Thread: /usr/bin/ld: cannot find -lpq++

i tried to compile gnuworld irc services for undernet.
and i finished ./compile..
that was ok.
when i tried to use make command it gave me this error.
/usr/bin/ld: cannot find -lpq++
collect2: ld returned 1 exit status
and checked your mailin list and i found only i sollution and it says

find /usr -name "libpq++*" 

i did that command and also i did 
find / -name "libpq++*"
find / -name "lpq++*"

but it didnt find anything..
so what am i suppose to do ?
i think i have problems with me linux`s lib..
pls help me to fix this problem..
thanks alot..
sincerely..