Rails: Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)

Question

My website has been broken since Dreamhost upgraded their servers a couple of weeks ago. I have been tearing my hair out trying to get it fixed and made some progress but am stuck on what is hopefully the final issue.

I'm using Rails 3.1.1 on Ruby 1.8.7 and get presented with a 'Ruby (Rack) application could not be started error' from PhusionPassenger. It states that it 'Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)'. Searching for this on Dreamhost's wiki has suggested a solution to install 'therubyracer' gem.

So I updated my gemfile with the suggested gem like so:

gem 'therubyracer', '~> 0.9.9'

EDIT: I have also tried adding to the file with:

gem 'therubyracer', :platforms => :ruby

but it hasn't made a difference.

Then bundle installed on my Macbook (running OS X 10.5.8) without hitch. However, this fails when I run 'cap deploy' to put on Dreamhost; I see an error when it attempts to install libv8 which therubyracer depends on.

Anyone know how to get this to install correctly or any other working solution?

Any other info can be provided upon request.

Full error feedback from Terminal:

executing "cd /home/futureproof/abunchofletters.co.uk/releases/20111118003703 && bundle install --gemfile /home/futureproof/abunchofletters.co.uk/releases/20111118003703/Gemfile --path /home/futureproof/.gems/bundle --deployment --quiet --without development test" servers: ["abunchofletters.co.uk"] [abunchofletters.co.uk] executing command ** [out :: abunchofletters.co.uk] Unfortunately, a fatal error has occurred. Please report this error to the Bundler issue tracker at https://github.com/carlhuda/bundler/issues so that we can fix it. Thanks! ** [out :: abunchofletters.co.uk] /usr/lib/ruby/1.8/rubygems/installer.rb:483:in build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError) ** [out :: abunchofletters.co.uk] ** [out :: abunchofletters.co.uk] /usr/bin/ruby1.8 extconf.rb ** [out :: abunchofletters.co.uk] *** extconf.rb failed *** ** [out :: abunchofletters.co.uk] Could not create Makefile due to some reason, probably lack of ** [out :: abunchofletters.co.uk] necessary libraries and/or headers. Check the mkmf.log file for more ** [out :: abunchofletters.co.uk] details. You may need configuration options. ** [out :: abunchofletters.co.uk] ** [out :: abunchofletters.co.uk] Provided configuration options: ** [out :: abunchofletters.co.uk] --with-opt-dir ** [out :: abunchofletters.co.uk] --without-opt-dir ** [out :: abunchofletters.co.uk] --with-opt-include ** [out :: abunchofletters.co.uk] --without-opt-include=${opt-dir}/include ** [out :: abunchofletters.co.uk] --with-opt-lib ** [out :: abunchofletters.co.uk] --without-opt-lib=${opt-dir}/lib ** [out :: abunchofletters.co.uk] --with-make-prog ** [out :: abunchofletters.co.uk] --without-make-prog ** [out :: abunchofletters.co.uk] --srcdir=. ** [out :: abunchofletters.co.uk] --curdir ** [out :: abunchofletters.co.uk] --ruby=/usr/bin/ruby1.8 ** [out :: abunchofletters.co.uk] extconf.rb:13: uninitialized constant Gem (NameError) ** [out :: abunchofletters.co.uk] Checking for Python... ** [out :: abunchofletters.co.uk] ** [out :: abunchofletters.co.uk] Gem files will remain installed in /home/futureproof/.gems/bundle/ruby/1.8/gems/libv8-3.3.10.4 for inspection. ** [out :: abunchofletters.co.uk] Results logged to /home/futureproof/.gems/bundle/ruby/1.8/gems/libv8-3.3.10.4/ext/libv8/gem_make.out ** [out :: abunchofletters.co.uk] from /usr/lib/ruby/1.8/rubygems/installer.rb:446:ineach' ** [out :: abunchofletters.co.uk] from /usr/lib/ruby/1.8/rubygems/installer.rb:446:in build_extensions' ** [out :: abunchofletters.co.uk] from /usr/lib/ruby/1.8/rubygems/installer.rb:198:ininstall' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/source.rb:90:in install' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/rubygems_integration.rb:78:inpreserve_paths' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/source.rb:89:in install' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/installer.rb:73:ininstall_gem_from_spec' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/rubygems_integration.rb:93:in with_build_args' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/installer.rb:72:ininstall_gem_from_spec' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/installer.rb:56:in run' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/installer.rb:55:inrun' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/installer.rb:12:in install' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/cli.rb:219:ininstall' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/vendor/thor/task.rb:22:in send' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/vendor/thor/task.rb:22:inrun' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/vendor/thor/invocation.rb:118:in invoke_task' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/vendor/thor.rb:263:indispatch' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/lib/bundler/vendor/thor/base.rb:386:in start' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/gems/bundler-1.1.rc/bin/bundle:13 ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/bin/bundle:19:inload' ** [out :: abunchofletters.co.uk] from /home/futureproof/.gems/bin/bundle:19 command finished in 13170ms *** [deploy:update_code] rolling back * executing "rm -rf /home/futureproof/abunchofletters.co.uk/releases/20111118003703; true" servers: ["abunchofletters.co.uk"] [abunchofletters.co.uk] executing command command finished in 563ms failed: "sh -c 'cd /home/futureproof/abunchofletters.co.uk/releases/20111118003703 && bundle install --gemfile /home/futureproof/abunchofletters.co.uk/releases/20111118003703/Gemfile --path /home/futureproof/.gems/bundle --deployment --quiet --without development test'" on abunchofletters.co.uk

Jim Clouse · Accepted Answer · 2012-03-11 14:47:33Z

157

If you're on Ubuntu, install nodejs

sudo apt-get install nodejs

answered Mar 11, 2012 at 14:47

Jim Clouse

9,0606 gold badges34 silver badges25 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

chenio Over a year ago

thaks, greetings from Colombia

Jerome Over a year ago

Rather than thanking, I do find it curious that for Ubuntu 14.04 installing nodejs leads to a successful result while libv8-dev does not.

Darkaico Over a year ago

this solution also work for macos brew install node

Wolfram Arnold · Accepted Answer · 2012-02-15 09:01:52Z

38

libv8 is an OS library; you'll need to install the correct Linux system library. If you're running Ubuntu, it's

sudo apt-get install libv8-dev

Alternatively, you can install node.js which is available as a Debian/Ubuntu package for various distros, e.g. http://ppa.launchpad.net/chris-lea/node.js/ubuntu

You may save yourself a lot of trouble by deploying on Heroku instead where you don't have to manage the OS or components for gems.

answered Feb 15, 2012 at 9:01

Wolfram Arnold

7,3015 gold badges47 silver badges64 bronze badges

2 Comments

Rich Over a year ago

I don't have sudo permission on a shared server but I managed to instal node.js which solved it. I'm thinking of giving Heroku a proper go now though as there seem to be never ending problems getting a Rails 3 site working with the assets pipeline.

Wolfram Arnold Over a year ago

@Rich, Heroku is definitely the best option. As developer I find I don't want to deal with all that it takes to keep the server up, secured, patches installed, backed up, etc. It's time-consuming at best, highly brittle at worst. Let the experts do it who do it well.

Manuel Betancourt Garza · Accepted Answer · 2011-12-01 23:39:54Z

11

i use this gems on Dreamhost with Rails 3.1 for the Asset Pipeline

group :assets do
  gem 'execjs'
  gem 'therubyracer', :platforms => :ruby
  gem 'johnson'
  gem 'sass-rails', "  ~> 3.1.0"
  gem 'coffee-rails', "~> 3.1.0"
  gem 'uglifier'
end

therubyracer as precompiler, and johnson as runtime.

This work for me in 2 Rails 3.1 apps hosted by Dreamhost.

answered Dec 1, 2011 at 23:39

Manuel Betancourt Garza

1112 bronze badges

2 Comments

Rich Over a year ago

Thanks for the comment. Are you on a shared Dreamhost server or VPS? What version of Ruby are you running?

drmwndr Over a year ago

In 2021, Rails 4.2.10, This answer solved my problem on Dreamhost Shared Server

Jose Paez · Accepted Answer · 2020-08-23 22:40:12Z

11

You just need to get libv8, for OS with Brew just do:

brew install v8

answered Aug 23, 2020 at 22:40

Jose Paez

8531 gold badge12 silver badges19 bronze badges

Comments

Mateu · Accepted Answer · 2012-12-19 12:09:51Z

6

I'm in dreamhost shared server.

I installed nodejs without using root/sudo. On the server:

#download node js (check last version from web)
$ wget http://nodejs.org/dist/v0.8.16/node-v0.8.16-linux-x86.tar.gz
#untar
$ tar xzf node-v0.8.16-linux-x86.tar.gz

Finnaly add its path to the deploy.rb, adding the following line (some more paths are added in this case):

default_environment["PATH"] = ":/home/myUser/soft/node-v0.8.16-linux-x86/bin:/home/myUser/.gems/bin:/usr/lib/ruby/gems/1.8/bin/:$PATH"

You are done

answered Dec 19, 2012 at 12:09

Mateu

2,7186 gold badges39 silver badges56 bronze badges

2 Comments

Sunny Over a year ago

In my case, the PATH to add to deploy.rb was simply: default_environment["PATH"] = "$HOME/local/bin:$PATH"

Paco Abato Over a year ago

I'm trying your solution but I can't find the deploy.rb file. How can I find it? Must I create it somewhere?

Michael Durrant · Accepted Answer · 2011-11-18 01:42:30Z

2

I just a saw a presentation on this.

I've used rubytheracer up till now. Apparently it ain't so great. And it's huge.

But you can use any javascript runtime.

The other two recommended are execjs and node.js (which is very hot right now).

Make sure to gem install the selected gem and then bundle install or bundle update for your app.

One other note is that you should switch to 1.9.2 also.
Install RVM (bash < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)) and you can have both 1.8.7 and 1.9.2 side-by-side.

edited Nov 18, 2011 at 1:42

answered Nov 18, 2011 at 1:36

Michael Durrant

97.1k102 gold badges352 silver badges536 bronze badges

Comments

Sri Murthy Upadhyayula · Accepted Answer · 2012-07-21 09:19:37Z

1

I would suggest installing Nodejs. It worked for me.

Just go to your terminal and type in :

sudo apt-get install node.js

Enter your password...And press 'Y' whenever it asks for a confirmation. I hope this helps !!!

answered Jul 21, 2012 at 9:19

Sri Murthy Upadhyayula

26.7k2 gold badges20 silver badges20 bronze badges

1 Comment

Rich Over a year ago

As I said on Wolfram's answer, I don't have sudo permission on my shared server but this might work well for those that do.

Jakub Czaplicki · Accepted Answer · 2013-02-22 13:43:55Z

I've just hit the very same problem on my Win7 dev machine. It looks like installing https://github.com/hiranpeiris/therubyracer_for_windows and adding gem 'therubyracer' to the Gemfile sorts things out.

Before:

$ rails generate
c:/Ruby193/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
    from c:/Ruby193/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:5:in `<module:ExecJS>'
(...)

This basically means that Rails needs rubyracer and libv8.

After:

$ rails generate
    SECURITY WARNING: No secret option provided to Rack::Session::Cookie.
    This poses a security threat. It is strongly recommended that you
    provide a secret to prevent exploits that may be possible from crafted
    cookies. This will not be supported in future versions of Rack, and
    future versions will even invalidate your existing user cookies.

    Called from: c:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.8/lib/action_dispatch/middleware/session/abstract_store.rb:28:in `initialize'.

Usage: rails generate GENERATOR [args] [options]
(...)

rahul patil · Accepted Answer · 2014-10-11 04:29:25Z

0

Add following gem in Gemfile and try with the bundle install

gem "therubyracer", "~> 0.10.2"

answered Oct 11, 2014 at 4:29

rahul patil

7076 silver badges12 bronze badges

Comments

Muhammad Shazar · Accepted Answer · 2022-07-08 05:42:04Z

0

This error is due to absence of Javascript runtime environment. Like Nodejs. Either you haven't selected it or it is not installed.

See if you already have nodejs using,

nvm list
nvm use <version> //to use it (i.e nvm use 14)

if it is not installed use,

sudo apt-get install nodejs

answered Jul 8, 2022 at 5:42

Muhammad Shazar

791 silver badge6 bronze badges

Collectives™ on Stack Overflow

Rails: Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)

10 Answers 10

3 Comments

2 Comments

2 Comments

Comments

2 Comments

Comments

1 Comment

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

10 Answers 10

3 Comments

2 Comments

2 Comments

Comments

2 Comments

Comments

1 Comment

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related