Rails/OSX sample: fails to run on a separate OSX machine (nokogiri.bundle, Library not loaded)

[dennislysenko]

Hello!

Fantastic library here! I'm having some trouble though. macOS Sierra, ruby 2.2.2, rails 5.0.0.1 -- I've created a new rails project (rails new ExecutableTest). I've compiled it into an executable using rb2exe --rails --target=osx, which works fantastically on my local machine. (There are a few more intricacies relating to getting it to use Sqlite3 db, I basically had to pass the path to the db as an environment variable containing the absolute path so I could use the executable from anywhere.)

When I try to run it on a Parallels VM of macOS Sierra I just spun up, however, I get this error:

os-x-10:Desktop jaqen$ DB_PATH=`pwd`/release.sqlite3 ./output 
/tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.8/lib/nokogiri.rb:32:in `require': dlopen(/tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.8/lib/nokogiri/nokogiri.bundle, 9): Library not loaded: /usr/local/opt/libxml2/lib/libxml2.2.dylib (LoadError)
  Referenced from: /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.8/lib/nokogiri/nokogiri.bundle
  Reason: Incompatible library version: nokogiri.bundle requires version 12.0.0 or later, but libxml2.2.dylib provides version 10.0.0 - /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.8/lib/nokogiri/nokogiri.bundle
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.8/lib/nokogiri.rb:32:in `rescue in <top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.8/lib/nokogiri.rb:28:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/loofah-2.0.3/lib/loofah.rb:3:in `require'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/loofah-2.0.3/lib/loofah.rb:3:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/rails-html-sanitizer-1.0.3/lib/rails-html-sanitizer.rb:2:in `require'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/rails-html-sanitizer-1.0.3/lib/rails-html-sanitizer.rb:2:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/sanitize_helper.rb:2:in `require'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/sanitize_helper.rb:2:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/text_helper.rb:32:in `<module:TextHelper>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/text_helper.rb:29:in `<module:Helpers>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/text_helper.rb:6:in `<module:ActionView>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/text_helper.rb:4:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/form_tag_helper.rb:18:in `<module:FormTagHelper>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/form_tag_helper.rb:14:in `<module:Helpers>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/form_tag_helper.rb:8:in `<module:ActionView>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/form_tag_helper.rb:6:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/form_helper.rb:4:in `require'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers/form_helper.rb:4:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers.rb:50:in `<module:Helpers>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers.rb:4:in `<module:ActionView>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/actionview-5.0.0.1/lib/action_view/helpers.rb:3:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/context.rb:7:in `<module:Context>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/context.rb:6:in `<module:Rails>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/context.rb:5:in `<module:Sprockets>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/context.rb:4:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sprockets-rails-3.2.0/lib/sprockets/railtie.rb:7:in `require'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sprockets-rails-3.2.0/lib/sprockets/railtie.rb:7:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sass-rails-5.0.6/lib/sass/rails/railtie.rb:3:in `require'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sass-rails-5.0.6/lib/sass/rails/railtie.rb:3:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sass-rails-5.0.6/lib/sass/rails.rb:11:in `require'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sass-rails-5.0.6/lib/sass/rails.rb:11:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sass-rails-5.0.6/lib/sass-rails.rb:1:in `require'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/sass-rails-5.0.6/lib/sass-rails.rb:1:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:76:in `require'
    from /tmp/selfextract.hRLsK1/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
    from /tmp/selfextract.hRLsK1/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:72:in `each'
    from /tmp/selfextract.hRLsK1/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:72:in `block in require'
    from /tmp/selfextract.hRLsK1/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:61:in `each'
    from /tmp/selfextract.hRLsK1/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:61:in `require'
    from /tmp/selfextract.hRLsK1/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler.rb:134:in `require'
    from /private/tmp/selfextract.hRLsK1/lib/app/config/application.rb:7:in `<top (required)>'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:88:in `require'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:88:in `block in server'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:85:in `tap'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:85:in `server'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
    from /tmp/selfextract.hRLsK1/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands.rb:18:in `<top (required)>'
    from bin/rails:9:in `require'
    from bin/rails:9:in `<main>'
os-x-10:Desktop jaqen$ 

Any ideas? Perhaps I am misunderstanding the use-case here...is rb2exe meant to make a redistributable binary of a ruby program (incl rails server)? Or perhaps I need to take some extra step to properly precompile libxml2 for nokogiri? Any response is appreciated.

[loureirorg]

Hi @dennislysenko.

Can you please compile with this environment variable:

export NOKOGIRI_USE_SYSTEM_LIBRARIES=1
rb2exe --rails --target=osx

Then, please let me know if works.

[dennislysenko]

Thanks for the response! I did that and tried it on my parallels VM again, and got a similar error with a smaller stacktrace:

os-x-10:Desktop jaqen$ DB_PATH=`pwd`/release.sqlite3 ./output 
/tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.0/lib/nokogiri.rb:28:in `require': dlopen(/tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.0/lib/nokogiri/nokogiri.bundle, 9): Library not loaded: /usr/local/opt/libxml2/lib/libxml2.2.dylib (LoadError)
  Referenced from: /tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.0/lib/nokogiri/nokogiri.bundle
  Reason: Incompatible library version: nokogiri.bundle requires version 12.0.0 or later, but libxml2.2.dylib provides version 10.0.0 - /tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.0/lib/nokogiri/nokogiri.bundle
    from /tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/nokogiri-1.6.0/lib/nokogiri.rb:28:in `<top (required)>'
    from /tmp/selfextract.ErG61U/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:76:in `require'
    from /tmp/selfextract.ErG61U/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
    from /tmp/selfextract.ErG61U/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:72:in `each'
    from /tmp/selfextract.ErG61U/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:72:in `block in require'
    from /tmp/selfextract.ErG61U/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:61:in `each'
    from /tmp/selfextract.ErG61U/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:61:in `require'
    from /tmp/selfextract.ErG61U/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler.rb:134:in `require'
    from /private/tmp/selfextract.ErG61U/lib/app/config/application.rb:7:in `<top (required)>'
    from /tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:88:in `require'
    from /tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:88:in `block in server'
    from /tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:85:in `tap'
    from /tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:85:in `server'
    from /tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
    from /tmp/selfextract.ErG61U/lib/vendor/ruby/2.2.0/gems/railties-5.0.0.1/lib/rails/commands.rb:18:in `<top (required)>'
    from bin/rails:9:in `require'
    from bin/rails:9:in `<main>'

As you can see I also tried downgrading nokogiri versions to the minimum for rails 5, which unfortunately didn't work either.

[dennislysenko]

Here is some context about my development machine. I think based on the stack trace on the VM, it is trying to load my homebrew install of libxml2 rather than a bundled one, finding that this doesn't exist on the VM, and falling back to /usr/lib/libxml2.2.dylib which only provides version 10.0.0 on macOS sierra (on both my VM and my development machine.)

[~/dev/ExecutableTest_RBA]$ otool -L /usr/lib/libxml2.2.dylib                                                                                                                                                                                             [master][ruby-2.2.2]
/usr/lib/libxml2.2.dylib:
    /usr/lib/libxml2.2.dylib (compatibility version 10.0.0, current version 10.9.0)
    /usr/lib/libicucore.A.dylib (compatibility version 1.0.0, current version 57.1.0)
    /usr/lib/liblzma.5.dylib (compatibility version 6.0.0, current version 6.3.0)
    /usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.8)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1238.0.0)
[~/dev/ExecutableTest_RBA]$ otool -L /usr/local/opt/libxml2/lib/libxml2.2.dylib                                                                                                                                                                           [master][ruby-2.2.2]
/usr/local/opt/libxml2/lib/libxml2.2.dylib:
    /usr/local/opt/libxml2/lib/libxml2.2.dylib (compatibility version 12.0.0, current version 12.4.0)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1226.10.1)
    /usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.5)
    /usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)

[dennislysenko]

Perhaps using the traveling ruby prepackaged nokogiri could help circumvent this issue? Not entirely sure myself.