Rails 3 - Installation Problems...Could not find bcrypt-ruby-2.1.2

I'm working to install Rails 3 on a new MacBook Pro...

when trying to get my app going, I get the following error:

Could not find bcrypt-ruby-2.1.2 in any of the sources
Try running `bundle install`.

When I run bundle install, I get the following:

...

Installing bcrypt-ruby (2.1.2) with native extensions /Library/Ruby/Site/1.8/rubygems/installer.rb:483:in `build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)

...

Any ideas what I'm doing wrong?

Also... When I run rails -v it returns:

开发者_开发百科Could not find bcrypt-ruby-2.1.2 in any of the sources
Try running `bundle install`.

There's a problem compiling the extension, most likely you are missing a C library or something like that. On my Mac it installed with no problem using ruby 1.8.7 (2010-08-16 patchlevel 302) [i686-darwin10.4.0] installed with RVM.

Can you try gem install bcrypt-ruby to get more debugging output?

Are you using ports or brew or something else?