mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-07-04 21:05:23 +02:00

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

1.5 KiB

Raw Blame History

SPDX-License-Identifier: GPL-2.0

Makefile for arch/parisc/kernel

extra-y := vmlinux.lds

obj-y := head.o cache.o pacache.o setup.o pdt.o traps.o time.o irq.o
pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o
ptrace.o hardware.o inventory.o drivers.o alternative.o
signal.o hpmc.o real2.o parisc_ksyms.o unaligned.o
process.o processor.o pdc_cons.o pdc_chassis.o unwind.o
patch.o toc.o toc_asm.o

ifdef CONFIG_FUNCTION_TRACER

Do not profile debug and lowlevel utilities

CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_cache.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_perf.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_unwind.o = $(CC_FLAGS_FTRACE) CFLAGS_REMOVE_patch.o = $(CC_FLAGS_FTRACE) endif

obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_PA11) += pci-dma.o obj-$(CONFIG_PCI) += pci.o obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_64BIT) += sys_parisc32.o signal32.o obj-$(CONFIG_STACKTRACE)+= stacktrace.o obj-$(CONFIG_AUDIT) += audit.o obj64-$(CONFIG_AUDIT) += compat_audit.o

only supported for PCX-W/U in 64-bit mode at the moment

obj-$(CONFIG_64BIT) += perf.o perf_asm.o $(obj64-y) obj-$(CONFIG_GENERIC_ARCH_TOPOLOGY) += topology.o obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o obj-$(CONFIG_JUMP_LABEL) += jump_label.o obj-$(CONFIG_KGDB) += kgdb.o obj-$(CONFIG_KPROBES) += kprobes.o obj-$(CONFIG_KEXEC_CORE) += kexec.o relocate_kernel.o obj-$(CONFIG_KEXEC_FILE) += kexec_file.o

vdso

obj-y += vdso.o obj-$(CONFIG_64BIT) += vdso64/ obj-y += vdso32/

1.5 KiB Raw Blame History