On 8 May 2006, at 2:32 am, Logan Capaldo wrote:

> On May 7, 2006, at 9:08 PM, Sam Roberts wrote:
>>
>> I'm not sure that the stock OS X ruby contains the headers and  
>> libraries
>> required to build C extensions.
>
> It does, but they are in "unfortunate" locations.
> /usr/lib/ruby/1.8/universal-darwin8.0
>
> is where some of the header files live.
>
> Others and the bundles are in the right locations. You can make  
> symlinks or you can install ruby from source.

Just installed ruby 1.8.4 using darwinports, and now all is well.  
Thanks to everyone who replied!

Kerry