本文介绍了无法构建 gem 本机扩展 (mkmf (LoadError)) - Ubuntu 12.04的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
嘿,我正在尝试在新的 ubuntu 机器上安装 rails.我安装了 ruby 和 rvm,但出现无法构建 gem 本机扩展"错误.这是什么意思?
Hey I'm trying to install rails on a new ubuntu machine. I have ruby and rvm installed but I'm getting a "failed to build gem native extension" error. What does this mean?
$ sudo gem install rails -v 3.2.9
(没有 sudo 表示我没有权限)
(without the sudo says I don't have permissions)
然后它会输出很多获取"命令并最终出现这个错误:
Then it outputs a lot of 'fetching' commands and ultimately this error:
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/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from extconf.rb:1:in `<main>'
Gem files will remain installed in /var/lib/gems/1.9.1/gems/json-1.8.0 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/json-1.8.0/ext/json/ext/generator/gem_make.out
当我打字时
$rails server
它说当前没有安装 rails
It says rails is not currently installed
推荐答案
可能重复:
无法安装 gem - 无法构建 gem 本机扩展 - 无法加载此类文件 - mkmf (LoadError)
根据您的 ruby 版本,运行:
sudo apt-get install ruby1.9.1-dev
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