mirror of
https://github.com/torvalds/linux
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091bb549f7
This option is not supported by lld:
ld.lld: error: unknown argument: -p
This has been a no-op in binutils since 2004 (see commit dea514f51da1 in
that tree). Given that the lowest officially supported of binutils for
the kernel is 2.20, which was released in 2009, nobody needs this flag
around so just remove it. Commit 1a381d4a0a ("arm64: remove no-op -p
linker flag") did the same for arm64.
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
203 lines
5.7 KiB
Makefile
203 lines
5.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# linux/arch/arm/boot/compressed/Makefile
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#
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# create a compressed vmlinuz image from the original vmlinux
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#
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OBJS =
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AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
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HEAD = head.o
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OBJS += misc.o decompress.o
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ifeq ($(CONFIG_DEBUG_UNCOMPRESS),y)
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OBJS += debug.o
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endif
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FONTC = $(srctree)/lib/fonts/font_acorn_8x8.c
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# string library code (-Os is enforced to keep it much smaller)
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OBJS += string.o
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CFLAGS_string.o := -Os
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ifeq ($(CONFIG_ARM_VIRT_EXT),y)
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OBJS += hyp-stub.o
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endif
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GCOV_PROFILE := n
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# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
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KCOV_INSTRUMENT := n
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#
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# Architecture dependencies
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#
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ifeq ($(CONFIG_ARCH_ACORN),y)
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OBJS += ll_char_wr.o font.o
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endif
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ifeq ($(CONFIG_ARCH_SA1100),y)
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OBJS += head-sa1100.o
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endif
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ifeq ($(CONFIG_CPU_XSCALE),y)
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OBJS += head-xscale.o
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endif
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ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
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OBJS += head-sharpsl.o
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endif
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ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
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ifeq ($(CONFIG_CPU_CP15),y)
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OBJS += big-endian.o
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else
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# The endian should be set by h/w design.
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endif
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endif
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#
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# We now have a PIC decompressor implementation. Decompressors running
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# from RAM should not define ZTEXTADDR. Decompressors running directly
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# from ROM or Flash must define ZTEXTADDR (preferably via the config)
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# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
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ifeq ($(CONFIG_ZBOOT_ROM),y)
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ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
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ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
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else
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ZTEXTADDR := 0
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ZBSSADDR := ALIGN(8)
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endif
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CPPFLAGS_vmlinux.lds := -DTEXT_START="$(ZTEXTADDR)" -DBSS_START="$(ZBSSADDR)"
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compress-$(CONFIG_KERNEL_GZIP) = gzip
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compress-$(CONFIG_KERNEL_LZO) = lzo
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compress-$(CONFIG_KERNEL_LZMA) = lzma
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compress-$(CONFIG_KERNEL_XZ) = xzkern
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compress-$(CONFIG_KERNEL_LZ4) = lz4
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# Borrowed libfdt files for the ATAG compatibility mode
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libfdt := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c
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libfdt_hdrs := fdt.h libfdt.h libfdt_internal.h
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libfdt_objs := $(addsuffix .o, $(basename $(libfdt)))
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$(addprefix $(obj)/,$(libfdt) $(libfdt_hdrs)): $(obj)/%: $(srctree)/scripts/dtc/libfdt/%
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$(call cmd,shipped)
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$(addprefix $(obj)/,$(libfdt_objs) atags_to_fdt.o): \
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$(addprefix $(obj)/,$(libfdt_hdrs))
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ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
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OBJS += $(libfdt_objs) atags_to_fdt.o
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endif
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targets := vmlinux vmlinux.lds piggy_data piggy.o \
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lib1funcs.o ashldi3.o bswapsdi2.o \
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head.o $(OBJS)
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clean-files += piggy_data lib1funcs.S ashldi3.S bswapsdi2.S \
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$(libfdt) $(libfdt_hdrs) hyp-stub.S
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KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
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KBUILD_CFLAGS += $(DISABLE_ARM_SSP_PER_TASK_PLUGIN)
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ifeq ($(CONFIG_FUNCTION_TRACER),y)
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ORIG_CFLAGS := $(KBUILD_CFLAGS)
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KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
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endif
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# -fstack-protector-strong triggers protection checks in this code,
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# but it is being used too early to link to meaningful stack_chk logic.
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nossp_flags := $(call cc-option, -fno-stack-protector)
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CFLAGS_atags_to_fdt.o := $(nossp_flags)
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CFLAGS_fdt.o := $(nossp_flags)
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CFLAGS_fdt_ro.o := $(nossp_flags)
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CFLAGS_fdt_rw.o := $(nossp_flags)
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CFLAGS_fdt_wip.o := $(nossp_flags)
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ccflags-y := -fpic $(call cc-option,-mno-single-pic-base,) -fno-builtin -I$(obj)
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asflags-y := -DZIMAGE
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# Supply kernel BSS size to the decompressor via a linker symbol.
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KBSS_SZ = $(shell echo $$(($$($(CROSS_COMPILE)nm $(obj)/../../../../vmlinux | \
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sed -n -e 's/^\([^ ]*\) [AB] __bss_start$$/-0x\1/p' \
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-e 's/^\([^ ]*\) [AB] __bss_stop$$/+0x\1/p') )) )
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LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(KBSS_SZ)
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# Supply ZRELADDR to the decompressor via a linker symbol.
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ifneq ($(CONFIG_AUTO_ZRELADDR),y)
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LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
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endif
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ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
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LDFLAGS_vmlinux += --be8
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endif
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# Report unresolved symbol references
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LDFLAGS_vmlinux += --no-undefined
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# Delete all temporary local symbols
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LDFLAGS_vmlinux += -X
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# Next argument is a linker script
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LDFLAGS_vmlinux += -T
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# For __aeabi_uidivmod
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lib1funcs = $(obj)/lib1funcs.o
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$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
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$(call cmd,shipped)
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# For __aeabi_llsl
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ashldi3 = $(obj)/ashldi3.o
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$(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
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$(call cmd,shipped)
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# For __bswapsi2, __bswapdi2
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bswapsdi2 = $(obj)/bswapsdi2.o
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$(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S
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$(call cmd,shipped)
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# We need to prevent any GOTOFF relocs being used with references
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# to symbols in the .bss section since we cannot relocate them
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# independently from the rest at run time. This can be achieved by
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# ensuring that no private .bss symbols exist, as global symbols
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# always have a GOT entry which is what we need.
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# The .data section is already discarded by the linker script so no need
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# to bother about it here.
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check_for_bad_syms = \
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bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
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[ -z "$$bad_syms" ] || \
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( echo "following symbols must have non local/private scope:" >&2; \
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echo "$$bad_syms" >&2; false )
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check_for_multiple_zreladdr = \
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if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
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echo 'multiple zreladdrs: $(ZRELADDR)'; \
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echo 'This needs CONFIG_AUTO_ZRELADDR to be set'; \
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false; \
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fi
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efi-obj-$(CONFIG_EFI_STUB) := $(objtree)/drivers/firmware/efi/libstub/lib.a
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$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.o \
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$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \
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$(bswapsdi2) $(efi-obj-y) FORCE
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@$(check_for_multiple_zreladdr)
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$(call if_changed,ld)
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@$(check_for_bad_syms)
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$(obj)/piggy_data: $(obj)/../Image FORCE
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$(call if_changed,$(compress-y))
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$(obj)/piggy.o: $(obj)/piggy_data
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CFLAGS_font.o := -Dstatic=
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$(obj)/font.c: $(FONTC)
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$(call cmd,shipped)
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AFLAGS_hyp-stub.o := -Wa,-march=armv7-a
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$(obj)/hyp-stub.S: $(srctree)/arch/$(SRCARCH)/kernel/hyp-stub.S
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$(call cmd,shipped)
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