1. 根目录:
2. arch
3. powerpc
4. lib
5. Makefile

#
# Makefile for ppc-specific library files..
#

subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror

ccflags-$(CONFIG_PPC64)	:= $(NO_MINIMAL_TOC)

CFLAGS_REMOVE_code-patching.o = -pg
CFLAGS_REMOVE_feature-fixups.o = -pg

obj-y += string.o alloc.o crtsavres.o ppc_ksyms.o code-patching.o \
	 feature-fixups.o

obj-$(CONFIG_PPC32)	+= div64.o copy_32.o

obj64-y	+= copypage_64.o copyuser_64.o usercopy_64.o mem_64.o hweight_64.o \
	   copyuser_power7.o string_64.o copypage_power7.o memcpy_power7.o \
	   memcpy_64.o memcmp_64.o

obj64-$(CONFIG_SMP)	+= locks.o
obj64-$(CONFIG_ALTIVEC)	+= vmx-helper.o

ifeq ($(CONFIG_GENERIC_CSUM),)
obj-y			+= checksum_$(CONFIG_WORD_SIZE).o
obj-$(CONFIG_PPC64)	+= checksum_wrappers_64.o
endif

obj-$(CONFIG_PPC_EMULATE_SSTEP)	+= sstep.o ldstfp.o

obj-$(CONFIG_PPC_LIB_RHEAP) += rheap.o

obj-$(CONFIG_FTR_FIXUP_SELFTEST) += feature-fixups-test.o

obj-$(CONFIG_ALTIVEC)	+= xor_vmx.o
CFLAGS_xor_vmx.o += -maltivec $(call cc-option,-mabi=altivec)

obj-$(CONFIG_PPC64) += $(obj64-y)