Windows 7的mysql2寶石錯誤

Question

我在Windows 7上運行 鐵軌所以我本來有一個錯誤，說：

ERROR: Failed to build gem native extension 

C:/Ruby192/bin/ruby.exe extconf.rb 

checking for rb_thread_blocking_region()... yes 
checking for main() in -llibmysql... no 
***extconf.rb failed *** 
Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers 

我再通過計算器去，看到解決這個問題，我需要做的只是寶石安裝mysql2。我這樣做，但現在得到這個錯誤：

gem install mysql2 

ERROR: while executing gem... (NameError) 
uinitialized constant Psyck::Syck 

Answer 1

使用gem install mysql2 -v 0.3.9可以做的伎倆。