82 lines
2.1 KiB
Makefile
82 lines
2.1 KiB
Makefile
CC = i386-elf-gcc
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LD = i386-elf-gcc
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OBJCOPY = i386-elf-objcopy
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OBJDUMP = i386-elf-objdump
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READELF = i386-elf-readelf
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BUILD_ID := $(shell dd if=/dev/urandom count=8 bs=1 | od -An -t x8 | sed 's/^ /0x/')
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LIMINE_VERSION := $(shell git describe --exact-match --tags `git log -n1 --pretty='%h'` || git log -n1 --pretty='%h')
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WERROR = -Werror
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CFLAGS = -Os -pipe -Wall -Wextra $(WERROR)
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INTERNAL_CFLAGS = \
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-std=gnu11 \
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-fplan9-extensions \
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-ffreestanding \
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-fno-stack-protector \
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-fno-pic \
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-fno-omit-frame-pointer \
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-Wno-address-of-packed-member \
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-masm=intel \
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-mno-80387 \
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-mno-mmx \
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-mno-3dnow \
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-mno-sse \
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-mno-sse2 \
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-MMD \
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-DBUILD_ID=$(BUILD_ID) \
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-DLIMINE_VERSION='"$(LIMINE_VERSION)"' \
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-I. \
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-I..
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LDFLAGS = -Os
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INTERNAL_LDFLAGS = \
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-lgcc \
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-static-libgcc \
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-nostdlib \
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-no-pie \
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-z max-page-size=0x1000 \
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-static
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.PHONY: all clean
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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 := $(ASM_FILES:.asm=.o) $(C_FILES:.c=.o)
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HEADER_DEPS := $(C_FILES:.c=.d)
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all: limine.sys stage2.bin stage2.bin.gz
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stage2.bin.gz: stage2.bin
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gzip -n -9 < stage2.bin > stage2.bin.gz
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stage2.bin: limine.sys
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dd if=limine.sys bs=$$(( 0x$$($(READELF) -S limine.elf | grep .stage3.text | sed 's/^.*] //' | awk '{print $$3}' | sed 's/^0*//') - 0x8000 )) count=1 of=$@
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limine.map.o: limine_nomap.elf
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./gensyms.sh $(OBJDUMP) limine_nomap.elf limine
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limine.sys: limine.elf
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$(OBJCOPY) -O binary $< $@
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limine_nomap.elf: $(OBJ)
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$(LD) $(OBJ) $(LDFLAGS) $(INTERNAL_LDFLAGS) -Wl,--gc-sections -Tlinker_stage2only.ld -o $@ || \
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( echo "This error means that stage2 was trying to use stage3 symbols before loading stage 3" && \
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false )
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$(LD) $(OBJ) $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_nomap.ld -o $@
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limine.elf: $(OBJ) limine.map.o
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$(LD) $(OBJ) limine.map.o $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker.ld -o $@
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-include $(HEADER_DEPS)
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%.o: %.c
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$(CC) $(CFLAGS) $(INTERNAL_CFLAGS) -c $< -o $@
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%.o: %.asm
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nasm $< -f elf32 -o $@
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clean:
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rm -f limine.elf limine_nomap.elf limine.map.o limine.sys stage2.bin stage2.bin.gz $(OBJ) $(HEADER_DEPS)
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