39 lines
674 B
Makefile
39 lines
674 B
Makefile
ASM=nasm
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AFLAGS=-f bin
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BIN=bin
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CFLAGS=-ffreestanding -fno-pie -m32
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CC=gcc
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LD=ld
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LDFLAGS=-melf_i386 -Ttext 0x1000 --oformat binary
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all: os-image
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os-image: boot_sect.bin kernel.bin
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mkdir -p $(BIN)
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cat $^ > $(BIN)/$@
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# build kernel binary file
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kernel.bin: kernel_entry.o kernel.o
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$(LD) $(LDFLAGS) $^ -o $@
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# build kernel object file
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kernel.o: kernel.c
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$(CC) $(CFLAGS) -c $< -o $@
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# build kernel entry object file
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kernel_entry.o: kernel_entry.asm
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$(ASM) -f elf $< -o $@
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boot_sect.bin: boot_sect.asm
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$(ASM) $< $(AFLAGS) -o $@
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basicos: boot_sect.bin kernel.bin
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mkdir -p $(BIN)
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cat boot_sect.bin kernel.bin > $(BIN)/os-image
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.PHONY: clean
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clean:
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rm -f *.bin *.o
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