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213 lines
7.6 KiB
213 lines
7.6 KiB
# SPDX-License-Identifier: GPL-2.0 |
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# =========================================================================== |
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# Kernel configuration targets |
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# These targets are used from top-level makefile |
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ifdef KBUILD_KCONFIG |
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Kconfig := $(KBUILD_KCONFIG) |
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else |
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Kconfig := Kconfig |
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endif |
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ifndef KBUILD_DEFCONFIG |
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KBUILD_DEFCONFIG := defconfig |
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endif |
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ifeq ($(quiet),silent_) |
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silent := -s |
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endif |
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export KCONFIG_DEFCONFIG_LIST := |
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ifndef cross_compiling |
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kernel-release := $(shell uname -r) |
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KCONFIG_DEFCONFIG_LIST += \ |
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/lib/modules/$(kernel-release)/.config \ |
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/etc/kernel-config \ |
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/boot/config-$(kernel-release) |
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endif |
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KCONFIG_DEFCONFIG_LIST += arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) |
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# We need this, in case the user has it in its environment |
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unexport CONFIG_ |
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config-prog := conf |
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menuconfig-prog := mconf |
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nconfig-prog := nconf |
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gconfig-prog := gconf |
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xconfig-prog := qconf |
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define config_rule |
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PHONY += $(1) |
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$(1): $(obj)/$($(1)-prog) |
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$(Q)$$< $(silent) $(Kconfig) |
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PHONY += build_$(1) |
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build_$(1): $(obj)/$($(1)-prog) |
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endef |
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$(foreach c, config menuconfig nconfig gconfig xconfig, $(eval $(call config_rule,$(c)))) |
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PHONY += localmodconfig localyesconfig |
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localyesconfig localmodconfig: $(obj)/conf |
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$(Q)$(PERL) $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config |
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$(Q)if [ -f .config ]; then \ |
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cmp -s .tmp.config .config || \ |
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(mv -f .config .config.old.1; \ |
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mv -f .tmp.config .config; \ |
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$< $(silent) --oldconfig $(Kconfig); \ |
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mv -f .config.old.1 .config.old) \ |
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else \ |
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mv -f .tmp.config .config; \ |
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$< $(silent) --oldconfig $(Kconfig); \ |
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fi |
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$(Q)rm -f .tmp.config |
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# These targets map 1:1 to the commandline options of 'conf' |
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# |
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# Note: |
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# syncconfig has become an internal implementation detail and is now |
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# deprecated for external use |
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simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \ |
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alldefconfig randconfig listnewconfig olddefconfig syncconfig \ |
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helpnewconfig yes2modconfig mod2yesconfig |
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PHONY += $(simple-targets) |
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$(simple-targets): $(obj)/conf |
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$(Q)$< $(silent) --$@ $(Kconfig) |
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PHONY += savedefconfig defconfig |
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savedefconfig: $(obj)/conf |
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$(Q)$< $(silent) --$@=defconfig $(Kconfig) |
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defconfig: $(obj)/conf |
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ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),) |
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@$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" |
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$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) |
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else |
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@$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'" |
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$(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG) |
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endif |
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%_defconfig: $(obj)/conf |
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$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig) |
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configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@) |
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%.config: $(obj)/conf |
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$(if $(call configfiles),, $(error No configuration exists for this target on this architecture)) |
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles) |
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$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig |
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PHONY += tinyconfig |
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tinyconfig: |
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$(Q)KCONFIG_ALLCONFIG=kernel/configs/tiny-base.config $(MAKE) -f $(srctree)/Makefile allnoconfig |
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$(Q)$(MAKE) -f $(srctree)/Makefile tiny.config |
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# CHECK: -o cache_dir=<path> working? |
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PHONY += testconfig |
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testconfig: $(obj)/conf |
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$(Q)$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \ |
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-o cache_dir=$(abspath $(obj)/tests/.cache) \ |
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$(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no) |
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clean-files += tests/.cache |
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# Help text used by make help |
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help: |
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@echo ' config - Update current config utilising a line-oriented program' |
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@echo ' nconfig - Update current config utilising a ncurses menu based program' |
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@echo ' menuconfig - Update current config utilising a menu based program' |
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@echo ' xconfig - Update current config utilising a Qt based front-end' |
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@echo ' gconfig - Update current config utilising a GTK+ based front-end' |
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@echo ' oldconfig - Update current config utilising a provided .config as base' |
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@echo ' localmodconfig - Update current config disabling modules not loaded' |
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@echo ' except those preserved by LMC_KEEP environment variable' |
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@echo ' localyesconfig - Update current config converting local mods to core' |
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@echo ' except those preserved by LMC_KEEP environment variable' |
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@echo ' defconfig - New config with default from ARCH supplied defconfig' |
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@echo ' savedefconfig - Save current config as ./defconfig (minimal config)' |
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@echo ' allnoconfig - New config where all options are answered with no' |
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@echo ' allyesconfig - New config where all options are accepted with yes' |
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@echo ' allmodconfig - New config selecting modules when possible' |
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@echo ' alldefconfig - New config with all symbols set to default' |
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@echo ' randconfig - New config with random answer to all options' |
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@echo ' yes2modconfig - Change answers from yes to mod if possible' |
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@echo ' mod2yesconfig - Change answers from mod to yes if possible' |
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@echo ' listnewconfig - List new options' |
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@echo ' helpnewconfig - List new options and help text' |
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@echo ' olddefconfig - Same as oldconfig but sets new symbols to their' |
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@echo ' default value without prompting' |
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@echo ' tinyconfig - Configure the tiniest possible kernel' |
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@echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)' |
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# =========================================================================== |
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# object files used by all kconfig flavours |
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common-objs := confdata.o expr.o lexer.lex.o menu.o parser.tab.o \ |
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preprocess.o symbol.o util.o |
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$(obj)/lexer.lex.o: $(obj)/parser.tab.h |
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HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src) |
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HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src) |
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# conf: Used for defconfig, oldconfig and related targets |
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hostprogs += conf |
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conf-objs := conf.o $(common-objs) |
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# nconf: Used for the nconfig target based on ncurses |
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hostprogs += nconf |
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nconf-objs := nconf.o nconf.gui.o $(common-objs) |
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HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs) |
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HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) |
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HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) |
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$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg |
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# mconf: Used for the menuconfig target based on lxdialog |
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hostprogs += mconf |
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lxdialog := $(addprefix lxdialog/, \ |
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checklist.o inputbox.o menubox.o textbox.o util.o yesno.o) |
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mconf-objs := mconf.o $(lxdialog) $(common-objs) |
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HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs) |
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$(foreach f, mconf.o $(lxdialog), \ |
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$(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags))) |
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$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg |
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# qconf: Used for the xconfig target based on Qt |
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hostprogs += qconf |
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qconf-cxxobjs := qconf.o qconf-moc.o |
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qconf-objs := images.o $(common-objs) |
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HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs) |
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HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags) |
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HOSTCXXFLAGS_qconf-moc.o = $(shell . $(obj)/qconf-cfg && echo $$cflags) |
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$(obj)/qconf.o: $(obj)/qconf-cfg |
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quiet_cmd_moc = MOC $@ |
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cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) $< -o $@ |
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$(obj)/qconf-moc.cc: $(src)/qconf.h $(obj)/qconf-cfg FORCE |
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$(call if_changed,moc) |
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targets += qconf-moc.cc |
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# gconf: Used for the gconfig target based on GTK+ |
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hostprogs += gconf |
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gconf-objs := gconf.o images.o $(common-objs) |
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HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs) |
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HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags) |
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$(obj)/gconf.o: $(obj)/gconf-cfg |
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# check if necessary packages are available, and configure build flags |
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filechk_conf_cfg = $(CONFIG_SHELL) $< |
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$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE |
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$(call filechk,conf_cfg) |
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clean-files += *conf-cfg
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