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From: ciemo@bananapc.wpd.sgi.com (Dave Ciemiewicz)
Newsgroups: comp.sys.sgi
Subject: Re: getopt and C++
Keywords: Problem
Message-ID: <1991Mar4.190323.7378@dragon.wpd.sgi.com>
Date: 4 Mar 91 19:03:23 GMT
References: <1991Mar04.161843.27932@cs.ruu.nl>
Sender: news@dragon.wpd.sgi.com (CNews Account)
Reply-To: ciemo@bananapc.wpd.sgi.com (Dave Ciemiewicz)
Organization: Silicon Graphics, CASE Group
Lines: 27

In article <1991Mar04.161843.27932@cs.ruu.nl>, markov@cs.ruu.nl (Mark Overmars) writes:
|> I have a simple question: How do I use the routine getopt with C++. What I did
|> was to put
|> 
|>    extern int getopt(int,char **,char *);
|> 
|> in the program. Now the loader complaints that getopt__FiPPcPc is undefined.
|> 
|> How do I solve this?
|> 
|> Mark Overmars

If you are using C++ 2.0, you should change the extern definition to:

	extern "C" int getopt(int, char**, char*);

The "C" denotes that external routine is a conventional C routine and directs
the compiler to use the non-type-safe (unmangled) name for all references.

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