Installing mod_ruby on OS X

Hi all,

I'm trying to install mod_ruby on OS X 10.3 and not having a lot of 
success. Here's what I'm doing:

     ruby configure.rb --prefix=/usr/local/apache2 
--with-apxs=/usr/local/apache2/bin/apxs
     make
     sudo make install

(Sometimes I've added --enable-shared to the config options - it 
doesn't appear to make any difference)

It compiles ok, but when I start Apache 2.2, it refuses to start:

httpd: Syntax error on line 58 of /usr/local/apache2/conf/httpd.conf: 
Cannot load /usr/local/apache2/modules/mod_ruby.so into server: dyld: 
/usr/local/apache2/bin/httpd Undefined 
symbols:\n_ruby_release_date\n_ruby_version\n

To get round this, I can edit mod_ruby.c and replace ruby_release_date 
and ruby_version with hardcoded values. :) Apache 2.2 will then start, 
but mod_ruby still doesn't work. The Apache error_log reports:

     [Thu Jul 20 00:35:14 2006] [notice] child pid 23420 exit signal 
Trace/BPT trap (5)
     [Thu Jul 20 00:35:14 2006] [notice] child pid 23419 exit signal 
Trace/BPT trap (5)
     [Thu Jul 20 00:35:14 2006] [notice] child pid 23418 exit signal 
Trace/BPT trap (5)
     dyld: /usr/local/apache2/bin/httpd Undefined symbols:
     _rb_string_value_ptr

I've tried with Ruby 1.8.4 built from source, and Ruby 1.8.2 from 
http://homepage.mac.com/discord/Ruby/ , and no luck so far.

Any thoughts?

Thanks in advance,
Richard