Use MySQL from AMPPS with Rails

I'm trying to use Rails with the MySQL bin from Ampps, but when I run the command rails generate scaffold User name:string email:string I get the following error:

dyld: lazy symbol binding failed: Symbol not found: _mysql_server_init
Referenced from: /Users/myusername/.rvm/gems/ruby-2.2.1/gems/mysql2-0.4.2/lib/mysql2/mysql2.bundle
  Expected in: flat namespace

dyld: Symbol not found: _mysql_server_init
  Referenced from: /Users/myusername/.rvm/gems/ruby-2.2.1/gems/mysql2-0.4.2/lib/mysql2/mysql2.bundle
  Expected in: flat namespace

I have already configured Ampps Mysql with my environment but I can not managed to make it work with rails, I have the following configurations.

$ which mysql                                          
/Applications/AMPPS/mysql/bin/mysql

$ echo $PATH
/Users/myusername/.rvm/gems/ruby-2.2.1/bin:/Users/myusername/.rvm/gems/ruby-2.2.1@global/bin:/Users/myusername/.rvm/rubies/ruby-2.2.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/myusername/.rvm/gems/ruby-2.2.1/bin:/Users/myusername/.rvm/gems/ruby-2.2.1@global/bin:/Users/myusername/.rvm/rubies/ruby-2.2.1/bin:/Applications/AMPPS/php-5.4/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/myusername/.rvm/bin:/Users/myusername/.rvm/bin:/Applications/AMPPS/mysql/bin

$ ls -l /usr/local/lib/libmy*.dylib 
lrwxr-xr-x  1 myusername  admin  53 Jan  1 19:30 /usr/local/lib/libmysqlclient.18.dylib -> /Applications/AMPPS/mysql/lib/libmysqlclient.18.dylib

I have tried doing commands but with no success:

$ gem install mysql2 -- --with-mysql-lib=/Applications/AMPPS/mysql/lib --with-mysql-include=/Applications/AMPPS/mysql/include --with-mysql-config=/Applications/AMPPS/mysql/bin/mysql_config

And

bundle config build.mysql2 --with-mysql-lib=/Applications/AMPPS/mysql/lib --with-mysql-include=/Applications/AMPPS/mysql/include --with-mysql-config=/Applications/AMPPS/mysql/bin/mysql_config
bundle install

Any ideas?