85 lines
2.4 KiB
Makefile
85 lines
2.4 KiB
Makefile
# Used to generated .d file that deal with header dependencies
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CPPFLAGS = -MMD
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AS=nasm
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ASFLAGS += -f elf32
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LDFLAGS += -m elf_i386
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CFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-pie -fno-stack-protector -fno-tree-vectorize -D__KERNEL__
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CXXFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-rtti -fno-pie
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DEBUG_FLAGS += -g -Og -DDEBUG -fno-omit-frame-pointer -fno-inline
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LIBGCC = $(shell $(CC) -print-libgcc-file-name $(CFLAGS))
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QEMU_OPT += -hda disk.img
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ARCH?=x86
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SUBDIRS := core drivers tests arch/$(ARCH)
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INCDIRS += $(foreach dir, $(SUBDIRS), -I$(dir))
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CPPFLAGS += $(INCDIRS)
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asmsrc=
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asmobj=$(asmsrc:%.asm=%.o)
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gasmsrc=$(wildcard arch/$(ARCH)/*.S arch/$(ARCH)/boot/*.S)
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gasmobj=$(gasmsrc:%.S=%.o)
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csrc=$(shell find $(SUBDIRS) -type f -name "*.c")# $(wildcard *.c)
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cobj=$(csrc:%.c=%.o)
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deps=$(csrc:%.c=%.d) $(gasmsrc:%.S=%.d)
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kernel kernel.sym &: $(asmobj) $(gasmobj) $(cobj) linker.ld
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$(LD) $(LDFLAGS) $(asmobj) $(gasmobj) $(cobj) -o kernel -T linker.ld $(LIBGCC)
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objcopy --only-keep-debug kernel kernel.sym
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objcopy --strip-debug kernel
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fd.iso: kernel
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mkdir -p isodir/boot/grub
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cp $< isodir/boot/
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@printf "menuentry \"myos\" {\n\tmultiboot /boot/kernel\n}" > isodir/boot/grub/grub.cfg
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grub-mkrescue -o $@ isodir
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userspace: FORCE
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$(MAKE) -C userspace
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FORCE:
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@
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disk.img: disk.sfdisk userspace
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qemu-img create -f raw $@ 32M
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sfdisk $@ < $<
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# Before having filesystem support, just dump the user prog into the first partition
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strip userspace/user -o userspace/user.strip
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$(eval file_size:=$(shell du -b userspace/user.strip|awk '{print $$1}' | xargs printf "%016d" )) \
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sed '1s/^/$(file_size)/' userspace/user.strip | dd of=disk.img seek=2048 bs=512
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# NASM without preprocessing
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%.o:%.asm
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$(AS) $(ASFLAGS) -o $@ $<
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#GNU GAS ASM with C Preprocessing
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%.o: %.S
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$(CC) $(CFLAGS) $(CPPFLAGS) -c "$<" -o "$@"
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test: CFLAGS += -DRUN_TEST
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test: clean kernel disk.img
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qemu-system-x86_64 -kernel kernel -serial stdio -m 32M $(QEMU_OPT)
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run:kernel disk.img
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qemu-system-x86_64 -kernel $< $(QEMU_OPT)
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debug: CFLAGS += $(DEBUG_FLAGS)
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debug: CXXFLAGS += $(DEBUG_FLAGS)
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debug:kernel kernel.sym disk.img
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gdb -q -x debug.gdb
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debug_test: CFLAGS += $(DEBUG_FLAGS) -DRUN_TEST
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debug_test: debug
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clean:
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$(RM) kernel $(asmobj) $(gasmobj) $(cobj) $(deps) fd.iso kernel.sym
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$(RM) -r isodir
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.PHONY:
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userspace
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ifneq ($(MAKECMDGOALS),clean)
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-include $(deps)
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endif
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