From: "Michael Stewart" <mike AT reggin DOT freeserve DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: getting gcc to work with C++ classes
Date: Fri, 27 Aug 1999 08:44:24 +0100
Organization: (Posted via) Netcom Internet Ltd.
Lines: 27
Message-ID: <7q5fl2$dek$1@taliesin.netcom.net.uk>
References: <37C61861 DOT 832BAEDF AT asan DOT com>
NNTP-Posting-Host: hgty.capgemini.co.uk
X-Trace: taliesin.netcom.net.uk 935739874 13780 194.42.240.2 (27 Aug 1999 07:44:34 GMT)
X-Complaints-To: abuse AT corp DOT netcom DOT net DOT uk
NNTP-Posting-Date: 27 Aug 1999 07:44:34 GMT
X-Newsreader: Microsoft Outlook Express 4.72.3155.0
X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3155.0
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

G Jaye wrote in message <37C61861 DOT 832BAEDF AT asan DOT com>...
>I'm a teacher and many of my C++ students will have Win98 systems. To
>that end, I just installed GNU's package (using its Win 9x hard disk
>installation program) on my Win98 system's E drive, and everything seems
>pretty well-behaved except the C++ aspect of the DJGPP gcc compiler, ver
>2.7.2. (C works just fine!) Consider the statement below, given the
>directive #include <iostream.h> and source file extensions cc, cpp, and
>cxx (I tried all 3).
>
>   cout << "Hello world\n";
>
>The 2 error messages this produces are:
>1. undefined reference to 'cout'
>2. undefined reference to 'ostream::operator<<(chr const *)
>
>Clearly iostream.h is being found or the 2 error messages wouldn't
>occur. Yet it doesn't seem to do any good. The only copy of iostream.h
>is in the E:\fsf\lang\cxx directory. Attempts to use the C++ string
>class declared in <string> fare no better. Am I better off re-installing
>from the DJGPP web site or elsewhere? Hoping somebody can get tell me
>how to resolve this before Sept 9!!!Thanks...


It sounds like you are not linking in the C++ library (FAQ 8.7).
Either link with -lstdcxx or use gxx to do it for you.