1#
 2# Makefile for the linux kernel.
 3#
 4
 
 
 5obj-y                          := main.o version.o mounts.o
 6ifneq ($(CONFIG_BLK_DEV_INITRD),y)
 7obj-y                          += noinitramfs.o
 8else
 9obj-$(CONFIG_BLK_DEV_INITRD)   += initramfs.o
10endif
11obj-$(CONFIG_GENERIC_CALIBRATE_DELAY) += calibrate.o
12
13ifneq ($(CONFIG_ARCH_INIT_TASK),y)
14obj-y                          += init_task.o
15endif
16
17mounts-y			:= do_mounts.o
18mounts-$(CONFIG_BLK_DEV_RAM)	+= do_mounts_rd.o
19mounts-$(CONFIG_BLK_DEV_INITRD)	+= do_mounts_initrd.o
20mounts-$(CONFIG_BLK_DEV_MD)	+= do_mounts_md.o
21
22# dependencies on generated files need to be listed explicitly
23$(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
30       chk_compile.h = :
31 quiet_chk_compile.h = echo '  CHK     $@'
32silent_chk_compile.h = :
33include/generated/compile.h: FORCE
34	@$($(quiet)chk_compile.h)
35	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \
36	"$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" "$(CC) $(KBUILD_CFLAGS)"

 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#
23# UTS_VERSION
24#
25
26smp-flag-$(CONFIG_SMP)			:= SMP
27preempt-flag-$(CONFIG_PREEMPT_BUILD)	:= PREEMPT
28preempt-flag-$(CONFIG_PREEMPT_DYNAMIC)	:= PREEMPT_DYNAMIC
29preempt-flag-$(CONFIG_PREEMPT_RT)	:= PREEMPT_RT
30
31build-version = $(or $(KBUILD_BUILD_VERSION), $(build-version-auto))
32build-timestamp = $(or $(KBUILD_BUILD_TIMESTAMP), $(build-timestamp-auto))
33
34# Maximum length of UTS_VERSION is 64 chars
35filechk_uts_version = \
36	utsver=$$(echo '$(pound)'"$(build-version)" $(smp-flag-y) $(preempt-flag-y) "$(build-timestamp)" | cut -b -64); \
37	echo '$(pound)'define UTS_VERSION \""$${utsver}"\"
38
39#
40# Build version.c with temporary UTS_VERSION
41#
42
43$(obj)/utsversion-tmp.h: FORCE
44	$(call filechk,uts_version)
45
46clean-files += utsversion-tmp.h
47
48$(obj)/version.o: $(obj)/utsversion-tmp.h
49CFLAGS_version.o := -include $(obj)/utsversion-tmp.h
50
51#
52# Build version-timestamp.c with final UTS_VERSION
53#
54
55include/generated/utsversion.h: build-version-auto = $(shell $(srctree)/$(src)/build-version)
56include/generated/utsversion.h: build-timestamp-auto = $(shell LC_ALL=C date)
57include/generated/utsversion.h: FORCE
58	$(call filechk,uts_version)
59
60$(obj)/version-timestamp.o: include/generated/utsversion.h
61CFLAGS_version-timestamp.o := -include include/generated/utsversion.h
62KASAN_SANITIZE_version-timestamp.o := n
63KCSAN_SANITIZE_version-timestamp.o := n
64GCOV_PROFILE_version-timestamp.o := n