makefile

# Compiler & linker
ASM           = nasm
LIN           = ld
CC            = gcc

# Directory
SOURCE_FOLDER = src
OUTPUT_FOLDER = bin
ISO_NAME      = OS2024
# ISO_NAME      = os2024
ISO_NAME      = OS2024
# STORAGE_FILE = sample-image
STORAGE_FILE = storage

# Flags
WARNING_CFLAG = -Wall -Wextra -Werror
DEBUG_CFLAG   = -ffreestanding -fshort-wchar -g
STRIP_CFLAG   = -nostdlib -fno-stack-protector -nostartfiles -nodefaultlibs -ffreestanding
CFLAGS        = $(DEBUG_CFLAG) $(WARNING_CFLAG) $(STRIP_CFLAG) -m32 -c -I$(SOURCE_FOLDER)
AFLAGS        = -f elf32 -g -F dwarf
LFLAGS        = -T $(SOURCE_FOLDER)/linker.ld -melf_i386

DISK_NAME      = storage

run: all
	@qemu-system-i386 -m 128M -drive file=$(OUTPUT_FOLDER)/$(STORAGE_FILE).bin,format=raw,if=ide,index=0,media=disk -s -S -cdrom $(OUTPUT_FOLDER)/$(ISO_NAME).iso
all: disk iso insert-shell
build: disk iso insert-shell
clean:
	rm -rf *.o *.iso $(OUTPUT_FOLDER)/kernel

reset_disk:
	rm $(OUTPUT_FOLDER)/$(DISK_NAME).bin
	@make disk

disk:
	@qemu-img create -f raw $(OUTPUT_FOLDER)/$(DISK_NAME).bin 4M

kernel:
	@$(ASM) $(AFLAGS) $(SOURCE_FOLDER)/interrupt/intsetup.s -o $(OUTPUT_FOLDER)/intsetup.o
	@$(ASM) $(AFLAGS) src/kernel-entrypoint.s -o bin/kernel-entrypoint.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/kernel.c -o $(OUTPUT_FOLDER)/kernel.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/gdt.c -o $(OUTPUT_FOLDER)/gdt.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/string.c -o $(OUTPUT_FOLDER)/string.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/framebuffer.c -o $(OUTPUT_FOLDER)/framebuffer.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/portio.c -o $(OUTPUT_FOLDER)/portio.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/interrupt/idt.c -o $(OUTPUT_FOLDER)/idt.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/interrupt/interrupt.c -o $(OUTPUT_FOLDER)/interrupt.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/driver/keyboard.c -o $(OUTPUT_FOLDER)/keyboard.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/file-system/disk.c -o $(OUTPUT_FOLDER)/disk.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/file-system/fat32.c -o $(OUTPUT_FOLDER)/fat32.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/paging.c -o $(OUTPUT_FOLDER)/paging.o
	@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/process.c -o $(OUTPUT_FOLDER)/process.o

	@$(LIN) $(LFLAGS) bin/*.o -o $(OUTPUT_FOLDER)/kernel
	@echo Linking object files and generate elf32...
	@rm -f *.o

iso: kernel
	@mkdir -p $(OUTPUT_FOLDER)/iso/boot/grub
	@cp $(OUTPUT_FOLDER)/kernel     $(OUTPUT_FOLDER)/iso/boot/
	@cp other/grub1                 $(OUTPUT_FOLDER)/iso/boot/grub/
	@cp $(SOURCE_FOLDER)/menu.lst   $(OUTPUT_FOLDER)/iso/boot/grub/
	$(CC) $(CFLAGS) $(SOURCE_FOLDER)/kernel.c -o $(OUTPUT_FOLDER)/kernel.o
	@cd ${OUTPUT_FOLDER} && genisoimage -R -b boot/grub/grub1 -no-emul-boot -boot-load-size 4 -A os -input-charset utf8 -quiet -boot-info-table -o OS2024.iso iso
	@rm -r $(OUTPUT_FOLDER)/iso/ 

inserter:
	@$(CC) -Wno-builtin-declaration-mismatch -g -I$(SOURCE_FOLDER) \
	$(SOURCE_FOLDER)/string.c \
	$(SOURCE_FOLDER)/file-system/fat32.c \
	$(SOURCE_FOLDER)/user/external-inserter.c \
	-o $(OUTPUT_FOLDER)/inserter

user-shell:
	@$(ASM) $(AFLAGS) $(SOURCE_FOLDER)/user/crt0.s -o crt0.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/user-shell.c -o user-shell.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/string.c -o string.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/mkdir.c -o mkdir.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/cd.c -o cd.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/cat.c -o cat.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/ls.c -o ls.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/find.c -o find.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/cp.c -o cp.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/rm.c -o rm.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/mv.c -o mv.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/touch.c -o touch.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/cd.c -o cd.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/mkdir.c -o mkdir.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/syscall.c -o syscall.o
	@$(CC)  $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user/command.c -o command.o
	@$(LIN) -T $(SOURCE_FOLDER)/user/user-linker.ld -melf_i386 --oformat=binary \
		crt0.o user-shell.o string.o syscall.o mkdir.o cd.o cat.o ls.o find.o rm.o mv.o cp.o touch.o command.o -o $(OUTPUT_FOLDER)/shell
	@echo Linking object shell object files and generate flat binary...
	@$(LIN) -T $(SOURCE_FOLDER)/user/user-linker.ld -melf_i386 --oformat=elf32-i386 \
		crt0.o user-shell.o string.o syscall.o mkdir.o cd.o cat.o ls.o find.o rm.o mv.o cp.o touch.o command.o -o $(OUTPUT_FOLDER)/shell_elf
	@echo Linking object shell object files and generate ELF32 for debugging...
	@size --target=binary $(OUTPUT_FOLDER)/shell
	@rm -f *.o

insert-shell: inserter user-shell
	@echo Inserting shell into root directory...
	@cd $(OUTPUT_FOLDER); ./inserter shell 2 $(DISK_NAME).bin