php to pgsql question

HI guys!<br />    I've been encounting a problem when I configured PHP to support Postgres.I think may be someone in
herecan solve my problem.<br />    Postgres version is 8.1.4,and the install path is /usr/local/pgsql, PHP is 4.4.2.<br
/>    I use this parameter to configure PHP    --with-pgsql=/usr/local/pgsql   (I also try /usr/local,
/usr/local/lib,etc.still do not work)<br />    when I run make,I get this error message:<br />    <span
style="font-weight:bold; color: rgb(0, 0, 0); font-family: 宋体;">main/internal_functions_cli.lo(.data.rel+0x28):
undefinedreference to `pgsql_module_entry'     collect2: ld returned 1 exit status make: *** [sapi/cli/php] Error 1<br
/><br/>  </span><span style="color: rgb(0, 0, 0); font-family: 宋体;">Anyone know what the problem is? And how to solve
it?<br/><br />  Thanks in advance!<br /></span><br />