1 # SPDX-License-Identifier: GPL-2.0
2 # ===========================================================================
3 # Kernel configuration targets
4 # These targets are used from top-level makefile
6 PHONY += xconfig gconfig menuconfig config localmodconfig localyesconfig \
7 build_menuconfig build_nconfig build_gconfig build_xconfig
10 Kconfig := $(KBUILD_KCONFIG)
15 ifndef KBUILD_DEFCONFIG
16 KBUILD_DEFCONFIG := defconfig
19 ifeq ($(quiet),silent_)
23 # We need this, in case the user has it in its environment
27 $< $(silent) $(Kconfig)
30 $< $(silent) $(Kconfig)
32 menuconfig: $(obj)/mconf
33 $< $(silent) $(Kconfig)
36 $< $(silent) --oldaskconfig $(Kconfig)
39 $< $(silent) $(Kconfig)
41 build_menuconfig: $(obj)/mconf
43 build_nconfig: $(obj)/nconf
45 build_gconfig: $(obj)/gconf
47 build_xconfig: $(obj)/qconf
49 localyesconfig localmodconfig: $(obj)/conf
50 $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
51 $(Q)if [ -f .config ]; then \
52 cmp -s .tmp.config .config || \
53 (mv -f .config .config.old.1; \
54 mv -f .tmp.config .config; \
55 $< $(silent) --oldconfig $(Kconfig); \
56 mv -f .config.old.1 .config.old) \
58 mv -f .tmp.config .config; \
59 $< $(silent) --oldconfig $(Kconfig); \
63 # These targets map 1:1 to the commandline options of 'conf'
66 # syncconfig has become an internal implementation detail and is now
67 # deprecated for external use
68 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
69 alldefconfig randconfig listnewconfig olddefconfig syncconfig
70 PHONY += $(simple-targets)
72 $(simple-targets): $(obj)/conf
73 $< $(silent) --$@ $(Kconfig)
75 PHONY += savedefconfig defconfig
77 savedefconfig: $(obj)/conf
78 $< $(silent) --$@=defconfig $(Kconfig)
80 defconfig: $(obj)/conf
81 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
82 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
83 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
85 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
86 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
89 %_defconfig: $(obj)/conf
90 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
92 configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
95 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
96 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
97 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
100 kvmconfig: kvm_guest.config
104 xenconfig: xen.config
109 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
111 # CHECK: -o cache_dir=<path> working?
113 testconfig: $(obj)/conf
114 $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
115 -o cache_dir=$(abspath $(obj)/tests/.cache) \
116 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
117 clean-dirs += tests/.cache
119 # Help text used by make help
121 @echo ' config - Update current config utilising a line-oriented program'
122 @echo ' nconfig - Update current config utilising a ncurses menu based program'
123 @echo ' menuconfig - Update current config utilising a menu based program'
124 @echo ' xconfig - Update current config utilising a Qt based front-end'
125 @echo ' gconfig - Update current config utilising a GTK+ based front-end'
126 @echo ' oldconfig - Update current config utilising a provided .config as base'
127 @echo ' localmodconfig - Update current config disabling modules not loaded'
128 @echo ' localyesconfig - Update current config converting local mods to core'
129 @echo ' defconfig - New config with default from ARCH supplied defconfig'
130 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
131 @echo ' allnoconfig - New config where all options are answered with no'
132 @echo ' allyesconfig - New config where all options are accepted with yes'
133 @echo ' allmodconfig - New config selecting modules when possible'
134 @echo ' alldefconfig - New config with all symbols set to default'
135 @echo ' randconfig - New config with random answer to all options'
136 @echo ' listnewconfig - List new options'
137 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their'
138 @echo ' default value without prompting'
139 @echo ' kvmconfig - Enable additional options for kvm guest kernel support'
140 @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support'
141 @echo ' tinyconfig - Configure the tiniest possible kernel'
142 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'
144 # ===========================================================================
145 # object files used by all kconfig flavours
146 common-objs := confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \
149 $(obj)/lexer.lex.o: $(obj)/parser.tab.h
150 HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src)
151 HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
153 # conf: Used for defconfig, oldconfig and related targets
155 conf-objs := conf.o $(common-objs)
157 # nconf: Used for the nconfig target based on ncurses
159 nconf-objs := nconf.o nconf.gui.o $(common-objs)
161 HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs)
162 HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags)
163 HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags)
165 $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
167 # mconf: Used for the menuconfig target based on lxdialog
169 lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o
170 mconf-objs := mconf.o $(addprefix lxdialog/, $(lxdialog)) $(common-objs)
172 HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
173 $(foreach f, mconf.o $(lxdialog), \
174 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
176 $(obj)/mconf.o: $(obj)/mconf-cfg
177 $(addprefix $(obj)/lxdialog/, $(lxdialog)): $(obj)/mconf-cfg
179 # qconf: Used for the xconfig target based on Qt
181 qconf-cxxobjs := qconf.o
182 qconf-objs := images.o $(common-objs)
184 HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs)
185 HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags)
187 $(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
189 quiet_cmd_moc = MOC $@
190 cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
192 $(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
195 # gconf: Used for the gconfig target based on GTK+
197 gconf-objs := gconf.o images.o $(common-objs)
199 HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs)
200 HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags)
202 $(obj)/gconf.o: $(obj)/gconf-cfg
204 # check if necessary packages are available, and configure build flags
205 filechk_conf_cfg = $(CONFIG_SHELL) $<
207 $(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
208 $(call filechk,conf_cfg)
210 clean-files += *conf-cfg