Rails にnokogiriをインストールに失敗したときの対応

こんな感じのエラーで失敗した

Installing nokogiri (1.4.3.1) with native extensions /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:483:in `build_extensions': ERROR: Failed to build gem nati
/usr/bin/ruby1.8 extconf.rb

checking for libxml/parser.h... no








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libxml2 is missing.  please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.








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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.

libxslt-dev をインストールして対応

> sudo apt-get install libxslt-dev