Ruby on Rails - 找不到 mysql2.so

Question

我已经在 Ruby on Rails 上工作 2 个月了，现在我想更改数据库系统，所以我通过以下命令安装了 gem mysql2：

gem install mysql2 --platform=ruby -- '--with-mysql-lib="C:\mysql-connector\lib" --with-mysql-include="C:\mysql-connector\include" --with-mysql-dir="C:\mysql-connector"'

而且它有效！

但问题是当我想再次运行 rails server 时出现此错误

c:\zreactor\demo>rails server
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.16/lib/mysql2.rb:8:in `requir
e': 126: The specified module could not be found.   - C:/Ruby200-x64/lib/ruby/ge
ms/2.0.0/extensions/x64-mingw32/2.0.0/mysql2-0.3.16/mysql2/mysql2.so (LoadError)

        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-0.3.16/lib/mysql2.rb
:8:in `<top (required)>'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:76:in `require'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:76:in `block (2 levels) in require'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:72:in `each'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:72:in `block in require'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:61:in `each'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler/r
untime.rb:61:in `require'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/bundler-1.7.3/lib/bundler.r
b:133:in `require'
        from c:/zreactor/demo/config/application.rb:7:in `<top (required)>'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/co
mmands.rb:74:in `require'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/co
mmands.rb:74:in `block in <top (required)>'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/co
mmands.rb:71:in `tap'
        from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/co
mmands.rb:71:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

我搜索了源代码，看起来一切正常，但我不知道为什么会出现此错误。

我正在使用 ruby​​ 2.0 和 rails 4.0.2 开发 W8。

感谢您的帮助， 谢谢！

Answer 1

您很可能需要重新生成libmysql.lib，如下所述：

...mysql2/mysql2.so: [BUG] Segmentation fault ruby 2.0.0p247