From: Erik Max Francis <max AT alcyone DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: HELP: Bison, Flex & C++ class support...
Date: Thu, 17 Apr 1997 09:09:47 -0700
Organization: Alcyone Systems
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Message-ID: <33564B4B.50DD1411@alcyone.com>
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Programmed to death wrote:

> and got the following errors:
> 
>         bison.simple: In function `int yyparse()':
>         bison.simple:377: warning: implicit declaration of function
> `int yylex(...)'
>         cplus.lex: In function `int yylex()':
>         cplus.lex:21: warning: implicit declaration of function `int
> yyerror(...)'
>         d:/langs/djgpp/tmp\ccdaaaaa(.text+0x4b5):y_tab.cc: undefined
> reference to `yylex'
>         d:/langs/djgpp/tmp\cceaaaaa(.text+0x247):lexyy.cc: undefined
> reference to `yyerror'

These are warnings, not errors.

The undefined references are just telling you that it saw the use of a
function without a definition or prototype.  In other words, it hadn't
heard of, say, `yyerror' until it saw you calling it.

-- 
       Erik Max Francis, &tSftDotIotE / email / max AT alcyone DOT com
                     Alcyone Systems /   web / http://www.alcyone.com/max/
San Jose, California, United States /  icbm / 37 20 07 N  121 53 38 W
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