I can't run “bundle update” because of “mysql2” gem

Question

I have this in the Gemfile:

gem \'mysql2\'

But when I run bundle update, I get this error message:

An error oc         


        

Answer 1

I just installed mysql via $ brew install mysql and it fixed the problem.

Answer 2

I've ended up with a near-identical error message from attempting to build on a machine without gcc-c++ installed; mkmf is failing to compile a simple c program because the compiler flat out isn't there.

If you're on CentOS, you want sudo yum install gcc-c++. On Ubuntu, it's sudo apt-get install g++. It's a little disappointing that old versions of ruby-devel don't have a dependency on g++.

Answer 3

On Ubuntu, run

sudo apt-get install libmysqlclient-dev

Or, if you use MariaDB, run

sudo apt-get install libmariadbclient-dev

Answer 4

Add this in Gemfile:-

gem 'mysql2', '0.3.16'

Then:-

bundle install

After that try:-

bundle update

Answer 5

Looks like there is no mysql2 gem installed in your machine.As you are using Mac OSX,you should be installing mysql2 gem like this

gem install mysql2 -- --with-mysql-dir=/usr/local/opt/mysql/ 

If the above command did't work,try like this

sudo gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config

And after try

bundle install

This should fix the error.

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