install failed with "ERROR: Failed to build gem native extension."
Opened this issue · 1 comments
Deleted user commented
sudo gem install json
[sudo] password for user:
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:inrequire'
from extconf.rb:1:in `
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
flori commented
Your ruby installation is incomplete. If you're on debian you have to install the appropriate *-dev package for your ruby.