[Geoip-ruby] installing on mac osx tiger: 'extconf failure: need libiconv.'

[Matt W. <mat...@fa...>]

Hi people,

I'm relatively new to unix/osx/ruby so be gentle if you can...!

When I run ruby extconf.rb to try and install net-geoip-0.06 I keep  
getting the error 'extconf failure: need libiconv.'

I'm pretty stuck with this. I have un-installed ruby and libiconv  
then reinstalled, all using DarwinPorts. If I run port installed i  
see the following:
Vigor10:~/Documents/Downloads/net-geoip-0.06 matt$ port installed
The following ports are currently installed:
   libiconv @1.11_0+darwin_8 (active)
   openssl @0.9.8b_0+darwin_8 (active)
   readline @5.1.004_0 (active)
   ruby @1.8.5_0 (active)
   sqlite2 @2.8.17_0+darwin_8 (active)
   sqlite3 @3.3.7_0+darwin_8 (active)
   swig @1.3.29_0+darwin_8 (active)
   zlib @1.2.3_0 (active)

So that looks OK, right?

In irb, if I require('mkmf') first, I can call have_library 
('iconv','libiconv') and return true, but the line that fails in  
extconf.rb is looking for a function 'iconv_open', and indeed if i  
call find_library('iconv','iconv_open') in that same irb session, I  
get back false.

I appreciate that this maybe isn't the right place to ask this  
question as it's not directly related to the net-geo library, but I'm  
hoping someone using the net-geoip library may have already hit this  
and know what to do.

thanks in advance for any pointers,
Matt