xref: /linux/init/Makefile (revision 52338415) 
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-$(CONFIG_BLK_DEV_INITRD)	+= do_mounts_initrd.o
21mounts-$(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     $@'
33silent_chk_compile.h = :
34include/generated/compile.h: FORCE
35	@$($(quiet)chk_compile.h)
36	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@	\
37	"$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)"	\
38	"$(CONFIG_PREEMPT_RT)" "$(CC) $(KBUILD_CFLAGS)"
39