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From: dgrisner AT netcom DOT com (David G. Risner)
Subject: Objective-C and DJGPP V2.0
Sender: dgrisner AT netcom8 DOT netcom DOT com
Organization: Southwestern Univ. Law Library
Distribution: Global
Date: Tue, 17 Oct 1995 19:13:27 GMT
Lines: 78
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Dj-Gateway: from newsgroup comp.os.msdos.djgpp

Is anyone out there doing Objective-C with DJGPP version 2.0?

I would like to switch over to using version 2.0, but I'm having
problems getting a simple Objective-C program to compile.

I have compiled this C program:

#include <stdio.h>

main()
{
	printf("This is a test.\n");
	return (0);
}

using just:  "gcc test.c".
This works fine, but the following Objective-C program doesn't work
when compiled by doing the following three step process:

gcc -o newobj.o -c newobj.m
gcc -o main.o -c main.m
gcc newobj.o main.o -lobjc

I get:
_eprintf.c(.text+0x10): undefined reference to `_iob'
_eprintf.c(.text+0x1a): undefined reference to `_iob'

Am I missing something?

Thanks,
David

----- file main.m
#include <stdio.h>
#include "objc/Object.h"
#include "newobj.h"

main()
{
  id test, test2;
  test = [Object new];
  test2 = [NewObj new];
  printf("My class is %s\n", [test name]);
  printf("Class two is %s\n", [test2 name]);
  [test2 printJunk];
  return 0;
}

------  file newobj.h
@interface NewObj:Object
{
}

-printJunk;

@end

------ file newobj.m
#include <stdio.h>
#include "objc/Object.h"
#include "newobj.h"

@implementation NewObj

-printJunk
{
  printf("Junk\n");
  return self;
}

@end


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David G. Risner                                           dgrisner AT netcom DOT com
Southwestern University School of Law Library                 Los Angeles, CA
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