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
9 Kconfig := $(KBUILD_KCONFIG)
14 ifeq ($(quiet),silent_)
18 # We need this, in case the user has it in its environment
22 $< $(silent) $(Kconfig)
25 $< $(silent) $(Kconfig)
27 menuconfig: $(obj)/mconf
28 $< $(silent) $(Kconfig)
31 $< $(silent) --oldaskconfig $(Kconfig)
34 $< $(silent) $(Kconfig)
36 localyesconfig localmodconfig: $(obj)/conf
37 $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
38 $(Q)if [ -f .config ]; then \
39 cmp -s .tmp.config .config || \
40 (mv -f .config .config.old.1; \
41 mv -f .tmp.config .config; \
42 $< $(silent) --oldconfig $(Kconfig); \
43 mv -f .config.old.1 .config.old) \
45 mv -f .tmp.config .config; \
46 $< $(silent) --oldconfig $(Kconfig); \
50 # These targets map 1:1 to the commandline options of 'conf'
53 # syncconfig has become an internal implementation detail and is now
54 # deprecated for external use
55 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
56 alldefconfig randconfig listnewconfig olddefconfig syncconfig
57 PHONY += $(simple-targets)
59 $(simple-targets): $(obj)/conf
60 $< $(silent) --$@ $(Kconfig)
62 PHONY += oldnoconfig silentoldconfig savedefconfig defconfig
64 # oldnoconfig is an alias of olddefconfig, because people already are dependent
65 # on its behavior (sets new symbols to their default value but not 'n') with the
66 # counter-intuitive name.
67 oldnoconfig: olddefconfig
68 @echo " WARNING: \"oldnoconfig\" target will be removed after Linux 4.19"
69 @echo " Please use \"olddefconfig\" instead, which is an alias."
71 # We do not expect manual invokcation of "silentoldcofig" (or "syncconfig").
72 silentoldconfig: syncconfig
73 @echo " WARNING: \"silentoldconfig\" has been renamed to \"syncconfig\""
74 @echo " and is now an internal implementation detail."
75 @echo " What you want is probably \"oldconfig\"."
76 @echo " \"silentoldconfig\" will be removed after Linux 4.19"
78 savedefconfig: $(obj)/conf
79 $< $(silent) --$@=defconfig $(Kconfig)
81 defconfig: $(obj)/conf
82 ifeq ($(KBUILD_DEFCONFIG),)
83 $< $(silent) --defconfig $(Kconfig)
85 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
86 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
87 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
89 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
90 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
94 %_defconfig: $(obj)/conf
95 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
97 configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
100 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
101 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
102 +$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
105 kvmconfig: kvm_guest.config
109 xenconfig: xen.config
114 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
116 # CHECK: -o cache_dir=<path> working?
118 testconfig: $(obj)/conf
119 $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
120 -o cache_dir=$(abspath $(obj)/tests/.cache) \
121 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
122 clean-dirs += tests/.cache
124 # Help text used by make help
126 @echo ' config - Update current config utilising a line-oriented program'
127 @echo ' nconfig - Update current config utilising a ncurses menu based program'
128 @echo ' menuconfig - Update current config utilising a menu based program'
129 @echo ' xconfig - Update current config utilising a Qt based front-end'
130 @echo ' gconfig - Update current config utilising a GTK+ based front-end'
131 @echo ' oldconfig - Update current config utilising a provided .config as base'
132 @echo ' localmodconfig - Update current config disabling modules not loaded'
133 @echo ' localyesconfig - Update current config converting local mods to core'
134 @echo ' defconfig - New config with default from ARCH supplied defconfig'
135 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
136 @echo ' allnoconfig - New config where all options are answered with no'
137 @echo ' allyesconfig - New config where all options are accepted with yes'
138 @echo ' allmodconfig - New config selecting modules when possible'
139 @echo ' alldefconfig - New config with all symbols set to default'
140 @echo ' randconfig - New config with random answer to all options'
141 @echo ' listnewconfig - List new options'
142 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their'
143 @echo ' default value without prompting'
144 @echo ' kvmconfig - Enable additional options for kvm guest kernel support'
145 @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support'
146 @echo ' tinyconfig - Configure the tiniest possible kernel'
147 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'
149 # ===========================================================================
150 # Shared Makefile for the various kconfig executables:
151 # conf: Used for defconfig, oldconfig and related targets
152 # object files used by all kconfig flavours
154 conf-objs := conf.o zconf.tab.o
158 targets += zconf.lex.c
160 # generated files seem to need this to find local include files
161 HOSTCFLAGS_zconf.lex.o := -I$(src)
162 HOSTCFLAGS_zconf.tab.o := -I$(src)
164 # nconf: Used for the nconfig target based on ncurses
166 nconf-objs := nconf.o zconf.tab.o nconf.gui.o
168 HOSTLDLIBS_nconf = $(shell . $(obj)/.nconf-cfg && echo $$libs)
169 HOSTCFLAGS_nconf.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags)
170 HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags)
172 $(obj)/nconf.o: $(obj)/.nconf-cfg
174 # mconf: Used for the menuconfig target based on lxdialog
176 lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o
177 mconf-objs := mconf.o zconf.tab.o $(addprefix lxdialog/, $(lxdialog))
179 HOSTLDLIBS_mconf = $(shell . $(obj)/.mconf-cfg && echo $$libs)
180 $(foreach f, mconf.o $(lxdialog), \
181 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/.mconf-cfg && echo $$$$cflags)))
183 $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/.mconf-cfg
185 # qconf: Used for the xconfig target based on Qt
187 qconf-cxxobjs := qconf.o
188 qconf-objs := zconf.tab.o
190 HOSTLDLIBS_qconf = $(shell . $(obj)/.qconf-cfg && echo $$libs)
191 HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/.qconf-cfg && echo $$cflags)
193 $(obj)/qconf.o: $(obj)/.qconf-cfg $(obj)/qconf.moc
195 quiet_cmd_moc = MOC $@
196 cmd_moc = $(shell . $(obj)/.qconf-cfg && echo $$moc) -i $< -o $@
198 $(obj)/%.moc: $(src)/%.h $(obj)/.qconf-cfg
201 # gconf: Used for the gconfig target based on GTK+
203 gconf-objs := gconf.o zconf.tab.o
205 HOSTLDLIBS_gconf = $(shell . $(obj)/.gconf-cfg && echo $$libs)
206 HOSTCFLAGS_gconf.o = $(shell . $(obj)/.gconf-cfg && echo $$cflags)
208 $(obj)/gconf.o: $(obj)/.gconf-cfg
210 $(obj)/zconf.tab.o: $(obj)/zconf.lex.c
212 # check if necessary packages are available, and configure build flags
213 define filechk_conf_cfg
214 $(CONFIG_SHELL) $(srctree)/scripts/kconfig/check-pkgconfig.sh; \
218 $(obj)/.%conf-cfg: $(src)/%conf-cfg.sh FORCE
219 $(call filechk,conf_cfg)
221 clean-files += .*conf-cfg