1# SPDX-License-Identifier: GPL-2.0 2# =========================================================================== 3# Kernel configuration targets 4# These targets are used from top-level makefile 5 6PHONY += xconfig gconfig menuconfig config localmodconfig localyesconfig \ 7 build_menuconfig build_nconfig build_gconfig build_xconfig 8 9ifdef KBUILD_KCONFIG 10Kconfig := $(KBUILD_KCONFIG) 11else 12Kconfig := Kconfig 13endif 14 15ifndef KBUILD_DEFCONFIG 16KBUILD_DEFCONFIG := defconfig 17endif 18 19ifeq ($(quiet),silent_) 20silent := -s 21endif 22 23# We need this, in case the user has it in its environment 24unexport CONFIG_ 25 26xconfig: $(obj)/qconf 27 $< $(silent) $(Kconfig) 28 29gconfig: $(obj)/gconf 30 $< $(silent) $(Kconfig) 31 32menuconfig: $(obj)/mconf 33 $< $(silent) $(Kconfig) 34 35config: $(obj)/conf 36 $< $(silent) --oldaskconfig $(Kconfig) 37 38nconfig: $(obj)/nconf 39 $< $(silent) $(Kconfig) 40 41build_menuconfig: $(obj)/mconf 42 43build_nconfig: $(obj)/nconf 44 45build_gconfig: $(obj)/gconf 46 47build_xconfig: $(obj)/qconf 48 49localyesconfig localmodconfig: $(obj)/conf 50 $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config 51 $(Q)if [ -f .config ]; then \ 52 cmp -s .tmp.config .config || \ 53 (mv -f .config .config.old.1; \ 54 mv -f .tmp.config .config; \ 55 $< $(silent) --oldconfig $(Kconfig); \ 56 mv -f .config.old.1 .config.old) \ 57 else \ 58 mv -f .tmp.config .config; \ 59 $< $(silent) --oldconfig $(Kconfig); \ 60 fi 61 $(Q)rm -f .tmp.config 62 63# These targets map 1:1 to the commandline options of 'conf' 64# 65# Note: 66# syncconfig has become an internal implementation detail and is now 67# deprecated for external use 68simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \ 69 alldefconfig randconfig listnewconfig olddefconfig syncconfig 70PHONY += $(simple-targets) 71 72$(simple-targets): $(obj)/conf 73 $< $(silent) --$@ $(Kconfig) 74 75PHONY += savedefconfig defconfig 76 77savedefconfig: $(obj)/conf 78 $< $(silent) --$@=defconfig $(Kconfig) 79 80defconfig: $(obj)/conf 81ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),) 82 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" 83 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) 84else 85 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'" 86 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG) 87endif 88 89%_defconfig: $(obj)/conf 90 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig) 91 92configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@) 93 94%.config: $(obj)/conf 95 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture)) 96 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles) 97 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 98 99PHONY += kvmconfig 100kvmconfig: kvm_guest.config 101 @: 102 103PHONY += xenconfig 104xenconfig: xen.config 105 @: 106 107PHONY += tinyconfig 108tinyconfig: 109 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config 110 111# CHECK: -o cache_dir=<path> working? 112PHONY += testconfig 113testconfig: $(obj)/conf 114 $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \ 115 -o cache_dir=$(abspath $(obj)/tests/.cache) \ 116 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no) 117clean-files += tests/.cache 118 119# Help text used by make help 120help: 121 @echo ' config - Update current config utilising a line-oriented program' 122 @echo ' nconfig - Update current config utilising a ncurses menu based program' 123 @echo ' menuconfig - Update current config utilising a menu based program' 124 @echo ' xconfig - Update current config utilising a Qt based front-end' 125 @echo ' gconfig - Update current config utilising a GTK+ based front-end' 126 @echo ' oldconfig - Update current config utilising a provided .config as base' 127 @echo ' localmodconfig - Update current config disabling modules not loaded' 128 @echo ' localyesconfig - Update current config converting local mods to core' 129 @echo ' defconfig - New config with default from ARCH supplied defconfig' 130 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)' 131 @echo ' allnoconfig - New config where all options are answered with no' 132 @echo ' allyesconfig - New config where all options are accepted with yes' 133 @echo ' allmodconfig - New config selecting modules when possible' 134 @echo ' alldefconfig - New config with all symbols set to default' 135 @echo ' randconfig - New config with random answer to all options' 136 @echo ' listnewconfig - List new options' 137 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their' 138 @echo ' default value without prompting' 139 @echo ' kvmconfig - Enable additional options for kvm guest kernel support' 140 @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel' 141 @echo ' support' 142 @echo ' tinyconfig - Configure the tiniest possible kernel' 143 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)' 144 145# =========================================================================== 146# object files used by all kconfig flavours 147common-objs := confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \ 148 symbol.o util.o 149 150$(obj)/lexer.lex.o: $(obj)/parser.tab.h 151HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src) 152HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src) 153 154# conf: Used for defconfig, oldconfig and related targets 155hostprogs-y += conf 156conf-objs := conf.o $(common-objs) 157 158# nconf: Used for the nconfig target based on ncurses 159hostprogs-y += nconf 160nconf-objs := nconf.o nconf.gui.o $(common-objs) 161 162HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs) 163HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) 164HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) 165 166$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg 167 168# mconf: Used for the menuconfig target based on lxdialog 169hostprogs-y += mconf 170lxdialog := $(addprefix lxdialog/, \ 171 checklist.o inputbox.o menubox.o textbox.o util.o yesno.o) 172mconf-objs := mconf.o $(lxdialog) $(common-objs) 173 174HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs) 175$(foreach f, mconf.o $(lxdialog), \ 176 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags))) 177 178$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg 179 180# qconf: Used for the xconfig target based on Qt 181hostprogs-y += qconf 182qconf-cxxobjs := qconf.o 183qconf-objs := images.o $(common-objs) 184 185HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs) 186HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags) 187 188$(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc 189 190quiet_cmd_moc = MOC $@ 191 cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@ 192 193$(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg 194 $(call cmd,moc) 195 196# gconf: Used for the gconfig target based on GTK+ 197hostprogs-y += gconf 198gconf-objs := gconf.o images.o $(common-objs) 199 200HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs) 201HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags) 202 203$(obj)/gconf.o: $(obj)/gconf-cfg 204 205# check if necessary packages are available, and configure build flags 206filechk_conf_cfg = $(CONFIG_SHELL) $< 207 208$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE 209 $(call filechk,conf_cfg) 210 211clean-files += *conf-cfg 212