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    SubjectRe: [PATCH v2 7/8] kbuild: use obj-y instead extra-y for objects placed at the head
    On Tue, Sep 6, 2022 at 3:13 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
    >
    > 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.
    >
    > Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
    > ---
    >
    > (no changes since v1)
    >




    > @@ -198,12 +198,12 @@ KCOV_INSTRUMENT_paca.o := n
    > CFLAGS_setup_64.o += -fno-stack-protector
    > CFLAGS_paca.o += -fno-stack-protector
    >
    > -extra-$(CONFIG_PPC_FPU) += fpu.o
    > -extra-$(CONFIG_ALTIVEC) += vector.o
    > -extra-$(CONFIG_PPC64) += entry_64.o
    > -extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o
    > +obj-$(CONFIG_PPC_FPU) += fpu.o
    > +obj-$(CONFIG_ALTIVEC) += vector.o
    > +obj-$(CONFIG_PPC64) += entry_64.o
    > +obj-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o
    >
    > -extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init_check
    > +obj-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init_check


    This line should not be changed.

    I fixed it up locally.

    https://lore.kernel.org/lkml/CAK7LNARzFmJjpyUciy1LRvaFo72aZcqRbzY-63ArpeszC+HfmQ@mail.gmail.com/






    --
    Best Regards
    Masahiro Yamada

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