# SPDX-License-Identifier: GPL-2.0# ===========================================================================# Kernel configuration targets# These targets are used from top-level makefile ifdef KBUILD_KCONFIGKconfig := $(KBUILD_KCONFIG)elseKconfig := Kconfigendif ifndef KBUILD_DEFCONFIGKBUILD_DEFCONFIG := defconfigendif ifeq ($(quiet),silent_)silent := -sendif export KCONFIG_DEFCONFIG_LIST :=ifndef cross_compilingkernel-release := $(shell uname -r)KCONFIG_DEFCONFIG_LIST += \	/lib/modules/$(kernel-release)/.config \	/etc/kernel-config \	/boot/config-$(kernel-release)endifKCONFIG_DEFCONFIG_LIST += arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) ifneq ($(findstring c, $(KBUILD_EXTRA_WARN)),)export KCONFIG_WARN_UNKNOWN_SYMBOLS=1endif ifneq ($(findstring e, $(KBUILD_EXTRA_WARN)),)export KCONFIG_WERROR=1endif # We need this, in case the user has it in its environmentunexport CONFIG_ config-prog	:= confmenuconfig-prog	:= mconfnconfig-prog	:= nconfgconfig-prog	:= gconfxconfig-prog	:= qconf define config_rulePHONY += $(1)$(1): $(obj)/$($(1)-prog)	$(Q)$$< $(silent) $(Kconfig) PHONY += build_$(1)build_$(1): $(obj)/$($(1)-prog)endef $(foreach c, config menuconfig nconfig gconfig xconfig, $(eval $(call config_rule,$(c)))) PHONY += localmodconfig localyesconfiglocalyesconfig localmodconfig: $(obj)/conf	$(Q)$(PERL) $(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config	$(Q)if [ -f .config ]; then 				\		cmp -s .tmp.config .config ||			\		(mv -f .config .config.old.1;			\		 mv -f .tmp.config .config;			\		 $< $(silent) --oldconfig $(Kconfig);		\		 mv -f .config.old.1 .config.old)		\	else							\		mv -f .tmp.config .config;			\		$< $(silent) --oldconfig $(Kconfig);		\	fi	$(Q)rm -f .tmp.config # These targets map 1:1 to the commandline options of 'conf'## Note:#  syncconfig has become an internal implementation detail and is now#  deprecated for external usesimple-targets := oldconfig allnoconfig allyesconfig allmodconfig \	alldefconfig randconfig listnewconfig olddefconfig syncconfig \	helpnewconfig yes2modconfig mod2yesconfig mod2noconfig PHONY += $(simple-targets) $(simple-targets): $(obj)/conf	$(Q)$< $(silent) --$@ $(Kconfig) PHONY += savedefconfig defconfig savedefconfig: $(obj)/conf	$(Q)$< $(silent) --$@=defconfig $(Kconfig) defconfig: $(obj)/confifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)	@$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"	$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)else	@$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"	$(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)endif %_defconfig: $(obj)/conf	$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig) configfiles = $(wildcard $(srctree)/kernel/configs/$(1) $(srctree)/arch/$(SRCARCH)/configs/$(1))all-config-fragments = $(call configfiles,*.config)config-fragments = $(call configfiles,$@) cmd_merge_fragments = $(srctree)/scripts/kconfig/merge_config.sh -m $(KCONFIG_CONFIG) $(config-fragments) %.config: $(obj)/conf	$(if $(config-fragments),, $(error $@ fragment does not exists on this architecture))	$(call cmd,merge_fragments)	$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig PHONY += tinyconfigtinyconfig:	$(Q)KCONFIG_ALLCONFIG=kernel/configs/tiny-base.config $(MAKE) -f $(srctree)/Makefile allnoconfig	$(Q)$(MAKE) -f $(srctree)/Makefile tiny.config # CHECK: -o cache_dir=<path> working?PHONY += testconfigtestconfig: $(obj)/conf	$(Q)$(PYTHON3) -B -m pytest $(src)/tests \	-o cache_dir=$(abspath $(obj)/tests/.cache) \	$(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)clean-files += tests/.cache # Help text used by make helphelp:	@echo  'Configuration targets:'	@echo  '  config	  - Update current config utilising a line-oriented program'	@echo  '  nconfig         - Update current config utilising a ncurses menu based program'	@echo  '  menuconfig	  - Update current config utilising a menu based program'	@echo  '  xconfig	  - Update current config utilising a Qt based front-end'	@echo  '  gconfig	  - Update current config utilising a GTK+ based front-end'	@echo  '  oldconfig	  - Update current config utilising a provided .config as base'	@echo  '  localmodconfig  - Update current config disabling modules not loaded'	@echo  '                    except those preserved by LMC_KEEP environment variable'	@echo  '  localyesconfig  - Update current config converting local mods to core'	@echo  '                    except those preserved by LMC_KEEP environment variable'	@echo  '  defconfig	  - New config with default from ARCH supplied defconfig'	@echo  '  savedefconfig   - Save current config as ./defconfig (minimal config)'	@echo  '  allnoconfig	  - New config where all options are answered with no'	@echo  '  allyesconfig	  - New config where all options are accepted with yes'	@echo  '  allmodconfig	  - New config selecting modules when possible'	@echo  '  alldefconfig    - New config with all symbols set to default'	@echo  '  randconfig	  - New config with random answer to all options'	@echo  '  yes2modconfig	  - Change answers from yes to mod if possible'	@echo  '  mod2yesconfig	  - Change answers from mod to yes if possible'	@echo  '  mod2noconfig	  - Change answers from mod to no if possible'	@echo  '  listnewconfig   - List new options'	@echo  '  helpnewconfig   - List new options and help text'	@echo  '  olddefconfig	  - Same as oldconfig but sets new symbols to their'	@echo  '                    default value without prompting'	@echo  '  tinyconfig	  - Configure the tiniest possible kernel'	@echo  '  testconfig	  - Run Kconfig unit tests (requires python3 and pytest)'	@echo  ''	@echo  'Configuration topic targets:'	@$(foreach f, $(all-config-fragments), \		if help=$$(grep -m1 '^# Help: ' $(f)); then \			printf '  %-25s - %s\n' '$(notdir $(f))' "$${help#*: }"; \		fi;) # ===========================================================================# object files used by all kconfig flavourscommon-objs	:= confdata.o expr.o lexer.lex.o menu.o parser.tab.o \		   preprocess.o symbol.o util.o $(obj)/lexer.lex.o: $(obj)/parser.tab.hHOSTCFLAGS_lexer.lex.o	:= -I $(src)HOSTCFLAGS_parser.tab.o	:= -I $(src) # conf: Used for defconfig, oldconfig and related targetshostprogs	+= confconf-objs	:= conf.o $(common-objs) # nconf: Used for the nconfig target based on ncurseshostprogs	+= nconfnconf-objs	:= nconf.o nconf.gui.o mnconf-common.o $(common-objs) HOSTLDLIBS_nconf       = $(call read-file, $(obj)/nconf-libs)HOSTCFLAGS_nconf.o     = $(call read-file, $(obj)/nconf-cflags)HOSTCFLAGS_nconf.gui.o = $(call read-file, $(obj)/nconf-cflags) $(obj)/nconf: | $(obj)/nconf-libs$(obj)/nconf.o $(obj)/nconf.gui.o: | $(obj)/nconf-cflags # mconf: Used for the menuconfig target based on lxdialoghostprogs	+= mconflxdialog	:= $(addprefix lxdialog/, \		     checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)mconf-objs	:= mconf.o $(lxdialog) mnconf-common.o $(common-objs) HOSTLDLIBS_mconf = $(call read-file, $(obj)/mconf-libs)$(foreach f, mconf.o $(lxdialog), \  $(eval HOSTCFLAGS_$f = $$(call read-file, $(obj)/mconf-cflags))) $(obj)/mconf: | $(obj)/mconf-libs$(addprefix $(obj)/, mconf.o $(lxdialog)): | $(obj)/mconf-cflags # qconf: Used for the xconfig target based on Qthostprogs	+= qconfqconf-cxxobjs	:= qconf.o qconf-moc.oqconf-objs	:= $(common-objs) HOSTLDLIBS_qconf         = $(call read-file, $(obj)/qconf-libs)HOSTCXXFLAGS_qconf.o     = -std=c++11 -fPIC $(call read-file, $(obj)/qconf-cflags)HOSTCXXFLAGS_qconf-moc.o = -std=c++11 -fPIC $(call read-file, $(obj)/qconf-cflags)$(obj)/qconf: | $(obj)/qconf-libs$(obj)/qconf.o $(obj)/qconf-moc.o: | $(obj)/qconf-cflags quiet_cmd_moc = MOC     $@      cmd_moc = $(call read-file, $(obj)/qconf-bin)/moc $< -o $@ $(obj)/qconf-moc.cc: $(src)/qconf.h FORCE | $(obj)/qconf-bin	$(call if_changed,moc) targets += qconf-moc.cc # gconf: Used for the gconfig target based on GTK+hostprogs	+= gconfgconf-objs	:= gconf.o $(common-objs) HOSTLDLIBS_gconf   = $(call read-file, $(obj)/gconf-libs)HOSTCFLAGS_gconf.o = $(call read-file, $(obj)/gconf-cflags) $(obj)/gconf: | $(obj)/gconf-libs$(obj)/gconf.o: | $(obj)/gconf-cflags # check if necessary packages are available, and configure build flagscmd_conf_cfg = $< $(addprefix $(obj)/$*conf-, cflags libs bin); touch $(obj)/$*conf-bin $(obj)/%conf-cflags $(obj)/%conf-libs $(obj)/%conf-bin: $(src)/%conf-cfg.sh	$(call cmd,conf_cfg) clean-files += *conf-cflags *conf-libs *conf-bin