mysql2 gem is not compatible with mysql 5.6.19 [duplicate] - mysql

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mysql2 gem compiled for wrong mysql client library
(8 answers)
Closed 8 years ago.
I want to run a rails application on my mac osx 10.9.3 and got following error:
/Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/mysql2-0.3.16/lib/mysql2.rb:8:in `require': Incorrect MySQL client library version! This gem was compiled for 5.5.23 but the client library is 5.6.19. (RuntimeError)
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/mysql2-0.3.16/lib/mysql2.rb:8:in `<top (required)>'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/bundler-1.6.3/lib/bundler/runtime.rb:76:in `require'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/bundler-1.6.3/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/bundler-1.6.3/lib/bundler/runtime.rb:72:in `each'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/bundler-1.6.3/lib/bundler/runtime.rb:72:in `block in require'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/bundler-1.6.3/lib/bundler/runtime.rb:61:in `each'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/bundler-1.6.3/lib/bundler/runtime.rb:61:in `require'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/bundler-1.6.3/lib/bundler.rb:132:in `require'
from /Users/home/workSpace/RubyOnRails/simple_cms/config/application.rb:7:in `<top (required)>'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:79:in `require'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:79:in `block in server'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:76:in `tap'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:76:in `server'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
from /Users/home/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/railties-4.1.1/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:8:in `require'
from bin/rails:8:in `<main>'
I installed mysql with hombrew and it's working perfectly. I also use rbenv.
gem 'rails', '4.1.1'
gem 'mysql2'
and this is my databas.yml file
development:
adapter: mysql2
encoding: utf8
database: simple_cms_development
pool: 5
username: root
password: somepassword
socket: /tmp/mysql.sock
test:
adapter: mysql2
encoding: utf8
database: simple_cms_test
pool: 5
username: root
password: somepassword
socket: /tmp/mysql.sock
production:
adapter: mysql2
encoding: utf8
database: simple_cms_production
pool: 5
username: root
password: somepassword
socket: /tmp/mysql.sock
How can I solve it?

Answer 1

Headers
I was going to suggest using mysql C-connector (the recommended answer in the comments confirmed this)
We've written a tutorial on how to do this (for the typical unable to build native extensions error), but same idea
--
C-Connector
Basically, your gem just needs to interface with your system; it doesn't need need to do anything buy send queries & process the responses to your db
This means if you have a problem with your mysql version's compatibility, you'll be best installing & using a separate batch of header files (for your gem):
The way to do this is to download & install the mysql c-connector
files - IMPORTANT - GET THE 32 BIT VERSION (you can either use
the installer or unzip the files)
Once installed, you should install the gem with the following command:
gem install mysql2 --platform=ruby -- ‘--with-mysql-dir="YOUR_MYSQL_DIR”’
This should install the gem for you, which will allow you to interface with the MYSQL server