Fedora14でmysql2のbundle installがこける

$ bundle install --path vendor/bundle
Installing mysql2 (0.2.6) with native extensions
/usr/lib/ruby/site_ruby/1.8/rubygems/installer.rb:481:in `build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)
/usr/bin/ruby extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/ruby.h
Gem files will remain installed in /home/noguchi/projects/rtest/vendor/bundle/ruby/1.8/gems/mysql2-0.2.6 for inspection.
Results logged to /home/noguchi/projects/rtest/vendor/bundle/ruby/1.8/gems/mysql2-0.2.6/ext/mysql2/gem_make.out
from /usr/lib/ruby/site_ruby/1.8/rubygems/installer.rb:446:in `each'
from /usr/lib/ruby/site_ruby/1.8/rubygems/installer.rb:446:in `build_extensions'
from /usr/lib/ruby/site_ruby/1.8/rubygems/installer.rb:198:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/source.rb:96:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/installer.rb:55:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/spec_set.rb:12:in `each'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/spec_set.rb:12:in `each'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/installer.rb:44:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/installer.rb:8:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/cli.rb:226:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/vendor/thor/task.rb:22:in `send'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/vendor/thor/task.rb:22:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/vendor/thor.rb:246:in `dispatch'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/lib/bundler/vendor/thor/base.rb:389:in `start'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.10/bin/bundle:13
from /usr/bin/bundle:19:in `load'
from /usr/bin/bundle:19

こういう場合はだいたい開発用のヘッダが足りないのが原因。

$ sudo yum -y install ruby-devel mysql-devel

もう一回bundle installしてあげればOK。

注意点

gcc入ってないともっと違ったエラーが出るので気をつける。

$ sudo yum -y install gcc g++