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# ===========================================================================
# Kernel configuration targets
# These targets are used from top-level makefile

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PHONY += xconfig gconfig menuconfig config silentoldconfig update-po-config \
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	localmodconfig localyesconfig
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ifdef KBUILD_KCONFIG
Kconfig := $(KBUILD_KCONFIG)
else
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Kconfig := Kconfig
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endif
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ifeq ($(quiet),silent_)
silent := -s
endif

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

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xconfig: $(obj)/qconf
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	$< $(silent) $(Kconfig)
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gconfig: $(obj)/gconf
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	$< $(silent) $(Kconfig)
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menuconfig: $(obj)/mconf
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	$< $(silent) $(Kconfig)
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config: $(obj)/conf
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	$< $(silent) --oldaskconfig $(Kconfig)
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nconfig: $(obj)/nconf
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	$< $(silent) $(Kconfig)
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silentoldconfig: $(obj)/conf
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	$(Q)mkdir -p include/config include/generated
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	$(Q)test -e include/generated/autoksyms.h || \
	    touch   include/generated/autoksyms.h
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	$< $(silent) --$@ $(Kconfig)
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localyesconfig localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
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	$(Q)mkdir -p include/config include/generated
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	$(Q)perl $< --$@ $(srctree) $(Kconfig) > .tmp.config
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	$(Q)if [ -f .config ]; then 					\
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			cmp -s .tmp.config .config ||			\
			(mv -f .config .config.old.1;			\
			 mv -f .tmp.config .config;			\
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			 $(obj)/conf $(silent) --silentoldconfig $(Kconfig); \
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			 mv -f .config.old.1 .config.old)		\
	else								\
			mv -f .tmp.config .config;			\
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			$(obj)/conf $(silent) --silentoldconfig $(Kconfig); \
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	fi
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	$(Q)rm -f .tmp.config

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# Create new linux.pot file
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# Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files
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update-po-config: $(obj)/kxgettext $(obj)/gconf.glade.h
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	$(Q)$(kecho) "  GEN     config.pot"
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	$(Q)xgettext --default-domain=linux                         \
	    --add-comments --keyword=_ --keyword=N_                 \
	    --from-code=UTF-8                                       \
	    --files-from=$(srctree)/scripts/kconfig/POTFILES.in     \
	    --directory=$(srctree) --directory=$(objtree)           \
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	    --output $(obj)/config.pot
	$(Q)sed -i s/CHARSET/UTF-8/ $(obj)/config.pot
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	$(Q)(for i in `ls $(srctree)/arch/*/Kconfig      \
	    $(srctree)/arch/*/um/Kconfig`;               \
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	    do                                           \
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		$(kecho) "  GEN     $$i";                    \
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		$(obj)/kxgettext $$i                     \
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		     >> $(obj)/config.pot;               \
	    done )
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	$(Q)$(kecho) "  GEN     linux.pot"
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	$(Q)msguniq --sort-by-file --to-code=UTF-8 $(obj)/config.pot \
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	    --output $(obj)/linux.pot
	$(Q)rm -f $(obj)/config.pot
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# These targets map 1:1 to the commandline options of 'conf'
simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
	alldefconfig randconfig listnewconfig olddefconfig
PHONY += $(simple-targets)
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$(simple-targets): $(obj)/conf
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	$< $(silent) --$@ $(Kconfig)
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PHONY += oldnoconfig savedefconfig defconfig
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# oldnoconfig is an alias of olddefconfig, because people already are dependent
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# on its behavior (sets new symbols to their default value but not 'n') with the
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# counter-intuitive name.
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oldnoconfig: olddefconfig
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savedefconfig: $(obj)/conf
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	$< $(silent) --$@=defconfig $(Kconfig)
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defconfig: $(obj)/conf
ifeq ($(KBUILD_DEFCONFIG),)
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	$< $(silent) --defconfig $(Kconfig)
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else
ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
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	@$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
	$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
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else
	@$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
	$(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
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endif
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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
	$(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
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PHONY += kvmconfig
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kvmconfig: kvm_guest.config
	@:
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PHONY += xenconfig
xenconfig: xen.config
	@:

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PHONY += tinyconfig
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tinyconfig:
	$(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
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# Help text used by make help
help:
	@echo  '  config	  - Update current config utilising a line-oriented program'
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	@echo  '  nconfig         - Update current config utilising a ncurses menu based'
	@echo  '                    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  '  localyesconfig  - Update current config converting local mods to core'
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	@echo  '  silentoldconfig - Same as oldconfig, but quietly, additionally update deps'
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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'
	@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'
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	@echo  '  listnewconfig   - List new options'
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	@echo  '  olddefconfig	  - Same as silentoldconfig but sets new symbols to their'
	@echo  '                    default value'
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	@echo  '  kvmconfig	  - Enable additional options for kvm guest kernel support'
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	@echo  '  xenconfig       - Enable additional options for xen dom0 and guest kernel support'
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	@echo  '  tinyconfig	  - Configure the tiniest possible kernel'
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# lxdialog stuff
check-lxdialog  := $(srctree)/$(src)/lxdialog/check-lxdialog.sh

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# Use recursively expanded variables so we do not call gcc unless
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# we really need to do so. (Do not call gcc as part of make mrproper)
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HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) \
                    -DLOCALE
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# ===========================================================================
# Shared Makefile for the various kconfig executables:
# conf:	  Used for defconfig, oldconfig and related targets
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# nconf:  Used for the nconfig target.
#         Utilizes ncurses
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# mconf:  Used for the menuconfig target
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#         Utilizes the lxdialog package
# qconf:  Used for the xconfig target
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#         Based on Qt which needs to be installed to compile it
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# gconf:  Used for the gconfig target
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#         Based on GTK+ which needs to be installed to compile it
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# object files used by all kconfig flavours

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lxdialog := lxdialog/checklist.o lxdialog/util.o lxdialog/inputbox.o
lxdialog += lxdialog/textbox.o lxdialog/yesno.o lxdialog/menubox.o

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conf-objs	:= conf.o  zconf.tab.o
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mconf-objs     := mconf.o zconf.tab.o $(lxdialog)
nconf-objs     := nconf.o zconf.tab.o nconf.gui.o
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kxgettext-objs	:= kxgettext.o zconf.tab.o
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qconf-cxxobjs	:= qconf.o
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qconf-objs	:= zconf.tab.o
gconf-objs	:= gconf.o zconf.tab.o
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hostprogs-y := conf nconf mconf kxgettext qconf gconf
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clean-files	:= qconf.moc .tmp_qtcheck .tmp_gtkcheck
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clean-files	+= zconf.tab.c zconf.lex.c zconf.hash.c gconf.glade.h
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clean-files     += config.pot linux.pot
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# Check that we have the required ncurses stuff installed for lxdialog (menuconfig)
PHONY += $(obj)/dochecklxdialog
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$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/dochecklxdialog
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$(obj)/dochecklxdialog:
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	$(Q)$(CONFIG_SHELL) $(check-lxdialog) -check $(HOSTCC) $(HOST_EXTRACFLAGS) $(HOSTLOADLIBES_mconf)
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always := dochecklxdialog

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# Add environment specific flags
HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCC) $(HOSTCFLAGS))
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# generated files seem to need this to find local include files
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HOSTCFLAGS_zconf.lex.o	:= -I$(src)
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HOSTCFLAGS_zconf.tab.o	:= -I$(src)

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LEX_PREFIX_zconf	:= zconf
YACC_PREFIX_zconf	:= zconf

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HOSTLOADLIBES_qconf	= $(KC_QT_LIBS)
HOSTCXXFLAGS_qconf.o	= $(KC_QT_CFLAGS)
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HOSTLOADLIBES_gconf	= `pkg-config --libs gtk+-2.0 gmodule-2.0 libglade-2.0`
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HOSTCFLAGS_gconf.o	= `pkg-config --cflags gtk+-2.0 gmodule-2.0 libglade-2.0` \
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                          -Wno-missing-prototypes
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HOSTLOADLIBES_mconf   = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC))

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HOSTLOADLIBES_nconf	= $(shell \
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				pkg-config --libs menuw panelw ncursesw 2>/dev/null \
				|| pkg-config --libs menu panel ncurses 2>/dev/null \
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				|| echo "-lmenu -lpanel -lncurses"  )
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$(obj)/qconf.o: $(obj)/.tmp_qtcheck

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ifeq ($(MAKECMDGOALS),xconfig)
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$(obj)/.tmp_qtcheck: $(src)/Makefile
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-include $(obj)/.tmp_qtcheck

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# Qt needs some extra effort...
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$(obj)/.tmp_qtcheck:
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	@set -e; $(kecho) "  CHECK   qt"; \
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	if pkg-config --exists Qt5Core; then \
	    cflags="-std=c++11 -fPIC `pkg-config --cflags Qt5Core Qt5Gui Qt5Widgets`"; \
	    libs=`pkg-config --libs Qt5Core Qt5Gui Qt5Widgets`; \
	    moc=`pkg-config --variable=host_bins Qt5Core`/moc; \
	elif pkg-config --exists QtCore; then \
	    cflags=`pkg-config --cflags QtCore QtGui`; \
	    libs=`pkg-config --libs QtCore QtGui`; \
	    moc=`pkg-config --variable=moc_location QtCore`; \
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	else \
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	    echo >&2 "*"; \
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	    echo >&2 "* Could not find Qt via pkg-config."; \
	    echo >&2 "* Please install either Qt 4.8 or 5.x. and make sure it's in PKG_CONFIG_PATH"; \
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	    echo >&2 "*"; \
	    exit 1; \
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	fi; \
	echo "KC_QT_CFLAGS=$$cflags" > $@; \
	echo "KC_QT_LIBS=$$libs" >> $@; \
	echo "KC_QT_MOC=$$moc" >> $@
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endif

$(obj)/gconf.o: $(obj)/.tmp_gtkcheck

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ifeq ($(MAKECMDGOALS),gconfig)
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-include $(obj)/.tmp_gtkcheck

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# GTK+ needs some extra effort, too...
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$(obj)/.tmp_gtkcheck:
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	@if `pkg-config --exists gtk+-2.0 gmodule-2.0 libglade-2.0`; then		\
		if `pkg-config --atleast-version=2.0.0 gtk+-2.0`; then			\
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			touch $@;								\
		else									\
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			echo >&2 "*"; 							\
			echo >&2 "* GTK+ is present but version >= 2.0.0 is required.";	\
			echo >&2 "*";							\
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			false;								\
		fi									\
	else										\
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		echo >&2 "*"; 								\
		echo >&2 "* Unable to find the GTK+ installation. Please make sure that"; 	\
		echo >&2 "* the GTK+ 2.0 development package is correctly installed..."; 	\
		echo >&2 "* You need gtk+-2.0, glib-2.0 and libglade-2.0."; 		\
		echo >&2 "*"; 								\
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		false;									\
	fi
endif

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$(obj)/zconf.tab.o: $(obj)/zconf.lex.c $(obj)/zconf.hash.c
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$(obj)/qconf.o: $(obj)/qconf.moc
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quiet_cmd_moc = MOC     $@
      cmd_moc = $(KC_QT_MOC) -i $< -o $@

$(obj)/%.moc: $(src)/%.h $(obj)/.tmp_qtcheck
	$(call cmd,moc)
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# Extract gconf menu items for i18n support
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$(obj)/gconf.glade.h: $(obj)/gconf.glade
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	$(Q)intltool-extract --type=gettext/glade --srcdir=$(srctree) \
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	$(obj)/gconf.glade