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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 | # SPDX-License-Identifier: GPL-2.0 # =========================================================================== # Kernel configuration targets # These targets are used from top-level makefile ifdef KBUILD_KCONFIG Kconfig := $(KBUILD_KCONFIG) else Kconfig := Kconfig endif ifndef KBUILD_DEFCONFIG KBUILD_DEFCONFIG := defconfig endif ifeq ($(quiet),silent_) silent := -s endif export KCONFIG_DEFCONFIG_LIST := ifndef cross_compiling kernel-release := $(shell uname -r) KCONFIG_DEFCONFIG_LIST += \ /lib/modules/$(kernel-release)/.config \ /etc/kernel-config \ /boot/config-$(kernel-release) endif KCONFIG_DEFCONFIG_LIST += arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) ifneq ($(findstring c, $(KBUILD_EXTRA_WARN)),) export KCONFIG_WARN_UNKNOWN_SYMBOLS=1 endif ifneq ($(findstring e, $(KBUILD_EXTRA_WARN)),) export KCONFIG_WERROR=1 endif # We need this, in case the user has it in its environment unexport CONFIG_ config-prog := conf menuconfig-prog := mconf nconfig-prog := nconf gconfig-prog := gconf xconfig-prog := qconf define config_rule PHONY += $(1) $(1): $(obj)/$($(1)-prog) $(Q)$$< $(silent) $(Kconfig) PHONY += build_$(1) build_$(1): $(obj)/$($(1)-prog) endef $(foreach c, config menuconfig nconfig gconfig xconfig, $(eval $(call config_rule,$(c)))) PHONY += localmodconfig localyesconfig localyesconfig localmodconfig: $(obj)/conf $(Q)$(PERL) $(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config $(Q)if [ -f .config ]; then \ cmp -s .tmp.config .config || \ (mv -f .config .config.old.1; \ mv -f .tmp.config .config; \ $< $(silent) --oldconfig $(Kconfig); \ mv -f .config.old.1 .config.old) \ else \ mv -f .tmp.config .config; \ $< $(silent) --oldconfig $(Kconfig); \ fi $(Q)rm -f .tmp.config # These targets map 1:1 to the commandline options of 'conf' # # Note: # syncconfig has become an internal implementation detail and is now # deprecated for external use simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \ alldefconfig randconfig listnewconfig olddefconfig syncconfig \ helpnewconfig yes2modconfig mod2yesconfig mod2noconfig PHONY += $(simple-targets) $(simple-targets): $(obj)/conf $(Q)$< $(silent) --$@ $(Kconfig) PHONY += savedefconfig defconfig savedefconfig: $(obj)/conf $(Q)$< $(silent) --$@=defconfig $(Kconfig) defconfig: $(obj)/conf ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),) @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) else @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'" $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG) endif %_defconfig: $(obj)/conf $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig) configfiles = $(wildcard $(srctree)/kernel/configs/$(1) $(srctree)/arch/$(SRCARCH)/configs/$(1)) all-config-fragments = $(call configfiles,*.config) config-fragments = $(call configfiles,$@) %.config: $(obj)/conf $(if $(config-fragments),, $(error $@ fragment does not exists on this architecture)) $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m $(KCONFIG_CONFIG) $(config-fragments) $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig PHONY += tinyconfig tinyconfig: $(Q)KCONFIG_ALLCONFIG=kernel/configs/tiny-base.config $(MAKE) -f $(srctree)/Makefile allnoconfig $(Q)$(MAKE) -f $(srctree)/Makefile tiny.config # CHECK: -o cache_dir=<path> working? PHONY += testconfig testconfig: $(obj)/conf $(Q)$(PYTHON3) -B -m pytest $(src)/tests \ -o cache_dir=$(abspath $(obj)/tests/.cache) \ $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no) clean-files += tests/.cache # Help text used by make help help: @echo 'Configuration targets:' @echo ' config - Update current config utilising a line-oriented program' @echo ' nconfig - Update current config utilising a ncurses menu based program' @echo ' menuconfig - Update current config utilising a menu based program' @echo ' xconfig - Update current config utilising a Qt based front-end' @echo ' gconfig - Update current config utilising a GTK+ based front-end' @echo ' oldconfig - Update current config utilising a provided .config as base' @echo ' localmodconfig - Update current config disabling modules not loaded' @echo ' except those preserved by LMC_KEEP environment variable' @echo ' localyesconfig - Update current config converting local mods to core' @echo ' except those preserved by LMC_KEEP environment variable' @echo ' defconfig - New config with default from ARCH supplied defconfig' @echo ' savedefconfig - Save current config as ./defconfig (minimal config)' @echo ' allnoconfig - New config where all options are answered with no' @echo ' allyesconfig - New config where all options are accepted with yes' @echo ' allmodconfig - New config selecting modules when possible' @echo ' alldefconfig - New config with all symbols set to default' @echo ' randconfig - New config with random answer to all options' @echo ' yes2modconfig - Change answers from yes to mod if possible' @echo ' mod2yesconfig - Change answers from mod to yes if possible' @echo ' mod2noconfig - Change answers from mod to no if possible' @echo ' listnewconfig - List new options' @echo ' helpnewconfig - List new options and help text' @echo ' olddefconfig - Same as oldconfig but sets new symbols to their' @echo ' default value without prompting' @echo ' tinyconfig - Configure the tiniest possible kernel' @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)' @echo '' @echo 'Configuration topic targets:' @$(foreach f, $(all-config-fragments), \ if help=$$(grep -m1 '^# Help: ' $(f)); then \ printf ' %-25s - %s\n' '$(notdir $(f))' "$${help#*: }"; \ fi;) # =========================================================================== # object files used by all kconfig flavours common-objs := confdata.o expr.o lexer.lex.o menu.o parser.tab.o \ preprocess.o symbol.o util.o $(obj)/lexer.lex.o: $(obj)/parser.tab.h HOSTCFLAGS_lexer.lex.o := -I $(src) HOSTCFLAGS_parser.tab.o := -I $(src) # conf: Used for defconfig, oldconfig and related targets hostprogs += conf conf-objs := conf.o $(common-objs) # nconf: Used for the nconfig target based on ncurses hostprogs += nconf nconf-objs := nconf.o nconf.gui.o mnconf-common.o $(common-objs) HOSTLDLIBS_nconf = $(call read-file, $(obj)/nconf-libs) HOSTCFLAGS_nconf.o = $(call read-file, $(obj)/nconf-cflags) HOSTCFLAGS_nconf.gui.o = $(call read-file, $(obj)/nconf-cflags) $(obj)/nconf: | $(obj)/nconf-libs $(obj)/nconf.o $(obj)/nconf.gui.o: | $(obj)/nconf-cflags # mconf: Used for the menuconfig target based on lxdialog hostprogs += mconf lxdialog := $(addprefix lxdialog/, \ checklist.o inputbox.o menubox.o textbox.o util.o yesno.o) mconf-objs := mconf.o $(lxdialog) mnconf-common.o $(common-objs) HOSTLDLIBS_mconf = $(call read-file, $(obj)/mconf-libs) $(foreach f, mconf.o $(lxdialog), \ $(eval HOSTCFLAGS_$f = $$(call read-file, $(obj)/mconf-cflags))) $(obj)/mconf: | $(obj)/mconf-libs $(addprefix $(obj)/, mconf.o $(lxdialog)): | $(obj)/mconf-cflags # qconf: Used for the xconfig target based on Qt hostprogs += qconf qconf-cxxobjs := qconf.o qconf-moc.o qconf-objs := images.o $(common-objs) HOSTLDLIBS_qconf = $(call read-file, $(obj)/qconf-libs) HOSTCXXFLAGS_qconf.o = -std=c++11 -fPIC $(call read-file, $(obj)/qconf-cflags) HOSTCXXFLAGS_qconf-moc.o = -std=c++11 -fPIC $(call read-file, $(obj)/qconf-cflags) $(obj)/qconf: | $(obj)/qconf-libs $(obj)/qconf.o $(obj)/qconf-moc.o: | $(obj)/qconf-cflags quiet_cmd_moc = MOC $@ cmd_moc = $(call read-file, $(obj)/qconf-bin)/moc $< -o $@ $(obj)/qconf-moc.cc: $(src)/qconf.h FORCE | $(obj)/qconf-bin $(call if_changed,moc) targets += qconf-moc.cc # gconf: Used for the gconfig target based on GTK+ hostprogs += gconf gconf-objs := gconf.o images.o $(common-objs) HOSTLDLIBS_gconf = $(call read-file, $(obj)/gconf-libs) HOSTCFLAGS_gconf.o = $(call read-file, $(obj)/gconf-cflags) $(obj)/gconf: | $(obj)/gconf-libs $(obj)/gconf.o: | $(obj)/gconf-cflags # check if necessary packages are available, and configure build flags cmd_conf_cfg = $< $(addprefix $(obj)/$*conf-, cflags libs bin); touch $(obj)/$*conf-bin $(obj)/%conf-cflags $(obj)/%conf-libs $(obj)/%conf-bin: $(src)/%conf-cfg.sh $(call cmd,conf_cfg) clean-files += *conf-cflags *conf-libs *conf-bin |