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https://github.com/isometimes/rpi4-osdev
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20 lines
663 B
Makefile
20 lines
663 B
Makefile
CFILES = $(wildcard *.c lib/*.c kernel/*.c)
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SFILES = $(wildcard boot/*.S lib/*.S kernel/*.S)
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OFILES = $(CFILES:.c=.o) $(SFILES:.S=.o)
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LLVMPATH = /opt/homebrew/opt/llvm/bin
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CLANGFLAGS = -Wall -O2 -ffreestanding -nostdlib -mcpu=cortex-a72+nosimd
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all: clean kernel8.img
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%.o: %.c
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$(LLVMPATH)/clang --target=aarch64-elf $(CLANGFLAGS) -c $< -o $@
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%.o: %.S
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$(LLVMPATH)/clang --target=aarch64-elf $(CLANGFLAGS) -c $< -o $@
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kernel8.img: $(OFILES)
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$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib $(OFILES) -T boot/link.ld -o kernel8.elf
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$(LLVMPATH)/llvm-objcopy -O binary kernel8.elf kernel8.img
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clean:
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/bin/rm kernel8.elf */*.o *.img > /dev/null 2> /dev/null || true
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