80 lines
1.6 KiB
Makefile
80 lines
1.6 KiB
Makefile
BUILDDIR =
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ifeq ($(BUILDDIR), )
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$(error BUILDDIR not specified)
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endif
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TOOLCHAIN = x86_64-elf
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TOOLCHAIN_CC = $(TOOLCHAIN)-gcc
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TOOLCHAIN_LD = $(TOOLCHAIN)-ld
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TOOLCHAIN_OBJCOPY = $(TOOLCHAIN)-objcopy
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ifeq ($(shell command -v $(TOOLCHAIN_CC) ; ), )
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TOOLCHAIN_CC := gcc
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endif
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ifeq ($(shell command -v $(TOOLCHAIN_LD) ; ), )
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TOOLCHAIN_LD := ld
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endif
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ifeq ($(shell command -v $(TOOLCHAIN_OBJCOPY) ; ), )
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TOOLCHAIN_OBJCOPY := objcopy
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endif
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CFLAGS = -Os -pipe -Wall -Wextra -Werror
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INTERNAL_CFLAGS = \
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-m32 \
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-march=i386 \
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-std=gnu11 \
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-ffreestanding \
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-fno-stack-protector \
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-fno-pic \
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-fno-pie \
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-fomit-frame-pointer \
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-Wno-address-of-packed-member \
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-mno-80387 \
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-mno-mmx \
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-mno-3dnow \
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-mno-sse \
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-mno-sse2 \
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-MMD \
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-I.
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LDFLAGS =
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INTERNAL_LDFLAGS = \
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-melf_i386 \
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-nostdlib \
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-z max-page-size=0x1000 \
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-static \
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-Tlinker.ld
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.PHONY: all clean builddir
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C_FILES := $(shell find -L ./ -type f -name '*.c' | sort)
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ASM_FILES := $(shell find -L ./ -type f -name '*.asm' | sort)
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OBJ := $(addprefix $(BUILDDIR)/, $(ASM_FILES:.asm=.o) $(C_FILES:.c=.o))
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HEADER_DEPS := $(addprefix $(BUILDDIR)/, $(C_FILES:.c=.d))
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all:
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$(MAKE) builddir
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$(MAKE) $(BUILDDIR)/decompressor.bin
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builddir:
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for i in $(OBJ); do mkdir -p `dirname $$i`; done
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$(BUILDDIR)/decompressor.bin: $(OBJ)
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$(TOOLCHAIN_LD) $(OBJ) $(LDFLAGS) $(INTERNAL_LDFLAGS) -o $(BUILDDIR)/decompressor.elf
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$(TOOLCHAIN_OBJCOPY) -O binary $(BUILDDIR)/decompressor.elf $@
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-include $(HEADER_DEPS)
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$(BUILDDIR)/%.o: %.c
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$(TOOLCHAIN_CC) $(CFLAGS) $(INTERNAL_CFLAGS) -c $< -o $@
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$(BUILDDIR)/%.o: %.asm
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nasm $< -f elf32 -o $@
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clean:
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rm -rf $(BUILDDIR)
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