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 := $(KBUILD_KCONFIG) 11else 12Kconfig := Kconfig 13endif 14 15ifeq ($(quiet),silent_) 16silent := -s 17endif 18 19# We need this, in case the user has it in its environment 20unexport CONFIG_ 21 22xconfig: $(obj)/qconf 23 $< $(silent) $(Kconfig) 24 25gconfig: $(obj)/gconf 26 $< $(silent) $(Kconfig) 27 28menuconfig: $(obj)/mconf 29 $< $(silent) $(Kconfig) 30 31config: $(obj)/conf 32 $< $(silent) --oldaskconfig $(Kconfig) 33 34nconfig: $(obj)/nconf 35 $< $(silent) $(Kconfig) 36 37build_menuconfig: $(obj)/mconf 38 39build_nconfig: $(obj)/nconf 40 41build_gconfig: $(obj)/gconf 42 43build_xconfig: $(obj)/qconf 44 45localyesconfig localmodconfig: $(obj)/conf 46 $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config 47 $(Q)if [ -f .config ]; then \ 48 cmp -s .tmp.config .config || \ 49 (mv -f .config .config.old.1; \ 50 mv -f .tmp.config .config; \ 51 $< $(silent) --oldconfig $(Kconfig); \ 52 mv -f .config.old.1 .config.old) \ 53 else \ 54 mv -f .tmp.config .config; \ 55 $< $(silent) --oldconfig $(Kconfig); \ 56 fi 57 $(Q)rm -f .tmp.config 58 59# These targets map 1:1 to the commandline options of 'conf' 60# 61# Note: 62# syncconfig has become an internal implementation detail and is now 63# deprecated for external use 64simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \ 65 alldefconfig randconfig listnewconfig olddefconfig syncconfig 66PHONY += $(simple-targets) 67 68$(simple-targets): $(obj)/conf 69 $< $(silent) --$@ $(Kconfig) 70 71PHONY += savedefconfig defconfig 72 73savedefconfig: $(obj)/conf 74 $< $(silent) --$@=defconfig $(Kconfig) 75 76defconfig: $(obj)/conf 77ifeq ($(KBUILD_DEFCONFIG),) 78 $< $(silent) --defconfig $(Kconfig) 79else 80ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),) 81 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" 82 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) 83else 84 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'" 85 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG) 86endif 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)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig 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-dirs += 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 support' 141 @echo ' tinyconfig - Configure the tiniest possible kernel' 142 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)' 143 144# =========================================================================== 145# object files used by all kconfig flavours 146common-objs := confdata.o expr.o symbol.o preprocess.o zconf.lex.o zconf.tab.o 147 148$(obj)/zconf.lex.o: $(obj)/zconf.tab.h 149HOSTCFLAGS_zconf.lex.o := -I$(src) 150HOSTCFLAGS_zconf.tab.o := -I$(src) 151 152# conf: Used for defconfig, oldconfig and related targets 153hostprogs-y += conf 154conf-objs := conf.o $(common-objs) 155 156# nconf: Used for the nconfig target based on ncurses 157hostprogs-y += nconf 158nconf-objs := nconf.o nconf.gui.o $(common-objs) 159 160HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs) 161HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) 162HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) 163 164$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg 165 166# mconf: Used for the menuconfig target based on lxdialog 167hostprogs-y += mconf 168lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o 169mconf-objs := mconf.o $(addprefix lxdialog/, $(lxdialog)) $(common-objs) 170 171HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs) 172$(foreach f, mconf.o $(lxdialog), \ 173 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags))) 174 175$(obj)/mconf.o: $(obj)/mconf-cfg 176$(addprefix $(obj)/lxdialog/, $(lxdialog)): $(obj)/mconf-cfg 177 178# qconf: Used for the xconfig target based on Qt 179hostprogs-y += qconf 180qconf-cxxobjs := qconf.o 181qconf-objs := images.o $(common-objs) 182 183HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs) 184HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags) 185 186$(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc 187 188quiet_cmd_moc = MOC $@ 189 cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@ 190 191$(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg 192 $(call cmd,moc) 193 194# gconf: Used for the gconfig target based on GTK+ 195hostprogs-y += gconf 196gconf-objs := gconf.o images.o $(common-objs) 197 198HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs) 199HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags) 200 201$(obj)/gconf.o: $(obj)/gconf-cfg 202 203# check if necessary packages are available, and configure build flags 204filechk_conf_cfg = $(CONFIG_SHELL) $< 205 206$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE 207 $(call filechk,conf_cfg) 208 209clean-files += conf-cfg 210