rb:226:in `raise_api_error': Validation Failed (GitHub::Error)
    from /usr/local/Homebrew/Library/Homebrew/utils/github.rb:184:in `open'
    from /usr/local/Homebrew/Library/Homebrew/utils/github.rb:233:in `issues_matching'
    from /usr/local/Homebrew/Library/Homebrew/utils/github.rb:266:in `issues_for_formula'
    from /usr/local/Homebrew/Library/Homebrew/exceptions.rb:325:in `fetch_issues'
    from /usr/local/Homebrew/Library/Homebrew/exceptions.rb:321:in `issues'
    from /usr/local/Homebrew/Library/Homebrew/exceptions.rb:383:in `dump'
    from /usr/local/Homebrew/Library/Homebrew/brew.rb:133:in `rescue in 
'
    from /usr/local/Homebrew/Library/Homebrew/brew.rb:31:in `
'

解决方法：

在命令行执行

$ xcode-select --install

再次安装
$ brew install php70 --with-debug --with-gmp --with-homebrew-curl --with-homebrew-libressl --with-homebrew-libxml2 --with-homebrew-libxslt --with-imap --with-libmysql --with-mysql

成功解决。

参考链接：

http://stackoverflow.com/questions/39442552/5-boxen-errors-when-running-boxen-our-boxen