Failed to Build Gem Extension Error Installing rails

Question

I'm on a fresh Ubuntu installation and using the guide to install rails found here.

When I get to the final sudo gem install rails, I get this error:

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

    current directory: /var/lib/gems/2.3.0/gems/nio4r-1.2.1/ext/nio4r
/usr/bin/ruby2.3 -r ./siteconf20160821-19665-u7rxlt.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /var/lib/gems/2.3.0/gems/nio4r-1.2.1 for inspection.
Results logged to /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/nio4r-1.2.1/gem_make.out

There are missing headers for ruby. Apt get install ruby2.3-dev — max pleaner, Aug 21 '16 at 15:02
Please add the contents of `cat /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/nio4r-1.2.1/gem_make.out` — MustModify, Aug 21 '16 at 16:02

score 0 · Answer 1 · edited May 23 '17 at 12:09

0

Try this

gem update --system 2.0.3

Ref: https://stackoverflow.com/a/17657242/4132578

edited May 23 '17 at 12:09

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answered Aug 21 '16 at 17:07

TheGuy

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Failed to Build Gem Extension Error Installing rails

1 Answers1