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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 | ||