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proc/30010/task/30634/root/usr/src/kernels/3.10.0-957.el7.x86_64/arch/arm64/kernel/vdso/_[ Not.Writable ]

File://proc/30010/task/30634/root/usr/src/kernels/3.10.0-957.el7.x86_64/arch/arm64/kernel/vdso/Makefile

#
# Building a vDSO image for AArch64.
#
# Author: Will Deacon <will.deacon@arm.com>
# Heavily based on the vDSO Makefiles for other archs.
#

obj-vdso := gettimeofday.o note.o sigreturn.o

# Build rules
targets := $(obj-vdso) vdso.so vdso.so.dbg
obj-vdso := $(addprefix $(obj)/, $(obj-vdso))

ccflags-y := -shared -fno-common -fno-builtin
ccflags-y += -nostdlib -Wl,-soname=linux-vdso.so.1 \
		$(call cc-ldoption, -Wl$(comma)--hash-style=sysv)

obj-y += vdso.o
extra-y += vdso.lds vdso-offsets.h
CPPFLAGS_vdso.lds += -P -C -U$(ARCH)

# Force dependency (incbin is bad)
$(obj)/vdso.o : $(obj)/vdso.so

# Link rule for the .so file, .lds has to be first
$(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso)
	$(call if_changed,vdsold)

# Strip rule for the .so file
$(obj)/%.so: OBJCOPYFLAGS := -S
$(obj)/%.so: $(obj)/%.so.dbg FORCE
	$(call if_changed,objcopy)

# Generate VDSO offsets using helper script
gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
quiet_cmd_vdsosym = VDSOSYM $@
define cmd_vdsosym
	$(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@ && \
	cp $@ include/generated/
endef

$(obj)/vdso-offsets.h: $(obj)/vdso.so.dbg FORCE
	$(call if_changed,vdsosym)

# Assembly rules for the .S files
$(obj-vdso): %.o: %.S
	$(call if_changed_dep,vdsoas)

# Actual build commands
quiet_cmd_vdsold = VDSOL $@
      cmd_vdsold = $(CC) $(c_flags) -Wl,-T $^ -o $@
quiet_cmd_vdsoas = VDSOA $@
      cmd_vdsoas = $(CC) $(a_flags) -c -o $@ $<

# Install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@
      cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@

vdso.so: $(obj)/vdso.so.dbg
	@mkdir -p $(MODLIB)/vdso
	$(call cmd,vdso_install)

vdso_install: vdso.so

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