Rails installation failure.

Question

I am trying to install rails and I keep getting the following error, I have install developer tools but this didn't fix the problem.

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

/Users/stel/.rvm/rubies/ruby-2.2.1/bin/ruby -r ./siteconf20150928- 21021-11g7r42.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=/Users/stel/.rvm/rubies/ruby-2.2.1/bin/$(RUBY_BASE_NAME)
--help
--clean
/Users/stel/.rvm/rubies/ruby-2.2.1/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 /Users/stel/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/mkmf.rb:571:in `block in try_compile'
from /Users/stel/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/mkmf.rb:522:in `with_werror'
from /Users/stel/.rvm/rubies/ruby-2.2.1/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 /Users/stel/.rvm/rubies/ruby-2.2.1/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 /Users/stel/.rvm/rubies/ruby-  2.2.1/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2 for inspection.
Results logged to /Users/stel/.rvm/rubies/ruby-2.2.1/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-14/2.2.0-static/nokogiri-1.6.6.2/gem_make.out
Petross-Mini:~ stel$ bundle config build.nokogiri --use-system-libraries
-bash: bundle: command not found

Answer 1

You have to install ruby with rvm or rbenv . Otherwise It will create a problem. Use the following steps.

#Install rvm
\curl -sSL https://get.rvm.io | bash -s stable

#Install ruby version 2.0.0-p451
rvm install ruby-2.0.0-p451