For example, to link DJGPP and NASM you need:
Set up DJGPP:
set djgpp=c:\djgpp\DJGPP.ENV
set path=%path%;c:\djgpp\bin
A C file:
#include <stdio.h>
extern void call0();
int main(void)
{
call0();
return 0;
}
An ASM file:
bits 32
;Things from NASM are declared global:
;;
global _call0
;Things from DJGPP are declared extern:
;;
extern _printf
;If we don't put the code in section .text,
;we cannot export it:
;;
section .text
_call0:
ret
A BAT file for building:
nasm asm.asm -f coff -o asm.o
gcc asm.o c.c -o exe.exe
----- Forwarded Message ----- From: Knedlik <kned...@trainmazeland.com>To:
"freedos-devel@lists.sourceforge.net"
<freedos-devel@lists.sourceforge.net>Sent: Thursday, January 12, 2023 at
01:45:18 PM CSTSubject: [Freedos-devel] Linking asm with C
Hello,
I’m currently trying to make a function in a separate assembly file, but I’m
having problems linking it with a C program. Are there any guides that show how
to do this?
Thanks in advance,
-Knedlik
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