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 9# Added for U-Boot 10# Linux has defconfig files in arch/$(SRCARCH)/configs/, 11# on the other hand, U-Boot does in configs/. 12# Set SRCARCH to .. fake this Makefile. 13SRCARCH := .. 14 15ifdef KBUILD_KCONFIG 16Kconfig := $(KBUILD_KCONFIG) 17else 18Kconfig := Kconfig 19endif 20 21ifeq ($(quiet),silent_) 22silent := -s 23endif 24 25# We need this, in case the user has it in its environment 26unexport CONFIG_ 27 28xconfig: $(obj)/qconf 29 $< $(silent) $(Kconfig) 30 31gconfig: $(obj)/gconf 32 $< $(silent) $(Kconfig) 33 34menuconfig: $(obj)/mconf 35 $< $(silent) $(Kconfig) 36 37config: $(obj)/conf 38 $< $(silent) --oldaskconfig $(Kconfig) 39 40nconfig: $(obj)/nconf 41 $< $(silent) $(Kconfig) 42 43build_menuconfig: $(obj)/mconf 44 45build_nconfig: $(obj)/nconf 46 47build_gconfig: $(obj)/gconf 48 49build_xconfig: $(obj)/qconf 50 51localyesconfig localmodconfig: $(obj)/conf 52 $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config 53 $(Q)if [ -f .config ]; then \ 54 cmp -s .tmp.config .config || \ 55 (mv -f .config .config.old.1; \ 56 mv -f .tmp.config .config; \ 57 $< $(silent) --oldconfig $(Kconfig); \ 58 mv -f .config.old.1 .config.old) \ 59 else \ 60 mv -f .tmp.config .config; \ 61 $< $(silent) --oldconfig $(Kconfig); \ 62 fi 63 $(Q)rm -f .tmp.config 64 65# These targets map 1:1 to the commandline options of 'conf' 66# 67# Note: 68# syncconfig has become an internal implementation detail and is now 69# deprecated for external use 70simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \ 71 alldefconfig randconfig listnewconfig olddefconfig syncconfig 72PHONY += $(simple-targets) 73 74$(simple-targets): $(obj)/conf 75 $< $(silent) --$@ $(Kconfig) 76 77PHONY += oldnoconfig silentoldconfig savedefconfig defconfig 78 79# oldnoconfig is an alias of olddefconfig, because people already are dependent 80# on its behavior (sets new symbols to their default value but not 'n') with the 81# counter-intuitive name. 82oldnoconfig: olddefconfig 83 @echo " WARNING: \"oldnoconfig\" target will be removed after Linux 4.19" 84 @echo " Please use \"olddefconfig\" instead, which is an alias." 85 86# We do not expect manual invokcation of "silentoldcofig" (or "syncconfig"). 87silentoldconfig: syncconfig 88 @echo " WARNING: \"silentoldconfig\" has been renamed to \"syncconfig\"" 89 @echo " and is now an internal implementation detail." 90 @echo " What you want is probably \"oldconfig\"." 91 @echo " \"silentoldconfig\" will be removed after Linux 4.19" 92 93savedefconfig: $(obj)/conf 94 $< $(silent) --$@=defconfig $(Kconfig) 95 96defconfig: $(obj)/conf 97ifeq ($(KBUILD_DEFCONFIG),) 98 $< $(silent) --defconfig $(Kconfig) 99else 100ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),) 101 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" 102 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) 103else 104 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'" 105 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG) 106endif 107endif 108 109%_defconfig: $(obj)/conf 110 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig) 111 112# Added for U-Boot (backward compatibility) 113%_config: %_defconfig 114 @: 115 116configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@) 117 118%.config: $(obj)/conf 119 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture)) 120 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles) 121 +$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig 122 123PHONY += kvmconfig 124kvmconfig: kvm_guest.config 125 @: 126 127PHONY += xenconfig 128xenconfig: xen.config 129 @: 130 131PHONY += tinyconfig 132tinyconfig: 133 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config 134 135# CHECK: -o cache_dir=<path> working? 136PHONY += testconfig 137testconfig: $(obj)/conf 138 $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \ 139 -o cache_dir=$(abspath $(obj)/tests/.cache) \ 140 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no) 141clean-dirs += tests/.cache 142 143# Help text used by make help 144help: 145 @echo ' config - Update current config utilising a line-oriented program' 146 @echo ' nconfig - Update current config utilising a ncurses menu based program' 147 @echo ' menuconfig - Update current config utilising a menu based program' 148 @echo ' xconfig - Update current config utilising a Qt based front-end' 149 @echo ' gconfig - Update current config utilising a GTK+ based front-end' 150 @echo ' oldconfig - Update current config utilising a provided .config as base' 151 @echo ' localmodconfig - Update current config disabling modules not loaded' 152 @echo ' localyesconfig - Update current config converting local mods to core' 153 @echo ' defconfig - New config with default from ARCH supplied defconfig' 154 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)' 155 @echo ' allnoconfig - New config where all options are answered with no' 156 @echo ' allyesconfig - New config where all options are accepted with yes' 157 @echo ' allmodconfig - New config selecting modules when possible' 158 @echo ' alldefconfig - New config with all symbols set to default' 159 @echo ' randconfig - New config with random answer to all options' 160 @echo ' listnewconfig - List new options' 161 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their' 162 @echo ' default value without prompting' 163# @echo ' kvmconfig - Enable additional options for kvm guest kernel support' 164# @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support' 165# @echo ' tinyconfig - Configure the tiniest possible kernel' 166 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)' 167 168# =========================================================================== 169# Shared Makefile for the various kconfig executables: 170# conf: Used for defconfig, oldconfig and related targets 171# object files used by all kconfig flavours 172 173conf-objs := conf.o zconf.tab.o 174 175hostprogs-y := conf 176 177targets += zconf.lex.c 178 179# generated files seem to need this to find local include files 180HOSTCFLAGS_zconf.lex.o := -I$(src) 181HOSTCFLAGS_zconf.tab.o := -I$(src) 182 183# nconf: Used for the nconfig target based on ncurses 184hostprogs-y += nconf 185nconf-objs := nconf.o zconf.tab.o nconf.gui.o 186 187HOSTLDLIBS_nconf = $(shell . $(obj)/.nconf-cfg && echo $$libs) 188HOSTCFLAGS_nconf.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags) 189HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags) 190 191$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/.nconf-cfg 192 193# mconf: Used for the menuconfig target based on lxdialog 194hostprogs-y += mconf 195lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o 196mconf-objs := mconf.o zconf.tab.o $(addprefix lxdialog/, $(lxdialog)) 197 198HOSTLDLIBS_mconf = $(shell . $(obj)/.mconf-cfg && echo $$libs) 199$(foreach f, mconf.o $(lxdialog), \ 200 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/.mconf-cfg && echo $$$$cflags))) 201 202$(obj)/mconf.o: $(obj)/.mconf-cfg 203$(addprefix $(obj)/lxdialog/, $(lxdialog)): $(obj)/.mconf-cfg 204 205# qconf: Used for the xconfig target based on Qt 206hostprogs-y += qconf 207qconf-cxxobjs := qconf.o 208qconf-objs := zconf.tab.o 209 210HOSTLDLIBS_qconf = $(shell . $(obj)/.qconf-cfg && echo $$libs) 211HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/.qconf-cfg && echo $$cflags) 212 213$(obj)/qconf.o: $(obj)/.qconf-cfg $(obj)/qconf.moc 214 215quiet_cmd_moc = MOC $@ 216 cmd_moc = $(shell . $(obj)/.qconf-cfg && echo $$moc) -i $< -o $@ 217 218$(obj)/%.moc: $(src)/%.h $(obj)/.qconf-cfg 219 $(call cmd,moc) 220 221# gconf: Used for the gconfig target based on GTK+ 222hostprogs-y += gconf 223gconf-objs := gconf.o zconf.tab.o 224 225HOSTLDLIBS_gconf = $(shell . $(obj)/.gconf-cfg && echo $$libs) 226HOSTCFLAGS_gconf.o = $(shell . $(obj)/.gconf-cfg && echo $$cflags) 227 228$(obj)/gconf.o: $(obj)/.gconf-cfg 229 230$(obj)/zconf.tab.o: $(obj)/zconf.lex.c 231 232# check if necessary packages are available, and configure build flags 233define filechk_conf_cfg 234 $(CONFIG_SHELL) $< 235endef 236 237$(obj)/.%conf-cfg: $(src)/%conf-cfg.sh FORCE 238 $(call filechk,conf_cfg) 239 240clean-files += .*conf-cfg 241