9903ea1c11
Fix warnings where undefined vars are used. Make Kconfig emit "FOO=" for unset bool options To ensure make variables are always defined, even if empty. When writing auto.conf, include symbols disabled by dependency to make sure all make variables are always defined. Fixes espressif/esp-idf#137 Cherry-picked from https://github.com/espressif/esp-idf/pull/138
314 lines
10 KiB
Makefile
314 lines
10 KiB
Makefile
# ===========================================================================
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# Kernel configuration targets
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# These targets are used from top-level makefile
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PHONY += xconfig gconfig menuconfig config silentoldconfig \
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localmodconfig localyesconfig clean
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ifdef KBUILD_KCONFIG
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Kconfig := $(KBUILD_KCONFIG)
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else
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Kconfig := Kconfig
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endif
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ifeq ($(quiet),silent_)
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silent := -s
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endif
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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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# Unset some environment variables set in the project environment
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CFLAGS :=
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CPPFLAGS :=
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LDFLAGS :=
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default: mconf conf
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xconfig: qconf
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$< $(silent) $(Kconfig)
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gconfig: gconf
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$< $(silent) $(Kconfig)
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menuconfig: mconf
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$< $(silent) $(Kconfig)
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config: conf
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$< $(silent) --oldaskconfig $(Kconfig)
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nconfig: nconf
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$< $(silent) $(Kconfig)
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silentoldconfig: conf
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mkdir -p include/config include/generated
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$< $(silent) --$@ $(Kconfig)
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localyesconfig localmodconfig: streamline_config.pl conf
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mkdir -p include/config include/generated
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perl $< --$@ . $(Kconfig) > .tmp.config
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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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conf $(silent) --silentoldconfig $(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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conf $(silent) --silentoldconfig $(Kconfig); \
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fi
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rm -f .tmp.config
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# These targets map 1:1 to the commandline options of 'conf'
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simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
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alldefconfig randconfig listnewconfig olddefconfig
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PHONY += $(simple-targets)
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$(simple-targets): conf
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$< $(silent) --$@ $(Kconfig)
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PHONY += oldnoconfig savedefconfig defconfig
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# oldnoconfig is an alias of olddefconfig, because people already are dependent
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# on its behavior (sets new symbols to their default value but not 'n') with the
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# counter-intuitive name.
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oldnoconfig: olddefconfig
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savedefconfig: conf
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$< $(silent) --$@=defconfig $(Kconfig)
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defconfig: conf
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ifeq ($(KBUILD_DEFCONFIG),)
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$< $(silent) --defconfig $(Kconfig)
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else
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ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
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@$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
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$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
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else
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@$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
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$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
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endif
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endif
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%_defconfig: conf
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$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
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configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
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%.config: conf
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$(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
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$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
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+yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
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PHONY += kvmconfig
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kvmconfig: kvm_guest.config
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@:
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PHONY += xenconfig
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xenconfig: xen.config
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@:
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PHONY += tinyconfig
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tinyconfig:
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$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
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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'
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@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'
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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 ' listnewconfig - List new options'
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@echo ' olddefconfig - Same as silentoldconfig but sets new symbols to their'
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@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
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check-lxdialog := 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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CFLAGS += $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) \
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-DLOCALE -MD
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# ===========================================================================
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# Shared Makefile for the various kconfig executables:
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# conf: Used for defconfig, oldconfig and related targets
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# nconf: Used for the nconfig target.
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# Utilizes ncurses
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# mconf: Used for the menuconfig target
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# Utilizes the lxdialog package
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# 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
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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)
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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
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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 *.d
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clean-files += zconf.tab.c zconf.lex.c zconf.hash.c gconf.glade.h
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clean-files += $(conf-objs) $(mconf-objs) conf mconf $(lxdialog)
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# Check that we have the required ncurses stuff installed for lxdialog (menuconfig)
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PHONY += dochecklxdialog
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$(addprefix ,$(lxdialog)): dochecklxdialog
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dochecklxdialog:
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$(CONFIG_SHELL) $(check-lxdialog) -check $(CC) $(CFLAGS) $(LOADLIBES_mconf)
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always := dochecklxdialog
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# Add environment specific flags
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EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(CC) $(CFLAGS))
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# generated files seem to need this to find local include files
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CFLAGS_zconf.lex.o := -I$(src)
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CFLAGS_zconf.tab.o := -I$(src)
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LEX_PREFIX_zconf := zconf
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YACC_PREFIX_zconf := zconf
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LOADLIBES_qconf = $(KC_QT_LIBS)
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CXXFLAGS_qconf.o = $(KC_QT_CFLAGS)
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LOADLIBES_gconf = `pkg-config --libs gtk+-2.0 gmodule-2.0 libglade-2.0`
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CFLAGS_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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LOADLIBES_mconf = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(CC))
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LOADLIBES_conf = $(LOADLIBES_mconf)
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LOADLIBES_nconf = $(shell \
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pkg-config --libs menuw panelw ncursesw 2>/dev/null \
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|| pkg-config --libs menu panel ncurses 2>/dev/null \
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|| echo "-lmenu -lpanel -lncurses" )
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ifeq ("$(OS)","Windows_NT")
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# Windows toolchains don't seem to count libintl
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# as a system library
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LOADLIBES_mconf += -lintl
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LOADLIBES_nconf += -lintl
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endif
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qconf.o: .tmp_qtcheck
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ifeq ($(MAKECMDGOALS),xconfig)
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.tmp_qtcheck: $(src)/Makefile
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-include .tmp_qtcheck
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# Qt needs some extra effort...
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.tmp_qtcheck:
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@set -e; $(kecho) " CHECK qt"; \
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if pkg-config --exists Qt5Core; then \
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cflags="-std=c++11 -fPIC `pkg-config --cflags Qt5Core Qt5Gui Qt5Widgets`"; \
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libs=`pkg-config --libs Qt5Core Qt5Gui Qt5Widgets`; \
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moc=`pkg-config --variable=host_bins Qt5Core`/moc; \
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elif pkg-config --exists QtCore; then \
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cflags=`pkg-config --cflags QtCore QtGui`; \
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libs=`pkg-config --libs QtCore QtGui`; \
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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."; \
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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 "*"; \
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exit 1; \
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fi; \
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echo "KC_QT_CFLAGS=$$cflags" > $@; \
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echo "KC_QT_LIBS=$$libs" >> $@; \
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echo "KC_QT_MOC=$$moc" >> $@
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endif
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gconf.o: .tmp_gtkcheck
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ifeq ($(MAKECMDGOALS),gconfig)
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-include .tmp_gtkcheck
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# GTK+ needs some extra effort, too...
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.tmp_gtkcheck:
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@if `pkg-config --exists gtk+-2.0 gmodule-2.0 libglade-2.0`; then \
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if `pkg-config --atleast-version=2.0.0 gtk+-2.0`; then \
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touch $@; \
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else \
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echo >&2 "*"; \
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echo >&2 "* GTK+ is present but version >= 2.0.0 is required."; \
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echo >&2 "*"; \
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false; \
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fi \
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else \
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echo >&2 "*"; \
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echo >&2 "* Unable to find the GTK+ installation. Please make sure that"; \
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echo >&2 "* the GTK+ 2.0 development package is correctly installed..."; \
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echo >&2 "* You need gtk+-2.0, glib-2.0 and libglade-2.0."; \
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echo >&2 "*"; \
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false; \
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fi
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endif
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zconf.tab.o: zconf.lex.c zconf.hash.c
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qconf.o: qconf.moc
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quiet_cmd_moc = MOC $@
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cmd_moc = $(KC_QT_MOC) -i $< -o $@
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%.moc: $(src)/%.h .tmp_qtcheck
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$(call cmd,moc)
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# Extract gconf menu items for i18n support
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gconf.glade.h: gconf.glade
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intltool-extract --type=gettext/glade --srcdir=$(srctree) \
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gconf.glade
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mconf: $(mconf-objs)
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$(CC) -o $@ $(mconf-objs) $(LOADLIBES_mconf)
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conf: $(conf-objs)
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$(CC) -o $@ $(conf-objs) $(LOADLIBES_conf)
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zconf.tab.c: zconf.lex.c
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zconf.lex.c: zconf.l
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flex -L -P zconf -o zconf.lex.c zconf.l
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zconf.hash.c: zconf.gperf
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# strip CRs on Windows systems where gperf will otherwise barf on them
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sed -E "s/\\x0D$$//" zconf.gperf | gperf -t --output-file zconf.hash.c -a -C -E -g -k '1,3,$$' -p -t
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zconf.tab.c: zconf.y
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bison -t -l -p zconf -o zconf.tab.c zconf.y
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clean:
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rm -f $(clean-files)
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-include $(wildcard *.d)
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-include $(wildcard lxdialog/*.d)
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