Xref: news2.mv.net comp.os.msdos.djgpp:1919
From: strider7 AT unm DOT edu
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Problem with cout in V2
Date: Thu, 14 Mar 1996 09:33:32 -0700
Organization: University of New Mexico, Albuquerque
Lines: 42
Message-ID: <31484A5C.6C57@unm.edu>
References: <4i708c$8as AT news DOT asu DOT edu>
NNTP-Posting-Host: ppp_030.unm.edu
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

deafen AT imap2 DOT asu DOT edu wrote:
> 
> Skinny:
> OS: Dos 7.0 (Win95)
> DPMI: CWSDPMI
> DJGPP: V2, djdev, gcc 2.7.2, bnu 2.5.2, gpp 2.7.2, libgpp 2.7.1
> Installed to D:\DJGPP
> 
> Code:
> // test.cpp
> #include <iostream.h>
> 
> main()
> {
>   cout << "This is a test.\n";
>   return 0;
> }
> 
> Errors:
> At compile time, this gives undefined reference errors for 'cout' and
> 'ostream::operator<<(char const *)'.
> 
> DJGPP.ENV is properly specified in the environment, and is correct.  cpp
> properly preprocesses; the error apparently occurs at link time, judghing
> by the output of gcc -v -o test.exe test.cpp.
> 
> If the character literal is changed to an integer literal (cout << 8;)
> the second error becomes 'ostream::operator<<(int)'.
> 
> This is apparently a problem with either iostream.h or libgpp.  Am I
> misusing the cout stream, or does G++ handle iostreams differently than
> other versions of C++?
> 
> Thanks in advance for any help you can offer.
> 
> --
> Hal Haygood :: PC/Network/Unix technician, Suntek Integrated Technologies
> hal AT suncap DOT com  ::  deafen AT asu DOT edu  ::  hagar AT mail DOT hvs DOT com
> My opinions and those of my employer rarely, if ever, coincide.

this question is far too often asked, but you must compile with the 
-lgpp option to link the c++ library