obj-m := sum_bios.o KVERSION := $(shell uname -r) KDIR := /lib/modules/$(KVERSION)/build PWD := $(shell pwd) EXTRA_CFLAGS = $(CFLAGS) -Wno-incompatible-pointer-types EXTRA_LDFLAGS = $(LDFLAGS) default: $(MAKE) -C $(KDIR) M=$(PWD) modules install: $(MAKE) -C $(KDIR) M=$(PWD) modules_install