Rails won't install

Hi folks.

ruby 2.0.0p247 (2013-06-27 revision 41674) [universal.x86_64-darwin13]

Rails wont install:

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

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
extconf.rb
mkmf.rb can’t find header files for ruby at
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/include/ruby.h

Gem files will remain installed in
/Library/Ruby/Gems/2.0.0/gems/atomic-1.1.14 for inspection.
Results logged to
/Library/Ruby/Gems/2.0.0/gems/atomic-1.1.14/ext/gem_make.out

Any advice appreciated.

Cheers

On Mon, Dec 2, 2013 at 11:18 AM, VP [email protected]
wrote:

ruby 2.0.0p247 (2013-06-27 revision 41674) [universal.x86_64-darwin13]

Rails wont install:

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

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby
extconf.rb
mkmf.rb can’t find header files for ruby at
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/include/ruby.h

Install XCode.