[英]Rails installation failed on Ubuntu with “cannot load such file — mkmf”
I have this problem while installing Rails on Ubuntu 11: 我在Ubuntu 11上安装Rails时遇到此问题:
root@salah:/home/salah/rubygems-1.8.15# sudo gem install mysql
Fetching: mysql-2.8.1.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing mysql:
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:10:in `<main>'
Gem files will remain installed in /usr/lib/ruby/gems/1.9.1/gems/mysql-2.8.1 for inspection.
Results logged to /usr/lib/ruby/gems/1.9.1/gems/mysql-2.8.1/ext/mysql_api/gem_make.out
mkmf is part of the ruby-dev package if I'm not mistaken. 如果我没弄错的话,mkmf是ruby-dev软件包的一部分。 Try:
尝试:
sudo aptitude install ruby1.9.1-dev
Of course you may be better off installing ruby through RVM :) 当然你最好通过RVM安装ruby :)
对于ubuntu 13.04,这对我有用:
sudo apt-get install ruby-dev
尝试rvm all do gem install nokogiri
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