From: <kvogt AT UVic DOT CA>
Newsgroups: comp.os.msdos.djgpp
Subject: gcc 'undefined reference' error
Date: Wed, 22 Aug 2001 21:59:07 -0700
Organization: University of Victoria
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hello,

I am getting 'undefined reference' link errors, and I do not know why.

Sample code:
#include <stdio.h>
#include <pc.h>
int main( void )
{
   ScreenMode(); // declared in pc.h, defined in pc.c
   return 1;
}

gcc command:
gcc -o test.exe test.c -lpc

error:
c:/djgpp/tmp\ccFN3J0x.o(.text+0x78):test.c: undefined reference to
"ScreenMode"

I get the error with other functions within pc.h, and also with other
functions from other libraries. I checked that libpc.a is in my 'lib'
directory. As far as I know, I am using the proper versions for
everything. I used the -v option for gcc to check if the RSXNTDJ
directories were being searched before the DJGPP dirs, but that is not
happening.

The linker has no trouble finding pc.h, but why does it not
recognize the functions within?

I would appreciate any help on this. Thanks :0)

Kevin