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3216484550
The objects placed at the head of vmlinux need special treatments: - arch/$(SRCARCH)/Makefile adds them to head-y in order to place them before other archives in the linker command line. - arch/$(SRCARCH)/kernel/Makefile adds them to extra-y instead of obj-y to avoid them going into built-in.a. This commit gets rid of the latter. Create vmlinux.a to collect all the objects that are unconditionally linked to vmlinux. The objects listed in head-y are moved to the head of vmlinux.a by using 'ar m'. With this, arch/$(SRCARCH)/kernel/Makefile can consistently use obj-y for builtin objects. There is no *.o that is directly linked to vmlinux. Drop unneeded code in scripts/clang-tools/gen_compile_commands.py. $(AR) mPi needs 'T' to workaround the llvm-ar bug. The fix was suggested by Nathan Chancellor [1]. [1]: https://lore.kernel.org/llvm/YyjjT5gQ2hGMH0ni@dev-arch.thelio-3990X/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
33 lines
855 B
Makefile
33 lines
855 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the linux kernel.
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#
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extra-y += vmlinux.lds
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obj-$(CONFIG_AMIGA) := head.o
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obj-$(CONFIG_ATARI) := head.o
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obj-$(CONFIG_MAC) := head.o
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obj-$(CONFIG_APOLLO) := head.o
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obj-$(CONFIG_VME) := head.o
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obj-$(CONFIG_HP300) := head.o
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obj-$(CONFIG_Q40) := head.o
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obj-$(CONFIG_SUN3X) := head.o
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obj-$(CONFIG_VIRT) := head.o
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obj-$(CONFIG_SUN3) := sun3-head.o
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obj-y += entry.o irq.o module.o process.o ptrace.o
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obj-y += setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o
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obj-$(CONFIG_MMU_MOTOROLA) += ints.o vectors.o
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obj-$(CONFIG_MMU_SUN3) += ints.o vectors.o
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obj-$(CONFIG_PCI) += pcibios.o
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obj-$(CONFIG_HAS_DMA) += dma.o
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obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
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obj-$(CONFIG_BOOTINFO_PROC) += bootinfo_proc.o
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obj-$(CONFIG_UBOOT) += uboot.o
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obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
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