9a95015466
scripts/mkcompile_h runs $(CC) just for getting the version string.
Reuse CONFIG_CC_VERSION_TEXT for optimization.
For GCC, this slightly changes the version string. I do not think it
is a big deal as we do not have the defined format for LINUX_COMPILER.
In fact, the recent commit 4dcc9a8844 ("kbuild: mkcompile_h:
Include $LD version in /proc/version") added the linker version.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
39 lines
1.2 KiB
Makefile
39 lines
1.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the linux kernel.
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#
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ccflags-y := -fno-function-sections -fno-data-sections
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obj-y := main.o version.o mounts.o
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ifneq ($(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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mounts-$(CONFIG_BLK_DEV_MD) += do_mounts_md.o
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# dependencies on generated files need to be listed explicitly
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$(obj)/version.o: include/generated/compile.h
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# compile.h changes depending on hostname, generation number, etc,
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# so we regenerate it always.
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# mkcompile_h will make sure to only update the
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# actual file if its content has changed.
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chk_compile.h = :
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quiet_chk_compile.h = echo ' CHK $@'
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silent_chk_compile.h = :
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include/generated/compile.h: FORCE
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@$($(quiet)chk_compile.h)
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \
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"$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" \
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"$(CONFIG_PREEMPT_RT)" $(CONFIG_CC_VERSION_TEXT) "$(LD)"
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