在 Fedora 12 上安装 rdoc、irb、bluecloth、chronic 时出现问题

Question

这些错误是什么意思？

[root@localhost config]# gem install bluecloth
Building native extensions.  This could take a while...
ERROR:  Error installing bluecloth:
    ERROR: Failed to build gem native extension.

/usr/bin/ruby extconf.rb
can't find header files for ruby.


Gem files will remain installed in /usr/lib64/ruby/gems/1.8/gems/bluecloth-2.0.7 for 
inspection.
Results logged to /usr/lib64/ruby/gems/1.8/gems/bluecloth-2.0.7/ext/gem_make.out
[root@localhost config]# 

还有这个

[root@localhost config]# gem install chronic
Successfully installed json_pure-1.4.3
Successfully installed rubyforge-2.0.4
Successfully installed hoe-2.6.0
Successfully installed chronic-0.2.3
4 gems installed
/usr/lib64/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ruby_lex.rb:67: warning: 
parenthesize argument(s) for future version
ERROR:  While executing gem ... (Gem::DocumentError)
    ERROR: RDoc documentation generator not installed: no such file to load -- irb/slex
[root@localhost config]# 

我已经使用“yum install ruby​​-rdocs”安装了 rdocs。但是我不明白这个错误是什么意思

Answer 1

yum install ruby-devel ruby-irb ruby-rdoc ruby-ri

虽然前一个命令修复了这两个问题，但请记住，对于第二个错误消息，您也可以通过添加 --no-rdoc 来跳过文档。

2017 年 4 月：
--[no-]rdoc 参数已被弃用，如 gem install --help 中所述。您现在必须在每次安装 gem 时使用 --no-document 或将其存储在您的 ~/.gemrc 中，如 answer 中所述。