1# SPDX-License-Identifier: GPL-2.0 2# 3# Makefile for the linux kernel. 4# 5 6ccflags-y := -fno-function-sections -fno-data-sections 7 8obj-y := main.o version.o mounts.o 9ifneq ($(CONFIG_BLK_DEV_INITRD),y) 10obj-y += noinitramfs.o 11else 12obj-$(CONFIG_BLK_DEV_INITRD) += initramfs.o 13endif 14obj-$(CONFIG_GENERIC_CALIBRATE_DELAY) += calibrate.o 15 16obj-y += init_task.o 17 18mounts-y := do_mounts.o 19mounts-$(CONFIG_BLK_DEV_RAM) += do_mounts_rd.o 20mounts-$(CONFIG_BLK_DEV_INITRD) += do_mounts_initrd.o 21 22# dependencies on generated files need to be listed explicitly 23$(obj)/version.o: include/generated/compile.h 24 25# compile.h changes depending on hostname, generation number, etc, 26# so we regenerate it always. 27# mkcompile_h will make sure to only update the 28# actual file if its content has changed. 29 30quiet_cmd_compile.h = CHK $@ 31 cmd_compile.h = \ 32 $(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \ 33 "$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT_BUILD)" \ 34 "$(CONFIG_PREEMPT_DYNAMIC)" "$(CONFIG_PREEMPT_RT)" \ 35 "$(CONFIG_CC_VERSION_TEXT)" "$(LD)" 36 37include/generated/compile.h: FORCE 38 $(call cmd,compile.h) 39