2020-09-06 04:35:32 +03:00
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OPT_LEVEL = z
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CFLAGS = -pipe -Wall -Wextra
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INTERNAL_CFLAGS = \
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-O$(OPT_LEVEL) \
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-std=gnu99 \
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-ffreestanding \
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-flto \
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-mno-80387 \
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-mno-mmx \
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-mno-sse \
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-mno-sse2 \
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-I. \
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-Wno-address-of-packed-member
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INTERNAL_LDFLAGS = \
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-static \
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-nostdlib \
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-Tlinker.ld \
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-no-pie
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.PHONY: all clean
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C_FILES := $(shell find ./ -type f -name '*.c' | sort)
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BC := $(C_FILES:.c=.bc)
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all: decompressor.bin
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decompressor.bin: $(BC)
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llvm-link $(BC) -o bundle.bc
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opt --O$(OPT_LEVEL) bundle.bc -o optimised_bundle.bc
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clang --target=i386-elf -O$(OPT_LEVEL) -c optimised_bundle.bc -o optimised_bundle.o
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2020-09-09 17:04:06 +03:00
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ld.lld optimised_bundle.o $(INTERNAL_LDFLAGS) -o decompressor.elf
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2020-09-06 04:35:32 +03:00
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llvm-objcopy -O binary decompressor.elf decompressor.bin
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%.bc: %.c
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clang --target=i386-elf $(CFLAGS) $(INTERNAL_CFLAGS) -c $< -o $@
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clean:
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rm -f decompressor.bin $(BC)
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