mysql2 のインストールで bundle install がコケる (CentOS)

• CentOS5.5
• Ruby1.8.7-p302

# bundle install
Fetching source index for http://rubygems.org/
Using rake (0.8.7) 
Using abstract (1.0.0) 
Using activesupport (3.0.3) 
Using builder (2.1.2) 
Using i18n (0.5.0) 
Using activemodel (3.0.3) 
Using erubis (2.6.6) 
Using rack (1.2.1) 
Using rack-mount (0.6.13) 
Using rack-test (0.5.7) 
Using tzinfo (0.3.24) 
Using actionpack (3.0.3) 
Using mime-types (1.16) 
Using polyglot (0.3.1) 
Using treetop (1.4.9) 
Using mail (2.2.14) 
Using actionmailer (3.0.3) 
Using arel (2.0.7) 
Using activerecord (3.0.3) 
Using activeresource (3.0.3) 
Using bundler (1.0.7) 
Installing mysql2 (0.2.6) with native extensions /usr/lib/ruby/site_ruby/1.8/rubygems/installer.rb:483:in `build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)

/usr/bin/ruby extconf.rb 
checking for rb_thread_blocking_region()... no
checking for mysql.h... no
checking for mysql/mysql.h... no
-----
mysql.h is missing.  please check your installation of mysql and try again.
-----
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/usr/bin/ruby
        --with-mysql-config
        --without-mysql-config


Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/mysql2-0.2.6 for inspection.
Results logged to /usr/lib/ruby/gems/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-1.0.7/lib/bundler/source.rb:95:in `install'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/installer.rb:55:in `run'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/spec_set.rb:12:in `each'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/spec_set.rb:12:in `each'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/installer.rb:44:in `run'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/installer.rb:8:in `install'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/cli.rb:225:in `install'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/task.rb:22:in `send'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/task.rb:22:in `run'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor.rb:246:in `dispatch'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/base.rb:389:in `start'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/bin/bundle:13
        from /usr/bin/bundle:19:in `load'
        from /usr/bin/bundle:19

「mysqlのヘッダーがないよ」って言ってる。

# yum -y install mysql-devel

で解決。

投稿者紹介

株式会社ユニキャスト

私たちは、テクノロジに魅せられた個性あふれるメンバーによって構成された茨城県日立市に本社を構えるベンチャー企業です。
”テクノロジを通して「驚き」と「感動」を創造し、人々の「夢」と「笑顔」を支えます。” の経営理念をモットーに明るい未来を描き、ワクワクする企画提案を続けて参ります。

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