Yosemite Mac OS X 10.10缺少nokogiri libiconv安装失败

尝试安装Nokogiri我得到以下错误

Maxims-MacBook-Air:ScrapingTheApple maximveksler$ gem install nokogiri
Fetching: nokogiri-1.6.2.1.gem (100%)
Building native extensions.  This could take a while...
Building nokogiri using packaged libraries.
ERROR:  Error installing nokogiri:
    ERROR: Failed to build gem native extension.
    /Users/maximveksler/.rvm/rubies/ruby-2.1.2/bin/ruby extconf.rb
Building nokogiri using packaged libraries.
-----
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=/Users/maximveksler/.rvm/rubies/ruby-2.1.2/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
extconf failed, exit code 1
Gem files will remain installed in /Users/maximveksler/.rvm/gems/ruby-2.1.2/gems/nokogiri-1.6.2.1 for inspection.
Results logged to /Users/maximveksler/.rvm/gems/ruby-2.1.2/extensions/x86_64-darwin-13/2.1.0-static/nokogiri-1.6.2.1/gem_make.out

nokogiri安装教程提供了解决方案:

# bash
brew unlink gcc
gem uninstall nokogiri
xcode-select --install
gem install nokogiri

如果你还没有Xcode 6.1，你可以从苹果开发者下载站点(附加工具一节)安装它，正如这篇博文所描述的。

我建议更新Oskar的答案，替换MacOSX10.9。sdk到MacOSX10.10。sdk，在OS X 10.10上测试

gem install nokogiri -- 
--with-iconv-lib=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/lib 
--with-iconv-include=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include

我成功了:

gem install nokogiri -- 
--with-iconv-lib=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/lib 
--with-iconv-include=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include

不含brew和其他东西

xcode-select --install 
gem install nokogiri -- --use-system-libraries

在我的情况下，我已经升级了Xcode，忘记安装命令行工具，所以安装无法运行编译器。

安装命令行工具:

xcode-select——安装

如果有人仍然不能像我一样解决上面提到的解决方案，那么这是备用的

install nokogiri -- --user-system-libraries

或使用bundle

bundle config build。nokogiri——use-system-libraries

包安装

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

这似乎是得到nokogiri安装，还不确定运行状态

brew install libiconv
gem install nokogiri -- --with-iconv-include=/usr/local/opt/libiconv/include/ --with-iconv-lib=/usr/local/opt/libiconv/lib/

安装日志:

Maxims-MacBook-Air:ScrapingTheApple maximveksler$ gem install nokogiri -- --with-iconv-include=/usr/local/opt/libiconv/include/ --with-iconv-lib=/usr/local/opt/libiconv/lib/
Building native extensions with: '--with-iconv-include=/usr/local/opt/libiconv/include/ --with-iconv-lib=/usr/local/opt/libiconv/lib/'
This could take a while...
Building nokogiri using packaged libraries.
Building libxml2-2.8.0 for nokogiri with the following patches applied:
    - 0001-Fix-parser-local-buffers-size-problems.patch
    - 0002-Fix-entities-local-buffers-size-problems.patch
    - 0003-Fix-an-error-in-previous-commit.patch
    - 0004-Fix-potential-out-of-bound-access.patch
    - 0005-Detect-excessive-entities-expansion-upon-replacement.patch
    - 0006-Do-not-fetch-external-parsed-entities.patch
    - 0007-Enforce-XML_PARSER_EOF-state-handling-through-the-pa.patch
    - 0008-Improve-handling-of-xmlStopParser.patch
    - 0009-Fix-a-couple-of-return-without-value.patch
    - 0010-Keep-non-significant-blanks-node-in-HTML-parser.patch
    - 0011-Do-not-fetch-external-parameter-entities.patch
************************************************************************
IMPORTANT!  Nokogiri builds and uses a packaged version of libxml2.
If this is a concern for you and you want to use the system library
instead, abort this installation process and reinstall nokogiri as
follows:
    gem install nokogiri -- --use-system-libraries
If you are using Bundler, tell it to use the option:
    bundle config build.nokogiri --use-system-libraries
    bundle install
However, note that nokogiri does not necessarily support all versions
of libxml2.
For example, libxml2-2.9.0 and higher are currently known to be broken
and thus unsupported by nokogiri, due to compatibility problems and
XPath optimization bugs.
************************************************************************
Building libxslt-1.1.28 for nokogiri with the following patches applied:
    - 0001-Adding-doc-update-related-to-1.1.28.patch
    - 0002-Fix-a-couple-of-places-where-f-printf-parameters-wer.patch
    - 0003-Initialize-pseudo-random-number-generator-with-curre.patch
    - 0004-EXSLT-function-str-replace-is-broken-as-is.patch
    - 0006-Fix-str-padding-to-work-with-UTF-8-strings.patch
    - 0007-Separate-function-for-predicate-matching-in-patterns.patch
    - 0008-Fix-direct-pattern-matching.patch
    - 0009-Fix-certain-patterns-with-predicates.patch
    - 0010-Fix-handling-of-UTF-8-strings-in-EXSLT-crypto-module.patch
    - 0013-Memory-leak-in-xsltCompileIdKeyPattern-error-path.patch
    - 0014-Fix-for-bug-436589.patch
    - 0015-Fix-mkdir-for-mingw.patch
************************************************************************
IMPORTANT!  Nokogiri builds and uses a packaged version of libxslt.
If this is a concern for you and you want to use the system library
instead, abort this installation process and reinstall nokogiri as
follows:
    gem install nokogiri -- --use-system-libraries
If you are using Bundler, tell it to use the option:
    bundle config build.nokogiri --use-system-libraries
    bundle install
************************************************************************
Successfully installed nokogiri-1.6.2.1
Parsing documentation for nokogiri-1.6.2.1
Installing ri documentation for nokogiri-1.6.2.1
Done installing documentation for nokogiri after 4 seconds
1 gem installed

在10.9的XCode 6.1上，我不得不抛出--use-system-libraries，因为自定义的libxslt正在消亡。

gem install nokogiri -- --with-iconv-lib=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/lib --with-iconv-include=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include --use-system-libraries

我也遇到过这个问题，原来是由于在Mavericks下安装了macports，而没有将设置迁移到Yosemite。

按照这里的说明:

http://trac.macports.org/wiki/Migration

允许我安装旧版本的Nokogiri (1.5.x)，这是一个依赖于respect -puppet

我有同样的问题，在安装命令行工具后，

gem install nokogiri -- --with-iconv-lib=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/lib --with-iconv-include=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include --use-system-libraries

不一定有效，因为它一直说检查软件更新(它已经是最新版本)。相反，我使用了sudo gem install nokogiri --pre，它在最后工作

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