 Building libxml0-0.0.0 for nokogiri with the following patches applied:     - 0000-Fix-parser-local-buffers-size-problems.patch     - 0000-Fix-entities-local-buffers-size-problems.patch     - 0000-Fix-an-error-in-previous-commit.patch     - 0000-Fix-potential-out-of-bound-access.patch     - 0000-Detect-excessive-entities-expansion-upon-replacement.patch     - 0000-Do-not-fetch-external-parsed-entities.patch     - 0000-Enforce-XML_PARSER_EOF-state-handling-through-the-pa.patch     - 0000-Improve-handling-of-xmlStopParser.patch     - 0000-Fix-a-couple-of-return-without-value.patch     - 0000-Keep-non-significant-blanks-node-in-HTML-parser.patch     - 0000-Do-not-fetch-external-parameter-entities.patch ************************************************************************ IMPORTANT!  Nokogiri builds and uses a packaged version of libxml0.  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 libxml0.  For example, libxml0-0.0.0 and higher are currently known to be broken and thus unsupported by nokogiri, due to compatibility problems and XPath optimization bugs. ************************************************************************ Extracting libxml0-0.0.0.tar.gz into tmp/x00_00-unknown-linux-gnu/ports/libxml0/0.0.0... OK Running patch with /home/user00000000/.gem/ruby/0.0.0/gems/nokogiri-0.0.0.0/ports/patches/libxml0/0000-Fix-parser-local-buffers-size-problems.patch... Running 'patch' for libxml0 0.0.0... ERROR, review 'tmp/x00_00-unknown-linux-gnu/ports/libxml0/0.0.0/patch.log' to see what happened. *** 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.  