Date: Sun, 14 Jan 1996 14:04:26 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: Peter Plum <enoch AT terranet DOT terranet DOT ab DOT ca>
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: Peter: Help with sample file 'main.c'


On Sun, 14 Jan 1996, Peter Plum wrote:

> This program was in the Samples directory but doesn't seem to work.  I get
> the following message.
> 
> 
> GNU C++ Compile: MAIN.c
> MAIN.c(.text+0x4b): undefined reference to `yyparse'

Please read the FAQ, section 8.8.  It describes all the problems of this 
kind.  For sin(), use -lm.

> I also find no reference to 'yyparse' in any of the help files or any c/c++
> book.

`yyparse' is a function which parser generators like Yacc and Bison 
generate given a description of the grammar.  You then should link your 
main program against the C file which those programs produce.

> #include "hc.h"

From this I guess you are trying to build a calculator program, right?  
The sources for that program should include a file with a .y extension, 
which is the description of its input language.  Run Yacc or Bison on 
that file, and you will get a .c file which defines `yyparse'.  The DJGPP 
archives include a port of GNU Bison program in the file bsnNNNbn.zip 
(where NNN is the version number); please also download bsnNNNdc.zip (the 
docs), so you know how to use it.