OSX libxml2 error fix

Ohhh noes.txt

Look like brew libxml2 and the one bundled with osx are fighting

/Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/libxml-ruby-1.1.4/lib/libxml_ruby.bundle: dlsym(0x7ffb44ee7880, Init_libxml_ruby): symbol not found - /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/libxml-ruby-1.1.4/lib/libxml_ruby.bundle (LoadError)
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/libxml-ruby-1.1.4/lib/libxml.rb:9
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/bundler-1.0.15/lib/bundler/runtime.rb:68:in `require'
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/bundler-1.0.15/lib/bundler/runtime.rb:68:in `require'
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/bundler-1.0.15/lib/bundler/runtime.rb:66:in `each'
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/bundler-1.0.15/lib/bundler/runtime.rb:66:in `require'
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/bundler-1.0.15/lib/bundler/runtime.rb:55:in `each'
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/bundler-1.0.15/lib/bundler/runtime.rb:55:in `require'
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/bundler-1.0.15/lib/bundler.rb:120:in `require'
	from /Users/unixcharles/projects/teambox/config/application.rb:7
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/railties-3.1.0/lib/rails/commands.rb:52:in `require'
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/railties-3.1.0/lib/rails/commands.rb:52
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/railties-3.1.0/lib/rails/commands.rb:49:in `tap'
	from /Users/unixcharles/.rvm/gems/ruby-1.8.7-p352/gems/railties-3.1.0/lib/rails/commands.rb:49
	from script/rails:6:in `require'
	from script/rails:6

This fixed it for me:

brew update
brew uninstall libxml2
brew install libxml2 --with-xml2-config
brew link libxml2
gem uninstall libxml-ruby
bundle

Thank you for this, I had to rebuild the system gem also:

gem uninstall libxml-ruby
gem install libxml-ruby -v 1.1.4

You could probably remove it all together and just install it via bundler so long as no other apps are relying on it.

Glad this cloud be helpful to someone else.

That's what I did, I just removed them all

Thank you so much for this one!

No problem!

If it helps anyone:

On High Sierra, I have to follow the follow to get it to work (same as the original suggestion, but note the --force)

brew update
brew uninstall libxml2
brew install libxml2 --with-xml2-config
brew link libxml2 --force
gem uninstall libxml-ruby
bundle

@khash this worked perfectly for me. Thanks a lot 👍

Yes. Thank you very much @khash

(y)

Worked great! Thanks @khash!

If you don't want to link libxml2:

brew install libxml2 --with-xml2-config
gem install libxml-ruby -- --with-xml2-config=/usr/local/opt/libxml2/bin/xml2-config
bundle

@tamalw I owe you so many beers!

Since this was a top result while googling, I'll share my experience resolving this and the solution I found.

System: OSX 10.14
Homebrew: 2.7.2

The flag --with-xml2-config doesn't seem to work anymore with brew (I got a usage error with the command above). This comment from a Twilio issue was helpful in that it explained brew isn't needed and how to figure out the correct path for the libxml2 headers using xcrun

gem install libxml-ruby -v '3.2.1' -- --with-xml2-include=`xcrun --show-sdk-path`/usr/include/libxml2

All credit to @CodingMarkus and @raldred for their comments on the Twilio issue #315