作为背景,这里是我的环境：
vishal@dishDell:~$gem env
RubyGems Environment:
- RUBYGEMS VERSION: 1.8.24
- RUBY VERSION: 1.9.3 (2011-10-30 patchlevel 0) [x86_64-linux]
- INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.9.1
- RUBY EXECUTABLE: /usr/bin/ruby1.9.1
- EXECUTABLE DIRECTORY: /usr/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-linux
- GEM PATHS:
- /usr/lib/ruby/gems/1.9.1
- /home/vishal/.gem/ruby/1.9.1
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- http://rubygems.org/
这是当我尝试运行gem安装rails时会发生什么.
vishal@dishDell:~$sudo gem install rails
[sudo] password for vishal:
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.9.1 extconf.rb
/usr/local/lib/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
from /usr/local/lib/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from extconf.rb:1:in `<main>'
Gem files will remain installed in /usr/lib/ruby/gems/1.9.1/gems/json-1.7.3 for inspection.
Results logged to /usr/lib/ruby/gems/1.9.1/gems/json-1.7.3/ext/json/ext/parser/gem_make.out
我使用apt-get安装了Ruby 1.9.3,并且在rubygems.org中从tarball安装了RubyGems.我应该怎么做才能使这个工作？
解决方法
如其他
Stackoverflow question中所指出的那样,检查你是否有ruby-1.9-dev或ruby-1.9.3-dev软件包.如果缺少安装,然后尝试安装rails.
另外,请看一下RVM在同一时间安装和管理多个ruby版本.