Nokogiri 'Failed to build gem native extension' when I run bundle install

Question

I'm running bundle install and I'm getting this error:

Building nokogiri using system libraries.  Gem::Ext::BuildError: ERROR: Failed to build gem native extension.      /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb --use-system-libraries Building nokogiri using system libraries. libxml2 version 2.6.21 or later is required! *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers.  Check the mkmf.log file for more details.  You may need configuration options.  Provided configuration options:     --with-opt-dir     --without-opt-dir     --with-opt-include     --without-opt-include=${opt-dir}/include     --with-opt-lib     --without-opt-lib=${opt-dir}/lib     --with-make-prog     --without-make-prog     --srcdir=.     --curdir     --ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby     --help     --clean     --use-system-libraries     --with-zlib-dir     --without-zlib-dir     --with-zlib-include     --without-zlib-include=${zlib-dir}/include     --with-zlib-lib     --without-zlib-lib=${zlib-dir}/lib     --with-xml2-dir     --without-xml2-dir     --with-xml2-include     --without-xml2-include=${xml2-dir}/include     --with-xml2-lib     --without-xml2-lib=${xml2-dir}/lib     --with-libxml-2.0-config     --without-libxml-2.0-config     --with-pkg-config     --without-pkg-config     --with-xslt-dir     --without-xslt-dir     --with-xslt-include     --without-xslt-include=${xslt-dir}/include     --with-xslt-lib     --without-xslt-lib=${xslt-dir}/lib     --with-libxslt-config     --without-libxslt-config     --with-pkg-config     --without-pkg-config     --with-exslt-dir     --without-exslt-dir     --with-exslt-include     --without-exslt-include=${exslt-dir}/include     --with-exslt-lib     --without-exslt-lib=${exslt-dir}/lib     --with-libexslt-config     --without-libexslt-config     --with-pkg-config     --without-pkg-config  extconf failed, exit code 1  Gem files will remain installed in /Users/myuser/projectpath/vendor/bundle/ruby/2.0.0/gems/nokogiri-1.6.2.rc2 for inspection. Results logged to /Users/myuser/projectpath/vendor/bundle/ruby/2.0.0/extensions/universal-darwin-13/2.0.0/nokogiri-1.6.2.rc2/gem_make.out An error occurred while installing nokogiri (1.6.2.rc2), and Bundler cannot continue. Make sure that `gem install nokogiri -v '1.6.2.rc2'` succeeds before bundling. 

Any ideas what could this be?

EDIT:

I also have installed nokogiri following the instructions in the tutorial, and the weird thing is that the gem was successfully installed. When I run gem list, I have nokogiri (1.6.2.1), but when running bundle install it displays the error.

Answer 1

Previous advises didn't help me, here is the solution for OS 10.9:

brew install libxml2 bundle config build.nokogiri "--use-system-libraries --with-xml2-include=/usr/local/opt/libxml2/include/libxml2" bundle install 

Answer 2

On Mavericks this workaround worked for me:

gem install nokogiri -- --use-system-libraries=true --with-xml2-include=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/libxml2 

See: https://github.com/sparklemotion/nokogiri/issues/1099#issuecomment-43023208