can't do ./configure

[wikisb]

hi all again!
i'm stuck with

./configure --with-pgsql --enable-server --with-net-snmp --with-jabber --with-libcurl

it says the following:

checking for pg_config... no
checking for function PQserverVersion()... no
configure:error:PostgresSQL library not found.

at my ld.so.conf i got the paths of the libs and i did ldconfig to load them.
its wierd because i installed postgreSQL, PHP, apache and zabbix about 2 weeks ago and it worked fine, i also installed net-snmp.rpm to monitorize things with snmp but yesterday i deleted the rpms of net-snmp & installed net-snmp.tar.gz then i runned zabbix & it worked for 5 min (i did it to acces some OID's i couldn't acces with the net-snmp.rpm). now i'am not able to use zabbix. i have searched posts & stuff but didnt' find nothing useful to me.
the second wierd thing is that ./configure works if i don't put the parameter --enable-server wth, so the --enable-server seems to have something to do with my problem?
i would be very glad if someone has an idea of what is happening
thanks !!

[Bill Wang]

Did it mean that you have to install postgreSQL-devel first or something like that.

[wikisb]

hi Bill Wang
i installed Postgressql-8.3.3.tar.gz. with a tar.gz you are not supose to install any packet am i wright?.
zabbix complains about libnetsnmp.so.10 doesn't exists:

./zabbix_Server: error while loading shared libraries: libnetsnmp.so.10 cannot open shared object file:No such file opr directory

but first i want to know why i can't do a ./configure to install again zabbix server
thanks!!