Install Rails Failed on OSX 10.8.4 - ruby-on-rails

Question

I always failed to install rails on my new Air with OSX 10.8.4, even I succeed installed ruby2, Command Line Tool of XCode, it still prompts some error when I try to install rails.
I found lots solutions from the Internet, but they all don't work on my issue, I'm completely confused, doesn't any can help me? I'll really appreciate!!!
localhost:myapp zerocool$ ruby -v
ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.3.0]
localhost:myapp zerocool$ sudo gem install rails
Password:
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed to build gem native extension.
/Users/zerocool/.rvm/rubies/ruby-2.0.0-p247/bin/ruby 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=/Users/zerocool/.rvm/rubies/ruby-2.0.0-p247/bin/ruby
--with-atomic_reference-dir
--without-atomic_reference-dir
--with-atomic_reference-include
--without-atomic_reference-include=${atomic_reference-dir}/include
--with-atomic_reference-lib
--without-atomic_reference-lib=${atomic_reference-dir}/
/Users/zerocool/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /Users/zerocool/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/mkmf.rb:519:in `try_link0'
from /Users/zerocool/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/mkmf.rb:817:in `try_run'
from extconf.rb:24:in `<main>'
Gem files will remain installed in /Users/zerocool/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/gems/2.0.0/gems/atomic-1.1.12 for inspection.
Results logged to /Users/zerocool/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/gems/2.0.0/gems/atomic-1.1.12/ext/gem_make.out

Answer 1

I ran into this issue today and it seems that my download of ruby-2.0.0 did not work properly. I would recommend trying rvm reinstall 2.0.0 followed by gem install rails.

Answer 2

Finally, I got the solution! Run rvm implode，and use rm to delete /etc/rvmrc and ~/.rmvrc, restart your mac, and you can use gem install rails to install rails successfully.

Answer 3

First I installed gcc via homebrew:
installing gcc on mavericks using brew
brew tap homebrew/dupes
brew install apple-gcc42
Then I symlinked the newly installed apple-gcc42
into my /usr/bin folder
cd /usr/bin
sudo mv gcc gcc_mavs sudo ln -s /usr/local/Cellar/apple-gcc42/4.2.1-5666.3/bin/gcc-4.2 gcc
Credits: https://coderwall.com/p/lqpp8w

Answer 4

I had this same error when running against ruby-2.0.0-p195, but updating to ruby-2.0.0-p247 (the current RVM default for 2.0.0) fixed it.