linux-imx/scripts/kconfig/Makefile

SPDX-License-Identifier: GPL-2.0

===========================================================================

Kernel configuration targets

These targets are used from top-level makefile

PHONY += xconfig gconfig menuconfig config localmodconfig localyesconfig
build_menuconfig build_nconfig build_gconfig build_xconfig

ifdef KBUILD_KCONFIG Kconfig := $(KBUILD_KCONFIG) else Kconfig := Kconfig endif

ifeq ($(quiet),silent_) silent := -s endif

We need this, in case the user has it in its environment

unexport CONFIG_

xconfig: $(obj)/qconf $< $(silent) $(Kconfig)

gconfig: $(obj)/gconf $< $(silent) $(Kconfig)

menuconfig: $(obj)/mconf $< $(silent) $(Kconfig)

config: $(obj)/conf $< $(silent) --oldaskconfig $(Kconfig)

nconfig: $(obj)/nconf $< $(silent) $(Kconfig)

build_menuconfig: $(obj)/mconf

build_nconfig: $(obj)/nconf

build_gconfig: $(obj)/gconf

build_xconfig: $(obj)/qconf

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 PHONY += $(simple-targets)

$(simple-targets): $(obj)/conf $< $(silent) --$@ $(Kconfig)

PHONY += savedefconfig defconfig

savedefconfig: $(obj)/conf $< $(silent) --$@=defconfig $(Kconfig)

defconfig: $(obj)/conf ifeq ($(KBUILD_DEFCONFIG),) $< $(silent) --defconfig $(Kconfig) else ifneq ($(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 endif

%_defconfig: $(obj)/conf $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)

configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)

%.config: $(obj)/conf $(if $(call configfiles),, $(error No configuration exists for this target on this architecture)) $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles) +$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig

PHONY += kvmconfig kvmconfig: kvm_guest.config @:

PHONY += xenconfig xenconfig: xen.config @:

PHONY += tinyconfig tinyconfig: $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config

CHECK: -o cache_dir= working?

PHONY += testconfig testconfig: $(obj)/conf $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests
-o cache_dir=$(abspath $(obj)/tests/.cache)
$(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no) clean-dirs += tests/.cache

Help text used by make help

help: @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 ' localyesconfig - Update current config converting local mods to core' @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 ' listnewconfig - List new options' @echo ' olddefconfig - Same as oldconfig but sets new symbols to their' @echo ' default value without prompting' @echo ' kvmconfig - Enable additional options for kvm guest kernel support' @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support' @echo ' tinyconfig - Configure the tiniest possible kernel' @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'

===========================================================================

object files used by all kconfig flavours

common-objs := confdata.o expr.o symbol.o preprocess.o zconf.lex.o zconf.tab.o

$(obj)/zconf.lex.o: $(obj)/zconf.tab.h HOSTCFLAGS_zconf.lex.o := -I$(src) HOSTCFLAGS_zconf.tab.o := -I$(src)

conf: Used for defconfig, oldconfig and related targets

hostprogs-y += conf conf-objs := conf.o $(common-objs)

nconf: Used for the nconfig target based on ncurses

hostprogs-y += nconf nconf-objs := nconf.o nconf.gui.o $(common-objs)

HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs) HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags) HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags)

$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg

mconf: Used for the menuconfig target based on lxdialog

hostprogs-y += mconf lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o mconf-objs := mconf.o $(addprefix lxdialog/, $(lxdialog)) $(common-objs)

HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs) $(foreach f, mconf.o $(lxdialog),
$(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))

$(obj)/mconf.o: $(obj)/mconf-cfg $(addprefix $(obj)/lxdialog/, $(lxdialog)): $(obj)/mconf-cfg

qconf: Used for the xconfig target based on Qt

hostprogs-y += qconf qconf-cxxobjs := qconf.o qconf-objs := images.o $(common-objs)

HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs) HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags)

$(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc

quiet_cmd_moc = MOC $@ cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@

$(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg $(call cmd,moc)

gconf: Used for the gconfig target based on GTK+

hostprogs-y += gconf gconf-objs := gconf.o images.o $(common-objs)

HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs) HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags)

$(obj)/gconf.o: $(obj)/gconf-cfg

check if necessary packages are available, and configure build flags

filechk_conf_cfg = $(CONFIG_SHELL) $<

$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE $(call filechk,conf_cfg)

clean-files += *conf-cfg