How to specify Win32 as output when invoking GCC using MinGW on Windows

How to specify Win32 as output when invoking GCC using MinGW on Windows.

Below I've posted my source code. My objective is to interface assembly with C code and produce an executable.

I start assembling the add.asm to Win32 using the following NASM command:

nasm -f win32 add.asm

Then it should be possible to invoke GCC using both C and object files?

gcc -o add add.obj call_asm.c

However, this results in an a linkage error:

C:\Users\nze\AppData\Local\Temp\cckUvRyC.o:call_asm.c:(.text+0x1e): undefined reference to `add'collect2.exe: error: ld returned 1 exit status

If I instead compile to ELF using

nasm -f elf add.asm

the command (this time using the ELF file add.o)

gcc -o add add.o call_asm.c

works perfectly.

How can I tell GCC that my object files are in Win32 format, so that it should compile call_asm.c to Win32 before linking? (I guess this is the core of the problem, please comment whether I'm correct).

call_add.c:

#include <stdio.h>extern int add(int a, int b);int main(){  printf("%d", add(7, 6));}

add.asm:

    BITS 32    global _add_add:    push ebp    mov ebp, esp    mov eax, [ebp+8]    mov ebx, [ebp+12]    add eax, ebx    mov esp, ebp    pop ebp    ret