gem install json -v 1.7.3 gives 'Please update your PATH to include build tools'

Question

When I run:

rails new blog 

I get:

Installing json (1.7.3) Gem::InstallError: The 'json' native gem requires installed build tools.  Please update your PATH to include build tools or download the DevKit from 'http://rubyinstaller.org/downloads' and follow the instructions at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit' An error occurred while installing json (1.7.3), and Bundler cannot continue. Make sure that `gem install json -v '1.7.3'` succeeds before bundling. 

When I run:

gem install json -v 1.7.3 

I get:

Please update your PATH to include build tools or download the DevKit from 'http://rubyinstaller.org/downloads' and follow the instructions at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit' 

I'm using Windows 8. I do have c:\ruby193\bin in my path. What do I do to remedy these errors?

Answer 1

Make sure you install the devkit (ticking the checkboxes that will update the path) : You might need to reinstall ruby too.

Install the DevKit

Download Development Kit from here http://rubyinstaller.org/downloads/

DevKit url at this time For use with Ruby 1.8.7 and 1.9.3: DevKit-tdm-32-4.5.2

For use with Ruby 2.0 and above (32bits version only): DevKit-mingw64-32-4.7.2

For use with Ruby 2.0 and above (x64 - 64bits only) DevKit-mingw64-64-4.7.2

Follow instructions here.

Or short instructions :

Unzip the zip

open command-line and go to unzipped folder

ruby dk.rb init

ruby dk.rb install

gem install rdiscount --platform=ruby

Answer 2

sometimes when you run the ruby dk.rb init you got an error like this

for fixing this problem you have to change the encoding of the command prompt windows . to do this type chcp 1256 and you will receive this message : Active code page: 1256

now you can run that command without problem .

good luck .