adeyo92
adeyo92

Reputation: 95

Error installing rails on Ubuntu 12.04 (Failed to build gem native extension)

I'm trying to install rails on ubuntu 12.04 but I'm having some issues

I tried

sudo gem install rails --pre

and got

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
extconf.rb:13:in `require': cannot load such file -- mkmf (LoadError)
from extconf.rb:13:in `<main>'


Gem files will remain installed in /usr/lib/ruby/gems/1.9.1/gems/atomic-1.1.10 for   inspection.
Results logged to /usr/lib/ruby/gems/1.9.1/gems/atomic-1.1.10/ext/gem_make.out

Upvotes: 2

Views: 7213

Answers (1)

Ryan Bigg
Ryan Bigg

Reputation: 107728

This is because when you installed Ruby you did not install the build tools as well.

I wrote a blog post about installing Ruby + Rails on Ubuntu that has helped out a lot of people, and will probably help you too.

Upvotes: 2

Related Questions