我正在尝试在Windows上的JRuby 1.7.13上安装ORI8 gem。
我收到一条错误消息：
Building native extensions. This could take a while...
ERROR: Error installing ruby-oci8-2.1.7.gem:
ERROR: Failed to build gem native extension.
Use RbConfig instead of obsolete and deprecated Config.
mkmf.rb can't find header files for ruby at PATH_OF_JRUBY_installation/lib/native/include/ruby/ruby.h
我已检入PATH_OF_JRUBY_installation/lib文件夹，并且没有原生文件夹和子文件夹。
如何解决上述问题？