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 # Linux has defconfig files in arch/$(SRCARCH)/configs/,
11 # on the other hand, U-Boot does in configs/.
12 # Set SRCARCH to .. fake this Makefile.
16 Kconfig := $(KBUILD_KCONFIG)
21 ifeq ($(quiet),silent_)
25 # We need this, in case the user has it in its environment
29 $< $(silent) $(Kconfig)
32 $< $(silent) $(Kconfig)
34 menuconfig: $(obj)/mconf
35 $< $(silent) $(Kconfig)
38 $< $(silent) --oldaskconfig $(Kconfig)
41 $< $(silent) $(Kconfig)
43 build_menuconfig: $(obj)/mconf
45 build_nconfig: $(obj)/nconf
47 build_gconfig: $(obj)/gconf
49 build_xconfig: $(obj)/qconf
51 localyesconfig localmodconfig: $(obj)/conf
52 $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
53 $(Q)if [ -f .config ]; then \
54 cmp -s .tmp.config .config || \
55 (mv -f .config .config.old.1; \
56 mv -f .tmp.config .config; \
57 $< $(silent) --oldconfig $(Kconfig); \
58 mv -f .config.old.1 .config.old) \
60 mv -f .tmp.config .config; \
61 $< $(silent) --oldconfig $(Kconfig); \
65 # These targets map 1:1 to the commandline options of 'conf'
68 # syncconfig has become an internal implementation detail and is now
69 # deprecated for external use
70 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
71 alldefconfig randconfig listnewconfig olddefconfig syncconfig
72 PHONY += $(simple-targets)
74 $(simple-targets): $(obj)/conf
75 $< $(silent) --$@ $(Kconfig)
77 PHONY += oldnoconfig silentoldconfig savedefconfig defconfig
79 # oldnoconfig is an alias of olddefconfig, because people already are dependent
80 # on its behavior (sets new symbols to their default value but not 'n') with the
81 # counter-intuitive name.
82 oldnoconfig: olddefconfig
83 @echo " WARNING: \"oldnoconfig\" target will be removed after Linux 4.19"
84 @echo " Please use \"olddefconfig\" instead, which is an alias."
86 # We do not expect manual invokcation of "silentoldcofig" (or "syncconfig").
87 silentoldconfig: syncconfig
88 @echo " WARNING: \"silentoldconfig\" has been renamed to \"syncconfig\""
89 @echo " and is now an internal implementation detail."
90 @echo " What you want is probably \"oldconfig\"."
91 @echo " \"silentoldconfig\" will be removed after Linux 4.19"
93 savedefconfig: $(obj)/conf
94 $< $(silent) --$@=defconfig $(Kconfig)
96 defconfig: $(obj)/conf
97 ifeq ($(KBUILD_DEFCONFIG),)
98 $< $(silent) --defconfig $(Kconfig)
100 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
101 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
102 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
104 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
105 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
109 %_defconfig: $(obj)/conf
110 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
112 # Added for U-Boot (backward compatibility)
113 %_config: %_defconfig
116 configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
118 %.config: $(obj)/conf
119 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
120 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
121 +$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
124 kvmconfig: kvm_guest.config
128 xenconfig: xen.config
133 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
135 # CHECK: -o cache_dir=<path> working?
137 testconfig: $(obj)/conf
138 $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
139 -o cache_dir=$(abspath $(obj)/tests/.cache) \
140 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
141 clean-dirs += tests/.cache
143 # Help text used by make help
145 @echo ' config - Update current config utilising a line-oriented program'
146 @echo ' nconfig - Update current config utilising a ncurses menu based program'
147 @echo ' menuconfig - Update current config utilising a menu based program'
148 @echo ' xconfig - Update current config utilising a Qt based front-end'
149 @echo ' gconfig - Update current config utilising a GTK+ based front-end'
150 @echo ' oldconfig - Update current config utilising a provided .config as base'
151 @echo ' localmodconfig - Update current config disabling modules not loaded'
152 @echo ' localyesconfig - Update current config converting local mods to core'
153 @echo ' defconfig - New config with default from ARCH supplied defconfig'
154 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
155 @echo ' allnoconfig - New config where all options are answered with no'
156 @echo ' allyesconfig - New config where all options are accepted with yes'
157 @echo ' allmodconfig - New config selecting modules when possible'
158 @echo ' alldefconfig - New config with all symbols set to default'
159 @echo ' randconfig - New config with random answer to all options'
160 @echo ' listnewconfig - List new options'
161 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their'
162 @echo ' default value without prompting'
163 # @echo ' kvmconfig - Enable additional options for kvm guest kernel support'
164 # @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support'
165 # @echo ' tinyconfig - Configure the tiniest possible kernel'
166 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'
168 # ===========================================================================
169 # Shared Makefile for the various kconfig executables:
170 # conf: Used for defconfig, oldconfig and related targets
171 # object files used by all kconfig flavours
173 conf-objs := conf.o zconf.tab.o
177 targets += zconf.lex.c
179 # generated files seem to need this to find local include files
180 HOSTCFLAGS_zconf.lex.o := -I$(src)
181 HOSTCFLAGS_zconf.tab.o := -I$(src)
183 # nconf: Used for the nconfig target based on ncurses
185 nconf-objs := nconf.o zconf.tab.o nconf.gui.o
187 HOSTLDLIBS_nconf = $(shell . $(obj)/.nconf-cfg && echo $$libs)
188 HOSTCFLAGS_nconf.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags)
189 HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags)
191 $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/.nconf-cfg
193 # mconf: Used for the menuconfig target based on lxdialog
195 lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o
196 mconf-objs := mconf.o zconf.tab.o $(addprefix lxdialog/, $(lxdialog))
198 HOSTLDLIBS_mconf = $(shell . $(obj)/.mconf-cfg && echo $$libs)
199 $(foreach f, mconf.o $(lxdialog), \
200 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/.mconf-cfg && echo $$$$cflags)))
202 $(obj)/mconf.o: $(obj)/.mconf-cfg
203 $(addprefix $(obj)/lxdialog/, $(lxdialog)): $(obj)/.mconf-cfg
205 # qconf: Used for the xconfig target based on Qt
207 qconf-cxxobjs := qconf.o
208 qconf-objs := zconf.tab.o
210 HOSTLDLIBS_qconf = $(shell . $(obj)/.qconf-cfg && echo $$libs)
211 HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/.qconf-cfg && echo $$cflags)
213 $(obj)/qconf.o: $(obj)/.qconf-cfg $(obj)/qconf.moc
215 quiet_cmd_moc = MOC $@
216 cmd_moc = $(shell . $(obj)/.qconf-cfg && echo $$moc) -i $< -o $@
218 $(obj)/%.moc: $(src)/%.h $(obj)/.qconf-cfg
221 # gconf: Used for the gconfig target based on GTK+
223 gconf-objs := gconf.o zconf.tab.o
225 HOSTLDLIBS_gconf = $(shell . $(obj)/.gconf-cfg && echo $$libs)
226 HOSTCFLAGS_gconf.o = $(shell . $(obj)/.gconf-cfg && echo $$cflags)
228 $(obj)/gconf.o: $(obj)/.gconf-cfg
230 $(obj)/zconf.tab.o: $(obj)/zconf.lex.c
232 # check if necessary packages are available, and configure build flags
233 define filechk_conf_cfg
237 $(obj)/.%conf-cfg: $(src)/%conf-cfg.sh FORCE
238 $(call filechk,conf_cfg)
240 clean-files += .*conf-cfg