Installing Jekyll on Ubuntu 14.04

Question

I've been having some issues installing Jekyll on Ubuntu. Here are some of the versions I have:

trevor~$ ruby -v
ruby 2.2.4p230 (2015-12-16 revision 53155) [x86_64-linux]
trevor~$ gem -v
2.5.1
trevor~$ rvm -v
rvm 1.26.11 (latest) by Wayne E. Seguin <[email protected]>, Michal Papis <[email protected]> [https://rvm.io/]

However, when I try to install Jekyll, I get these errors:

trevor~$ gem install jekyll
Building native extensions.  This could take a while...
ERROR:  Error installing jekyll:
    ERROR: Failed to build gem native extension.

    current directory: /home/trevor/.rvm/gems/ruby-2.2.4/gems/ffi-1.9.10/ext/ffi_c
/home/trevor/.rvm/rubies/ruby-2.2.4/bin/ruby -r ./siteconf20151229-11854-1czjp2r.rb extconf.rb
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/home/trevor/.rvm/rubies/ruby-2.2.4/bin/$(RUBY_BASE_NAME)
    --with-ffi_c-dir
    --without-ffi_c-dir
    --with-ffi_c-include
    --without-ffi_c-include=${ffi_c-dir}/include
    --with-ffi_c-lib
    --without-ffi_c-lib=${ffi_c-dir}/lib
    --with-libffi-config
    --without-libffi-config
    --with-pkg-config
    --without-pkg-config
/home/trevor/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
    from /home/trevor/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/mkmf.rb:541:in `try_link0'
    from /home/trevor/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/mkmf.rb:556:in `try_link'
    from /home/trevor/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/mkmf.rb:637:in `try_ldflags'
    from /home/trevor/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/mkmf.rb:1780:in `pkg_config'
    from extconf.rb:15:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /home/trevor/.rvm/gems/ruby-2.2.4/extensions/x86_64-linux/2.2.0/ffi-1.9.10/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /home/trevor/.rvm/gems/ruby-2.2.4/gems/ffi-1.9.10 for inspection.
Results logged to /home/trevor/.rvm/gems/ruby-2.2.4/extensions/x86_64-linux/2.2.0/ffi-1.9.10/gem_make.out

Or if I use sudo:

trevor~$ sudo gem install jekyll
ERROR:  Error installing jekyll:
    jekyll requires Ruby version >= 2.0.0.

I have tried installing multiple versions of ruby-dev as recommended by others with a similar issue, but this hasn't seemed to help either.

trevor~$ sudo apt-get install ruby2.2.4-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package ruby2.2.4-dev
E: Couldn't find any package by regex 'ruby2.2.4-dev'

Same thing happens with ruby2.0.0-dev. Running sudo apt-get install ruby-dev seems to install 1.9.3.4. Regardless, I still run into the same issues above.

Any ideas?

EDIT

Here is my rvm list:

trevor~$ rvm list

rvm rubies

   ruby-2.0.0-p643 [ x86_64 ]
   ruby-2.2.1 [ x86_64 ]
=* ruby-2.2.4 [ x86_64 ]

# => - current
# =* - current && default
#  * - default

I did try installing a couple different versions. Would this cause a problem?

Answer 1

I did try installing a couple different versions. Would this cause a
problem?

No

Follow the given step would help.

1: gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3

2: \curl -sSL https://get.rvm.io | bash # install RVM (development version)

3: rvm get head # Make Sure RVM up to date

4: rvm install ruby # will install latest version of ruby

5: rvm list # Listing install rubies will you get versions of ruby which is installed by RVM

6: rvm use < ruby-version > # for instances ruby-1.9.3-p125

7: gem install jekyll

Edit Update As you edited answer in your senerio

trevor~$ rvm list

rvm rubies

   ruby-2.0.0-p643 [ x86_64 ]
   ruby-2.2.1 [ x86_64 ]
=* ruby-2.2.4 [ x86_64 ]

---

rvm use 2.2.1
gem install jekyll

Would work !!!