note

bootloader/boot.asm

+; This code file would be compiled and placed in MBR first block. 
+
 [bits 16]
 [org 0x7c00]
 

kernel/Makefile

@@ -2,13 +2,15 @@
 assemble: kernel head
 	ld -o kernel.img -Ttext 0x7e00 --oformat binary image_head.o kernel.o -m elf_i386
 	# Sector 1 = bootloader, Sector 2 - (512B TO 64K) = kernel
+	# Extend kernel.img to correct size. 
+	test $$(stat -c %s kernel.img) -le 65024
 	truncate --size=65024 kernel.img
 
 head:
 	nasm -f elf image_head.asm -o image_head.o
 
 kernel:
-	gcc -ffreestanding -fno-pie -c kernel.c -o kernel.o -m32
+	g++ -ffreestanding -fno-pie -c kernel.cc -o kernel.o -m32
 
 clean:
 	rm *.o *.img