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我正在尝试使用Rails 3.2.3安装mysql2 gem并且它失败了:

?  bundle install
Fetching gem metadata from https://rubygems.org/.........
Using rake (0.9.2.2) 
Using i18n (0.6.0) 
Using multi_json (1.2.0) 
Using activesupport (3.2.3) 
Using builder (3.0.0) 
Using activemodel (3.2.3) 
Using erubis (2.7.0) 
Using journey (1.0.3) 
Using rack (1.4.1) 
Using rack-cache (1.2) 
Using rack-test (0.6.1) 
Using hike (1.2.1) 
Using tilt (1.3.3) 
Using sprockets (2.1.2) 
Using actionpack (3.2.3) 
Using mime-types (1.18) 
Using polyglot (0.3.3) 
Using treetop (1.4.10) 
Using mail (2.4.4) 
Using actionmailer (3.2.3) 
Using arel (3.0.2) 
Using tzinfo (0.3.32) 
Using activerecord (3.2.3) …