3216484550
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>
121 lines
3.8 KiB
Makefile
121 lines
3.8 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the linux kernel.
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#
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asflags-y := -ansi
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ccflags-y := -Werror
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# Undefine sparc when processing vmlinux.lds - it is used
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# And teach CPP we are doing $(BITS) builds (for this case)
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CPPFLAGS_vmlinux.lds := -Usparc -m$(BITS)
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extra-y += vmlinux.lds
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ifdef CONFIG_FUNCTION_TRACER
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# Do not profile debug and lowlevel utilities
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CFLAGS_REMOVE_ftrace.o := -pg
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CFLAGS_REMOVE_time_$(BITS).o := -pg
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CFLAGS_REMOVE_perf_event.o := -pg
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CFLAGS_REMOVE_pcr.o := -pg
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endif
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obj-y := head_$(BITS).o
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obj-$(CONFIG_SPARC64) += urtt_fill.o
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obj-$(CONFIG_SPARC32) += entry.o wof.o wuf.o
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obj-$(CONFIG_SPARC32) += etrap_32.o
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obj-$(CONFIG_SPARC32) += rtrap_32.o
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obj-y += traps_$(BITS).o
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# IRQ
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obj-y += irq_$(BITS).o
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obj-$(CONFIG_SPARC32) += sun4m_irq.o sun4d_irq.o
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obj-y += process_$(BITS).o
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obj-y += process.o
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obj-y += signal_$(BITS).o
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obj-y += sigutil_$(BITS).o
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obj-$(CONFIG_SPARC32) += ioport.o
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obj-y += setup_$(BITS).o
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obj-y += idprom.o
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obj-y += sys_sparc_$(BITS).o
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obj-$(CONFIG_SPARC32) += systbls_32.o
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obj-y += time_$(BITS).o
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obj-$(CONFIG_SPARC32) += windows.o
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obj-y += cpu.o
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obj-$(CONFIG_SPARC64) += vdso.o
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obj-$(CONFIG_SPARC32) += devices.o
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obj-y += ptrace_$(BITS).o
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obj-y += unaligned_$(BITS).o
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obj-y += una_asm_$(BITS).o
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obj-y += prom_common.o
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obj-y += prom_$(BITS).o
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obj-y += of_device_common.o
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obj-y += of_device_$(BITS).o
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obj-$(CONFIG_SPARC64) += prom_irqtrans.o
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obj-$(CONFIG_SPARC32) += leon_kernel.o
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obj-$(CONFIG_SPARC32) += leon_pmc.o
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obj-$(CONFIG_SPARC64) += reboot.o
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obj-$(CONFIG_SPARC64) += sysfs.o
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obj-$(CONFIG_SPARC64) += iommu.o iommu-common.o
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obj-$(CONFIG_SPARC64) += central.o
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obj-$(CONFIG_SPARC64) += starfire.o
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obj-$(CONFIG_SPARC64) += power.o
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obj-$(CONFIG_SPARC64) += sbus.o
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obj-$(CONFIG_SPARC64) += ebus.o
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obj-$(CONFIG_SPARC64) += visemul.o
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obj-$(CONFIG_SPARC64) += hvapi.o
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obj-$(CONFIG_SPARC64) += sstate.o
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obj-$(CONFIG_SPARC64) += mdesc.o
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obj-$(CONFIG_SPARC64) += adi_64.o
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obj-$(CONFIG_SPARC64) += pcr.o
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obj-$(CONFIG_SPARC64) += nmi.o
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obj-$(CONFIG_SPARC64_SMP) += cpumap.o
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obj-$(CONFIG_PCIC_PCI) += pcic.o
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obj-$(CONFIG_LEON_PCI) += leon_pci.o
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obj-$(CONFIG_SPARC_GRPCI2)+= leon_pci_grpci2.o
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obj-$(CONFIG_SPARC_GRPCI1)+= leon_pci_grpci1.o
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obj-$(CONFIG_SMP) += trampoline_$(BITS).o smp_$(BITS).o
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obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o leon_smp.o
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obj-$(CONFIG_SPARC64_SMP) += hvtramp.o
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obj-y += auxio_$(BITS).o
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obj-$(CONFIG_SUN_PM) += apc.o pmc.o
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obj-$(CONFIG_MODULES) += module.o
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obj-$(CONFIG_MODULES) += sparc_ksyms.o
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obj-$(CONFIG_SPARC_LED) += led.o
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obj-$(CONFIG_KGDB) += kgdb_$(BITS).o
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obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
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obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
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obj-$(CONFIG_EARLYFB) += btext.o
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obj-$(CONFIG_STACKTRACE) += stacktrace.o
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# sparc64 PCI
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obj-$(CONFIG_SPARC64_PCI) += pci.o pci_common.o psycho_common.o
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obj-$(CONFIG_SPARC64_PCI) += pci_psycho.o pci_sabre.o pci_schizo.o
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obj-$(CONFIG_SPARC64_PCI) += pci_sun4v.o pci_sun4v_asm.o pci_fire.o
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obj-$(CONFIG_SPARC64_PCI_MSI) += pci_msi.o
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obj-$(CONFIG_COMPAT) += sys32.o sys_sparc32.o signal32.o
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obj-$(CONFIG_US3_MC) += chmc.o
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obj-$(CONFIG_KPROBES) += kprobes.o
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obj-$(CONFIG_SUN_LDOMS) += ldc.o vio.o viohs.o ds.o
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obj-$(CONFIG_AUDIT) += audit.o
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audit--$(CONFIG_AUDIT) := compat_audit.o
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obj-$(CONFIG_COMPAT) += $(audit--y)
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pc--$(CONFIG_PERF_EVENTS) := perf_event.o
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obj-$(CONFIG_SPARC64) += $(pc--y)
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obj-$(CONFIG_UPROBES) += uprobes.o
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obj-$(CONFIG_JUMP_LABEL) += jump_label.o
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