rich1.0phorkiehttps://p.cweiske.de/ruby: failed to build gem native extensionChristian Weiske86400900900<!-- embedding all files of https://p.cweiske.de/280 -->
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<div class="code"><pre class="txt">$ sudo gem install sqlint
Fetching: json-1.8.3.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing sqlint:
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-1.8.3 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/json-1.8.3/ext/json/ext/generator/gem_make.out
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<div class="code"><pre class="txt">$ sudo apt-get install ruby-dev</pre></div>
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