1 2.if !defined(ARM_MAX_ARCH) 3. if !empty(MACHINE_ARCH:Mearmv4*) || \ 4 ${MACHINE_ARCH} == "armeb" || \ 5 ${MACHINE_ARCH} == "arm" 6ARM_MAX_ARCH=4 7. elif !empty(MACHINE_ARCH:Mearmv5*) || \ 8 ${MACHINE_ARCH} == "earm" || \ 9 ${MACHINE_ARCH} == "earmhf" || \ 10 ${MACHINE_ARCH} == "earmeb" || \ 11 ${MACHINE_ARCH} == "earmhfeb" 12ARM_MAX_ARCH=5 13. elif !empty(MACHINE_ARCH:Mearmv6*) 14ARM_MAX_ARCH=6 15. elif !empty(MACHINE_ARCH:Mearmv7*) 16ARM_MAX_ARCH=7 17. else 18ARM_MAX_ARCH=8 19. endif 20CPPFLAGS += -D__ARM_MAX_ARCH__=${ARM_MAX_ARCH} 21.endif 22