Actually, it was a little tricky.
I use my custom dotfiles, so, I have ~/.dotfiles/bin
in my PATH.
I also been noticed that the issue is related to python v3 vs v2.
So, the fix was pretty easy, without break my system:
ln -s /usr/bin/python2 ~/.dotfiles/bin
reload
gem install libv8 --verbose
bundle
Leaving my Gemfile
like this:
[...]
gem 'therubyracer', :require => 'v8', :platforms => :ruby
[...]
And BOOM, it worked.
Thanks for your help guys. Sorry for the delay to reply.
Cheers
EDIT
Issue was fixed in the newer therubyracer release (0.11.1).