Makefile

# assembler
ASM = /usr/bin/nasm
# compiler
CC = /usr/bin/gcc
# linker
LD = /usr/bin/ld
# grub iso creator
GRUB = /usr/bin/grub-mkrescue
# sources
SRC = src
ASM_SRC = $(SRC)/asm
# objects
OBJ = obj
ASM_OBJ = $(OBJ)/asm
CONFIG = ./config
OUT = out
INC = ./include
INCLUDE=-I$(INC)

MKDIR= mkdir -p
CP = cp -f
DEFINES=

# qemu
QEMU= qemu-system-i386
QEMU_FLAGS=  -boot d -cdrom out/SimpleOS.iso -drive file=fat32.img,format=raw

# assembler flags
ASM_FLAGS = -f elf32
# compiler flags
CC_FLAGS = $(INCLUDE) $(DEFINES) -m32 -std=gnu99 -ffreestanding -Wall -Wextra 
# linker flags, for linker add linker.ld file too
LD_FLAGS = -m elf_i386 -T $(CONFIG)/linker.ld -nostdlib --allow-multiple-definition

# target file to create in linking
TARGET=$(OUT)/SimpleOS.bin

# iso file target to create
TARGET_ISO=$(OUT)/SimpleOS.iso
ISO_DIR=$(OUT)/isodir

OBJECTS=$(ASM_OBJ)/entry.o $(ASM_OBJ)/load_gdt.o\
		$(ASM_OBJ)/load_idt.o $(ASM_OBJ)/exception.o $(ASM_OBJ)/irq.o $(ASM_OBJ)/load_tss.o $(ASM_OBJ)/bios32_call.o\
		$(OBJ)/io_ports.o $(OBJ)/vga.o\
		$(OBJ)/string.o $(OBJ)/console.o\
		$(OBJ)/gdt.o $(OBJ)/idt.o $(OBJ)/isr.o $(OBJ)/8259_pic.o\
		$(OBJ)/keyboard.o $(OBJ)/mouse.o\
		$(OBJ)/kernel.o\
		$(OBJ)/gui.o\
		$(OBJ)/ext2.o\
		$(OBJ)/ide.o\
		$(OBJ)/tss.o\
		$(OBJ)/kheap.o\
		$(OBJ)/pmm.o\
		$(OBJ)/bios32.o\
		$(OBJ)/vesa.o\
		$(OBJ)/bitmap.o\
		$(OBJ)/panic.o\
		$(OBJ)/fat32.o\



all: $(OBJECTS)
	@printf "[ linking... ]\n"
	$(LD) $(LD_FLAGS) -o $(TARGET) $(OBJECTS)
	grub-file --is-x86-multiboot $(TARGET)
	@printf "\n"
	@printf "[ building ISO... ]\n"
	$(MKDIR) $(ISO_DIR)/boot/grub
	$(CP) $(TARGET) $(ISO_DIR)/boot/
	$(CP) $(CONFIG)/grub.cfg $(ISO_DIR)/boot/grub/
	$(GRUB) -o $(TARGET_ISO) $(ISO_DIR)
	rm -f $(TARGET)

$(ASM_OBJ)/entry.o : $(ASM_SRC)/entry.asm
	@printf "[ $(ASM_SRC)/entry.asm ]\n"
	$(ASM) $(ASM_FLAGS) $(ASM_SRC)/entry.asm -o $(ASM_OBJ)/entry.o
	@printf "\n"

$(ASM_OBJ)/load_gdt.o : $(ASM_SRC)/load_gdt.asm
	@printf "[ $(ASM_SRC)/load_gdt.asm ]\n"
	$(ASM) $(ASM_FLAGS) $(ASM_SRC)/load_gdt.asm -o $(ASM_OBJ)/load_gdt.o
	@printf "\n"

$(ASM_OBJ)/load_idt.o : $(ASM_SRC)/load_idt.asm
	@printf "[ $(ASM_SRC)/load_idt.asm ]\n"
	$(ASM) $(ASM_FLAGS) $(ASM_SRC)/load_idt.asm -o $(ASM_OBJ)/load_idt.o
	@printf "\n"

$(ASM_OBJ)/exception.o : $(ASM_SRC)/exception.asm
	@printf "[ $(ASM_SRC)/exception.asm ]\n"
	$(ASM) $(ASM_FLAGS) $(ASM_SRC)/exception.asm -o $(ASM_OBJ)/exception.o
	@printf "\n"

$(ASM_OBJ)/irq.o : $(ASM_SRC)/irq.asm
	@printf "[ $(ASM_SRC)/irq.asm ]\n"
	$(ASM) $(ASM_FLAGS) $(ASM_SRC)/irq.asm -o $(ASM_OBJ)/irq.o
	@printf "\n"

$(ASM_OBJ)/load_tss.o : $(ASM_SRC)/load_tss.asm
	@printf "[ $(ASM_SRC)/irq.asm ]\n"
	$(ASM) $(ASM_FLAGS) $(ASM_SRC)/load_tss.asm -o $(ASM_OBJ)/load_tss.o
	@printf "\n"

$(ASM_OBJ)/bios32_call.o : $(ASM_SRC)/bios32_call.asm
	@printf "[ $(ASM_SRC)/bios32_call.asm ]\n"
	$(ASM) $(ASM_FLAGS) $(ASM_SRC)/bios32_call.asm -o $(ASM_OBJ)/bios32_call.o
	@printf "\n"

$(OBJ)/io_ports.o : $(SRC)/io_ports.c
	@printf "[ $(SRC)/io_ports.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/io_ports.c -o $(OBJ)/io_ports.o
	@printf "\n"

$(OBJ)/vga.o : $(SRC)/vga.c
	@printf "[ $(SRC)/vga.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/vga.c -o $(OBJ)/vga.o
	@printf "\n"

$(OBJ)/string.o : $(SRC)/string.c
	@printf "[ $(SRC)/string.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/string.c -o $(OBJ)/string.o
	@printf "\n"

$(OBJ)/console.o : $(SRC)/console.c
	@printf "[ $(SRC)/console.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/console.c -o $(OBJ)/console.o
	@printf "\n"

$(OBJ)/gdt.o : $(SRC)/gdt.c
	@printf "[ $(SRC)/gdt.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/gdt.c -o $(OBJ)/gdt.o
	@printf "\n"

$(OBJ)/idt.o : $(SRC)/idt.c
	@printf "[ $(SRC)/idt.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/idt.c -o $(OBJ)/idt.o
	@printf "\n"

$(OBJ)/isr.o : $(SRC)/isr.c
	@printf "[ $(SRC)/isr.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/isr.c -o $(OBJ)/isr.o
	@printf "\n"

$(OBJ)/8259_pic.o : $(SRC)/8259_pic.c
	@printf "[ $(SRC)/8259_pic.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/8259_pic.c -o $(OBJ)/8259_pic.o
	@printf "\n"

$(OBJ)/keyboard.o : $(SRC)/keyboard.c
	@printf "[ $(SRC)/keyboard.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/keyboard.c -o $(OBJ)/keyboard.o
	@printf "\n"

$(OBJ)/mouse.o : $(SRC)/mouse.c
	@printf "[ $(SRC)/mouse.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/mouse.c -o $(OBJ)/mouse.o
	@printf "\n"

$(OBJ)/kernel.o : $(SRC)/kernel.c
	@printf "[ $(SRC)/kernel.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/kernel.c -o $(OBJ)/kernel.o
	@printf "\n"

$(OBJ)/gui.o : $(SRC)/gui.c
	@printf "[ $(SRC)/gui.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/gui.c -o $(OBJ)/gui.o
	@printf "\n"

$(OBJ)/ext2.o : $(SRC)/ext2.c
	@printf "[ $(SRC)/ext2.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/ext2.c -o $(OBJ)/ext2.o
	@printf "\n"

$(OBJ)/ide.o : $(SRC)/ide.c
	@printf "[ $(SRC)/ide.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/ide.c -o $(OBJ)/ide.o
	@printf "\n"

$(OBJ)/tss.o : $(SRC)/tss.c
	@printf "[ $(SRC)/tss.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/tss.c -o $(OBJ)/tss.o
	@printf "\n"

$(OBJ)/kheap.o : $(SRC)/kheap.c
	@printf "[ $(SRC)/kheap.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/kheap.c -o $(OBJ)/kheap.o
	@printf "\n"

$(OBJ)/pmm.o : $(SRC)/pmm.c
	@printf "[ $(SRC)/pmm.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/pmm.c -o $(OBJ)/pmm.o
	@printf "\n"

$(OBJ)/bios32.o : $(SRC)/bios32.c
	@printf "[ $(SRC)/bios32.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/bios32.c -o $(OBJ)/bios32.o
	@printf "\n"

$(OBJ)/vesa.o : $(SRC)/vesa.c
	@printf "[ $(SRC)/vesa.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/vesa.c -o $(OBJ)/vesa.o
	@printf "\n"

$(OBJ)/bitmap.o : $(SRC)/bitmap.c
	@printf "[ $(SRC)/bitmap.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/bitmap.c -o $(OBJ)/bitmap.o
	@printf "\n"

$(OBJ)/panic.o : $(SRC)/panic.c
	@printf "[ $(SRC)/panic.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/panic.c -o $(OBJ)/panic.o
	@printf "\n"

$(OBJ)/fat32.o : $(SRC)/fat32.c
	@printf "[ $(SRC)/fat32.c ]\n"
	$(CC) $(CC_FLAGS) -c $(SRC)/fat32.c -o $(OBJ)/fat32.o
	@printf "\n"

run:
	$(QEMU) $(QEMU_FLAGS)

clean:
	rm -f $(OBJ)/*.o
	rm -f $(ASM_OBJ)/*