Error while installing json gem 'mkmf.rb can't find header files for ruby'

Error while installing json gem 'mkmf.rb can't find header files for ruby'

json ruby rubygems

json

The 'json' native gem requires installed build tools

ruby json windows-7 rubygems

json

When I try sudo gem install json I get the following error

json ruby macos rubygems

json

Ruby JSON.pretty_generate ... is pretty unpretty

ruby-on-rails ruby json rubygems

json

Why does Ruby 1.9.2 blow up with a JSON gem dependency?

ruby-on-rails json ruby-on-rails-3 rubygems ruby-1.9

json

bundle exec - You have already activated json X, but your Gemfile requires json Y

json rubygems bundler

json

Cannot run Jekyll new command

ruby json macos rubygems jekyll

json

What's the difference between 'json" gem and 'json_pure' gem?

ruby json rubygems

json

trouble installing ruby gem json on my mac

ruby json macos rubygems

json

An error occurred while installing json (1.8.1), and Bundler cannot continue - Rails

ruby-on-rails json ruby github rubygems

json

Rails & docker - can't install json gem

ruby-on-rails json ruby-on-rails-3 docker rubygems

json

WebMock: Rspec - Test Facebook Validation by using JSON response

ruby-on-rails json rspec ruby-on-rails-3.2 rubygems

json

Error installing json Ruby gem

ruby-on-rails json ruby rubygems

json

Better way to return validation errors for nested models as json in Rails?

ruby-on-rails json ruby-on-rails-4 rubygems

json

Why is `JSON.parse` not throwing exception?

ruby json rubygems

json