无法在Mac上安装Jekyll。
我用：
sudo gem install jekyll
但我有一个错误：
Building native extensions. This could take a while...
ERROR: Error installing jekyll:
ERROR: Failed to build gem native extension.
Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/yajl-ruby-1.2.1 for inspection.
Results logged to /Library/Ruby/Gems/2.0.0/gems/yajl-ruby-1.2.1/ext/yajl/gem_make.out
什么错了？如何解决？
gem -v
shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory
2.0.14