在 El Capitan 上安装 Nokogiri (1.6.7) 时出错 [英] Error while installing Nokogiri (1.6.7) on El Capitan

问题描述

我的一个开发人员更新了 Nokogiri，当拉取更新的 Gemfile 时，我的bundle install 失败了.

One of my developers have updated Nokogiri, and when pulling the updated Gemfile my bundle install fails.

➜  my-project git:(master) bundle install
Fetching source index from https://rubygems.org/
Using rake 10.4.2
Using i18n 0.7.0
Using json 1.8.3
Using minitest 5.8.3
Using thread_safe 0.3.5
Using tzinfo 1.2.2
Using activesupport 4.2.3
Using builder 3.2.2
Using erubis 2.7.0
Using mini_portile2 2.0.0

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /Users/me/.rvm/rubies/ruby-2.1.2/bin/ruby extconf.rb --use-system-libraries
checking if the C compiler accepts ... yes
checking if the C compiler accepts -Wno-error=unused-command-line-argument-hard-error-in-future... no
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=/Users/me/.rvm/rubies/ruby-2.1.2/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-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

extconf failed, exit code 1

Gem files will remain installed in /Users/me/.rvm/gems/ruby-2.1.2@my-project/gems/nokogiri-1.6.7 for inspection.
Results logged to /Users/me/.rvm/gems/ruby-2.1.2@my-project/extensions/x86_64-darwin-13/2.1.0-static/nokogiri-1.6.7/gem_make.out
An error occurred while installing nokogiri (1.6.7), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.6.7'` succeeds before bundling.

如未能安装 Nokogiri gem"中所建议的，我尝试运行失败:

As suggested in "Failing to install Nokogiri gem" I have unsuccessfully tried to run:

bundle config build.nokogiri --use-system-libraries
bundle install

如未能安装 Nokogiri gem"中所建议的，我也试过:

As suggested in "Failing to install Nokogiri gem" I also tried:

gem install nokogiri -- --use-system-libraries

和:

gem install nokogiri -v 1.6.5 -- --use-system-libraries

我的操作系统版本是 El Capitan 10.11.2，我已经检查了 Xcode 许可协议是否已被接受.

My OS version is El Capitan 10.11.2, and I have checked that the Xcode licence agreement has been accepted.

任何想法如何让 Nokogiri 安装成功?

Any ideas how to get the Nokogiri installation to succeed?

推荐答案

您应该先安装 xcode-select 包，然后再尝试安装 nokogiri.试试这些命令，

You should install xcode-select packages first, then try installing nokogiri again. Try these commands,

xcode-select --install

然后试试

gem install nokogiri

使用您想要的任何 Nokogiri 版本.

with whatever Nokogiri version you want.

Nokogiri 依赖于多个库，如 libxslt、libxml 和 zlib.在任何 Linux 发行版中安装 Nokogiri 之前，应安装这些的开发版本(包括源代码).对于 OS X，我猜上面的命令应该有效.

Nokogiri depends on multiple libraries like libxslt, libxml and zlib. Dev versions (including source) of these should be installed before installing Nokogiri in any Linux distribution. For OS X, the above command should work I guess.

实际的解决方案在下面的评论中.

The actual solution is in the comments below.

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