# sudo gem install rails
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>'
# ruby -v
ruby 1.9.3p385 (2013-02-06 revision 39114) [x86_64-linux]
# sudo apt-get install ruby1.9.1-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
ruby1.9.1-dev
0 upgraded, 1 newly installed, 0 to remove and 26 not upgraded.
Need to get 1,218 kB of archives.
After this operation, 4,119 kB of additional disk space will be used.
Get:1 http://security.ubuntu.com/ubuntu/ quantal-security/main ruby1.9.1-dev amd64 1.9.3.194-1ubuntu1.3 [1,218 kB]
Fetched 1,218 kB in 2s (456 kB/s)
Selecting previously unselected package ruby1.9.1-dev.
(Reading database ... 277339 files and directories currently installed.)
Unpacking ruby1.9.1-dev (from .../ruby1.9.1-dev_1.9.3.194-1ubuntu1.3_amd64.deb) ...
Setting up ruby1.9.1-dev (1.9.3.194-1ubuntu1.3) ...
razimi@Dell-NSeries:~$ sudo gem install rails
Building native extensions. This could take a while...
Fetching: rdoc-3.12.2.gem (100%)
Depending on your version of ruby, you may need to install ruby rdoc/ri data:
<= 1.8.6 : unsupported
= 1.8.7 : gem install rdoc-data; rdoc-data --install
= 1.9.1 : gem install rdoc-data; rdoc-data --install
>= 1.9.2 : nothing to do! Yay!
Fetching: railties-3.2.13.gem (100%)
Fetching: rails-3.2.13.gem (100%)
Successfully installed json-1.7.7
Successfully installed rdoc-3.12.2
Successfully installed railties-3.2.13
Successfully installed rails-3.2.13
4 gems installed
Installing ri documentation for json-1.7.7...
Installing ri documentation for rdoc-3.12.2...
Installing ri documentation for railties-3.2.13...
Installing ri documentation for rails-3.2.13...
Installing RDoc documentation for json-1.7.7...
Installing RDoc documentation for rdoc-3.12.2...
Installing RDoc documentation for railties-3.2.13...
Installing RDoc documentation for rails-3.2.13...
# sudo gem install rails
Building native extensions. This could take a while...
Fetching: rdoc-3.12.2.gem (100%)
Depending on your version of ruby, you may need to install ruby rdoc/ri data:
<= 1.8.6 : unsupported
= 1.8.7 : gem install rdoc-data; rdoc-data --install
= 1.9.1 : gem install rdoc-data; rdoc-data --install
>= 1.9.2 : nothing to do! Yay!
Fetching: railties-3.2.13.gem (100%)
Fetching: rails-3.2.13.gem (100%)
Successfully installed json-1.7.7
Successfully installed rdoc-3.12.2
Successfully installed railties-3.2.13
Successfully installed rails-3.2.13
4 gems installed
Installing ri documentation for json-1.7.7...
Installing ri documentation for rdoc-3.12.2...
Installing ri documentation for railties-3.2.13...
Installing ri documentation for rails-3.2.13...
Installing RDoc documentation for json-1.7.7...
Installing RDoc documentation for rdoc-3.12.2...
Installing RDoc documentation for railties-3.2.13...
Installing RDoc documentation for rails-3.2.13...
# ruby -v
ruby 1.9.3p385 (2013-02-06 revision 39114) [x86_64-linux]
DONE
