From: Kemin Zhou <kzhou@molsci.org>
To: pgsql-interfaces@postgresql.org
Subject: difficulty building the C++ interface
Date: Tue, 05 Jun 2001 11:16:33 -0700
Message-ID: <3B1D2201.FDE24D0A@molsci.org> (raw)
I am having a lot of trouble in building the C++ interface to 7.1
I could build it.
But when I tried to build the test programs I have to add
#inlcude <libpq-fe.h>
to my source code because the libpq++ depends on libpq. The objects
of libpq++ does not include libpq-fe.
I could build my test program with the follwing makefile
Here is the first few lines of the test file
=========================
#include <iostream.h>
#include <libpq++.h>
#include <libpq-fe.h>
#include <crypt.h>
int main() {
char state_code[3];
char query_string[256];
PgDatabase data("dbname=testdb");;
======================================
Here is the makefile:
HEADERDIR= /usr/local/pgsql/include
LIBPQDIR= /usr/local/pgsql/lib
CXXFLAGS= $(CFLAGS)
CXXFLAGS+= -I $(HEADERDIR)
LDFLAGS+= -L $(LIBPQDIR) -lpq++ -lpq
testlpq : tlibpq.cpp
g++ $(CXXFLAGS) -o $@ $? $(LDFLAGS)
==================
make went well
But I got this message:
when run the binary
[kzhou@rabbit testpgsql]$ testlpq
testlpq: error in loading shared libraries: libpq++.so.3: cannot open
shared object file: No such file or directory
my /usr/local/pgsql/lib dir apparently has all these files
[kzhou@rabbit lib]$ ls
libecpg.a libpgeasy.a libpq++.a libpq.a
plpgsql.so
libecpg.so libpgeasy.so libpq++.so libpq.so
libecpg.so.3 libpgeasy.so.2 libpq++.so.3 libpq.so.2
libecpg.so.3.2.0 libpgeasy.so.2.1 libpq++.so.3.1 libpq.so.2.1
Can someone give me some help?
Is the C++ inter face in a usable format?
Should I waste time on this interface?
Kemin
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To: pgsql-interfaces@postgresql.org
Cc: kzhou@molsci.org
Subject: Re: difficulty building the C++ interface
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