Nokogiri 不安装？

Question

我似乎无法在我的 Mac OS X 10.8 系统上安装 Nokogiri。我知道这个解决方案有一个解决方法，解决方法是：

NOKOGIRI_USE_SYSTEM_LIBRARIES=1 bundle install

但我宁愿解决它，因为每次我做一个捆绑时，它都会失败。问题来了：

$ gem install nokogiri

Building native extensions.  This could take a while...
ERROR:  Error installing nokogiri:
  ERROR: Failed to build gem native extension.

    /Users/buf/.rvm/rubies/ruby-2.0.0-p195/bin/ruby extconf.rb
Extracting libxml2-2.8.0.tar.gz into tmp/x86_64-apple-darwin12.5.0/ports/libxml2/2.8.0... OK
Running 'configure' for libxml2 2.8.0... ERROR, review 'tmp/x86_64-apple-darwin12.5.0/ports/libxml2/2.8.0/configure.log' to see what happened.
*** 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/buf/.rvm/rubies/ruby-2.0.0-p195/bin/ruby
/Users/buf/.rvm/gems/ruby-2.0.0-p195@rentify193/gems/mini_portile-0.5.1/lib/mini_portile.rb:251:in `block in execute': Failed to complete configure task (RuntimeError)
  from /Users/buf/.rvm/gems/ruby-2.0.0-p195@rentify193/gems/mini_portile-0.5.1/lib/mini_portile.rb:243:in `chdir'
  from /Users/buf/.rvm/gems/ruby-2.0.0-p195@rentify193/gems/mini_portile-0.5.1/lib/mini_portile.rb:243:in `execute'
  from /Users/buf/.rvm/gems/ruby-2.0.0-p195@rentify193/gems/mini_portile-0.5.1/lib/mini_portile.rb:57:in `configure'
  from /Users/buf/.rvm/gems/ruby-2.0.0-p195@rentify193/gems/mini_portile-0.5.1/lib/mini_portile.rb:100:in `cook'
  from extconf.rb:101:in `block in <main>'
  from extconf.rb:119:in `call'
  from extconf.rb:119:in `block in <main>'
  from extconf.rb:109:in `tap'
  from extconf.rb:109:in `<main>'


Gem files will remain installed in /Users/buf/.rvm/gems/ruby-2.0.0-p195@rentify193/gems/nokogiri-1.6.0 for inspection.
Results logged to /Users/buf/.rvm/gems/ruby-2.0.0-p195@rentify193/gems/nokogiri-1.6.0/ext/nokogiri/gem_make.out

当我查看日志文件时：

configure: error: cannot find sources (entities.c) in /Volumes/Terra/Code/vimsource/vim/src or ..

有人知道怎么回事吗？

Answer 1

在 Mavericks 中，首先使用 Homebrew 安装 gem 所依赖的库，然后在实际安装 gem 之前设置 NOKOGIRI_USE_SYSTEM_LIBRARIES=1 对我来说很有效。

总结：

• 如果之前已安装，请卸载 gem：
  $ gem uninstall nokogiri

• 使用 Homebrew 安装 libxml2、libxslt 和 libiconv:
  $ brew install libxml2 libxslt libiconv

• 安装 gem，指定要链接的库的路径：
  $ NOKOGIRI_USE_SYSTEM_LIBRARIES=1 gem install nokogiri -- --use-system-libraries --with-iconv-dir="$(brew --prefix libiconv)" --with-xml2-config="$(brew --prefix libxml2)/bin/xml2-config" --with-xslt-config="$(brew --prefix libxslt)/bin/xslt-config"

gem 安装后bundle install应该没有错误完成。

Answer 2

问题是 libxml2-2.8.0 没有正确安装。首先尝试安装它，然后安装 Nokogiri。