How can I fix this error in ruby on rail.
source \'https://rubygems.org\' git_source(:github) do |repo_name| repo_name = \"#{repo_name}/#{repo_name}\" unl
I think you missing dev library of mysql:
On ubuntu
sudo apt-get install libmysqlclient-dev
On Red Hat/CentOS and other distributions using yum:
sudo yum install mysql-devel
On Mac OS X with Homebrew:
brew install mysql