1 # SPDX-License-Identifier: GPL-2.0 2 # =========================================================================== 3 # Kernel configuration targets 4 # These targets are used from top-level makefile 5 6 ifdef KBUILD_KCONFIG 7 Kconfig := $(KBUILD_KCONFIG) 8 else 9 Kconfig := Kconfig 10 endif 11 12 ifndef KBUILD_DEFCONFIG 13 KBUILD_DEFCONFIG := defconfig 14 endif 15 16 ifeq ($(quiet),silent_) 17 silent := -s 18 endif 19 20 export KCONFIG_DEFCONFIG_LIST := 21 ifndef cross_compiling 22 kernel-release := $(shell uname -r) 23 KCONFIG_DEFCONFIG_LIST += \ 24 /lib/modules/$(kernel-release)/.config \ 25 /etc/kernel-config \ 26 /boot/config-$(kernel-release) 27 endif 28 KCONFIG_DEFCONFIG_LIST += arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) 29 30 # We need this, in case the user has it in its environment 31 unexport CONFIG_ 32 33 config-prog := conf 34 menuconfig-prog := mconf 35 nconfig-prog := nconf 36 gconfig-prog := gconf 37 xconfig-prog := qconf 38 39 define config_rule 40 PHONY += $(1) 41 $(1): $(obj)/$($(1)-prog) 42 $(Q)$$< $(silent) $(Kconfig) 43 44 PHONY += build_$(1) 45 build_$(1): $(obj)/$($(1)-prog) 46 endef 47 48 $(foreach c, config menuconfig nconfig gconfig xconfig, $(eval $(call config_rule,$(c)))) 49 50 PHONY += localmodconfig localyesconfig 51 localyesconfig 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 70 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \ 71 alldefconfig randconfig listnewconfig olddefconfig syncconfig \ 72 helpnewconfig yes2modconfig mod2yesconfig 73 74 PHONY += $(simple-targets) 75 76 $(simple-targets): $(obj)/conf 77 $(Q)$< $(silent) --$@ $(Kconfig) 78 79 PHONY += savedefconfig defconfig 80 81 savedefconfig: $(obj)/conf 82 $(Q)$< $(silent) --$@=defconfig $(Kconfig) 83 84 defconfig: $(obj)/conf 85 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),) 86 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" 87 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) 88 else 89 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'" 90 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG) 91 endif 92 93 %_defconfig: $(obj)/conf 94 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig) 95 96 configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@) 97 98 %.config: $(obj)/conf 99 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture)) 100 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles) 101 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 102 103 PHONY += tinyconfig 104 tinyconfig: 105 $(Q)KCONFIG_ALLCONFIG=kernel/configs/tiny-base.config $(MAKE) -f $(srctree)/Makefile allnoconfig 106 $(Q)$(MAKE) -f $(srctree)/Makefile tiny.config 107 108 # CHECK: -o cache_dir=<path> working? 109 PHONY += testconfig 110 testconfig: $(obj)/conf 111 $(Q)$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \ 112 -o cache_dir=$(abspath $(obj)/tests/.cache) \ 113 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no) 114 clean-files += tests/.cache 115 116 # Help text used by make help 117 help: 118 @echo ' config - Update current config utilising a line-oriented program' 119 @echo ' nconfig - Update current config utilising a ncurses menu based program' 120 @echo ' menuconfig - Update current config utilising a menu based program' 121 @echo ' xconfig - Update current config utilising a Qt based front-end' 122 @echo ' gconfig - Update current config utilising a GTK+ based front-end' 123 @echo ' oldconfig - Update current config utilising a provided .config as base' 124 @echo ' localmodconfig - Update current config disabling modules not loaded' 125 @echo ' except those preserved by LMC_KEEP environment variable' 126 @echo ' localyesconfig - Update current config converting local mods to core' 127 @echo ' except those preserved by LMC_KEEP environment variable' 128 @echo ' defconfig - New config with default from ARCH supplied defconfig' 129 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)' 130 @echo ' allnoconfig - New config where all options are answered with no' 131 @echo ' allyesconfig - New config where all options are accepted with yes' 132 @echo ' allmodconfig - New config selecting modules when possible' 133 @echo ' alldefconfig - New config with all symbols set to default' 134 @echo ' randconfig - New config with random answer to all options' 135 @echo ' yes2modconfig - Change answers from yes to mod if possible' 136 @echo ' mod2yesconfig - Change answers from mod to yes if possible' 137 @echo ' listnewconfig - List new options' 138 @echo ' helpnewconfig - List new options and help text' 139 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their' 140 @echo ' default value without prompting' 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 146 common-objs := confdata.o expr.o lexer.lex.o menu.o parser.tab.o \ 147 preprocess.o symbol.o util.o 148 149 $(obj)/lexer.lex.o: $(obj)/parser.tab.h 150 HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src) 151 HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src) 152 153 # conf: Used for defconfig, oldconfig and related targets 154 hostprogs += conf 155 conf-objs := conf.o $(common-objs) 156 157 # nconf: Used for the nconfig target based on ncurses 158 hostprogs += nconf 159 nconf-objs := nconf.o nconf.gui.o $(common-objs) 160 161 HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs) 162 HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) 163 HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) 164 165 $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg 166 167 # mconf: Used for the menuconfig target based on lxdialog 168 hostprogs += mconf 169 lxdialog := $(addprefix lxdialog/, \ 170 checklist.o inputbox.o menubox.o textbox.o util.o yesno.o) 171 mconf-objs := mconf.o $(lxdialog) $(common-objs) 172 173 HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs) 174 $(foreach f, mconf.o $(lxdialog), \ 175 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags))) 176 177 $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg 178 179 # qconf: Used for the xconfig target based on Qt 180 hostprogs += qconf 181 qconf-cxxobjs := qconf.o qconf-moc.o 182 qconf-objs := images.o $(common-objs) 183 184 HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs) 185 HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags) 186 HOSTCXXFLAGS_qconf-moc.o = $(shell . $(obj)/qconf-cfg && echo $$cflags) 187 188 $(obj)/qconf.o: $(obj)/qconf-cfg 189 190 quiet_cmd_moc = MOC $@ 191 cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) $< -o $@ 192 193 $(obj)/qconf-moc.cc: $(src)/qconf.h $(obj)/qconf-cfg FORCE 194 $(call if_changed,moc) 195 196 targets += qconf-moc.cc 197 198 # gconf: Used for the gconfig target based on GTK+ 199 hostprogs += gconf 200 gconf-objs := gconf.o images.o $(common-objs) 201 202 HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs) 203 HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags) 204 205 $(obj)/gconf.o: $(obj)/gconf-cfg 206 207 # check if necessary packages are available, and configure build flags 208 filechk_conf_cfg = $(CONFIG_SHELL) $< 209 210 $(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE 211 $(call filechk,conf_cfg) 212 213 clean-files += *conf-cfg 214