iconv issues on leopard

I can't seem to build php 5.2.4 or a snapshot on Leopard. I have
tried the following:

--with-iconv
--with-iconv=/usr
--with-iconv=/opt/local <- custom install if libiconv

And all 3 (as well as not including any iconv switch) all end in the
following:

Undefined symbols:
"_iconv_close", referenced from:
_php_iconv_string in iconv.o
_php_iconv_string in iconv.o
__php_iconv_strlen in iconv.o
__php_iconv_strpos in iconv.o
__php_iconv_mime_decode in iconv.o
__php_iconv_mime_decode in iconv.o
__php_iconv_mime_decode in iconv.o
_zif_iconv_substr in iconv.o
_zif_iconv_substr in iconv.o
_php_iconv_stream_filter_dtor in iconv.o
_zif_iconv_mime_encode in iconv.o
_zif_iconv_mime_encode in iconv.o
"_iconv_open", referenced from:
_php_iconv_string in iconv.o
__php_iconv_strlen in iconv.o
__php_iconv_strpos in iconv.o
__php_iconv_mime_decode in iconv.o
__php_iconv_mime_decode in iconv.o
_zif_iconv_substr in iconv.o
_zif_iconv_substr in iconv.o
_zif_iconv_mime_encode in iconv.o
_zif_iconv_mime_encode in iconv.o
_php_iconv_stream_filter_factory_create in iconv.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make: *** [sapi/cli/php] Error 1

Anyone know what this might mean and how I can go about fixing it.

Regards,
Eric