Nokogiri installation fails -libxml2 is missing

Question

I always worked my way around Nokogiri installation issues by following the documentation in the \"Installing Nokogiri\" tutorial.

But this time, even after installi

Answer 1

For OSX users, if you've had success installing Nokogiri before, yet are getting errors installing it on, say, using a new version of Ruby that you've added and that error that includes a message like:

The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.

This could be indicative of a XCode upgrade having happened via the App Store, either manually or automatically, and you not having opened it since that time.

If so, you should be able to open XCode, agree to the new license, and then install Nokogiri successfully.