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# vim: noexpandtab tabstop=4 shiftwidth=4
CXX = i386-elf-gcc
CFLAGS = -std=gnu99 -ffreestanding -O2 -Wall -Wextra -nostdlib -Iinclude
ASM = nasm
OBJECTS = boot.o gdt.o isr.o idt.o port.o print.o kernel.o
%.o : src/%.c
$(CXX) $(CFLAGS) -o $@ -c $<
%.o : src/%.s
$(ASM) -felf32 $< -o $@
os.bin : $(OBJECTS)
$(CXX) -T linker.ld -o os.bin $(CFLAGS) $(OBJECTS) -lgcc
os.iso : os.bin
mkdir -p isodir/boot/grub
mv os.bin isodir/boot/os.bin
echo "menuentry 'os' {" >> grub.cfg
echo " multiboot /boot/os.bin" >> grub.cfg
echo "}" >> grub.cfg
mv grub.cfg isodir/boot/grub/grub.cfg
grub-mkrescue -o os.iso isodir
clean :
rm -rf *.o *.iso *.bin *.cfg isodir/
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