linux - init/Makefile

37 lines · 1.2 KiB

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