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obj-$(CONFIG_VBOXSF_FS) += vboxsf.o

vboxsf-y := dir.o file.o utils.o vboxsf_wrappers.o super.o
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     ˆÁÄ234¿Æ  ê    # SPDX-License-Identifier: GPL-2.0-only
#
# Makefile for the overlay filesystem.
#

obj-$(CONFIG_OVERLAY_FS) += overlay.o

overlay-objs := super.o namei.o util.o inode.o file.o dir.o readdir.o \
		copy_up.o export.o params.o xattrs.o
  "   ˆl–Ü4ý( ©³( 	Å€fàD¦-ÿÅƒl-¿ÀÇ '    #
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
# Licensed under the GPL
#

# select defconfig based on actual architecture
ifeq ($(SUBARCH),x86)
  ifeq ($(shell uname -m),x86_64)
        KBUILD_DEFCONFIG := x86_64_defconfig
  else
        KBUILD_DEFCONFIG := i386_defconfig
  endif
else
        KBUILD_DEFCONFIG := $(SUBARCH)_defconfig
endif

ARCH_DIR := arch/um
# We require bash because the vmlinux link and loader script cpp use bash
# features.
SHELL := /bin/bash

core-y			+= $(ARCH_DIR)/kernel/		\
			   $(ARCH_DIR)/drivers/		\
			   $(ARCH_DIR)/os-Linux/

MODE_INCLUDE	+= -I$(srctree)/$(ARCH_DIR)/include/shared/skas

HEADER_ARCH 	:= $(SUBARCH)

ifneq ($(filter $(SUBARCH),x86 x86_64 i386),)
	HEADER_ARCH := x86
endif

ifdef CONFIG_64BIT
	KBUILD_CFLAGS += -mcmodel=large
endif

HOST_DIR := arch/$(HEADER_ARCH)

include $(srctree)/$(ARCH_DIR)/Makefile-skas
include $(srctree)/$(HOST_DIR)/Makefile.um

core-y += $(HOST_DIR)/um/

SHARED_HEADERS	:= $(ARCH_DIR)/include/shared
ARCH_INCLUDE	:= -I$(srctree)/$(SHARED_HEADERS)
ARCH_INCLUDE	+= -I$(srctree)/$(HOST_DIR)/um/shared
KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/um

# -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so
# named - it's a common symbol in libpcap, so we get a binary which crashes.
#
# Same things for in6addr_loopback and mktime - found in libc. For these two we
# only get link-time error, luckily.
#
# -Dlongjmp=kernel_longjmp prevents anything from referencing the libpthread.a
# embedded copy of longjmp, same thing for setjmp.
#
# These apply to USER_CFLAGS to.

KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \
	$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap	\
	-Dlongjmp=kernel_longjmp -Dsetjmp=kernel_setjmp \
	-Din6addr_loopback=kernel_in6addr_loopback \
	-Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr

KBUILD_AFLAGS += $(ARCH_INCLUDE)

USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \
		$(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \
		-D_FILE_OFFSET_BITS=64 -idirafter $(srctree)/include \
		-idirafter $(objtree)/include -D__KERNEL__ -D__UM_HOST__

#This will adjust *FLAGS accordingly to the platform.
include $(srctree)/$(ARCH_DIR)/Makefile-os-Linux

KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \
		   -I$(srctree)/$(HOST_DIR)/include/uapi \
		   -I$(objtree)/$(HOST_DIR)/include/generated \
		   -I$(objtree)/$(HOST_DIR)/include/generated/uapi

# -Derrno=kernel_errno - This turns all kernel references to errno into
# kernel_errno to separate them from the libc errno.  This allows -fno-common
# in KBUILD_CFLAGS.  Otherwise, it would cause ld to complain about the two different
# errnos.
# These apply to kernelspace only.
#
# strip leading and trailing whitespace to make the USER_CFLAGS removal of these
# defines more robust

KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
			 -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
KBUILD_CFLAGS += $(KERNEL_DEFINES)

PHONY += linux

all: linux

linux: vmlinux
	@echo '  LINK $@'
	$(Q)ln -f $< $@

define archhelp
  echo '* linux		- Binary kernel image (./linux) - for backward'
  echo '		   compatibility only, this creates a hard link to the'
  echo '		   real kernel binary, the "vmlinux" binary you'
  echo '		   find in the kernel root.