Ruby 1.9.3
Gemfile的一部分
#...............
gem "pony"
gem "bcrypt-ruby", :require => "bcrypt"
gem "nokogiri"
#..................
当我尝试安装宝石时,我收到一个错误
alex@ubuntu:~/$ bundle
Fetching gem metadata from http://rubygems.org/.........
Fetching gem metadata from http://rubygems.org/..
Enter your password to install the bundled RubyGems to your system:
#####............................................................
Installing bcrypt-ruby (3.0.1) with native extensions
Gem::Installer::ExtensionBuildError: 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:36:in `<main>'
Gem files will remain installed in /home/alex/.bundler/tmp/5526/gems/bcrypt-ruby-3.0.1 for inspection.
Results …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)
然后它输出了很多'抓取'命令,最终输出了这个错误:
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
当我输入
$rails server
它说当前没有安装rails