我安装了所有库（linux），但它还不能工作，为什么？
gem install nokogiri -- --with-xml2-include=/home/mka/.linuxbrew/Cellar/libxml2/2.9.2/include/libxml2 --with-xml2-lib=/home/mka/.linuxbrew/Cellar/libxml2/2.9.2/lib --with-xslt-dir=/home/mka/.linuxbrew/Cellar/libxslt/1.1.28_1 --with-iconv-include=/home/mka/.linuxbrew/Cellar/libiconv/1.14/include --with-iconv-lib=/home/mka/.linuxbrew/Cellar/libiconv/1.14/lib
Building native extensions with: '--with-xml2-include=/home/mka/.linuxbrew/Cellar/libxml2/2.9.2/include/libxml2 --with-xml2-lib=/home/mka/.linuxbrew/Cellar/libxml2/2.9.2/lib --with-xslt-dir=/home/mka/.linuxbrew/Cellar/libxslt/1.1.28_1 --with-iconv-include=/home/mka/.linuxbrew/Cellar/libiconv/1.14/include --with-iconv-lib=/home/mka/.linuxbrew/Cellar/libiconv/1.14/lib'
This could take a while...
ERROR: Error installing nokogiri:
ERROR: Failed to build gem native extension.
/home/mka/bin/ruby -r ./siteconf20150620-18735-gpygf8.rb extconf.rb --with-xml2-include=/home/mka/.linuxbrew/Cellar/libxml2/2.9.2/include/libxml2 --with-xml2-lib=/home/mka/.linuxbrew/Cellar/libxml2/2.9.2/lib --with-xslt-dir=/home/mka/.linuxbrew/Cellar/libxslt/1.1.28_1 --with-iconv-include=/home/mka/.linuxbrew/Cellar/libiconv/1.14/include --with-iconv-lib=/home/mka/.linuxbrew/Cellar/libiconv/1.14/lib
checking if the C compiler accepts ... yes
Building nokogiri using packaged libraries.
*** 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/mka/bin/$(RUBY_BASE_NAME)
--help
--clean
--use-system-libraries
/home/mka/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- openssl (LoadError)
from /home/mka/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /home/mka/lib/ruby/2.2.0/net/https.rb:22:in `<top (required)>'
from /home/mka/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /home/mka/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /home/mka/lib/ruby/gems/2.2.0/gems/mini_portile-0.6.2/lib/mini_portile.rb:3:in `<top (required)>'
from /home/mka/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:128:in `require'
from /home/mka/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:128:in `rescue in require'
from /home/mka/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:39:in `require'
from extconf.rb:395:in `<main>'
extconf failed, exit code 1
Gem files will remain installed in /home/mka/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2 for inspection.
Results logged to /home/mka/lib/ruby/gems/2.2.0/extensions/x86_64-linux/2.2.0-static/nokogiri-1.6.6.2/gem_make.out
请问我该如何解决这个问题？
尝试使用： gem install nokogiri -- --use-system-libraries
请参阅"安装Nokogiri"