From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Stephen Lee <slee@acm.jhu.edu>
Cc: pgsql-interfaces@postgresql.org
Subject: Re: libpq (Postgres 7.2.1) + MacOS X 10.1.5 problem
Date: Wed, 21 Aug 2002 00:31:01 -0400 (EDT)
Message-ID: <200208210431.g7L4V1215205@candle.pha.pa.us> (raw)
In-Reply-To: <20020821040106.1E6E113EA7@centaur.acm.jhu.edu>
Get that -lpq after the C file in the link line.
---------------------------------------------------------------------------
Stephen Lee wrote:
> Here's my simple program:
>
> #include <stdio.h>
> #include <libpq-fe.h>
>
> int main() {
> int i, j;
> PGconn *dbconn;
> PGresult *results;
>
> dbconn = PQconnectdb(
> "hostaddr=AN_IP_ADDR user=USERNAME dbname=SOMEDB"
> );
>
> results = PQexec( dbconn, "select * from account" );
>
> for( i = 0; i < PQntuples( results ); i++ ) {
> printf( "Row #%i\n", i );
>
> for( j = 0; j < PQnfields( results ); j++ ) {
> printf( " Field: %16s / Value: %s\n",
> PQfname( results, j ), PQgetvalue( re
> sults, i, j )
> );
> }
> }
>
> PQfinish( dbconn );
> return( 0 );
> }
>
> I'm trying to compile a simple program using libpq and initially get
> the following linker error:
>
> -g -Wall -I/usr/local/pgsql/include -L/usr/local/pgsql/lib -lpq test.c
> -o test
> /usr/bin/ld: table of contents for archive:
> /usr/local/pgsql/lib/libpq.a is out of date; rerun ranlib(1) (can't
> load from it)
> make: *** [all] Error 1
>
> After running ranlib on libpq.a, I get the following:
>
> gcc -g -Wall -I/usr/local/pgsql/include -L/usr/local/pgsql/lib -lpq
> test.c -o test
> /usr/bin/ld: Undefined symbols:
> _PQconnectdb
> _PQexec
> _PQfinish
> _PQfname
> _PQgetvalue
> _PQnfields
> _PQntuples
> make: *** [all] Error 1
>
> Any ideas?
>
> -Stephen
>
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--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
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To: pgsql-interfaces@postgresql.org
Cc: pgman@candle.pha.pa.us, slee@acm.jhu.edu
Subject: Re: libpq (Postgres 7.2.1) + MacOS X 10.1.5 problem
In-Reply-To: <200208210431.g7L4V1215205@candle.pha.pa.us>
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