title: ruby nokogiri gem install mac osx high sierra
body: <p>Trying to do a bundle install with new ruby on my OSX High Sierra (fresh install) and it keeps failing on this nokogiri gem. Here is the error logs:</p>
  
  <pre>
      $ sudo gem install nokogiri
      Building native extensions.  This could take a while...
      ERROR:  Error installing nokogiri:
      ERROR: Failed to build gem native extension.
  
      current directory: /Library/Ruby/Gems/2.3.0/gems/nokogiri-
      1.8.1/ext/nokogiri
      /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby -r 
      ./siteconf20171021-88037-tq6xex.rb extconf.rb
      checking if the C compiler accepts ... yes
      checking if the C compiler accepts -Wno-error=unused-command-line-
      argument-hard-error-in-future... no
      Building nokogiri using packaged libraries.
      Using mini_portile version 2.3.0
      checking for iconv.h... yes
      checking for gzdopen() in -lz... yes
      checking for iconv... yes
  
   ************************************************************************
      IMPORTANT NOTICE:
  
      Building Nokogiri with a packaged version of libxml2-2.9.5.
  
      Team Nokogiri will keep on doing their best to provide security
      updates in a timely manner, but if this is a concern for you and want
      to use the system library instead; abort this installation process and
      reinstall nokogiri as follows:
  
      gem install nokogiri -- --use-system-libraries
          [--with-xml2-config=/path/to/xml2-config]
          [--with-xslt-config=/path/to/xslt-config]
  
      If you are using Bundler, tell it to use the option:
  
      bundle config build.nokogiri --use-system-libraries
      bundle install
  
      Note, however, that nokogiri is not fully compatible with arbitrary
      versions of libxml2 provided by OS/package vendors.
  ************************************************************************
      Extracting libxml2-2.9.5.tar.gz into tmp/x86_64-apple-
      darwin17/ports/libxml2/2.9.5... OK
      Running 'configure' for libxml2 2.9.5... OK
      Running 'compile' for libxml2 2.9.5... ERROR, review 
      '/Library/Ruby/Gems/2.3.0/gems/nokogiri-1.8.1/ext/nokogiri/tmp/x86_64-
      apple-darwin17/ports/libxml2/2.9.5/compile.log' to see what happened. 
      Last lines are:
  ========================================================================
      CCLD     libxml2.la
      CC       testdso.lo
      CCLD     testdso.la
      CC       xmllint.o
      CCLD     xmllint
      ld: warning: ignoring file 
      /usr/local/Cellar/xz/5.2.2/lib/liblzma.dylib, file was built for x86_64 
      which is not the architecture being linked (i386): 
      /usr/local/Cellar/xz/5.2.2/lib/liblzma.dylib
      Undefined symbols for architecture i386:
      "_lzma_auto_decoder", referenced from:
        _xz_head in libxml2.a(xzlib.o)
      "_lzma_code", referenced from:
        _xz_decomp in libxml2.a(xzlib.o)
      "_lzma_end", referenced from:
        ___libxml2_xzclose in libxml2.a(xzlib.o)
      "_lzma_properties_decode", referenced from:
        _is_format_lzma in libxml2.a(xzlib.o)
      ld: symbol(s) not found for architecture i386
      clang: error: linker command failed with exit code 1 (use -v to see 
      invocation)
      make[2]: *** [xmllint] Error 1
      make[1]: *** [all-recursive] Error 1
      make: *** [all] Error 2
  ========================================================================
      *** 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/2.3/usr/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
      /Library/Ruby/Gems/2.3.0/gems/mini_portile2-
      2.3.0/lib/mini_portile2/mini_portile.rb:402:in `block in execute': 
      Failed to complete compile task (RuntimeError)
      from /Library/Ruby/Gems/2.3.0/gems/mini_portile2-
      2.3.0/lib/mini_portile2/mini_portile.rb:373:in `chdir'
      from /Library/Ruby/Gems/2.3.0/gems/mini_portile2-
      2.3.0/lib/mini_portile2/mini_portile.rb:373:in `execute'
      from /Library/Ruby/Gems/2.3.0/gems/mini_portile2-
      2.3.0/lib/mini_portile2/mini_portile.rb:115:in `compile'
      from /Library/Ruby/Gems/2.3.0/gems/mini_portile2-
      2.3.0/lib/mini_portile2/mini_portile.rb:154:in `cook'
      from extconf.rb:365:in `block (2 levels) in process_recipe'
      from extconf.rb:257:in `block in chdir_for_build'
      from extconf.rb:256:in `chdir'
      from extconf.rb:256:in `chdir_for_build'
      from extconf.rb:364:in `block in process_recipe'
      from extconf.rb:262:in `tap'
      from extconf.rb:262:in `process_recipe'
      from extconf.rb:548:in `'
  
      To see why this extension failed to compile, please check the mkmf.log 
      which can be found here:
  
      /Library/Ruby/Gems/2.3.0/extensions/universal-darwin-17/2.3.0/nokogiri-
      1.8.1/mkmf.log
  
      extconf failed, exit code 1
  
      Gem files will remain installed in 
      /Library/Ruby/Gems/2.3.0/gems/nokogiri-1.8.1 for inspection.
      Results logged to /Library/Ruby/Gems/2.3.0/extensions/universal-darwin-
      17/2.3.0/nokogiri-1.8.1/gem_make.out
  
  </pre>