Posted by firstruby on November 13, 2011
While installaing json gem in Ruby on Rails 3.0 or 3.1, I was getting following error,
$ gem install json -v=1.4.6 –platform=ruby –no-ri –no-rdoc
Fetching: json-1.4.6.gem (100%)
ERROR: Error installing json:
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
To fix this problem, need to install Development Kit (DevKit – Its a toolkit that makes it easy to build and use native C/C++ extensions for Ruby on Windows) as follows,
1) Download DevKit file from http://rubyinstaller.org/downloads (DevKit-tdm-32-4.5.2-20110712-1620-sfx.exe)
2) Extract DevKit to path C:\Ruby192\DevKit
3) Goto DevKit installation directory,
4) Run following command,
ruby dk.rb init
It will generate the config.yml file. This config file should include installed Ruby path, like “C:\Ruby192”
5) Run following command,
ruby dk.rb review
It is useful to review the list of Rubies to be enhanced to use the DevKit and verify the changes you made to it are correct.
6) Run following command,
ruby dk.rb install
It is useful to enhance your installed Rubies and makes it easy to build and use native C/C++ extensions such as json.
Reference : https://github.com/oneclick/rubyinstaller/wiki/Development-Kit
Posted in Useful Links | Tagged: DevKit, gem, json, rails 3.0.x, windows | 25 Comments »
Posted by firstruby on December 31, 2010
In Rails 3.0.3 application, I have developed login functionality using ‘Authlogic’ gem. Gem added in ‘Gemfile’ as,
gem 'authlogic', :git => 'git://github.com/odorcicd/authlogic.git', :branch => 'rails3'
Application was working fine with Mongrel and WEBrick server, but it was throwing an error with Passenger,
git://github.com/odorcicd/authlogic.git (at rails3) is not checked out. Please run `bundle install` (Bundler::GitError)
When we do ‘bundle install’, bundler installs gem (from GIT source) to different path other than regular one. Passenger does not understand this path, and that’s why above error was coming. So I have fixed it in following way,
I have installed ‘authlogic’ as a Plugin from branch “rails3” of given git path as,
git clone git://github.com/odorcicd/authlogic.git
git checkout --track -b rails3 origin/rails3
After this, restarted application, and app works fine with Passenger, Mongrel, and WEBrick.
Hope this is helpful.
Posted in Useful Links | Tagged: gem, git, passenger, rails 3.x | Leave a Comment »
Posted by firstruby on November 16, 2008
To install ri and rdoc of any gem,
gem install gemname
This command installs ri and rdoc with installation of gem.
To skip the installation of ri and rdoc of gem,
gem install gemname –no-ri –no-rdoc
This command will skip the installation of ri and rdoc when installing gem.
Posted in firstruby, Forum, Useful Links | Tagged: gem, rails, rdoc, ri | Leave a Comment »