下面是在服务器上运行bundle install vendorgems的错误。
Installing nokogiri (1.5.0) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/home/dtt/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb
checking for libxml/parser.h... no
-----
libxml2 is missing. please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.
-----
*** 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=/home/dtt/.rvm/rubies/ruby-1.9.2-p290/bin/ruby
--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-iconv-dir
--without-iconv-dir
--with-iconv-include
--without-iconv-include=${iconv-dir}/include
--with-iconv-lib
--without-iconv-lib=${iconv-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-xslt-dir
--without-xslt-dir
--with-xslt-include
--without-xslt-include=${xslt-dir}/include
--with-xslt-lib
--without-xslt-lib=${xslt-dir}/lib
Gem files will remain installed in /vol/www/emclab/releases/20111104001151/vendor/gems/ruby/1.9.1/gems/nokogiri-1.5.0 for inspection.
Results logged to /vol/www/emclab/releases/20111104001151/vendor/gems/ruby/1.9.1/gems/nokogiri-1.5.0/ext/nokogiri/gem_make.out
An error occured while installing nokogiri (1.5.0), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.5.0'` succeeds before bundling.
你可以跳过这部分。错误信息几乎是不言自明的，但网站需要多说几句话来解释代码。
有什么想法吗？
你需要在你的机器上安装所有必要的库。当你安装RVM时，它应该已经为你列出了这些。在当前版本的Rvm上，你可以运行 rvm requirements 以查看确切的名单。现在，这个列表是：
sudo apt-get install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion
你缺少一些软件包 试着运行这个（仅限Linux）。
$ sudo apt-get install libxslt-dev libxml2-dev
这看起来像是一个 gem 依赖性错误。
你需要运行 bundle update 命令。它将解决依赖关系。
bundle update
你需要安装libxml2.
在 Mac OS 上，如果使用 homebrew，则需要安装 libxml2。
brew install libxml2
只要这样做。
sudo apt-get install libxslt-dev libxml2-dev libxml2
然后在终端(linux)cmd(windows)输入这个。
export NOKOGIRI_USE_SYSTEM_LIBRARIES=true
如果其他的不行就试试这个，对我来说真的很有用。Devtools for CentOS
当我使用这个代码时，我得到了另一个错误。
ERROR: Error installing disposable:
invalid gem: package is corrupt, exception while verifying: undefined method `size' for nil:NilClass (NoMethodError) in /home/admin/.rvm/gems/ruby-2.1.3@lol/cache/nokogiri-1.6.4.1.gem
我尝试了许多不同的解决方案， 但帮助医疗。
$ rm /home/admin/.rvm/gems/ruby-2.1.3@lol/cache/nokogiri-1.6.4.1.gem
$ gem update
$ gem install nokogiri
其他命令可以帮助：
sudo apt-get install synaptic
sudo apt-get update
sudo apt-get install qt4-dev-tools libqt4-dev libqt4-core libqt4-gui
sudo apt-get install build-essential
sudo apt-get install "^libxcb.*" libx11-xcb-dev libglu1-mesa-dev libxrender-dev
对于Ubuntu来说:
sudo apt-get install libxml2 libxml2-dev libxslt-dev zlib1g-dev
sudo gem install nokogiri -v '1.8.2' -- --use-system-libraries
对于MacOS：
brew install libxml2
gem install nokogiri -v '1.8.2' -- --use-system-libraries \
--with-xml2-include=$(brew --prefix libxml2)/include/libxml2