1# SPDX-License-Identifier: GPL-2.0 2# =========================================================================== 3# Kernel configuration targets 4# These targets are used from top-level makefile 5 6ifdef KBUILD_KCONFIG 7Kconfig := $(KBUILD_KCONFIG) 8else 9Kconfig := Kconfig 10endif 11 12ifeq ($(quiet),silent_) 13silent := -s 14endif 15 16# We need this, in case the user has it in its environment 17unexport CONFIG_ 18 19config-prog := conf 20menuconfig-prog := mconf 21nconfig-prog := nconf 22gconfig-prog := gconf 23xconfig-prog := qconf 24 25define config_rule 26PHONY += $(1) 27$(1): $(obj)/$($(1)-prog) 28 $(Q)$$< $(silent) $(Kconfig) 29 30PHONY += build_$(1) 31build_$(1): $(obj)/$($(1)-prog) 32endef 33 34$(foreach c, config menuconfig nconfig gconfig xconfig, $(eval $(call config_rule,$(c)))) 35 36PHONY += localmodconfig localyesconfig 37localyesconfig localmodconfig: $(obj)/conf 38 $(Q)$(PERL) $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config 39 $(Q)if [ -f .config ]; then \ 40 cmp -s .tmp.config .config || \ 41 (mv -f .config .config.old.1; \ 42 mv -f .tmp.config .config; \ 43 $< $(silent) --oldconfig $(Kconfig); \ 44 mv -f .config.old.1 .config.old) \ 45 else \ 46 mv -f .tmp.config .config; \ 47 $< $(silent) --oldconfig $(Kconfig); \ 48 fi 49 $(Q)rm -f .tmp.config 50 51# These targets map 1:1 to the commandline options of 'conf' 52# 53# Note: 54# syncconfig has become an internal implementation detail and is now 55# deprecated for external use 56simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \ 57 alldefconfig randconfig listnewconfig olddefconfig syncconfig \ 58 helpnewconfig yes2modconfig mod2yesconfig 59 60PHONY += $(simple-targets) 61 62$(simple-targets): $(obj)/conf 63 $(Q)$< $(silent) --$@ $(Kconfig) 64 65PHONY += savedefconfig defconfig 66 67savedefconfig: $(obj)/conf 68 $(Q)$< $(silent) --$@=defconfig $(Kconfig) 69 70defconfig: $(obj)/conf 71ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),) 72 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" 73 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) 74else 75 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'" 76 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG) 77endif 78 79%_defconfig: $(obj)/conf 80 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig) 81 82configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@) 83 84%.config: $(obj)/conf 85 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture)) 86 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles) 87 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 88 89PHONY += tinyconfig 90tinyconfig: 91 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config 92 93# CHECK: -o cache_dir=<path> working? 94PHONY += testconfig 95testconfig: $(obj)/conf 96 $(Q)$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \ 97 -o cache_dir=$(abspath $(obj)/tests/.cache) \ 98 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no) 99clean-files += tests/.cache 100 101# Help text used by make help 102help: 103 @echo ' config - Update current config utilising a line-oriented program' 104 @echo ' nconfig - Update current config utilising a ncurses menu based program' 105 @echo ' menuconfig - Update current config utilising a menu based program' 106 @echo ' xconfig - Update current config utilising a Qt based front-end' 107 @echo ' gconfig - Update current config utilising a GTK+ based front-end' 108 @echo ' oldconfig - Update current config utilising a provided .config as base' 109 @echo ' localmodconfig - Update current config disabling modules not loaded' 110 @echo ' except those preserved by LMC_KEEP environment variable' 111 @echo ' localyesconfig - Update current config converting local mods to core' 112 @echo ' except those preserved by LMC_KEEP environment variable' 113 @echo ' defconfig - New config with default from ARCH supplied defconfig' 114 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)' 115 @echo ' allnoconfig - New config where all options are answered with no' 116 @echo ' allyesconfig - New config where all options are accepted with yes' 117 @echo ' allmodconfig - New config selecting modules when possible' 118 @echo ' alldefconfig - New config with all symbols set to default' 119 @echo ' randconfig - New config with random answer to all options' 120 @echo ' yes2modconfig - Change answers from yes to mod if possible' 121 @echo ' mod2yesconfig - Change answers from mod to yes if possible' 122 @echo ' listnewconfig - List new options' 123 @echo ' helpnewconfig - List new options and help text' 124 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their' 125 @echo ' default value without prompting' 126 @echo ' tinyconfig - Configure the tiniest possible kernel' 127 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)' 128 129# =========================================================================== 130# object files used by all kconfig flavours 131common-objs := confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \ 132 symbol.o util.o 133 134$(obj)/lexer.lex.o: $(obj)/parser.tab.h 135HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src) 136HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src) 137 138# conf: Used for defconfig, oldconfig and related targets 139hostprogs += conf 140conf-objs := conf.o $(common-objs) 141 142# nconf: Used for the nconfig target based on ncurses 143hostprogs += nconf 144nconf-objs := nconf.o nconf.gui.o $(common-objs) 145 146HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs) 147HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) 148HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) 149 150$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg 151 152# mconf: Used for the menuconfig target based on lxdialog 153hostprogs += mconf 154lxdialog := $(addprefix lxdialog/, \ 155 checklist.o inputbox.o menubox.o textbox.o util.o yesno.o) 156mconf-objs := mconf.o $(lxdialog) $(common-objs) 157 158HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs) 159$(foreach f, mconf.o $(lxdialog), \ 160 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags))) 161 162$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg 163 164# qconf: Used for the xconfig target based on Qt 165hostprogs += qconf 166qconf-cxxobjs := qconf.o qconf-moc.o 167qconf-objs := images.o $(common-objs) 168 169HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs) 170HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags) 171HOSTCXXFLAGS_qconf-moc.o = $(shell . $(obj)/qconf-cfg && echo $$cflags) 172 173$(obj)/qconf.o: $(obj)/qconf-cfg 174 175quiet_cmd_moc = MOC $@ 176 cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) $< -o $@ 177 178$(obj)/qconf-moc.cc: $(src)/qconf.h $(obj)/qconf-cfg FORCE 179 $(call if_changed,moc) 180 181targets += qconf-moc.cc 182 183# gconf: Used for the gconfig target based on GTK+ 184hostprogs += gconf 185gconf-objs := gconf.o images.o $(common-objs) 186 187HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs) 188HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags) 189 190$(obj)/gconf.o: $(obj)/gconf-cfg 191 192# check if necessary packages are available, and configure build flags 193filechk_conf_cfg = $(CONFIG_SHELL) $< 194 195$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE 196 $(call filechk,conf_cfg) 197 198clean-files += *conf-cfg 199