linux/arch/sh
Masahiro Yamada 3216484550 kbuild: use obj-y instead extra-y for objects placed at the head
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>
2022-10-02 18:04:05 +09:00
..
boards mmc: sh_mmcif: move platform_data header to proper location 2022-04-26 14:05:21 +02:00
boot mmc: sh_mmcif: move platform_data header to proper location 2022-04-26 14:05:21 +02:00
cchips
configs ARM: defconfig: remove irda remnants 2022-07-22 12:33:42 +02:00
drivers PCI: Add defines for normal and subtractive PCI bridges 2022-02-17 15:29:35 -06:00
include provide arch_test_bit_acquire for architectures that define test_bit 2022-08-27 09:49:54 -07:00
kernel kbuild: use obj-y instead extra-y for objects placed at the head 2022-10-02 18:04:05 +09:00
lib
math-emu sh: fix READ/WRITE redefinition warnings 2021-10-27 16:51:32 -04:00
mm sh/mm: enable ARCH_HAS_VM_GET_PAGE_PROT 2022-07-17 17:14:41 -07:00
tools
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig mm/mmap: drop ARCH_HAS_VM_GET_PAGE_PROT 2022-07-17 17:14:41 -07:00
Kconfig.cpu
Kconfig.debug sh: fix kconfig unmet dependency warning for FRAME_POINTER 2021-10-27 16:51:01 -04:00
Makefile kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00