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Ld: cannot perform PE operations when PE output file fails

I am new to operating system programming, and I am reading a book that gives a simple kernel example as follows:

main() {
   char *video_memory = 0xb8000;
   *video_memory = 'X';
}

To compile this file called kernel.c, I use MinGW under Windows 7 as follows:

gcc -ffreestanding -c kernel.c -o kernel.o

This creates the kernel.o object file. However, the following command does not work.

ld -o kernel.bin -Ttext 0x1000 kernel.o --oformat binary

I get the following error:

ld: cannot perform PE operations on non PE output file 'kernel.bin'

I can not solve the problem. Please help me.

thank

After Ross's help, I managed to move on to a core shift. However, I cannot call the C function from Kernel_entry.asm. Moreover, when I remove the C function from my kernel.bin and change the code as shown below, three strange characters are displayed on the screen.

Kernel_entry.asm is as follows:

[bits 32]
;[extern _start]
mov ebx, MSG_KERNEL_ENTRY
call print_string_pm
;call _start
jmp $

%include "print_string_pm.asm"

MSG_KERNEL_ENTRY db "Kernel entry is invoked", 0

bootsec.asm is as follows:

[org 0x7c00]

KERNEL_OFFSET equ 0x1000

mov [BOOT_DRIVE], dl
mov bp, 0x9000
mov sp, bp
mov bx, MSG_REAL_MODE
call print_string
call load_kernel
call switch_to_pm

jmp $

%include "print_string.asm"
%include "disk_load.asm"
%include "gdt.asm"
%include "print_string_pm.asm"
%include "switch_to_pm.asm"
%include "clear_screen.asm"
[bits 16]
load_kernel:
mov bx, MSG_LOAD_KERNEL
call print_string

mov bx, KERNEL_OFFSET
mov dh, 15
mov dl, [BOOT_DRIVE]
call disk_load

ret


[bits 32]

BEGIN_PM:
;call clear_screen
mov ebx, MSG_PROT_MODE
call print_string_pm
call KERNEL_OFFSET
jmp $

BOOT_DRIVE  db 0      
MSG_REAL_MODE   db "Started in 16-Bit Real Mode", 0
MSG_PROT_MODE   db "Successfully switched to 32-Bit Protected Mode", 0 
MSG_LOAD_KERNEL db "Loading Kernel into memory", 0  

times 510 - ($ - $$) db 0

dw 0xaa55

, Kernel_entry.asm . , .

+4
1

, , . main, GG MinGW __main . :

start() {
   char *video_memory = 0xb8000;
   *video_memory = 'X';
}

, kernel_entry.asm :

[bits 32]
[extern _start]
call _start
jmp $

, , :

ld -T NUL -o kernel.tmp -Ttext 0x1000 kernel_entry.o kernel.o
objcopy -O binary -j .text  kernel.tmp kernel.bin

PECOFF, . :

copy /b boot_sect.bin+kernel.bin os-image
+7

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