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