#This checks for any ENV variables and add those.ifeq ($(GIT_VERSION),)GIT_VERSION:=$(shellgitdescribe--always--long--dirty||echo"unknown")exportGIT_VERSIONendififeq ($(CFLAGS),)CFLAGS:=-std=gnu99-O2-Wall-Werror-DGIT_VERSION='"$(GIT_VERSION)"'-I$(selfdir)/powerpc/include$(CFLAGS)exportCFLAGSendif