uboot1.1.6顶层makefile详解

clobber: clean
 find $(OBJTREE) -type f ( -name .depend
  -o -name '*.srec' -o -name '*.bin' -o -name u-boot.img )
  -print0
  | xargs -0 rm -f
 rm -f $(OBJS) $(obj)*.bak $(obj)ctags $(obj)etags $(obj)TAGS $(obj)include/version_autogenerated.h
 rm -fr $(obj)*.*~
 rm -f $(obj)u-boot $(obj)u-boot.map $(obj)u-boot.hex $(ALL)
 rm -f $(obj)tools/crc32.c $(obj)tools/environment.c $(obj)tools/env/crc32.c
 rm -f $(obj)tools/inca-swap-bytes $(obj)cpu/mpc824x/bedbug_603e.c
 rm -f $(obj)include/asm/proc $(obj)include/asm/arch $(obj)include/asm
 [ ! -d $(OBJTREE)/nand_spl ] || find $(obj)nand_spl -lname '*' -print | xargs rm -f

ifeq ($(OBJTREE),$(SRCTREE))
mrproper
distclean: clobber unconfig
else
mrproper
distclean: clobber unconfig
 rm -rf $(OBJTREE)/*
endif

backup:
 F=`basename $(TOPDIR)` ; cd .. ;
 gtar --force-local -zcvf `date '+$$F-%Y-%m-%d-%T.tar.gz'` $$F