95 lines
2.9 KiB
Makefile
95 lines
2.9 KiB
Makefile
# === Config ===
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TARGET := boot/espresso.elf
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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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QEMU_MKE_IMG := qemu-img create -f raw espresso.img 64M
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MKFS_VFAT := sudo mkfs.vfat
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MKFS_FLAGS := -F 32 -S 512
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NASMFLAGS := -f elf32
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WNOFLAGS := -Wno-discarded-qualifiers
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CFLAGS := -std=gnu99 -ffreestanding -O2 -Wall -Wextra -msse $(WNOFLAGS) -nostdlib -nostartfiles -include kincl.h
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LDFLAGS := -T linker.ld -ffreestanding -O2 -nostdlib -nostartfiles
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QEMUFLAGS := -boot d -cdrom $(ISO) -drive file=espresso.img,format=raw,if=ide,readonly=off,rerror=report,werror=report -cpu qemu32,sse4.1
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QEMUFLGS_EXT := -vga std -d int,cpu_reset -D qemu.log -no-reboot #-singlestep
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MOR_QEMUFLGS := -net none -netdev user,id=n0 -device rtl8139,netdev=n0 -serial file:serial.log
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SRC_DIRS := kernel drivers lib
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INCLUDE_DIRS := include
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ARCH_DIR := arch
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X86_ARCH_DIR := $(ARCH_DIR)/x86
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X86_BOOT_DIR := $(X86_ARCH_DIR)/boot
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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 := $(foreach dir, $(ARCH_DIR), $(shell find $(dir) -name '*.s'))
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NASM_SRCS := $(foreach dir, $(ARCH_DIR), $(shell find $(dir) -name '*.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
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# === Build all targets and clean ===
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buildc: all iso run clean
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# === Default target ===
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all: $(TARGET)
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# === Debug build ===
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debug:
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$(MAKE) clean
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$(MAKE) CFLAGS="$(CFLAGS) -D_DEBUG" $(TARGET)
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# === Linking ===
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$(TARGET): ./arch/x86/boot/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) $(ISO_DIR)
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# === Run in QEMU ===
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run: iso
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@if [ ! -f espresso.img ]; then \
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$(QEMU_MKE_IMG); \
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fi
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@echo
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qemu-system-i386 $(QEMUFLAGS) $(QEMUFLGS_EXT) $(MOR_QEMUFLGS)
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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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rm -f espresso.img
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.PHONY: all clean iso run debug build buildc
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