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C_SOURCES = $(wildcard kernel/*.c drivers/*.c lib/*.c)
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HEADERS = $(wildcard kernel/*.h drivers/*.h lib/*.h)
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OBJ = $(C_SOURCES:.c=.o)
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all: os-image
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run: all
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qemu-system-x86_64 os-image
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drun: clean run
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grub: eOS.iso
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qemu-system-x86_64 eOS.iso
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eOS.iso : kernel.bin grub/grub.cfg
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mkdir -p boot/grub
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cp $< boot/eOS.bin
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cp grub/grub.cfg boot/grub/grub.cfg
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grub-mkrescue -o eOS.iso ./
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os-image: bootloader/bootloader.bin kernel.bin
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cat $^ > os-image
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kernel.bin: kernel/kernel_entry.o $(OBJ)
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gcc -o $@ $^ -Wl,--oformat=binary -ffreestanding -nostdlib -shared -Ttext 0x1000 -m32
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%.o : %.c ${HEADERS}
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gcc -fno-pie -m32 -Os -ffreestanding -c $< -o $@
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%.o : %.asm
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nasm $< -f elf -o $@
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%.bin : %.asm
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nasm $< -f bin -o $@
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clean:
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rm -fr *.bin *.dis *.o os-image *.map boot/ *.iso
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rm -fr kernel/*.o bootloader/*.bin drivers/*.o
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