Nokogiri 1.5.9 gem does not install on Mac OS X Mavericks?

Question

Last night my system updated to Maverick and now I can not install Nokogiri from my gemfile. It complains that it can not find libxml2, but Maverick ships with libxml2. I have also tried

brew install --development libxml2

And:

brew install --development libxslt

and I still see the same error message. I have pasted the error messages below, can someone take a look and tell me what I should try next?

mapte:config-renderer mapte$  gem install nokogiri -v '1.5.9'
Building native extensions.  This could take a while...
ERROR:  Error installing nokogiri:
        ERROR: Failed to build gem native extension.

        /usr/local/var/rbenv/versions/1.9.2-p180/bin/ruby extconf.rb
checking for libxml/parser.h... no
-----
libxml2 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=/usr/local/var/rbenv/versions/1.9.2-p180/bin/ruby
    --with-zlib-dir
    --without-zlib-dir
        --with-zlib-include
        --without-zlib-include=${zlib-dir}/include
        --with-zlib-lib
        --without-zlib-lib=${zlib-dir}/lib
        --with-iconv-dir
        --without-iconv-dir
        --with-iconv-include
        --without-iconv-include=${iconv-dir}/include
        --with-iconv-lib
        --without-iconv-lib=${iconv-dir}/lib
        --with-xml2-dir
        --without-xml2-dir
        --with-xml2-include
        --without-xml2-include=${xml2-dir}/include
        --with-xml2-lib
        --without-xml2-lib=${xml2-dir}/lib
        --with-xslt-dir
        --without-xslt-dir
        --with-xslt-include
    --without-xslt-include=${xslt-dir}/include
    --with-xslt-lib
    --without-xslt-lib=${xslt-dir}/lib
    --with-libxslt-config
    --without-libxslt-config
    --with-pkg-config
    --without-pkg-config
    --with-libxml-2.0-config
    --without-libxml-2.0-config
    --with-libiconv-config
        --without-libiconv-config


Gem files will remain installed in /usr/local/var/rbenv/versions/1.9.2-
p180/lib/ruby/gems/1.9.1/gems/nokogiri-1.5.9 for inspection.
Results logged to /usr/local/var/rbenv/versions/1.9.2-p180/lib/ruby/gems/1.9.1/gems/nokogiri-1.5.9/ext/nokogiri/gem_make.out 

Answer 1

For me I had to install the developer tools:

  xcode-select --install

Then be sure to open the xcode app and accept the license.
I tried to do it from the command line but it didn't work.