Makefile

STDLIBS = ./assets/programs/stdlib

FILES = \
  ./build/kernel.asm.o \
  ./build/kernel.o \
  ./build/kernel/init.o \
  ./build/kernel/mainloop.o \
  ./build/graphics/renderer.o \
  ./build/disk/disk.o \
  ./build/disk/streamer.o \
  ./build/fs/pparser.o \
  ./build/fs/file.o \
  ./build/fs/fat/fat16.o \
  ./build/string/string.o \
  ./build/idt/idt.asm.o \
  ./build/idt/idt.o \
  ./build/memory/memory.o \
  ./build/io/io.asm.o \
  ./build/gdt/gdt.o \
  ./build/gdt/gdt.asm.o \
  ./build/task/tss.asm.o \
  ./build/memory/heap/heap.o \
  ./build/memory/heap/kheap.o \
  ./build/memory/paging/paging.o \
  ./build/memory/paging/paging.asm.o \
  ./build/task/process.o \
  ./build/task/task.o \
  ./build/task/task.asm.o \
  ./build/isr80h/isr80h.o \
  ./build/isr80h/io.o \
  ./build/isr80h/heap.o \
  ./build/isr80h/process.o \
  ./build/isr80h/vix_graphics.o \
  ./build/keyboard/keyboard.o \
  ./build/keyboard/ps2_keyboard.o \
  ./build/loader/formats/elfloader.o \
  ./build/loader/formats/elf.o \
  ./build/rtc/rtc.o \
  ./build/panic/panic.o \
  ./build/isr80h/file.o \
  ./build/utils/utils.o \
  ./build/graphics/graphics.o \
  ./build/graphics/vix_kernel.o \
  ./build/fonts/characters_Arial.o \
  ./build/fonts/characters_AtariST8x16SystemFont.o \
  ./build/fonts/characters_Brightly.o \
  ./build/fonts/characters_Cheri.o \
  ./build/fonts/characters_RobotoThin.o \
  ./build/mouse/mouse.o \
  ./build/mouse/ps2_mouse.o \
  ./build/math/fpu_math.o \
  ./build/debug/simple_serial.o \
  ./build/audio/audio.o \
  ./build/audio/sb16.o \
  ./build/terminal/terminal.o

INCLUDES = -I./src
CFLAGS  = -std=gnu99 -Wall -Werror -O0 -g
KFLAGS  = -ffreestanding -fno-builtin -nostdlib -nostartfiles -nodefaultlibs
EXTRAS  = -falign-jumps -falign-functions -falign-labels -falign-loops \
          -fstrength-reduce -fomit-frame-pointer -finline-functions \
          -Wno-unused-function -Wno-unused-label -Wno-cpp -Wno-unused-parameter
FLAGS   = $(CFLAGS) $(KFLAGS) $(EXTRAS) $(INCLUDES)
UNAME_S := $(shell uname -s)

# Create bin and build directories first
.PHONY: prepare_dirs
prepare_dirs:
	mkdir -p ./bin ./build ./mnt/d

all: prepare_dirs fonts ./bin/boot_with_size.bin ./bin/kernel.bin user_programs install

fonts:
	./generateFonts.sh

install: ./bin/os.bin
ifeq ($(UNAME_S),Linux)
	mformat -i ./bin/os.bin@@1M -F
	mcopy -i ./bin/os.bin@@1M -s ./assets/* ::/
	find ./assets/programs -name '*.elf' -exec mcopy -i ./bin/os.bin@@1M {} ::/ \;
else ifeq ($(UNAME_S),Darwin)
	@echo "Mounting FAT16 image on macOS..."
	@# First, try to detach any existing mount to avoid conflicts
	@hdiutil detach ./mnt/d 2>/dev/null || true
	@# Clean up any existing ViOS mounts that might interfere
	@echo "Cleaning up existing ViOS mounts..."
	@for disk in $$(diskutil list | grep "VIOS BOOT" | grep -o "disk[0-9]\+" | sort -u); do \
		echo "Detaching existing ViOS mount $$disk..."; \
		hdiutil detach /dev/$$disk 2>/dev/null || true; \
	done
	@# Mount the image and capture the device identifier
	@echo "Mounting new ViOS image..."
	@DEVICE=$$(hdiutil attach -imagekey diskimage-class=CRawDiskImage ./bin/os.bin -mountpoint ./mnt/d -plist | grep -A1 "dev-entry" | tail -1 | sed 's/.*string>\(.*\)<\/string>.*/\1/'); \
	if [ -z "$$DEVICE" ]; then \
		echo "Failed to mount image. Trying alternative approach..."; \
		hdiutil attach -imagekey diskimage-class=CRawDiskImage -nomount ./bin/os.bin; \
		diskutil list; \
		echo "Please mount the correct partition manually if needed."; \
		exit 1; \
	fi; \
	echo "Mounted device: $$DEVICE"; \
	cp -r ./assets/* ./mnt/d/ || true; \
	find ./assets/programs -name '*.elf' -exec cp {} ./mnt/d/ \; || true; \
	echo "Detaching device: $$DEVICE"; \
	hdiutil detach "$$DEVICE" || hdiutil detach ./mnt/d || true; \
	rmdir ./mnt/d 2>/dev/null || true
else
	@echo "Skipping install (switch to linux or darwin)"
endif

./bin/kernel.elf: prepare_dirs $(FILES)
	i686-elf-gcc $(FLAGS) -T ./src/linker.ld -o ./bin/kernel.elf -ffreestanding -O0 -nostdlib $(FILES)

./bin/kernel.bin: ./bin/kernel.elf
	i686-elf-objcopy -O binary ./bin/kernel.elf ./bin/kernel.bin

./bin/boot.bin: prepare_dirs ./src/boot/boot.asm
	nasm -f bin ./src/boot/boot.asm -o ./bin/boot.bin

# Calculate kernel size and update boot sector
./bin/boot_with_size.bin: ./bin/boot.bin ./bin/kernel.bin
	@echo "Calculating kernel size and updating boot sector..."
	./update_boot.sh

./bin/os.bin: ./bin/boot_with_size.bin ./bin/kernel.bin
	rm -rf ./bin/os.bin
	dd if=./bin/boot_with_size.bin of=./bin/os.bin bs=512 conv=notrunc
	dd if=./bin/kernel.bin >> ./bin/os.bin
	dd if=/dev/zero bs=1048576 count=128 >> ./bin/os.bin

# Generic C and ASM file rules
./build/%.o: ./src/%.c
	mkdir -p $(dir $@)
	i686-elf-gcc $(INCLUDES) $(FLAGS) -std=gnu99 -c $< -o $@

./build/%.asm.o: ./src/%.asm
	mkdir -p $(dir $@)
	nasm -f elf -g $< -o $@

user_programs: user_stdlibs user_other_programs

user_stdlibs:
	@for libdir in $(STDLIBS); do \
		echo "Building standard library $$libdir..."; \
		$(MAKE) -C $$libdir all || exit 1; \
	done

user_other_programs:
	@{ \
		for dir in $(shell find ./assets/programs -mindepth 1 -maxdepth 1 -type d); do \
			skip=0; \
			for stdlib in $(STDLIBS); do \
				if [ "$$dir" = "$$stdlib" ]; then skip=1; fi; \
			done; \
			if [ $$skip -eq 0 ] && [ -f "$$dir/Makefile" ]; then \
				echo "Building user program $$dir..."; \
				$(MAKE) -C $$dir all || exit 1; \
			fi; \
		done; \
	}

user_programs_clean:
	@for dir in ./assets/programs/*/ ; do \
		$(MAKE) -C $$dir clean || true; \
	done

clean: user_programs_clean
	rm -rf ./bin/boot.bin ./bin/boot_with_size.bin ./bin/kernel.bin ./bin/os.bin ./build/kernelfull.o ./build/kernelfull-elf.o $(FILES) ./bin/ ./build/ ./mnt ./src/fonts

# Clean up any mounted disk images (macOS specific)
clean_mounts:
ifeq ($(UNAME_S),Darwin)
	@echo "Cleaning up any mounted disk images..."
	@# Detach any mount at our mount point
	@hdiutil detach ./mnt/d 2>/dev/null || true
	@rmdir ./mnt/d 2>/dev/null || true
	@# Find and detach all ViOS disk images
	@echo "Looking for ViOS disk images to detach..."
	@for disk in $$(diskutil list | grep -E "VIOS BOOT|disk[0-9]+" | grep -o "disk[0-9]\+" | sort -u); do \
		echo "Detaching $$disk..."; \
		hdiutil detach /dev/$$disk 2>/dev/null || true; \
	done
	@echo "Mount cleanup completed."
else
	@echo "clean_mounts is only available on macOS"
endif