ruby-on-rails - Nokogiri 与 Ruby on Rails 相关的问题

Question

我正在尝试在我的机器上安装 nokogiri，但我收到以下错误:

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

    current directory: /Users/username/.rbenv/versions/2.0.0-p481/lib/ruby/gems/2.0.0/gems/nokogiri-1.6.6.4/ext/nokogiri
/Users/username/.rbenv/versions/2.0.0-p481/bin/ruby -r ./siteconf20151127-29540-11ahx4h.rb extconf.rb
checking if the C compiler accepts ... *** 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/username/.rbenv/versions/2.0.0-p481/bin/ruby
    --help
    --clean
/Users/username/.rbenv/versions/2.0.0-p481/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
    from /Users/username/.rbenv/versions/2.0.0-p481/lib/ruby/2.0.0/mkmf.rb:549:in `block in try_compile'
    from /Users/username/.rbenv/versions/2.0.0-p481/lib/ruby/2.0.0/mkmf.rb:500:in `with_werror'
    from /Users/username/.rbenv/versions/2.0.0-p481/lib/ruby/2.0.0/mkmf.rb:549:in `try_compile'
    from extconf.rb:80:in `nokogiri_try_compile'
    from extconf.rb:87:in `block in add_cflags'
    from /Users/username/.rbenv/versions/2.0.0-p481/lib/ruby/2.0.0/mkmf.rb:599:in `with_cflags'
    from extconf.rb:86:in `add_cflags'
    from extconf.rb:337:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /Users/username/.rbenv/versions/2.0.0-p481/lib/ruby/gems/2.0.0/extensions/x86_64-darwin-14/2.0.0-static/nokogiri-1.6.6.4/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/username/.rbenv/versions/2.0.0-p481/lib/ruby/gems/2.0.0/gems/nokogiri-1.6.6.4 for inspection.
Results logged to /Users/username/.rbenv/versions/2.0.0-p481/lib/ruby/gems/2.0.0/extensions/x86_64-darwin-14/2.0.0-static/nokogiri-1.6.6.4/gem_make.out

我不确定如何解决这个问题，因为我在设置 native 扩展方面没有太多经验。任何帮助将不胜感激。让我知道是否需要提供更多信息。

Answer 1

这似乎是一个普遍的问题。您可以查看以下链接

http://www.nokogiri.org/tutorials/installing_nokogiri.html

您需要将 Rubygems 更新到 2.4.5 或更高版本，并检查您的电脑上是否安装了开发工具。

或者，如果您使用的是 bundle ，则可以执行以下操作

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