我一直试图在Mac OS 10.9.3上安装Nokogiri，无论我如何尝试，最终安装都会失败，并显示以下错误消息：
$ sudo gem install nokogiri -- --with-xml2-include=/usr/local/Cellar/libxml2/2.9.1/include/libxml2 --with-xml2-lib=/usr/local/Cellar/libxml2/2.9.1/lib --with-xslt-dir=/usr/local/Cellar/libxslt/1.1.28 --with-iconv-include=/usr/local/Cellar/libiconv/1.14/include --with-iconv-lib=/usr/local/Cellar/libiconv/1.14/lib
Building native extensions with: '--with-xml2-include=/usr/local/Cellar/libxml2/2.9.1/include/libxml2 --with-xml2-lib=/usr/local/Cellar/libxml2/2.9.1/lib --with-xslt-dir=/usr/local/Cellar/libxslt/1.1.28 --with-iconv-include=/usr/local/Cellar/libiconv/1.14/include --with-iconv-lib=/usr/local/Cellar/libiconv/1.14/lib'
This could take a while...
Building nokogiri using packaged libraries.
ERROR: Error installing nokogiri:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb --with-xml2-include=/usr/local/Cellar/libxml2/2.9.1/include/libxml2 --with-xml2-lib=/usr/local/Cellar/libxml2/2.9.1/lib --with-xslt-dir=/usr/local/Cellar/libxslt/1.1.28 --with-iconv-include=/usr/local/Cellar/libiconv/1.14/include --with-iconv-lib=/usr/local/Cellar/libiconv/1.14/lib
Building nokogiri using packaged libraries.
checking for iconv.h... yes
checking for iconv_open() in iconv.h... no
checking for iconv_open() in -liconv... no
checking for libiconv_open() in iconv.h... no
checking for libiconv_open() in -liconv... no
-----
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
--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=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/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 /Library/Ruby/Gems/2.0.0/gems/nokogiri-1.6.2.1 for inspection.
Results logged to /Library/Ruby/Gems/2.0.0/gems/nokogiri-1.6.2.1/ext/nokogiri/gem_make.out在遵循了很多在网上找到的帮助之后，包括使用brew来构建和安装libxml2和libxslt以及从源代码构建libiconv（如“ 安装Nokogiri ”中所述）之后，错误仍然存在。
尝试为Nokogiri运行安装时，似乎可以找到libxml2和libxslt，但不能找到libiconv。
任何对这些事情有更好了解的人都知道如何安装Nokogiri？
同时，我在github上打开了一张票：github.com/tenderlove/nokogiri/issues/442，其中包含更多信息。
—
Polarblau 2011年
这是解决OSX El Capitan上相同问题的链接，estebantorr.es
—
blog/2015/
“
—
Tin Man
sudo gem install nokogiri”。不要sudo用来安装gem或修改默认的Ruby。而是使用rbenv或RVM管理单独的Ruby。堆栈溢出对此进行了多次讨论。
您是否已尝试在安装nokogiri之前卸载xz？
—
lifeisfoo '16
gem install nokogiri，但是随后我使用RVM来管理Mac OS Ruby安装。libxml和libxslt与iconv无关，因此建议您在支持论坛的Nokogiri-talk上提问。我不记得在安装Nokogiri时遇到任何iconv问题，而且我在一堆机器上都有它。