How to install Nokogiri on Mac OS Sierra 10.12

Question

I'm having troubles installing Nokogiri (1.6.8.1) on Mac OS Sierra 10.12.

I tried using brew install libxml2 libxslt and then referencing the install directories using command line options but it didn't help.

Answer 1

Open Xcode and, from the menu XCode -> Preferences update your Command Line Tools (Xcode 8.0).

Then do:

bundle config build.nokogiri --use-system-libraries=true --with-xml2-include="$(xcrun --show-sdk-path)"/usr/include/libxml2
bundle install

or just:

gem install nokogiri -v 1.6.8.1 -- --use-system-libraries=true --with-xml2-include="$(xcrun --show-sdk-path)"/usr/include/libxml2

Answer 2

The more simple solution is to execute:

xcode-select --install
gem install nokogiri

Update

For Mojave I'm using gem install nokogiri -v '1.6.6.2' -- --use-system-libraries

Answer 3

Try install libxml2 first with Homebrew.

brew install libxml2

Then if installing with bundle

bundle config build.nokogiri --use-system-libraries \
  --with-xml2-include=$(brew --prefix libxml2)/include/libxml2
bundle install

If installing directly with gem

gem install nokogiri -- --use-system-libraries \
  --with-xml2-include=$(brew --prefix libxml2)/include/libxml2

Answer 4

This might be a duplicate of gem install nokogiri -v '1.6.8.1' fails ... latest accepted answer there was to do:

brew unlink xz; bundle install; brew link xz

Re-linking xz might not be necessary ... if for example you only have that dependency because of the_silver_searcher (which links directly against the non-symlinked library).