From owner-freebsd-questions  Fri Jul 21 01:31:59 1995
Return-Path: questions-owner
Received: (from majordom@localhost)
          by freefall.cdrom.com (8.6.11/8.6.6) id BAA15732
          for questions-outgoing; Fri, 21 Jul 1995 01:31:59 -0700
Received: from campino.informatik.rwth-aachen.de (campino.Informatik.RWTH-Aachen.DE [137.226.225.2])
          by freefall.cdrom.com (8.6.11/8.6.6) with SMTP id BAA15723
          for <freebsd-questions@freefall.cdrom.com>; Fri, 21 Jul 1995 01:31:53 -0700
Received: from gilberto.physik.rwth-aachen.de by campino.informatik.rwth-aachen.de 
        (4.1/campino-8) id AA21314; Fri, 21 Jul 95 10:31:35 +0200 
Received: (from kuku@localhost) by gilberto.physik.rwth-aachen.de (8.6.8/8.6.9) id KAA26537; Fri, 21 Jul 1995 10:44:21 +0200
Message-Id: <199507210844.KAA26537@gilberto.physik.rwth-aachen.de>
Subject: Re: Gnu C++ Compilation Problem
To: amnuay@comnet.spu.ac.th (amnuay muthitacharoen)
Date: Fri, 21 Jul 1995 10:44:20 +0200 (MET DST)
Cc: freebsd-questions@freefall.cdrom.com (user alias)
In-Reply-To: <Pine.AUX.3.91.950721114141.8678A-100000@comnet.spu.ac.th> from "amnuay muthitacharoen" at Jul 21, 95 11:42:44 am
From: Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de>
Reply-To: Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de>
X-Mailer: ELM [version 2.4 PL23]
Content-Type: text
Content-Length: 994       
Sender: questions-owner@FreeBSD.org
Precedence: bulk

> 
> 
> 	When I compiled the following Gnu C++ program in FreeBSD Unix
> installed from the FreeBSD CDROM :-

How did you compile? I'm sure you forgot to specify -lm
in the link command line.

g++ -o file file.cc -lm


> 
> #include <iostream.h>
> #include "/usr/include/math.h"
> void
> main()
> {
> 	int num ;
> 
> 	cout << "Enter num : " ;
> 	cin >> num ;
> 	cout <<"The cube of " << num << " is " << pow(num,3) <<" .\n" ;
> }
> 
> 
> 	I got the following messages :-
> 
> 1) /var/tmp/cc0100421.0: Undefined symbol '_pow' referenced from text segment
> 
> 2) /usr/lib/libg++.so.2.0: Undefined symbol "_pow" referenced
> 
> 
> 	Please tell me what I had done wrong or did I missed out something ?
> 
> 
> 	Regards
> 
> 	Amnuay Muthitacharoen
> 
> 

--Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de
FreeBSD blues.physik.rwth-aachen.de 2.2-CURRENT FreeBSD 2.2-CURRENT #0:
Tue Jul 18 14:49:19 MET DST 1995     kuku@blues.physik.rwth-aachen.de:
/usr/src/sys/compile/BLUESGUS  i386