Error while installing rails

Question

Hi I'm new setting up servers I'm installing rails on an Amazon Linux

Installed List: -ruby -development tools -gems -zlib-devel -readline-devel

I'm trying to install rails and now I'm stuck here

$ 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/ruby extconf.rb mkmf.rb can't find header files for ruby at /usr/lib/ruby/ruby.h

Gem files will remain installed in /usr/lib64/ruby/gems/1.8/gems/json-1.6.3 for inspection. Results logged to /usr/lib64/ruby/gems/1.8/gems/json-1.6.3/ext/json/ext/parser/gem_make.out

Is there a problem with this json library

Answer 1

You need to install the following

yum install ruby-devel
yum install make
yum install gcc

Answer 2

You should be using Ruby 1.9.x, to upgrade Ruby:

sudo yum install ruby19

and also

sudo yum install ruby19-devel
sudo yum install make
sudo yum install gcc