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| author |   Masahiro Yamada <masahiroy@kernel.org> | 2022-09-25 03:19:14 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2022-10-02 18:04:05 +0900 |
| commit | 3216484550610470013b7ce1c9ed272da0a74589 (patch) | |
| tree | e24e7df02e90b7e798ae5aa67a5e4468142978c8 /arch/ia64 | |
| parent | kbuild: hide error checker logs for V=1 builds (diff) | |
| download | linux-dev-3216484550610470013b7ce1c9ed272da0a74589.tar.xz linux-dev-3216484550610470013b7ce1c9ed272da0a74589.zip | |
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>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/kernel/Makefile | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index 08d4a2ba0652..4a1fcb121dda 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -7,9 +7,9 @@ ifdef CONFIG_DYNAMIC_FTRACE CFLAGS_REMOVE_ftrace.o = -pg endif -extra-y := head.o vmlinux.lds +extra-y := vmlinux.lds -obj-y := entry.o efi.o efi_stub.o gate-data.o fsys.o irq.o irq_ia64.o \ +obj-y := head.o entry.o efi.o efi_stub.o gate-data.o fsys.o irq.o irq_ia64.o \ irq_lsapic.o ivt.o pal.o patch.o process.o ptrace.o sal.o \ salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \ unwind.o mca.o mca_asm.o topology.o dma-mapping.o iosapic.o acpi.o \ |