Can't compile C++ programs from RH 7.1 in RH9

I am having trouble compiling programs (that I created back in Red Hat 
v7.1) because of the libpq++ libs (they don't exist in RH9). I tried 
finding them on the net but can't install them because of the various 
dependency conflicts with RH9.
My compile statement is (in a script):
c++ -o ../cgi-bin/$1.cgi -I/usr/include/libpq -lpq++ $1.c++ cgi.o 
HTMLstream.o
The include statement in the code is:
#include <pgsql/libpq++.h>


How can I get this to compile now in RH9? Is there a replacement for the 
old libpq++ libs I can point to? Thx!
Mike.



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