Mail Archives: djgpp/1998/02/07/10:18:28
From: | "Bruce Merry (the Almighty Cheese)" <bmerry DOT nospam AT iafrica DOT com>
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Newsgroups: | comp.os.msdos.djgpp,comp.lang.c
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Subject: | Can't get external variables to work!??
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Date: | Sat, 07 Feb 1998 16:48:55 +0200
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Organization: | Confusion
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Lines: | 43
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Message-ID: | <34DC7457.6A0A7521@iafrica.com>
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NNTP-Posting-Host: | 196-31-84-77.iafrica.com
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Mime-Version: | 1.0
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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Hi
I've been using C and C++ for quite a while now, but up to now I've not
needed to share a variable between source files. What I am trying at the
moment is basically (with other stuff removed):
c_types.h:
#ifndef __my_c_types_h
#define __my_c_types_h
typedef unsigned char byte;
#endif
kbd.h:
#ifndef __my_kbd_h
#define __my_kbd_h
#include "c_types.h"
extern byte keys[128];
#endif
program.c:
#include "c_types.h"
#include "kbd.h"
/* stuff with the keys array */
kbd.c:
#include "c_types.h"
static volatile byte keys[128];
/* code for keyboard handling */
Basicly, all the source files compile into objects fine, but at link
time the error 'undefined reference to keys' multiple times. What am I
doing wrong (I'm using DJGPP 2, BTW).
Thanks in advance
Bruce
--
Please remove the ".nospam" from my address before replying
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| Bruce Merry (Entropy) | bmerry at iafrica dot com |
| Proud user of Linux! | http://www.cs.uct.ac.za/~bmerry |
| This sentence contradicts itself; no actually it doesn't. |
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