While loading a Thin webserver for a sinatra app I keep getting
Unable to load the EventMachine C extension; To use the pure-ruby reactor, require em/pure_ruby'<path>/vendor/bundle/ruby/1.9.1/gems/eventmachine-1.0.0.rc.4/lib/eventmachine.rb:8:in `require': cannot load such file -- rubyeventmachine (LoadError)
from <path>/vendor/bundle/ruby/1.9.1/gems/eventmachine-1.0.0.rc.4/lib/eventmachine.rb:8:in `<top (required)>'
from <path>/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin.rb:7:in `require'
from <path>/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin.rb:7:in `<top (required)>'
from <path>/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/bin/thin:5:in `require'
from <path>/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/bin/thin:5:in `<top (required)>'
from <path>/vendor/bundle/ruby/1.9.1/bin/thin:19:in `load'
from <path>/vendor/bundle/ruby/1.9.1/bin/thin:19:in `<main>'
In my Mac OSX I boot the server without any problems but in my server which is a
Red Hat Enterprise Linux Server release 6.2 (Santiago)
I can't start my app.
I'm using rvm 1.18.5 and ruby-1.9.3-p374
Regards and thanks in advance.
Anyone came across this issue?
I've worked around the problem dumping most of my Bundler configured gems and installing them directly on my global gemset. I had to remove all Bundler references from my Sinatra load up code and use only rubygems instead.
Right now I only need Bundler for testing with cucumber and deployment with capistrano.
try reinstall the gem 'eventmachine':
$ gem uninstall eventmachine
$ gem install eventmachine
or
$ bundle install
see: https://stackoverflow.com/a/15140634/445908
I fixed my "Unable to load the EventMachine C extension" error by uninstalling homebrew's version of ruby 2.5. See this comment on Rails/Ruby Error When Creating Database: Unable to load the EventMachine C extension
Related
What must I do when I want to copy an installed gem from one installation to another one without using the gem command?
I have to install SQLite3 on a server without an internet connection. Normally I can do it with a copy of the gem-file:
gem install --local sqlite3-1.4.0.gem --platform ruby
But for SQLite3 it needs a connection to the internet to get libraries to compile some binaries. The installation worked well on a computer with an internet connection.
So my idea was to take my successful installation on the same OS and same Ruby version and copy all the related components, but this did not work.
When I called:
require 'sequel'
db = Sequel.sqlite
I got this error:
LoadError: The specified module could not be found
d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sqlite3-1.4.1/lib/sqlite3/sqlite3_native.so
(Sequel::AdapterNotFound)
In the trace is:
d:/bin/Ruby26-x64/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require': LoadError: 126: The specified module could not be found. - d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sqlite3-1.4.1/lib/sqlite3/sqlite3_native.so (Sequel::AdapterNotFound)
from d:/bin/Ruby26-x64/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sqlite3-1.4.1/lib/sqlite3.rb:6:in `rescue in <top (required)>'
from d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sqlite3-1.4.1/lib/sqlite3.rb:2:in `<top (required)>'
from d:/bin/Ruby26-x64/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:130:in `require'
from d:/bin/Ruby26-x64/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:130:in `rescue in require'
from d:/bin/Ruby26-x64/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:34:in `require'
from d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sequel-5.17.0/lib/sequel/adapters/sqlite.rb:3:in `<top (required)>'
from d:/bin/Ruby26-x64/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from d:/bin/Ruby26-x64/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sequel-5.17.0/lib/sequel/database/connecting.rb:88:in `load_adapter'
from d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sequel-5.17.0/lib/sequel/database/connecting.rb:17:in `adapter_class'
from d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sequel-5.17.0/lib/sequel/database/connecting.rb:45:in `connect'
from d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sequel-5.17.0/lib/sequel/core.rb:121:in `connect'
from d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sequel-5.17.0/lib/sequel/core.rb:399:in `adapter_method'
from d:/bin/Ruby26-x64/lib/ruby/gems/2.6.0/gems/sequel-5.17.0/lib/sequel/core.rb:406:in `block (2 levels) in def_adapter_method'
from _ruby_version.rb:21:in `<main>'
but the file exists:
What is my error?
I'm using Windows Server 2016.
I found a precompiled version of SQLite3 in a GitHub issue which works for me, but I would like to use a newer version.
Use Bundler for this.
In short:
Run gem install bundler on each machine you're using.
Maintain a project Gemfile listing all requirements
Run bundle install when your Gemfile changes and bundle update to update to latest versions. This will generate the Gemfile.lock file.
Prefix ruby execution with bundle exec, e.g. bundle exec ruby myscript or bundle exec rails c
That's a brief summary, but please read up more on Bundler. It's an essential part of modern Ruby deployment.
You need to use the package option of bundler.
First you need to cache your dependencies into vendor/cache with:
bundle package --all --all-platforms
This will install all the dependencies of your Gemfile locally, then add the directory to your source code repository.
When deploying make sure you use bundle install --local to use the local version.
See the documentation for bundle package for more information.
I get the following error when trying to do anything with Ruby, specifically ruby gems:
/usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/2.4.0/yaml.rb:5:in `<top (required)>':
It seems your ruby installation is missing psych (for YAML output).
To eliminate this warning, please install libyaml and reinstall your ruby.
/usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:130:in `require': incompatible library version - /usr/local/rvm/gems/ruby-2.4.5/gems/psych-3.1.0/lib/psych.so (LoadError)
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:130:in `rescue in require'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:34:in `require'
from /usr/local/rvm/gems/ruby-2.4.5/gems/psych-3.1.0/lib/psych.rb:16:in `rescue in <top (required)>'
from /usr/local/rvm/gems/ruby-2.4.5/gems/psych-3.1.0/lib/psych.rb:13:in `<top (required)>'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/2.4.0/yaml.rb:6:in `<top (required)>'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems.rb:729:in `load_yaml'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/config_file.rb:349:in `load_file'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/config_file.rb:202:in `initialize'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/gem_runner.rb:79:in `new'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/gem_runner.rb:79:in `do_configuration'
from /usr/local/rvm/rubies/ruby-2.4.5/lib/ruby/site_ruby/2.4.0/rubygems/gem_runner.rb:44:in `run'
from /usr/local/rvm/rubies/ruby-2.4.5/bin/gem:21:in `<main>'
I believe the line of note is this one:
LoadError: incompatible library version - /usr/local/rvm/gems/ruby-2.4.5/gems/psych-3.1.0/lib/psych.so
I get this from gem install puppet, gem update, etc. I tried uninstalling and reinstalling libyaml, and same with Ruby. The error happened after I did bundle uninstall puppet to get it to stop pointing to the 6.3.0 gem and point to the 4.10.2 executable. I need Ruby to be able to use Rspec to test the modules. Does anyone know how I can fix this?
Without steps to reproduce the broken system it is hard to say what happened, but I can say in general how you can set this up correctly to use a specific version of Puppet.
Does this help? In the worst case, you can probably uninstall RVM and reinstall it.
Before I continue, let me note that Puppet 4.10.2 and 4.10.3 have both been removed from Rubygems. (Although I was able to install it with PDK.)
For the remainder I assume 4.10.4 instead (just to distinguish it from latest 4.10).
The recommended approach is to use Puppet Development Kit (pdk). If you download and install PDK, you probably just need to do these steps:
pdk convert
rm Gemfile.lock
PUPPET_GEM_VERSION=4.10.4 bundle update # If that version isn't already in PDK.
pdk test unit --puppet-version 4.10.4
If you don't want to go down the PDK path, you can try these alternatives:
Hardcode the version of Puppet you want in Gemfile.
gem 'puppet', '4.10.4'
Or:
gem 'puppet', '~> 4.10' # latest 4.10
Then update your bundle:
rm -f Gemfile.lock
bundle update
Or, you can implement the PUPPET_GEM_VERSION feature by adding this code (this is what I do, for what it's worth):
if puppetversion = ENV['PUPPET_GEM_VERSION']
gem 'puppet', puppetversion
else
gem 'puppet'
end
And then:
rm -f Gemfile.lock
PUPPET_GEM_VERSION='~> 4.10' bundle update
Now you can run your unit tests against a specific version of Puppet per normal:
bundle exec rake spec
Or however you set it up.
I can install charlock_holmes gem on opensuse, trying to open it up in irb quickly, I get this:
> irb
2.3.0 :001 > require 'charlock_holmes'
LoadError: /home/wpostma/.rvm/gems/ruby-2.3.0/gems/charlock_holmes-0.7.3/lib/charlock_holmes/charlock_holmes.so:
undefined symbol: _ZTIN6icu_538ByteSinkE - /home/wpostma/.rvm/gems/ruby-2.3.0/gems/charlock_holmes-0.7.3/lib/charlock_holmes/charlock_holmes.so
from /home/wpostma/.rvm/rubies/ruby-2.3.0/lib64/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /home/wpostma/.rvm/rubies/ruby-2.3.0/lib64/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /home/wpostma/.rvm/gems/ruby-2.3.0/gems/charlock_holmes-0.7.3/lib/charlock_holmes.rb:1:in `<top (required)>'
from /home/wpostma/.rvm/rubies/ruby-2.3.0/lib64/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:127:in `require'
from /home/wpostma/.rvm/rubies/ruby-2.3.0/lib64/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:127:in `rescue in require'
from /home/wpostma/.rvm/rubies/ruby-2.3.0/lib64/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:40:in `require'
from (irb):1
from /home/wpostma/.rvm/rubies/ruby-2.3.0/bin/irb:11:in `<main>'
2.3.0 :002 >
It looks to me like maybe something in charlock_holmes is incompatible with the libicu version inside tumbleweed.
I'm using ruby installed with rvm, and purging all my gemsets and reinstalling does not fix it. Any other ways to get charlock_holmes to work? Maybe I need to install a special copy of libicu (earlier, older) and point the gem at it?
Either of these works. For me the bundle config option works better.
This is a direct command to install the gem, directing it towards the correct libicu version:
gem install charlock_holmes -- --with-icu-dir=/usr/local
This is a command to tell which ever ruby project I install later on this system, will get gems installed by bundler to just work instead of breaking:
bundle config build.charlock_holmes "--with-icu-dir=/usr/local" --global
Since I'm using rvm the above bundle configuration seems to be "global" to that rvm environment only.
In my case, the bundle config is helpful as a large series of actions that would have otherwise failed (installing gems, and bootstrapping a large rails application) just worked.
When I run mongo3 after running gem install mongo3. I got the problems below
F, [2013-05-08T20:35:18.376873 #8487] FATAL -- : undefined method `helpers' for CollectionHelper:Module (NoMethodError)
/Users/shuxuan/.rvm/gems/ruby-1.9.3-p392#rails3tutorial2ndEd/gems/mongo3-0.1.5/lib/helpers/collection_helper.rb:15:in `<module:CollectionHelper>'
/Users/shuxuan/.rvm/gems/ruby-1.9.3-p392#rails3tutorial2ndEd/gems/mongo3-0.1.5/lib/helpers/collection_helper.rb:14:in `<top (required)>'
/Users/shuxuan/.rvm/gems/ruby-1.9.3-p392#rails3tutorial2ndEd/gems/mongo3-0.1.5/lib/mongo3.rb:49:in `load'
The workaround for now (from github discussion) is to use older sinatra.
gem uninstall sinatra
gem install sinatra -v 1.3.3
install ruby 1.9.3, devkit, mingw
gem install rails work good, but when i create new rails app - have bundler error
D:/Programes/Ruby193/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': 193: %1 эх ты хЄё яЁшыюцхэшхь Win32. - D:/Programes/Ruby193/lib/ruby/1.9.1/i386-mingw32/digest/sha1.so (LoadError)
from D:/Programes/Ruby193/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from D:/Programes/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/definition.rb:1:in `<top (required)>'
from D:/Programes/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler.rb:138:in `definition'
from D:/Programes/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/cli.rb:219:in `install'
from D:/Programes/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/vendor/thor/task.rb:22:in `run'
from D:/Programes/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'
from D:/Programes/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/vendor/thor.rb:263:in `dispatch'
from D:/Programes/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/vendor/thor/base.rb:386:in`start'
from D:/Programes/Ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/bin/bundle:13:in `<main>'
and commands like
D:\Work\ruby>gem help commands
ERROR: Loading command: server (LoadError)
193: %1 эх ты хЄё яЁшыюцхэшхь Win32. - D:/Programes/Ruby193/lib/ruby/1.9.1/i386-mingw32/digest/md5.so
ERROR: While executing gem ... (NameError)
uninitialized constant Gem::Commands::ServerCommand
file md5.so exists
what i forgot to do and may ruby don`t work on windows 7 x64?
I think you use cyrillic without # encoding: UTF-8, just add it to file where you use эх ты...
P.S.: откуда вообще там кирилица?
Also running Windows 7 x64, and I had this same problem crop up on me with 1.9.3-p0. Searched the web without success. Also tried copying in the "sha1.so" file from 1.9.2-p290 in case it was a problem with that particular library -- nope.
I'd suggest something about rubygems or bundler seems to break require, but the same bundler and rubygems code runs fine on 1.9.2. I get no problem running require "digest/sha1"
in my own bare test file with Ruby 1.9.3.
Reverting to Ruby 1.9.2-p290 fixed the problem for me for the moment.