ruby-on-rails - 在升级到 Rails 4.2.0 时由于 libxml2 在 Mac OS X Yosemite v.10.10.1 上安装 Nokogiri 出现问题

Question

我正在尝试在我的计算机上安装 Rails 4.2.0，但在安装 Nokogiri 时遇到问题。我按照“bundle install stopped at Nokogiri ”的第一个答案中的步骤进行操作，但是当我运行 brew install nokogiri 时，我得到以下信息:

Activating libxslt 1.1.28 (from /Users/dseibert/.rvm/rubies/ruby-2.2.0/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2/ports/x86_64-apple-darwin14.0.0/libxslt/1.1.28)...
checking for main() in -llzma... yes
checking for xmlParseDoc() in libxml/parser.h... no
checking for xmlParseDoc() in -lxml2... no
checking for xmlParseDoc() in -llibxml2... no
-----
libxml2 is missing.  Please locate mkmf.log to investigate how it is failing.
-----
*** 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
    --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/dseibert/.rvm/rubies/ruby-2.2.0/bin/$(RUBY_BASE_NAME)
    --help
    --clean
    --use-system-libraries
    --enable-static
    --disable-static
    --with-zlib-dir
    --without-zlib-dir
    --with-zlib-include
    --without-zlib-include=${zlib-dir}/include
    --with-zlib-lib
    --without-zlib-lib=${zlib-dir}/lib
    --enable-cross-build
    --disable-cross-build
    --with-xml2lib
    --without-xml2lib
    --with-libxml2lib
    --without-libxml2lib

extconf failed, exit code 1

Gem files will remain installed in /Users/dseibert/.rvm/rubies/ruby-2.2.0/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2 for inspection.
Results logged to /Users/dseibert/.rvm/rubies/ruby-2.2.0/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-14/2.2.0/nokogiri-1.6.6.2/gem_make.out

我找不到 mkmf 文件来定位我的 libxml2 文件的详细信息，而且我在 Ruby 源文件夹中没有看到 libxml2 文件或 Nokogiri 文件夹。

当我运行时 brew install libxml2 , 我得到 Warning: libxml2-2.9.2 already installed .

在评论之后，我得到了回复: Successfully installed nokogiri-1.6.6.2 .但是当我跑 sudo gem install rails ，我又回到了上面的错误。

Answer 1

尝试这个

gem install nokogiri -- --use-system-libraries=true --with-xml2-include=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/libxml2/

这适用于 OSX 10.11 El Capitan