projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 1da177e4 LT |
2 | # |
| 3 | # Makefile for the linux kernel. | |
| 4 | # | |
| 5 | ||
| b67067f1 NP |
6 | ccflags-y := -fno-function-sections -fno-data-sections |
| 7 | ||
| c33df4ea JPS |
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 | |
| 1da177e4 | 14 | obj-$(CONFIG_GENERIC_CALIBRATE_DELAY) += calibrate.o |
| a6359d1e | 15 | |
| a6359d1e | 16 | obj-y += init_task.o |
| 1da177e4 LT |
17 | |
| 18 | mounts-y := do_mounts.o | |
| 1da177e4 LT |
19 | mounts-$(CONFIG_BLK_DEV_RAM) += do_mounts_rd.o |
| 20 | mounts-$(CONFIG_BLK_DEV_INITRD) += do_mounts_initrd.o | |
| 1da177e4 | 21 | |
| 2df8220c MY |
22 | # |
| 23 | # UTS_VERSION | |
| 24 | # | |
| 25 | ||
| 26 | smp-flag-$(CONFIG_SMP) := SMP | |
| 27 | preempt-flag-$(CONFIG_PREEMPT_BUILD) := PREEMPT | |
| 28 | preempt-flag-$(CONFIG_PREEMPT_DYNAMIC) := PREEMPT_DYNAMIC | |
| 29 | preempt-flag-$(CONFIG_PREEMPT_RT) := PREEMPT_RT | |
| 30 | ||
| 31 | build-version = $(or $(KBUILD_BUILD_VERSION), $(build-version-auto)) | |
| 32 | build-timestamp = $(or $(KBUILD_BUILD_TIMESTAMP), $(build-timestamp-auto)) | |
| 33 | ||
| 34 | # Maximum length of UTS_VERSION is 64 chars | |
| 35 | filechk_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 | # | |
| 1da177e4 | 42 | |
| 2df8220c MY |
43 | $(obj)/utsversion-tmp.h: FORCE |
| 44 | $(call filechk,uts_version) | |
| 3eb3c740 | 45 | |
| 2df8220c MY |
46 | clean-files += utsversion-tmp.h |
| 47 | ||
| a55f283e | 48 | $(obj)/version.o: $(obj)/utsversion-tmp.h |
| 2df8220c MY |
49 | CFLAGS_version.o := -include $(obj)/utsversion-tmp.h |
| 50 | ||
| 2df8220c MY |
51 | # |
| 52 | # Build version-timestamp.c with final UTS_VERSION | |
| 53 | # | |
| 54 | ||
| 55 | include/generated/utsversion.h: build-version-auto = $(shell $(srctree)/$(src)/build-version) | |
| 56 | include/generated/utsversion.h: build-timestamp-auto = $(shell LC_ALL=C date) | |
| 57 | include/generated/utsversion.h: FORCE | |
| 58 | $(call filechk,uts_version) | |
| 59 | ||
| 60 | $(obj)/version-timestamp.o: include/generated/utsversion.h | |
| 61 | CFLAGS_version-timestamp.o := -include include/generated/utsversion.h | |
| 42633ed8 | 62 | KASAN_SANITIZE_version-timestamp.o := n |
| 2d7ce49f | 63 | KCSAN_SANITIZE_version-timestamp.o := n |
| ddf56288 | 64 | GCOV_PROFILE_version-timestamp.o := n |