2020301918-os/kern/Makefrag
2022-10-02 12:54:35 +08:00

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#
# makefile的kernel部分
# 将会导入到根目录的makefile文件
#
OBJDIRS += kern
KERN_ENTRY := 0x30400
# kernel的所有源码文件如果要添加什么新文件就只需要在这里添加即可其余makefile都不需要动
KERN_SRCFEILS:= kern/kernel.asm \
kern/start.c \
kern/cmatrix.c \
kern/kprintf.asm\
lib/terminal.c \
lib/string.c
# 根据KERN_SRCFEILS获取所有需要的可重定位文件
KERN_OBJFILES := $(patsubst %.c, $(OBJDIR)/%.o, $(KERN_SRCFEILS))
KERN_OBJFILES := $(patsubst %.asm, $(OBJDIR)/%.o, $(KERN_OBJFILES))
KERN_OBJFILES := $(patsubst $(OBJDIR)/lib/%, $(OBJDIR)/kern/%, $(KERN_OBJFILES))
# 根据源文件pattern判断编译的方式
$(OBJDIR)/kern/%.o: kern/%.c $(OBJDIR)/.vars.CFLAGS
@echo + cc $<
@mkdir -p $(@D)
@$(CC) $(CFLAGS) -c -o $@ $<
$(OBJDIR)/kern/%.o: lib/%.c $(OBJDIR)/.vars.CFLAGS
@echo + cc $<
@mkdir -p $(@D)
@$(CC) $(CFLAGS) -c -o $@ $<
$(OBJDIR)/kern/%.o: kern/%.asm $(OBJDIR)/.vars.CFLAGS
@echo + as obj $<
@mkdir -p $(@D)
@$(AS) -f elf -o $@ $<
# 将所有可重定位文件链接成kernel.bin
$(OBJDIR)/kern/kernel.bin: $(KERN_OBJFILES)
@echo + ld $@
@$(LD) $(LDFLAGS) -Ttext $(KERN_ENTRY) -o $@ $^