# Getting error when installing Nokogiri on Mac OS X for development **URL:** \ **Category:** Development\ **Created:** [August 17, 2016, 9:53pm UTC](https://meta.discourse.org/t/getting-error-when-installing-nokogiri-on-mac-os-x-for-development/48880 "2016-08-17T21:53:54Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![henrikbg](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/henrikbg/32/57512_2.png) [@henrikbg](https://meta.discourse.org/u/henrikbg)\ **Post date:** [August 17, 2016, 9:53pm UTC](https://meta.discourse.org/t/getting-error-when-installing-nokogiri-on-mac-os-x-for-development/48880/1 "2016-08-17T21:53:54Z")
Had an issue installing Nokogiri 1.6.8. ```plaintext Gem::Ext::BuildError: ERROR: Failed to build gem native extension. current directory: /Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.8/ext/nokogiri /Users/henrikberg/.rbenv/versions/2.2.3/bin/ruby -r ./siteconf20160817-24363-1goolmv.rb extconf.rb Using pkg-config version 1.1.7 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 2.1.0 checking for iconv.h... yes checking for gzdopen() in -lz... yes checking for iconv... yes ************************************************************************ IMPORTANT NOTICE: Building Nokogiri with a packaged version of libxml2-2.9.4. 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 libxml2-2.9.4.tar.gz into tmp/x86_64-apple-darwin15.4.0/ports/libxml2/2.9.4... OK Running 'configure' for libxml2 2.9.4... OK Running 'compile' for libxml2 2.9.4... ERROR, review '/Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.8/ext/nokogiri/tmp/x86_64-apple-darwin15.4.0/ports/libxml2/2.9.4/compile.log' to see what happened. Last lines are: ======================================================================== unsigned short* in = (unsigned short*) inb; ^ ~~~~~~~~~~~~~~~~~~~~ encoding.c:815:27: warning: cast from 'unsigned char *' to 'unsigned short *' increases required alignment from 1 to 2 [-Wcast-align] unsigned short* out = (unsigned short*) outb; ^ ~~~~~~~~~~~~~~~~~~~~~ 4 warnings generated. CC error.lo CC parserInternals.lo CC parser.lo CC tree.lo CC hash.lo CC list.lo CC xmlIO.lo xmlIO.c:1450:52: error: use of undeclared identifier 'LZMA_OK' ret = (__libxml2_xzclose((xzFile) context) == LZMA_OK ) ? 0 : -1; ^ 1 error generated. make[2]: *** [xmlIO.lo] 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=/Users/henrikberg/.rbenv/versions/2.2.3/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 /Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/mini_portile2-2.1.0/lib/mini_portile2/mini_portile.rb:366:in `block in execute': Failed to complete compile task (RuntimeError) from /Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/mini_portile2-2.1.0/lib/mini_portile2/mini_portile.rb:337:in `chdir' from /Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/mini_portile2-2.1.0/lib/mini_portile2/mini_portile.rb:337:in `execute' from /Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/mini_portile2-2.1.0/lib/mini_portile2/mini_portile.rb:111:in `compile' from /Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/mini_portile2-2.1.0/lib/mini_portile2/mini_portile.rb:150:in `cook' from extconf.rb:364: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:363:in `block in process_recipe' from extconf.rb:262:in `tap' from extconf.rb:262:in `process_recipe' from extconf.rb:555:in `
' To see why this extension failed to compile, please check the mkmf.log which can be found here: /Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-15/2.2.0-static/nokogiri-1.6.8/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.8 for inspection. Results logged to /Users/henrikberg/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-15/2.2.0-static/nokogiri-1.6.8/gem_make.out An error occurred while installing nokogiri (1.6.8), and Bundler cannot continue. Make sure that `gem install nokogiri -v '1.6.8'` succeeds before bundling. ``` I tried the `gem install nokogiri -v '1.6.8'` command, but didn’t work. Does anyone have a solution? --- _[View the full topic](https://meta.discourse.org/t/getting-error-when-installing-nokogiri-on-mac-os-x-for-development/48880)._