Getting started with libpq++

I'm an experienceed C++ programmer (but not that experienceed in the
Linux environment) and I'm trying to use libpq++ under Redhat Linux 5.0.

As a previous archived post mentioned (but I couldn't follow the thread
to a reply), man mentions sample files but they're not there. I've
downloaded postgresql-6.5.3.tar.gz, gunzip-ed it, and can't get tar to
list the files (using tar -t or tar --list) so I can then extract only
the samples.

When I try to compile a simple program:
#include <libpq++.h>
#include <stdlib.h>

void main()
{
PgDatabase data("cpd");
}

I get lots of messages along the lines of
/tmp/cca121441.o: In function `PgDatabase::~PgDatabase(void)':
/tmp/cca121441.o(.gnu.linkonce.t._._10PgDatabase+0x15): undefined
reference to `
PgConnection::~PgConnection(void)'

I've tried g++ with -lpq, but nothing changes. I've even tried explicitly
#including pgconnection.h, but to no avail.

So, I guess this isn't a particuarly tricky one to those with libpq++
running fine, but it's a massive holdup to me. Any help gratefully
received.

Thanks

Paul.

-- 
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Expressed opinions are usually my own.
Especially if they're any good (of course).
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