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Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001# SPDX-License-Identifier: GPL-2.0
Linus Torvalds1da177e2005-04-16 15:20:36 -07002#
3# Makefile for the linux kernel.
4#
5
Nicholas Pigginb67067f2016-08-24 22:29:20 +10006ccflags-y := -fno-function-sections -fno-data-sections
7
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -08008obj-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
Linus Torvalds1da177e2005-04-16 15:20:36 -070014obj-$(CONFIG_GENERIC_CALIBRATE_DELAY) += calibrate.o
Thomas Gleixnera6359d12012-05-03 09:03:02 +000015
Thomas Gleixnera6359d12012-05-03 09:03:02 +000016obj-y += init_task.o
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
18mounts-y := do_mounts.o
Linus Torvalds1da177e2005-04-16 15:20:36 -070019mounts-$(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
Linus Torvalds1da177e2005-04-16 15:20:36 -070023# dependencies on generated files need to be listed explicitly
Sam Ravnborg92045952009-10-18 00:36:47 +020024$(obj)/version.o: include/generated/compile.h
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
Roman Zippel3eb3c7402007-01-10 14:45:28 +010026# 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
Sam Ravnborgfab1e312008-02-11 14:26:26 +010031 chk_compile.h = :
Mike Frysingerd75f4c682008-02-08 00:05:52 -050032 quiet_chk_compile.h = echo ' CHK $@'
33silent_chk_compile.h = :
Sam Ravnborg92045952009-10-18 00:36:47 +020034include/generated/compile.h: FORCE
Mike Frysingerd75f4c682008-02-08 00:05:52 -050035 @$($(quiet)chk_compile.h)
Thomas Gleixner4b950bb2019-07-28 20:27:41 +020036 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \
37 "$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" \
38 "$(CONFIG_PREEMPT_RT)" "$(CC) $(KBUILD_CFLAGS)"