Problem with Execjs and its JS runtime environment

[jfeaver]

I'm using Ubuntu 11.10 and package managers in the terminal to install and run Rails. Here is the process I've taken so far to setup Rails:

• download and install Ruby 1.9.2 and Rails 3.1.0
  -- I did this using sudo apt-get ruby1.9.1 and sudo gem install rails
• I made a new rails app using rails new path/to/app
• I went to the new app directory and tried running rails server and got an error about not having a JS ruby environment
• I had to get a JS runtime environment for execjs so I downloaded 'therubyracer' as well as 'therubyrhino' and added them to my gem file, one at a time like this: gem 'therubyracer' then ran bundle install
• After everything was successful with the install, I ran rails server again
  -- with both runtime environments I have had similar errors:

Could not find libv8-3.3.10.4 in any of the sources
Run bundle install to install missing gems.

Could not find therubyrhino-1.73.0 in any of the sources
Run bundle install to install missing gems.

Bundle knows where these programs live, giving correct pathnames when I enter bundle show libv8 or bundle show therubyrhino. They are both in /usr/lib/ruby/gems/1.9.1/gems/_ where all the other gems are located for the bundle install.

Is this an issue with my machine or is there some step that I've forgotten?

Thanks so much,
Feav

[guilleiguaran]

Try removing therubyrhino from Gemfile, use only therubyracer and run bundle install again.

[jfeaver]

I am being misunderstood. I have tried using both therubyrhino as well as therubyracer individually but get the same error both times.

[guilleiguaran]

can you try install the gems inside of your app?

bundle install --path vendor/bundle

Try only with therubyracer.

[ghost]

I suggest installing Node.JS (using this for instance). This solved the problem for me because Node.JS uses a JS runtime that seems to be recognized by default by ExecJS.

[brentsowers1]

You shouldn't have to install node.js. You can simply add therubyracer to your Gemfile. I've made a fix to the rails script to automatically put the line for therubyracer to the Gemfile:
For Rails 3.1 - #4407
For Rails 3.2 - #4406
For Rails master - #4405

[vijaydev]

Closing. New apps are generated with a commented line in the gemfile now.