Nokogiri error on installation due to missing native extension

Question

I have been trying to install Ruby on Rails based on these instructions. However, I am getting the following error upon running gem install rails -v 4.2.4:

Fetching: rack-1.6.4.gem (100%)
Successfully installed rack-1.6.4
Building native extensions.  This could take a while...
ERROR:  Error installing rails:
    ERROR: Failed to build gem native extension.

    /home/falak/.rvm/rubies/ruby-2.2.3/bin/ruby -r ./siteconf20150909-22683-172bl7d.rb extconf.rb
checking if the C compiler accepts ... *** 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/falak/.rvm/rubies/ruby-2.2.3/bin/$(RUBY_BASE_NAME)
    --help
    --clean
/home/falak/.rvm/rubies/ruby-2.2.3/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/falak/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:571:in `block in try_compile'
    from /home/falak/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:522:in `with_werror'
    from /home/falak/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:571:in `try_compile'
    from extconf.rb:80:in `nokogiri_try_compile'
    from extconf.rb:87:in `block in add_cflags'
    from /home/falak/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:619:in `with_cflags'
    from extconf.rb:86:in `add_cflags'
    from extconf.rb:337:in `<main>'

extconf failed, exit code 1

Gem files will remain installed in /home/falak/.rvm/gems/ruby-2.2.3/gems/nokogiri-1.6.6.2 for inspection.
Results logged to /home/falak/.rvm/gems/ruby-2.2.3/extensions/x86_64-linux/2.2.0/nokogiri-1.6.6.2/gem_make.out

I tried installing nokogiri using system libraries by running gem install nokogiri -v 1.6.2.1 -- --use-system-libraries, but I got the following error:

Building native extensions with: '--use-system-libraries'
This could take a while...
Building nokogiri using system libraries.
ERROR:  Error installing nokogiri:
    ERROR: Failed to build gem native extension.

    /home/falak/.rvm/rubies/ruby-2.2.3/bin/ruby -r ./siteconf20150909-23169-twqmu6.rb extconf.rb --use-system-libraries
Building nokogiri using system libraries.
*** 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/falak/.rvm/rubies/ruby-2.2.3/bin/$(RUBY_BASE_NAME)
    --help
    --clean
    --use-system-libraries
    --with-zlib-dir
    --without-zlib-dir
    --with-zlib-include
    --without-zlib-include=${zlib-dir}/include
    --with-zlib-lib
    --without-zlib-lib=${zlib-dir}/lib
    --with-xml2-dir
    --without-xml2-dir
    --with-xml2-include
    --without-xml2-include=${xml2-dir}/include
    --with-xml2-lib
    --without-xml2-lib=${xml2-dir}/lib
    --with-libxml-2.0-config
    --without-libxml-2.0-config
    --with-pkg-config
    --without-pkg-config
/home/falak/.rvm/rubies/ruby-2.2.3/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/falak/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:541:in `try_link0'
    from /home/falak/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:556:in `try_link'
    from /home/falak/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:637:in `try_ldflags'
    from /home/falak/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:1780:in `pkg_config'
    from extconf.rb:338:in `<main>'

extconf failed, exit code 1

Gem files will remain installed in /home/falak/.rvm/gems/ruby-2.2.3/gems/nokogiri-1.6.2.1 for inspection.
Results logged to /home/falak/.rvm/gems/ruby-2.2.3/extensions/x86_64-linux/2.2.0/nokogiri-1.6.2.1/gem_make.out

Answer 1

Try installing the libgmp-dev library

apt-get install libgmp-dev

Answer 2

Using RVM to install rails in ruby 2.2.3 has been a major problem among other users as well. For now, you can still get rails 4.2.4 in ruby 2.2.2. Try:

    rvm install 2.2.2
    rvm --default use 2.2.2
    gem install rails

this should still work. RVM for some reason does not install the right headers in 2.2.3 for you to build the gems.