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7f7f6f7ad6
Now Kbuild provides reasonable defaults for objtool, sanitizers, and profilers. Remove redundant variables. Note: This commit changes the coverage for some objects: - include arch/mips/vdso/vdso-image.o into UBSAN, GCOV, KCOV - include arch/sparc/vdso/vdso-image-*.o into UBSAN - include arch/sparc/vdso/vma.o into UBSAN - include arch/x86/entry/vdso/extable.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso-image-*.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso32-setup.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vma.o into GCOV, KCOV - include arch/x86/um/vdso/vma.o into KASAN, GCOV, KCOV I believe these are positive effects because all of them are kernel space objects. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Roberto Sassu <roberto.sassu@huawei.com>
62 lines
1.8 KiB
Makefile
62 lines
1.8 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the linux kernel.
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#
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ccflags-y := -fno-function-sections -fno-data-sections
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obj-y := main.o version.o mounts.o
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ifneq ($(CONFIG_BLK_DEV_INITRD),y)
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obj-y += noinitramfs.o
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else
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obj-$(CONFIG_BLK_DEV_INITRD) += initramfs.o
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endif
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obj-$(CONFIG_GENERIC_CALIBRATE_DELAY) += calibrate.o
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obj-y += init_task.o
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mounts-y := do_mounts.o
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mounts-$(CONFIG_BLK_DEV_RAM) += do_mounts_rd.o
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mounts-$(CONFIG_BLK_DEV_INITRD) += do_mounts_initrd.o
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#
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# UTS_VERSION
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#
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smp-flag-$(CONFIG_SMP) := SMP
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preempt-flag-$(CONFIG_PREEMPT_BUILD) := PREEMPT
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preempt-flag-$(CONFIG_PREEMPT_DYNAMIC) := PREEMPT_DYNAMIC
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preempt-flag-$(CONFIG_PREEMPT_RT) := PREEMPT_RT
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build-version = $(or $(KBUILD_BUILD_VERSION), $(build-version-auto))
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build-timestamp = $(or $(KBUILD_BUILD_TIMESTAMP), $(build-timestamp-auto))
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# Maximum length of UTS_VERSION is 64 chars
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filechk_uts_version = \
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utsver=$$(echo '$(pound)'"$(build-version)" $(smp-flag-y) $(preempt-flag-y) "$(build-timestamp)" | cut -b -64); \
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echo '$(pound)'define UTS_VERSION \""$${utsver}"\"
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#
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# Build version.c with temporary UTS_VERSION
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#
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$(obj)/utsversion-tmp.h: FORCE
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$(call filechk,uts_version)
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clean-files += utsversion-tmp.h
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$(obj)/version.o: $(obj)/utsversion-tmp.h
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CFLAGS_version.o := -include $(obj)/utsversion-tmp.h
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#
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# Build version-timestamp.c with final UTS_VERSION
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#
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include/generated/utsversion.h: build-version-auto = $(shell $(src)/build-version)
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include/generated/utsversion.h: build-timestamp-auto = $(shell LC_ALL=C date)
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include/generated/utsversion.h: FORCE
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$(call filechk,uts_version)
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$(obj)/version-timestamp.o: include/generated/utsversion.h
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CFLAGS_version-timestamp.o := -include include/generated/utsversion.h
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