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71
Makefile
71
Makefile
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# === Config ===
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TARGET := boot/espresso.bin
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ISO := boot/espresso.iso
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CC := i686-elf-gcc
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AS := i686-elf-as
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NASM := nasm
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NASMFLAGS := -f elf32
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CFLAGS := -std=gnu99 -ffreestanding -O2 -Wall -Wextra -msse
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LDFLAGS := -T linker.ld -ffreestanding -O2 -nostdlib
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SRC_DIRS := kernel drivers src lib
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INCLUDE_DIRS := include
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INCLUDES := $(addprefix -I, $(INCLUDE_DIRS))
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ISO_DIR := isodir
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BOOT_DIR := $(ISO_DIR)/boot
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GRUB_DIR := $(BOOT_DIR)/grub
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GRUB_CFG := grub.cfg
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# === File collection ===
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C_SRCS := $(foreach dir, $(SRC_DIRS), $(shell find $(dir) -name '*.c'))
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S_SRCS := boot.s crti.s crtn.s misc_asm.s
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NASM_SRCS := idt.asm isr128.asm gdt.asm isr_stub_table.asm
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CRTI_OBJ := crti.o
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CRTBEGIN_OBJ := $(shell $(CC) $(CFLAGS) -print-file-name=crtbegin.o)
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CRTEND_OBJ := $(shell $(CC) $(CFLAGS) -print-file-name=crtend.o)
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CRTN_OBJ := crtn.o
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OBJS := $(C_SRCS:.c=.o) $(S_SRCS:.s=.o) $(NASM_SRCS:.asm=.o)
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OBJ_LINK_LIST := $(CRTI_OBJ) $(CRTBEGIN_OBJ) $(OBJS) $(CRTEND_OBJ) $(CRTN_OBJ)
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INTERNAL_OBJS := $(CRTI_OBJ) $(OBJS) $(CRTN_OBJ)
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# === Build all targets ===
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build: all iso run clean
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# === Default target ===
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all: $(TARGET)
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# === Linking ===
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$(TARGET): boot.o $(filter-out boot.o, $(OBJ_LINK_LIST))
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@mkdir -p $(dir $@)
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$(CC) $(LDFLAGS) -o $@ $^ -lgcc
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# === Compiling C files ===
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%.o: %.c
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$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@
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# === Assembling S files ===
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%.o: %.s
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$(AS) $< -o $@
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%.o: %.asm
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$(NASM) $(NASMFLAGS) $< -o $@
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# === ISO generation ===
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iso: $(TARGET)
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@grub-file --is-x86-multiboot $(TARGET) && echo "multiboot confirmed" || (echo "not multiboot" && exit 1)
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mkdir -p $(GRUB_DIR)
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cp $(TARGET) $(BOOT_DIR)/
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cp $(GRUB_CFG) $(GRUB_DIR)/
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grub-mkrescue -o $(ISO) $(ISO_DIR)
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# === Run in QEMU ===
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run: iso
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qemu-system-i386 -kernel $(TARGET) -drive file=espresso.img,format=raw,if=ide,readonly=off,rerror=report,werror=report -cpu qemu32,sse2 #-singlestep
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# === Clean all build artifacts ===
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clean:
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rm -f $(INTERNAL_OBJS) $(TARGET) $(ISO)
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rm -rf $(ISO_DIR)
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.PHONY: all clean iso run
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