I\'m having issues with the libv8 gem with ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin10.8.0]. gem install libv8 works fine and I have
libv8
Another solution is to use nodejs instead of therubyracer. You install it on the server using apt-get/yum, so there's no need for your Gemfile to include execjs or therubyracer.