CODEWITHSUNDEEP
ruby-on-railsrubyjsonubunturubygems
TownWizard
TownWizard

Reputation: 223

Why do I get an error installing the JSON gem in Ubuntu?

Using Ubuntu, when I run "bundle install" to set up my Rails environment, it throws an error during the JSON gem installation:

Installing json (1.7.3) with native extensions 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/usr/bin/ruby1.9.1 extconf.rb 
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
    from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from extconf.rb:1:in `<main>'

Gem files will remain installed in /home/danny/.bundler/tmp/2040/gems/json-1.7.3 for inspection.
Results logged to /home/danny/.bundler/tmp/2040/gems/json-1.7.3/ext/json/ext/parser/gem_make.out
An error occured 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 try installing only the JSON 1.7.3 gem it also gives me an error:

Building native extensions.  This could take a while...
ERROR:  Error installing json:
    ERROR: Failed to build gem native extension.

/usr/bin/ruby1.9.1 extconf.rb
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
    from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from extconf.rb:1:in `<main>'

Gem files will remain installed in /var/lib/gems/1.9.1/gems/json-1.7.3 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/json-1.7.3/ext/json/ext/parser/gem_make.out

I've installed RVM and am running Ruby 1.9.3; Why can't it install the JSON gem?

Upvotes: 22

Views: 24287

Answers (2)

Vaibhav Jain
Vaibhav Jain

Reputation: 397

Run these commands on your terminal:-

rvm install ruby-1.9.3-p551

gem install bundler -v '~> 1.17.3'

Then, bundle install --force

Upvotes: 0

Dylan Markow
Dylan Markow

Reputation: 124469

Installing the ruby1.9.1-dev package should fix this for you:

sudo apt-get install ruby1.9.1-dev

Upvotes: 71

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