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Diffstat (limited to 'scripts/kconfig/Makefile')
| -rw-r--r-- | scripts/kconfig/Makefile | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile new file mode 100644 index 0000000000..4eee155121 --- /dev/null +++ b/scripts/kconfig/Makefile @@ -0,0 +1,226 @@ +# 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=<path> 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 |