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 anyone else experiencing this issue, I solved it by running this command within the project directory

gem install nokogiri -- --use-system-libraries

Update: I ran into this again and tried just updating the gem which worked for me...

gem update nokogiri

Answer 2

I was able to install Nokogiri by running the following packages:

$ dnf group install "C Development Tools and Libraries"
$ dnf install ruby-devel libxml2-devel patch

Answer 3

On Mac OS X Yosemite my mistake was that I tried to use sudo gem install when it's a rule of thumb to not use superuser privileges when installing gems.

In my case it tried to modify the system installation of Ruby, and that's not a good idea. I installed rbenv, installed Ruby 2.2.2 thru it and set it as global, which is a term from rbenv's documentation. After that Nokogiri could install itself with a simple

gem install nokogiri

No hacks or workarounds were necessary, just a properly set environment; Nokogiri does the rest perfectly.

Answer 4

It will be:

sudo yum install -y libxml2 libxml2-devel

on RHEL servers.

Answer 5

In Mac OS X (Mavericks), installing the libraries with brew and setting NOKOGIRI_USE_SYSTEM_LIBRARIES=1 before installing the gem did the trick for me.

Summarising:

• If previously installed, uninstall the gem:

  gem uninstall nokogiri
  

• Use Homebrew to install libxml2, libxslt and libiconv:

  brew install libxml2 libxslt libiconv
  

• Install the gem specifying the paths to the libraries to be linked against:

  NOKOGIRI_USE_SYSTEM_LIBRARIES=1 gem install nokogiri -- --use-system-libraries --with-iconv-dir="$(brew --prefix libiconv)" --with-xml2-config="$(brew --prefix libxml2)/bin/xml2-config" --with-xslt-config="$(brew --prefix libxslt)/bin/xslt-config"
  

Answer 6

For Windows x64:

gem inst nokogiri --pre --platform ruby

For more information check this thread: https://github.com/sparklemotion/nokogiri/issues/864