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RE: [INTERFACES] RE: libpq++ and gcc

From: Josh Friess <jjfriess(at)vicidesign(dot)com>
To: "'joris(dot)esch(at)esat(dot)kuleuven(dot)ac(dot)be'" <joris(dot)esch(at)esat(dot)kuleuven(dot)ac(dot)be>
Cc: "'pgsql-interfaces(at)postgresql(dot)org'" <pgsql-interfaces(at)postgresql(dot)org>, "'pgsql-novice(at)postgresql(dot)org'" <pgsql-novice(at)postgresql(dot)org>
Subject: RE: [INTERFACES] RE: libpq++ and gcc
Date: 1998-10-07 08:22:02
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-interfaces
Hi everyone,

I sent mail to these lists about a month ago, and got a few responses about 
the same thing.  Apparently my mail system was down, but now it's up again.

I have written several applications for use with postgres.  All of them 
compile; none of them link.  They all raise undefined symbol errors during 
the linking phase because I'm not linking properly with the libpq++ 

I originally had installed postgres6.3.2 via an rpm from RedHat.  Today I 
downloaded the tar.gz'ed source and followed the installation instructions 
exactly.  I finished, and tried compiling/linking my code using the -lpq 
and -lpq++ options, and neither of them worked.

I am a novice to g++.  I know about 4 flags, and for the most part (until 
now) I have gotten by fine.  I really don't know how to configure this 
properly.  The documentation on libpq/++ is limited.  Could someone please, 
please help me?  I have no idea where to go from here...

Josh Friess
Vici Design, LLC.

-----Original Message-----
From:	Joris Esch [SMTP:joris(dot)esch(at)esat(dot)kuleuven(dot)ac(dot)be]
Sent:	Wednesday, October 07, 1998 7:46 AM
To:	pgsql-interfaces(at)postgreSQL(dot)org
Subject:	[INTERFACES] RE: libpq++ and gcc

Hello everybody:

KaDe wrote:

Did you get an answer ?

I think the problem is a question of path ...
you have to add something as  -L.. -pq -pq++ as parameters for your gcc
I can't remember precisely, have a look in the makefile of the libpq++
directory and try to guess.
I resolved the problem of the path access copying all the headers files of
postgres 1 level of directory upper.
I'm sure there is a smarter way, but I've not yet found it.

I hope this can help you:

in /etc/profile,  i have:
export PGLIB

My headers are in /usr/include. There i have a libpq++.h which i

Then, when i compile i type e.g.:

c++ test_pgsql_libpq++.cpp -o test_pgsql_libpq++ -lpq++ -lpq (Lowercase L)

If your headers are elsewhere, try -I/my_header_directory (Uppercase i ).

I use egcs, but it doesn't differ much from gcc,  i think.

good luck
joris esch, student in electrical engineering
		Power is knowledge.

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Next:From: bugmanDate: 1998-10-07 09:26:26
Subject: bug report (i think :-/ )
Previous:From: Thomas G. LockhartDate: 1998-10-07 02:42:24
Subject: Re: [INTERFACES] re : libpq++ - getting it to work

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