Gem文件不会使用bundler更新或安装
我正在研究Michael Hartl的RoR教程。 我在第3章。不幸的是，复制和粘贴gem文件对我来说不起作用，但我想出了哪个gem是问题所在。 它是水豚gem。 我已经评论过它并继续教程，但我正处于需要使用gem的地步。
这是一个示例$ bundle update给我一个错误：
$ bundle update Fetching gem metadata from https://rubygems.org/......... (Removed a bunch of text) Building nokogiri using system libraries. Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension. /Users/dbz/.rvm/rubies/ruby-2.0.0-p481/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. (Removed a bunch of text) Gem files will remain installed in /Users/dbz/.rvm/gems/ruby-2.0.0-p481/gems/nokogiri-1.6.3.1 for inspection. Results logged to /Users/dbz/.rvm/gems/ruby-2.0.0-p481/gems/nokogiri-1.6.3.1/ext/nokogiri/gem_make.out An error occurred while installing nokogiri (1.6.3.1), and Bundler cannot continue. Make sure that `gem install nokogiri -v '1.6.3.1'` succeeds before bundling. 我尝试去nokogiri网站并解决问题，但是当我尝试更新丢失的库（错误的早期部分）时，我的机器说我已经有了它们。
这是我的Gemfile：
source 'https://rubygems.org' ruby '2.0.0' #ruby-gemset=railstutorial_rails_4_0 gem 'rails', '4.0.8' group :development, :test do gem 'sqlite3', '1.3.8' gem 'rspec-rails', '2.13.1' end group :test do gem 'selenium-webdriver', '2.35.1' #gem 'capybara', '2.1.0' # This line breaks everything end gem 'sass-rails', '4.0.1' gem 'uglifier', '2.1.1' gem 'coffee-rails', '4.0.1' gem 'jquery-rails', '3.0.4' gem 'turbolinks', '1.1.1' gem 'jbuilder', '1.0.2' group :doc do gem 'sdoc', '0.3.20', require: false end group :production do gem 'pg', '0.15.1' gem 'rails_12factor', '0.0.2' end
编辑：来自http://nokogiri.org/tutorials/installing_nokogiri.html安装页面
我遵循了所有步骤，并在最后一步我需要运行命令
gem install nokogiri -- --with-xml2-include=/usr/local/Cellar/libxml2/2.7.8/include/libxml2 --with-xml2-lib=/usr/local/Cellar/libxml2/2.7.8/lib --with-xslt-dir=/usr/local/Cellar/libxslt/1.1.26 --with-iconv-include=/usr/local/Cellar/libiconv/1.13.1/include --with-iconv-lib=/usr/local/Cellar/libiconv/1.13.1/lib
我的控制台的输出是：
Daniels-MacBook-Air:libiconv-1.13.1 dbz$ pwd /Users/dbz/libiconv-1.13.1 Daniels-MacBook-Air:libiconv-1.13.1 dbz$ gem install nokogiri -- --with-xml2- include=/usr/local/Cellar/libxml2/2.7.8/include/libxml2 --with-xml2-lib=/usr/local/Cellar/libxml2/2.7.8/lib --with-xslt-dir=/usr/local/Cellar/libxslt/1.1.26 --with-iconv-include=/usr/local/Cellar/libiconv/1.13.1/include --with-iconv-lib=/usr/local/Cellar/libiconv/1.13.1/lib Building native extensions with: '--with-xml2- include=/usr/local/Cellar/libxml2/2.7.8/include/libxml2' This could take a while... Building nokogiri using packaged libraries. ERROR: Error installing nokogiri: ERROR: Failed to build gem native extension. /Users/dbz/.rvm/rubies/ruby-2.0.0-p481/bin/ruby extconf.rb --with-xml2- include=/usr/local/Cellar/libxml2/2.7.8/include/libxml2 Building nokogiri using packaged libraries. ----- libiconv 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 --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=/Users/dbz/.rvm/rubies/ruby-2.0.0-p481/bin/ruby --help --clean --use-system-libraries --enable-static --disable-static --with-zlib-dir --without-zlib-dir --with-zlib-include --without-zlib-include=${zlib-dir}/include --with-zlib-lib --without-zlib-lib=${zlib-dir}/lib --enable-cross-build --disable-cross-build Gem files will remain installed in /Users/dbz/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/nokogiri-1.6.3.1 for inspection. Results logged to /Users/dbz/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/nokogiri-1.6.3.1/ext/nokogiri/gem_make.out Daniels-MacBook-Air:libiconv-1.13.1 dbz$ --with-xml2-lib=/usr/local/Cellar/libxml2/2.7.8/lib -bash: --with-xml2-lib=/usr/local/Cellar/libxml2/2.7.8/lib: No such file or directory Daniels-MacBook-Air:libiconv-1.13.1 dbz$ --with-xslt-dir=/usr/local/Cellar/libxslt/1.1.26 -bash: --with-xslt-dir=/usr/local/Cellar/libxslt/1.1.26: No such file or directory Daniels-MacBook-Air:libiconv-1.13.1 dbz$ --with-iconv-include=/usr/local/Cellar/libiconv/1.13.1/include -bash: --with-iconv-include=/usr/local/Cellar/libiconv/1.13.1/include: No such file or directory Daniels-MacBook-Air:libiconv-1.13.1 dbz$ --with-iconv-lib=/usr/local/Cellar/libiconv/1.13.1/lib -bash: --with-iconv-lib=/usr/local/Cellar/libiconv/1.13.1/lib: No such file or directory
您可能会遗漏一些包裹。 尝试手动安装它们
对于Mac OSX：
$ sudo port install libxml2 libxslt
用homebrew
$ brew install libxml2
有关详细信息，请在此处查看此链接 。 祝好运！
我找到了一个有效的解决方案：
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
来自： 当我运行bundle install时，Nokogiri’无法构建gem native extension’
来源： https ： //github.com/sparklemotion/nokogiri/issues/1099#issuecomment-43023208
只需在控制台中输入： gem install nokogiri -v '1.6.3.1'然后点击回车…完成之后…运行bundle
如果你正在使用自制软件..类型： brew update然后输入brew doctor
我看到你的post后刚解决了同样的问题。 这是Homebrew的一个问题，不包括版本9.0及更高版本的libicov。 您需要手动安装库，然后使用定义的lib路径进行安装。 见http://nokogiri.org/tutorials/installing_nokogiri.html