This is such a pain to install on OSX. Due to Xcode or some other nonsense, OSX has a real hard time getting the required lib’s to get Nokogiri installed… you can try and follow the directions on the Nokogiri main site but it won’t work.
The solution I found in a comment on Stack Overflow and I’m listing it here for further reference:
gem install nokogiri — –with-xml2-include=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/libxml2 –use-system-libraries
I needed the –use-system-libraries. I mean look at that install command, it’s nuts. But that’s what you have to do, so you can get nokogiri installed.
I think PC is a lot easier, although I haven’t tried on a PC in some time.