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I'm trying to assemble a C file and a ASM file together and somehow I get this "ld: Unsupported PEI architecture: pei-i386" error when using LD. I used this tutorial with some modified code from an answer to this question

Following the entire set of the files of interest

1) The main Assembly file

;;kernel.asm
bits 32 ;nasm directive - 32 bit
global entry
extern _kmain ;kmain is defined in the c file

section .text
entry: jmp start

 ;multiboot spec
 align 4
 dd 0x1BADB002 ;magic
 dd 0x00 ;flags
 dd -(0x1BADB002 + 0x00) ;checksum. m+f+c should be zero

start:
 cli ;block interrupts
 mov esp, stack_space ;set stack pointer
 call _kmain
 hlt ;halt the CPU

section .bss
resb 8192 ;8KB for stack
stack_space:

2) The C file

/*
* kernel.c
*/

void kmain(void)

 const char *str = "kernel 1.0";
 char *vidptr = (char*)0xb8000; // video mem begins here
 unsigned int j = 0;
 unsigned int i = 0;

 while(j < 80 * 25 * 2) 
 /* blank char */
 vidptr[j] = ' ';
 /* attr. byte - light gray on black screen */
 vidptr[j+1] = 0x07;
 j = j + 2;
 

 j = 0;

 /* this loop writes the string into vram */
 while(str[j] != '') 
 /* the characters ASCII */
 vidptr[i] = str[j];
 /* atr. byte - give character black bg and light gray fg */
 vidptr[i + 1] = 0x07;
 ++j;
 i = i + 2;
 

3) The Linker file

/*
* link.ld
*/
OUTPUT_FORMAT(pei-i386)
ENTRY(entry)

SECTIONS
 
 . = 0x100000;
 .text : *(.text) 
 .data : *(.data) 
 .bss : *(.bss) 
 

4) a Batch file I made for simplifying the process to build it all. I'm using cygwin

@echo off

echo Building...
nasm -f elf32 kernel.asm -o kasm.o
echo ok
gcc -m32 -c kernel.c -o kc.o -ffreestanding -nostdlib -nostdinc
echo ok
ld -T link.ld -o kernel kasm.o kc.o -build-id=none
echo ok
objcopy -O elf32-i386 kernel kernel.elf
echo ok
echo Done.

How to fix this error?