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linking error

From: "anuj" <Anuj(at)in-control(dot)de>
To: <pgsql-hackers(at)postgresql(dot)org>
Subject: linking error
Date: 2000-07-04 05:43:59
Message-ID: 03e301bfe57c$d1f12350$ (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
 There is a small  'C' program.
 Compile successfully and linking error is coming in PQsetdbLogin function.
 This program will run on Linux RH6. How to remove this linking error.
Any other way to connect to backend PostgrsSQL via 'C' program. 
Please waiting your valuable guidance.
 ******* Compile Result ************
 [rootanuj(at)Lux2 rootanuj]$ gcc -S conn.c
 [rootanuj(at)Lux2 rootanuj]$ gcc conn.c
 /tmp/ccroTWA2.o: In function `main':
 /tmp/ccroTWA2.o(.text+0x48): undefined reference to `PQsetdbLogin'
 collect2: ld returned 1 exit status
 [rootanuj(at)Lux2 rootanuj]$
 /* conn.c */
 #include <stdio.h>
 #include "/usr/include/pgsql/libpq-fe.h"
       char       *pghost,  *pgport,   *pgoptions,  *pgtty;
       char       *dbName;

       PGconn     *conn;
       pghost = NULL;              /* host name of the backend server */
       pgport = "5432";              /* port of the backend server */
       pgoptions = NULL;           /* special options to start up the backend server */
       pgtty = NULL;               /* debugging tty for the backend server */
       dbName = "Mydb";
       /* make a connection to the database */
       conn = PQsetdbLogin(pghost, pgport, pgoptions, pgtty,dbName,"username","password");
 /* Compile successfully and linking error is coming in PQsetdb function. */
 /* Compile cc -S conn.c */

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