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 += oldnoconfig silentoldconfig savedefconfig defconfig 72 73# oldnoconfig is an alias of olddefconfig, because people already are dependent 74# on its behavior (sets new symbols to their default value but not 'n') with the 75# counter-intuitive name. 76oldnoconfig: olddefconfig 77 @echo " WARNING: \"oldnoconfig\" target will be removed after Linux 4.19" 78 @echo " Please use \"olddefconfig\" instead, which is an alias." 79 80# We do not expect manual invokcation of "silentoldcofig" (or "syncconfig"). 81silentoldconfig: syncconfig 82 @echo " WARNING: \"silentoldconfig\" has been renamed to \"syncconfig\"" 83 @echo " and is now an internal implementation detail." 84 @echo " What you want is probably \"oldconfig\"." 85 @echo " \"silentoldconfig\" will be removed after Linux 4.19" 86 87savedefconfig: $(obj)/conf 88 $< $(silent) --$@=defconfig $(Kconfig) 89 90defconfig: $(obj)/conf 91ifeq ($(KBUILD_DEFCONFIG),) 92 $< $(silent) --defconfig $(Kconfig) 93else 94ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),) 95 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" 96 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) 97else 98 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'" 99 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG) 100endif 101endif 102 103%_defconfig: $(obj)/conf 104 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig) 105 106configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@) 107 108%.config: $(obj)/conf 109 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture)) 110 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles) 111 +$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig 112 113PHONY += kvmconfig 114kvmconfig: kvm_guest.config 115 @: 116 117PHONY += xenconfig 118xenconfig: xen.config 119 @: 120 121PHONY += tinyconfig 122tinyconfig: 123 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config 124 125# CHECK: -o cache_dir=<path> working? 126PHONY += testconfig 127testconfig: $(obj)/conf 128 $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \ 129 -o cache_dir=$(abspath $(obj)/tests/.cache) \ 130 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no) 131clean-dirs += tests/.cache 132 133# Help text used by make help 134help: 135 @echo ' config - Update current config utilising a line-oriented program' 136 @echo ' nconfig - Update current config utilising a ncurses menu based program' 137 @echo ' menuconfig - Update current config utilising a menu based program' 138 @echo ' xconfig - Update current config utilising a Qt based front-end' 139 @echo ' gconfig - Update current config utilising a GTK+ based front-end' 140 @echo ' oldconfig - Update current config utilising a provided .config as base' 141 @echo ' localmodconfig - Update current config disabling modules not loaded' 142 @echo ' localyesconfig - Update current config converting local mods to core' 143 @echo ' defconfig - New config with default from ARCH supplied defconfig' 144 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)' 145 @echo ' allnoconfig - New config where all options are answered with no' 146 @echo ' allyesconfig - New config where all options are accepted with yes' 147 @echo ' allmodconfig - New config selecting modules when possible' 148 @echo ' alldefconfig - New config with all symbols set to default' 149 @echo ' randconfig - New config with random answer to all options' 150 @echo ' listnewconfig - List new options' 151 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their' 152 @echo ' default value without prompting' 153 @echo ' kvmconfig - Enable additional options for kvm guest kernel support' 154 @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support' 155 @echo ' tinyconfig - Configure the tiniest possible kernel' 156 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)' 157 158# =========================================================================== 159# Shared Makefile for the various kconfig executables: 160# conf: Used for defconfig, oldconfig and related targets 161# object files used by all kconfig flavours 162 163conf-objs := conf.o zconf.tab.o 164 165hostprogs-y := conf 166 167targets += zconf.lex.c 168 169# generated files seem to need this to find local include files 170HOSTCFLAGS_zconf.lex.o := -I$(src) 171HOSTCFLAGS_zconf.tab.o := -I$(src) 172 173# nconf: Used for the nconfig target based on ncurses 174hostprogs-y += nconf 175nconf-objs := nconf.o zconf.tab.o nconf.gui.o 176 177HOSTLDLIBS_nconf = $(shell . $(obj)/.nconf-cfg && echo $$libs) 178HOSTCFLAGS_nconf.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags) 179HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags) 180 181$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/.nconf-cfg 182 183# mconf: Used for the menuconfig target based on lxdialog 184hostprogs-y += mconf 185lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o 186mconf-objs := mconf.o zconf.tab.o $(addprefix lxdialog/, $(lxdialog)) 187 188HOSTLDLIBS_mconf = $(shell . $(obj)/.mconf-cfg && echo $$libs) 189$(foreach f, mconf.o $(lxdialog), \ 190 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/.mconf-cfg && echo $$$$cflags))) 191 192$(obj)/mconf.o: $(obj)/.mconf-cfg 193$(addprefix $(obj)/lxdialog/, $(lxdialog)): $(obj)/.mconf-cfg 194 195# qconf: Used for the xconfig target based on Qt 196hostprogs-y += qconf 197qconf-cxxobjs := qconf.o 198qconf-objs := zconf.tab.o 199 200HOSTLDLIBS_qconf = $(shell . $(obj)/.qconf-cfg && echo $$libs) 201HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/.qconf-cfg && echo $$cflags) 202 203$(obj)/qconf.o: $(obj)/.qconf-cfg $(obj)/qconf.moc 204 205quiet_cmd_moc = MOC $@ 206 cmd_moc = $(shell . $(obj)/.qconf-cfg && echo $$moc) -i $< -o $@ 207 208$(obj)/%.moc: $(src)/%.h $(obj)/.qconf-cfg 209 $(call cmd,moc) 210 211# gconf: Used for the gconfig target based on GTK+ 212hostprogs-y += gconf 213gconf-objs := gconf.o zconf.tab.o 214 215HOSTLDLIBS_gconf = $(shell . $(obj)/.gconf-cfg && echo $$libs) 216HOSTCFLAGS_gconf.o = $(shell . $(obj)/.gconf-cfg && echo $$cflags) 217 218$(obj)/gconf.o: $(obj)/.gconf-cfg 219 220$(obj)/zconf.tab.o: $(obj)/zconf.lex.c 221 222# check if necessary packages are available, and configure build flags 223define filechk_conf_cfg 224 $(CONFIG_SHELL) $< 225endef 226 227$(obj)/.%conf-cfg: $(src)/%conf-cfg.sh FORCE 228 $(call filechk,conf_cfg) 229 230clean-files += .*conf-cfg 231