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
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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.

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