# 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) # 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) $(srctree)/$(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 .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= working? PHONY += testconfig testconfig: $(obj)/conf $(Q)$(PYTHON3) -B -m pytest $(srctree)/$(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))' "$${help#*: }"; \ fi;) # =========================================================================== # object files used by all kconfig flavours common-objs := confdata.o expr.o lexer.lex.o menu.o parser.tab.o \ preprocess.o symbol.o util.o $(obj)/lexer.lex.o: $(obj)/parser.tab.h HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src) HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src) # conf: Used for defconfig, oldconfig and related targets hostprogs += conf conf-objs := conf.o $(common-objs) # nconf: Used for the nconfig target based on ncurses hostprogs += nconf nconf-objs := nconf.o nconf.gui.o $(common-objs) HOSTLDLIBS_nconf = $(call read-file, $(obj)/nconf-libs) HOSTCFLAGS_nconf.o = $(call read-file, $(obj)/nconf-cflags) HOSTCFLAGS_nconf.gui.o = $(call read-file, $(obj)/nconf-cflags) $(obj)/nconf: | $(obj)/nconf-libs $(obj)/nconf.o $(obj)/nconf.gui.o: | $(obj)/nconf-cflags # mconf: Used for the menuconfig target based on lxdialog hostprogs += mconf lxdialog := $(addprefix lxdialog/, \ checklist.o inputbox.o menubox.o textbox.o util.o yesno.o) mconf-objs := mconf.o $(lxdialog) $(common-objs) HOSTLDLIBS_mconf = $(call read-file, $(obj)/mconf-libs) $(foreach f, mconf.o $(lxdialog), \ $(eval HOSTCFLAGS_$f = $$(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