当我用安装来rvm后,用rvm安装ruby 1.9.3,安装gem 1.8.17后,我使用gem install rails出现来一下错误:
ERROR: Loading command: install (LoadError)
cannot load such file -- zlib
ERROR: While executing gem ... (NameError)
uninitialized constant Gem::Commands::InstallCommand
估计原因是gem运行缺少zlib库支持,所以需要
1\ $sudo apt-get install zlib1g-dev
2\ 下载rails源码
3、进入ruby源码文件夹,安装ruby自身提供的zlib包
$cd ext/zlib
$ruby ./extconf.rb
$make
$make install
接下来你就可以gem install rails了
但是并不推荐这么解决问题,因为出现这种情况一定是因为安装步骤出现漏洞了
推荐这样安装: http://blog.csdn.net/liuyanzhi08/article/details/7741060
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