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makefile
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# Compiler & linker
ASM = nasm
LIN = ld
CC = gcc
# Directory
SOURCE_FOLDER = src
OUTPUT_FOLDER = bin
ISO_NAME = OS2023
# Flags
WARNING_CFLAG = -Wall -Wextra -Werror
DEBUG_CFLAG = -ffreestanding -fshort-wchar -g
STRIP_CFLAG = -nostdlib -nostdinc -fno-builtin -fno-stack-protector -nostartfiles -nodefaultlibs
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
run: all
@qemu-system-i386 -s -drive file=bin/storage.bin,format=raw,if=ide,index=0,media=disk -cdrom $(OUTPUT_FOLDER)/$(ISO_NAME).iso
all: build
build: iso
clean:
@rm -r $(OUTPUT_FOLDER)/*
kernel:
@$(ASM) $(AFLAGS) $(SOURCE_FOLDER)/kernel_loader.s -o $(OUTPUT_FOLDER)/kernel_loader.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/stdmem.c -o $(OUTPUT_FOLDER)/stdmem.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/portio.c -o $(OUTPUT_FOLDER)/portio.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/framebuffer.c -o $(OUTPUT_FOLDER)/framebuffer.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/gdt.c -o $(OUTPUT_FOLDER)/gdt.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/kernel.c -o $(OUTPUT_FOLDER)/kernel.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/interrupt/idt.c -o $(OUTPUT_FOLDER)/idt.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/interrupt/interrupt.c -o $(OUTPUT_FOLDER)/interrupt.o
@$(ASM) $(AFLAGS) $(SOURCE_FOLDER)/interrupt/intsetup.s -o $(OUTPUT_FOLDER)/intsetup.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/keyboard/keyboard.c -o $(OUTPUT_FOLDER)/keyboard.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/filesystem/fat32.c -o $(OUTPUT_FOLDER)/fat32.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/filesystem/disk.c -o $(OUTPUT_FOLDER)/disk.o
@$(CC) $(CFLAGS) $(SOURCE_FOLDER)/paging/paging.c -o $(OUTPUT_FOLDER)/paging.o
# @$(CC) $(CFLAGS) $(SOURCE_FOLDER)/command/command.c -o $(OUTPUT_FOLDER)/command.o
@$(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 $(OUTPUT_FOLDER)/iso/boot/grub/
genisoimage -R \
-b boot/grub/grub1 \
-no-emul-boot \
-boot-load-size 4 \
-A os \
-input-charset utf8 \
-quiet \
-boot-info-table \
-o bin/$(ISO_NAME).iso \
$(OUTPUT_FOLDER)/iso
@rm -r $(OUTPUT_FOLDER)/iso
DISK_NAME = storage
disk:
@qemu-img create -f raw $(OUTPUT_FOLDER)/$(DISK_NAME).bin 4M
inserter:
@$(CC) -Wno-builtin-declaration-mismatch -g \
$(SOURCE_FOLDER)/stdmem.c $(SOURCE_FOLDER)/filesystem/fat32.c \
$(SOURCE_FOLDER)/inserter/external-inserter.c \
-o $(OUTPUT_FOLDER)/inserter
# how to run : ./inserter <file to insert> <parent cluster index> <storage>
user-shell:
@$(ASM) $(AFLAGS) $(SOURCE_FOLDER)/user-entry.s -o user-entry.o
@$(CC) $(CFLAGS) -fno-pie $(SOURCE_FOLDER)/user-shell.c -o user-shell.o
@$(LIN) -T $(SOURCE_FOLDER)/user-linker.ld -melf_i386 \
user-entry.o user-shell.o -o $(OUTPUT_FOLDER)/shell
@echo Linking object shell object files and generate flat binary...
@$(LIN) -T $(SOURCE_FOLDER)/user-linker.ld -melf_i386 --oformat=elf32-i386\
user-entry.o user-shell.o -o $(OUTPUT_FOLDER)/shell_elf
@echo Linking object shell object files and generate ELF32 for debugging...
@size --target=binary bin/shell
@rm -f *.o
insert-shell: inserter user-shell
@echo Inserting shell into root directory...
@cd $(OUTPUT_FOLDER); ./inserter shell 2 $(DISK_NAME).bin
shell: disk insert-shell run