$(HIDE)mkdir-p unwind &&cd unwind &&$(CROSS_COMPILE)ar x $(shell$(CC)-print-file-name=libunwind.a)&&$(CROSS_COMPILE)ar r $(SYSROOTDIR)/usr/$(MULTILIB)/libc.a *.o
$(HIDE)mkdir-p unwind &&cd unwind &&$$(CROSS_COMPILE)ar x $$(shell$$(CC)-print-file-name=libunwind.a)&&$$(CROSS_COMPILE)ar r $$(SYSROOTDIR)/usr/$$(MULTILIB)/libc.a *.o