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Makefile

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+# === Config ===
+TARGET       := boot/espresso.bin
+ISO          := boot/espresso.iso
+CC           := i686-elf-gcc
+AS           := i686-elf-as
+NASM         := nasm
+QEMU_MKE_IMG := qemu-img create -f raw espresso.img 64M
+NASMFLAGS    := -f elf32
+CFLAGS       := -std=gnu99 -ffreestanding -O2 -Wall -Wextra -msse
+LDFLAGS      := -T linker.ld -ffreestanding -O2 -nostdlib
+SRC_DIRS     := kernel drivers src lib
+INCLUDE_DIRS := include
+INCLUDES     := $(addprefix -I, $(INCLUDE_DIRS))
+ISO_DIR      := isodir
+BOOT_DIR     := $(ISO_DIR)/boot
+GRUB_DIR     := $(BOOT_DIR)/grub
+GRUB_CFG     := grub.cfg
+
+# === File collection ===
+C_SRCS       := $(foreach dir, $(SRC_DIRS), $(shell find $(dir) -name '*.c'))
+S_SRCS       := boot.s crti.s crtn.s misc_asm.s
+NASM_SRCS    := idt.asm isr128.asm gdt.asm isr_stub_table.asm
+CRTI_OBJ     := crti.o
+CRTBEGIN_OBJ := $(shell $(CC) $(CFLAGS) -print-file-name=crtbegin.o)
+CRTEND_OBJ   := $(shell $(CC) $(CFLAGS) -print-file-name=crtend.o)
+CRTN_OBJ     := crtn.o
+OBJS         := $(C_SRCS:.c=.o) $(S_SRCS:.s=.o) $(NASM_SRCS:.asm=.o)
+
+OBJ_LINK_LIST := $(CRTI_OBJ) $(CRTBEGIN_OBJ) $(OBJS) $(CRTEND_OBJ) $(CRTN_OBJ)
+INTERNAL_OBJS := $(CRTI_OBJ) $(OBJS) $(CRTN_OBJ)
+
+# === Build all targets ===
+build: all iso run clean
+
+# === Default target ===
+all: $(TARGET)
+
+# === Linking ===
+$(TARGET): boot.o $(filter-out boot.o, $(OBJ_LINK_LIST))
+	@mkdir -p $(dir $@)
+	$(CC) $(LDFLAGS) -o $@ $^ -lgcc
+
+# === Compiling C files ===
+%.o: %.c
+	$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@
+
+# === Assembling S files ===
+%.o: %.s
+	$(AS) $< -o $@
+	
+%.o: %.asm
+	$(NASM) $(NASMFLAGS) $< -o $@
+
+# === ISO generation ===
+iso: $(TARGET)
+	@grub-file --is-x86-multiboot $(TARGET) && echo "multiboot confirmed" || (echo "not multiboot" && exit 1)
+	mkdir -p $(GRUB_DIR)
+	cp $(TARGET) $(BOOT_DIR)/
+	cp $(GRUB_CFG) $(GRUB_DIR)/
+	grub-mkrescue -o $(ISO) $(ISO_DIR)
+
+# === Run in QEMU ===
+run: iso
+	$(QEMU_MKE_IMG)
+	qemu-system-i386 -kernel $(TARGET) -drive file=espresso.img,format=raw,if=ide,readonly=off,rerror=report,werror=report -cpu qemu32,sse2 #-singlestep
+
+# === Clean all build artifacts ===
+clean:
+	rm -f $(INTERNAL_OBJS) $(TARGET) $(ISO)
+	rm -rf $(ISO_DIR)
+
+.PHONY: all clean iso run
+