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Unable to install gem – Failed to build gem native extension – cannot load such file — mkmf (LoadError)8个
嘿,我正在尝试在新的ubuntu机器上安装rails.我安装了ruby和rvm但是我收到了“未能构建gem native扩展”的错误.这是什么意思？
嘿,我正在尝试在新的ubuntu机器上安装rails.我安装了ruby和rvm但是我收到了“未能构建gem native扩展”的错误.这是什么意思？
$sudo gem install rails -v 3.2.9
(没有sudo说我没有权限)
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
$rails server
它说当前没有安装rails
解决方法
可能重复：
根据您的ruby版本,运行：
sudo apt-get install ruby1.9.1-dev