os/kernel32/makefile at main · reindeer002/os · GitHub

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NASM32 = nasm
GCC32 = i686-elf-gcc -c -m32 -ffreestanding
LD32 = i686-elf-ld -melf_i386 -T ../elf_i386.x -nostdlib -e main -Ttext 0x10200
OBJCOPY32 = i686-elf-objcopy -j .text -j .data -j .rodata -j .bss -S -O binary

OBJECTDIRECTORY = tmp
SOURCEDIRECTORY = src

all: prepare kernel32.bin

prepare:
	mkdir -p $(OBJECTDIRECTORY)

$(OBJECTDIRECTORY)/entrypoint.bin: $(SOURCEDIRECTORY)/entrypoint.s
	$(NASM32) -f bin -o $@ $<

dep:
	@echo === Make Dependency File ===
	make -C $(OBJECTDIRECTORY) -f ../makefile kernel32.elf
	@echo === Dependency Search Complete ===

execute-internal-build: dep
	make -C $(OBJECTDIRECTORY) -f ../makefile kernel32.elf

$(OBJECTDIRECTORY)/kernel32.elf.bin: execute-internal-build
	$(OBJCOPY32) $(OBJECTDIRECTORY)/kernel32.elf $@

kernel32.bin: $(OBJECTDIRECTORY)/entrypoint.bin $(OBJECTDIRECTORY)/kernel32.elf.bin
	cat $^ > $@

clean:
	rm -f *.bin
	rm -f $(OBJECTDIRECTORY)/*.*

CENTRYPOINTOBJECTFILE = main.o
CSOURCEFILES = $(wildcard ../$(SOURCEDIRECTORY)/*.c)
ASSEMBLYSOURCEFILES = $(wildcard ../$(SOURCEDIRECTORY)/*.asm)
COBJECTFILES = $(subst main.o, , $(notdir $(patsubst %.c, %.o, $(CSOURCEFILES))))
ASSEMBLYOBJECTFILES = $(notdir $(patsubst %.asm, %.o, $(ASSEMBLYSOURCEFILES)))

%.o: ../$(SOURCEDIRECTORY)/%.c
	$(GCC32) -c $<

%.o: ../$(SOURCEDIRECTORY)/%.asm
	$(NASM32) -f elf32 $< -o $@

internal-dependency:
	$(GCC32) -MM $(CSOURCEFILES) > dependency.dep

kernel32.elf: $(CENTRYPOINTOBJECTFILE) $(COBJECTFILES) $(ASSEMBLYOBJECTFILES)
	$(LD32) -o $@ $^

ifeq (dependency.dep, $(wildcard dependency.dep))
include dependency.dep
endif