Can not install json gem with ruby 2.2.3 on Ubuntu

Question

I am going through a Rails tutorial and I\'m not able to complete \'bundle install\' due to a problem with the json gem. When I attempt to install it directly:

Answer 1

cannot find -lgmp means that it can't find the gmp library. Try running:

sudo apt-get install libgmp3-dev

https://github.com/flori/json/issues/253