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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> |
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.. | ||
probes | ||
vdso | ||
asm-offsets.c | ||
atomic.S | ||
cpu-probe.c | ||
entry.S | ||
ftrace.c | ||
head.S | ||
io.c | ||
irq.c | ||
jump_label.c | ||
Makefile | ||
module.c | ||
perf_callchain.c | ||
perf_event.c | ||
perf_regs.c | ||
power.c | ||
process.c | ||
ptrace.c | ||
setup.c | ||
signal.c | ||
smp.c | ||
stacktrace.c | ||
syscall_table.c | ||
syscall.c | ||
time.c | ||
traps.c | ||
vdso.c | ||
vmlinux.lds.S |