MAJOR=4
MINOR=22
DEVNAME=tty22
     ˆÇÆ„­²ïÂÄ ?÷     # SPDX-License-Identifier: GPL-2.0
# ==========================================================================
# Building
# ==========================================================================

src := $(if $(VPATH),$(VPATH)/)$(obj)

PHONY := __build
__build:

# Init all relevant variables used in kbuild files so
# 1) they have correct type
# 2) they do not inherit any value from the environment
obj-y :=
obj-m :=
lib-y :=
lib-m :=
always-y :=
always-m :=
targets :=
subdir-y :=
subdir-m :=
EXTRA_AFLAGS   :=
EXTRA_CFLAGS   :=
EXTRA_CPPFLAGS :=
EXTRA_LDFLAGS  :=
asflags-y  :=
ccflags-y  :=
cppflags-y :=
ldflags-y  :=

subdir-asflags-y :=
subdir-ccflags-y :=

# Read auto.conf if it exists, otherwise ignore
-include include/config/auto.conf

include $(srctree)/scripts/Kbuild.include
include $(srctree)/scripts/Makefile.compiler
include $(kbuild-file)
include $(srctree)/scripts/Makefile.lib

# Do not include hostprogs rules unless needed.
# $(sort ...) is used here to remove duplicated words and excessive spaces.
hostprogs := $(sort $(hostprogs))
ifneq ($(hostprogs),)
include $(srctree)/scripts/Makefile.host
endif

# Do not include userprogs rules unless needed.
# $(sort ...) is used here to remove duplicated words and excessive spaces.
userprogs := $(sort $(userprogs))
ifneq ($(userprogs),)
include $(srctree)/scripts/Makefile.userprogs
endif

ifndef obj
$(warning kbuild: Makefile.build is included improperly)
endif

ifeq ($(need-modorder),)
ifneq ($(obj-m),)
$(warning $(patsubst %.o,'%.ko',$(obj-m)) will not be built even though obj-m is specified.)
$(warning You cannot use subdir-y/m to visit a module Makefile. Use obj-y/m instead.)
endif
endif

# ===========================================================================

# subdir-builtin and subdir-modorder may contain duplications. Use $(sort ...)
subdir-builtin := $(sort $(filter %/built-in.a, $(real-obj-y)))
subdir-modorder := $(sort $(filter %/modules.order, $(obj-m)))

targets-for-builtin := $(extra-y)

ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)
targets-for-builtin += $(obj)/lib.a
endif

ifdef need-builtin
targets-for-builtin += $(obj)/built-in.a
endif

targets-for-modules := $(foreach x, o mod $(if $(CONFIG_TRIM_UNUSED_KSYMS), usyms), \
				$(patsubst %.o, %.$x, $(filter %.o, $(obj-m))))

ifdef need-modorder
targets-for-modules += $(obj)/modules.order
endif

targets += $(targets-for-builtin) $(targets-for-modules)

# Linus' kernel sanity checking tool
ifeq ($(KBUILD_CHECKSRC),1)
  quiet_cmd_checksrc       = CHECK   $<
        cmd_checksrc       = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
else ifeq ($(KBUILD_CHECKSRC),2)
  quiet_cmd_force_checksrc = CHECK   $<
        cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
endif

ifneq ($(KBUILD_EXTRA_WARN),)
  cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $<
endif

# Compile C sources (.c)
# ---------------------------------------------------------------------------

quiet_cmd_cc_s_c = CC $(quiet_modtag)  $@
      cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS) $(CC_FLAGS_LTO), $(c_flags)) -fverbose-asm -S -o $@ $<

$(obj)/%.s: $(obj)/%.c FORCE
	$(call if_changed_dep,cc_s_c)

quiet_cmd_cpp_i_c = CPP $(quiet_modtag) $@
cmd_cpp_i_c       = $(CPP) $(c_flags) -o $@ $<

$(obj)/%.i: $(obj)/%.c FORCE
	$(call if_changed_dep,cpp_i_c)

genksyms = scripts/genksyms/genksyms		\
	$(if $(1), -T $(2))			\
	$(if $(KBUILD_PRESERVE), -p)		\
	-r $(or $(wildcard $(2:.symtypes=.symref)), /dev/null)

# These mirror gensymtypes_S and co below, keep them in synch.
cmd_gensymtypes_c = $(CPP) -D__GENKSYMS__ $(c_flags) $< | $(genksyms)

quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
      cmd_cc_symtypes_c = $(call cmd_gensymtypes_c,true,$@) >/dev/null

$(obj)/%.symtypes : $(obj)/%.c FORCE
	$(call cmd,cc_symtypes_c)

cmd_cc_symversions_c =                                                          \
    $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes))   > $@;  \
    test -s $@ || rm -f $@

$(obj)/%.symversions : $(obj)/%.c FORCE
	$(call cmd,cc_symversions_c)

# L