# SPDX-License-Identifier: GPL-2.0# ===========================================================================# Kernel configuration targets# These targets are used from top-level makefile ifdef KBUILD_KCONFIGKconfig := $(KBUILD_KCONFIG)elseKconfig := Kconfigendif ifeq ($(quiet),silent_)silent := -sendif # 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) $(srctree)/$(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 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/$@ $(srctree)/arch/$(SRCARCH)/configs/$@) %.config: $(obj)/conf	$(if $(call configfiles),, $(error No configuration exists for this target on this architecture))	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)	$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig PHONY += tinyconfigtinyconfig:	$(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config # CHECK: -o cache_dir=<path> working?PHONY += testconfigtestconfig: $(obj)/conf	$(Q)$(PYTHON3) -B -m pytest $(srctree)/$(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  '  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  '  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)' # ===========================================================================# object files used by all kconfig flavourscommon-objs	:= confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \		   symbol.o util.o $(obj)/lexer.lex.o: $(obj)/parser.tab.hHOSTCFLAGS_lexer.lex.o	:= -I $(srctree)/$(src)HOSTCFLAGS_parser.tab.o	:= -I $(srctree)/$(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 $(common-objs) HOSTLDLIBS_nconf	= $(shell . $(obj)/nconf-cfg && echo $$libs)HOSTCFLAGS_nconf.o	= $(shell . $(obj)/nconf-cfg && echo $$cflags)HOSTCFLAGS_nconf.gui.o	= $(shell . $(obj)/nconf-cfg && echo $$cflags) $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg # 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) $(common-objs) HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)$(foreach f, mconf.o $(lxdialog), \  $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags))) $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg # qconf: Used for the xconfig target based on Qthostprogs	+= qconfqconf-cxxobjs	:= qconf.o qconf-moc.oqconf-objs	:= images.o $(common-objs) HOSTLDLIBS_qconf	= $(shell . $(obj)/qconf-cfg && echo $$libs)HOSTCXXFLAGS_qconf.o	= $(shell . $(obj)/qconf-cfg && echo $$cflags)HOSTCXXFLAGS_qconf-moc.o = $(shell . $(obj)/qconf-cfg && echo $$cflags) $(obj)/qconf.o: $(obj)/qconf-cfg quiet_cmd_moc = MOC     $@      cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) $< -o $@ $(obj)/qconf-moc.cc: $(src)/qconf.h $(obj)/qconf-cfg FORCE	$(call if_changed,moc) targets += qconf-moc.cc # gconf: Used for the gconfig target based on GTK+hostprogs	+= gconfgconf-objs	:= gconf.o images.o $(common-objs) HOSTLDLIBS_gconf    = $(shell . $(obj)/gconf-cfg && echo $$libs)HOSTCFLAGS_gconf.o  = $(shell . $(obj)/gconf-cfg && echo $$cflags) $(obj)/gconf.o: $(obj)/gconf-cfg # check if necessary packages are available, and configure build flagsfilechk_conf_cfg = $(CONFIG_SHELL) $< $(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE	$(call filechk,conf_cfg) clean-files += *conf-cfg