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1# SPDX-License-Identifier: GPL-2.0
2# ===========================================================================
3# Kernel configuration targets
4# These targets are used from top-level makefile
5
6PHONY += xconfig gconfig menuconfig config localmodconfig localyesconfig \
7 build_menuconfig build_nconfig build_gconfig build_xconfig
8
9ifdef KBUILD_KCONFIG
10Kconfig := $(KBUILD_KCONFIG)
11else
12Kconfig := Kconfig
13endif
14
15ifeq ($(quiet),silent_)
16silent := -s
17endif
18
19# We need this, in case the user has it in its environment
20unexport CONFIG_
21
22xconfig: $(obj)/qconf
23 $< $(silent) $(Kconfig)
24
25gconfig: $(obj)/gconf
26 $< $(silent) $(Kconfig)
27
28menuconfig: $(obj)/mconf
29 $< $(silent) $(Kconfig)
30
31config: $(obj)/conf
32 $< $(silent) --oldaskconfig $(Kconfig)
33
34nconfig: $(obj)/nconf
35 $< $(silent) $(Kconfig)
36
37build_menuconfig: $(obj)/mconf
38
39build_nconfig: $(obj)/nconf
40
41build_gconfig: $(obj)/gconf
42
43build_xconfig: $(obj)/qconf
44
45localyesconfig localmodconfig: $(obj)/conf
46 $(Q)$(PERL) $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
47 $(Q)if [ -f .config ]; then \
48 cmp -s .tmp.config .config || \
49 (mv -f .config .config.old.1; \
50 mv -f .tmp.config .config; \
51 $< $(silent) --oldconfig $(Kconfig); \
52 mv -f .config.old.1 .config.old) \
53 else \
54 mv -f .tmp.config .config; \
55 $< $(silent) --oldconfig $(Kconfig); \
56 fi
57 $(Q)rm -f .tmp.config
58
59# These targets map 1:1 to the commandline options of 'conf'
60#
61# Note:
62# syncconfig has become an internal implementation detail and is now
63# deprecated for external use
64simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
65 alldefconfig randconfig listnewconfig olddefconfig syncconfig \
66 helpnewconfig yes2modconfig mod2yesconfig
67
68PHONY += $(simple-targets)
69
70$(simple-targets): $(obj)/conf
71 $< $(silent) --$@ $(Kconfig)
72
73PHONY += savedefconfig defconfig
74
75savedefconfig: $(obj)/conf
76 $< $(silent) --$@=defconfig $(Kconfig)
77
78defconfig: $(obj)/conf
79ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
80 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
81 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
82else
83 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
84 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
85endif
86
87%_defconfig: $(obj)/conf
88 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
89
90configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
91
92%.config: $(obj)/conf
93 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
94 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
95 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
96
97PHONY += kvmconfig
98kvmconfig: kvm_guest.config
99 @echo >&2 "WARNING: 'make $@' will be removed after Linux 5.10"
100 @echo >&2 " Please use 'make $<' instead."
101
102PHONY += xenconfig
103xenconfig: xen.config
104 @echo >&2 "WARNING: 'make $@' will be removed after Linux 5.10"
105 @echo >&2 " Please use 'make $<' instead."
106
107PHONY += tinyconfig
108tinyconfig:
109 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
110
111# CHECK: -o cache_dir=<path> working?
112PHONY += testconfig
113testconfig: $(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)
117clean-files += tests/.cache
118
119# Help text used by make help
120help:
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 ' except those preserved by LMC_KEEP environment variable'
129 @echo ' localyesconfig - Update current config converting local mods to core'
130 @echo ' except those preserved by LMC_KEEP environment variable'
131 @echo ' defconfig - New config with default from ARCH supplied defconfig'
132 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
133 @echo ' allnoconfig - New config where all options are answered with no'
134 @echo ' allyesconfig - New config where all options are accepted with yes'
135 @echo ' allmodconfig - New config selecting modules when possible'
136 @echo ' alldefconfig - New config with all symbols set to default'
137 @echo ' randconfig - New config with random answer to all options'
138 @echo ' yes2modconfig - Change answers from yes to mod if possible'
139 @echo ' mod2yesconfig - Change answers from mod to yes if possible'
140 @echo ' listnewconfig - List new options'
141 @echo ' helpnewconfig - List new options and help text'
142 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their'
143 @echo ' default value without prompting'
144 @echo ' tinyconfig - Configure the tiniest possible kernel'
145 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'
146
147# ===========================================================================
148# object files used by all kconfig flavours
149common-objs := confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \
150 symbol.o util.o
151
152$(obj)/lexer.lex.o: $(obj)/parser.tab.h
153HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src)
154HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
155
156# conf: Used for defconfig, oldconfig and related targets
157hostprogs += conf
158conf-objs := conf.o $(common-objs)
159
160# nconf: Used for the nconfig target based on ncurses
161hostprogs += nconf
162nconf-objs := nconf.o nconf.gui.o $(common-objs)
163
164HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs)
165HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags)
166HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags)
167
168$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
169
170# mconf: Used for the menuconfig target based on lxdialog
171hostprogs += mconf
172lxdialog := $(addprefix lxdialog/, \
173 checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
174mconf-objs := mconf.o $(lxdialog) $(common-objs)
175
176HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
177$(foreach f, mconf.o $(lxdialog), \
178 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
179
180$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
181
182# qconf: Used for the xconfig target based on Qt
183hostprogs += qconf
184qconf-cxxobjs := qconf.o qconf-moc.o
185qconf-objs := images.o $(common-objs)
186
187HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs)
188HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags)
189HOSTCXXFLAGS_qconf-moc.o = $(shell . $(obj)/qconf-cfg && echo $$cflags)
190
191$(obj)/qconf.o: $(obj)/qconf-cfg
192
193quiet_cmd_moc = MOC $@
194 cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) $< -o $@
195
196$(obj)/qconf-moc.cc: $(src)/qconf.h $(obj)/qconf-cfg FORCE
197 $(call if_changed,moc)
198
199targets += qconf-moc.cc
200
201# gconf: Used for the gconfig target based on GTK+
202hostprogs += gconf
203gconf-objs := gconf.o images.o $(common-objs)
204
205HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs)
206HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags)
207
208$(obj)/gconf.o: $(obj)/gconf-cfg
209
210# check if necessary packages are available, and configure build flags
211filechk_conf_cfg = $(CONFIG_SHELL) $<
212
213$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
214 $(call filechk,conf_cfg)
215
216clean-files += *conf-cfg
1# SPDX-License-Identifier: GPL-2.0
2# ===========================================================================
3# Kernel configuration targets
4# These targets are used from top-level makefile
5
6ifdef KBUILD_KCONFIG
7Kconfig := $(KBUILD_KCONFIG)
8else
9Kconfig := Kconfig
10endif
11
12ifndef KBUILD_DEFCONFIG
13KBUILD_DEFCONFIG := defconfig
14endif
15
16ifeq ($(quiet),silent_)
17silent := -s
18endif
19
20export KCONFIG_DEFCONFIG_LIST :=
21ifndef cross_compiling
22kernel-release := $(shell uname -r)
23KCONFIG_DEFCONFIG_LIST += \
24 /lib/modules/$(kernel-release)/.config \
25 /etc/kernel-config \
26 /boot/config-$(kernel-release)
27endif
28KCONFIG_DEFCONFIG_LIST += arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)
29
30# We need this, in case the user has it in its environment
31unexport CONFIG_
32
33config-prog := conf
34menuconfig-prog := mconf
35nconfig-prog := nconf
36gconfig-prog := gconf
37xconfig-prog := qconf
38
39define config_rule
40PHONY += $(1)
41$(1): $(obj)/$($(1)-prog)
42 $(Q)$$< $(silent) $(Kconfig)
43
44PHONY += build_$(1)
45build_$(1): $(obj)/$($(1)-prog)
46endef
47
48$(foreach c, config menuconfig nconfig gconfig xconfig, $(eval $(call config_rule,$(c))))
49
50PHONY += localmodconfig localyesconfig
51localyesconfig 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) \
59 else \
60 mv -f .tmp.config .config; \
61 $< $(silent) --oldconfig $(Kconfig); \
62 fi
63 $(Q)rm -f .tmp.config
64
65# These targets map 1:1 to the commandline options of 'conf'
66#
67# Note:
68# syncconfig has become an internal implementation detail and is now
69# deprecated for external use
70simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
71 alldefconfig randconfig listnewconfig olddefconfig syncconfig \
72 helpnewconfig yes2modconfig mod2yesconfig
73
74PHONY += $(simple-targets)
75
76$(simple-targets): $(obj)/conf
77 $(Q)$< $(silent) --$@ $(Kconfig)
78
79PHONY += savedefconfig defconfig
80
81savedefconfig: $(obj)/conf
82 $(Q)$< $(silent) --$@=defconfig $(Kconfig)
83
84defconfig: $(obj)/conf
85ifneq ($(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) $(Kconfig)
88else
89 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
90 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
91endif
92
93%_defconfig: $(obj)/conf
94 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
95
96configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
97
98%.config: $(obj)/conf
99 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
100 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
101 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
102
103PHONY += tinyconfig
104tinyconfig:
105 $(Q)KCONFIG_ALLCONFIG=kernel/configs/tiny-base.config $(MAKE) -f $(srctree)/Makefile allnoconfig
106 $(Q)$(MAKE) -f $(srctree)/Makefile tiny.config
107
108# CHECK: -o cache_dir=<path> working?
109PHONY += testconfig
110testconfig: $(obj)/conf
111 $(Q)$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
112 -o cache_dir=$(abspath $(obj)/tests/.cache) \
113 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
114clean-files += tests/.cache
115
116# Help text used by make help
117help:
118 @echo ' config - Update current config utilising a line-oriented program'
119 @echo ' nconfig - Update current config utilising a ncurses menu based program'
120 @echo ' menuconfig - Update current config utilising a menu based program'
121 @echo ' xconfig - Update current config utilising a Qt based front-end'
122 @echo ' gconfig - Update current config utilising a GTK+ based front-end'
123 @echo ' oldconfig - Update current config utilising a provided .config as base'
124 @echo ' localmodconfig - Update current config disabling modules not loaded'
125 @echo ' except those preserved by LMC_KEEP environment variable'
126 @echo ' localyesconfig - Update current config converting local mods to core'
127 @echo ' except those preserved by LMC_KEEP environment variable'
128 @echo ' defconfig - New config with default from ARCH supplied defconfig'
129 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
130 @echo ' allnoconfig - New config where all options are answered with no'
131 @echo ' allyesconfig - New config where all options are accepted with yes'
132 @echo ' allmodconfig - New config selecting modules when possible'
133 @echo ' alldefconfig - New config with all symbols set to default'
134 @echo ' randconfig - New config with random answer to all options'
135 @echo ' yes2modconfig - Change answers from yes to mod if possible'
136 @echo ' mod2yesconfig - Change answers from mod to yes if possible'
137 @echo ' listnewconfig - List new options'
138 @echo ' helpnewconfig - List new options and help text'
139 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their'
140 @echo ' default value without prompting'
141 @echo ' tinyconfig - Configure the tiniest possible kernel'
142 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'
143
144# ===========================================================================
145# object files used by all kconfig flavours
146common-objs := confdata.o expr.o lexer.lex.o menu.o parser.tab.o \
147 preprocess.o symbol.o util.o
148
149$(obj)/lexer.lex.o: $(obj)/parser.tab.h
150HOSTCFLAGS_lexer.lex.o := -I $(srctree)/$(src)
151HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
152
153# conf: Used for defconfig, oldconfig and related targets
154hostprogs += conf
155conf-objs := conf.o $(common-objs)
156
157# nconf: Used for the nconfig target based on ncurses
158hostprogs += nconf
159nconf-objs := nconf.o nconf.gui.o $(common-objs)
160
161HOSTLDLIBS_nconf = $(shell . $(obj)/nconf-cfg && echo $$libs)
162HOSTCFLAGS_nconf.o = $(shell . $(obj)/nconf-cfg && echo $$cflags)
163HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/nconf-cfg && echo $$cflags)
164
165$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
166
167# mconf: Used for the menuconfig target based on lxdialog
168hostprogs += mconf
169lxdialog := $(addprefix lxdialog/, \
170 checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
171mconf-objs := mconf.o $(lxdialog) $(common-objs)
172
173HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
174$(foreach f, mconf.o $(lxdialog), \
175 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
176
177$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
178
179# qconf: Used for the xconfig target based on Qt
180hostprogs += qconf
181qconf-cxxobjs := qconf.o qconf-moc.o
182qconf-objs := images.o $(common-objs)
183
184HOSTLDLIBS_qconf = $(shell . $(obj)/qconf-cfg && echo $$libs)
185HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/qconf-cfg && echo $$cflags)
186HOSTCXXFLAGS_qconf-moc.o = $(shell . $(obj)/qconf-cfg && echo $$cflags)
187
188$(obj)/qconf.o: $(obj)/qconf-cfg
189
190quiet_cmd_moc = MOC $@
191 cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) $< -o $@
192
193$(obj)/qconf-moc.cc: $(src)/qconf.h $(obj)/qconf-cfg FORCE
194 $(call if_changed,moc)
195
196targets += qconf-moc.cc
197
198# gconf: Used for the gconfig target based on GTK+
199hostprogs += gconf
200gconf-objs := gconf.o images.o $(common-objs)
201
202HOSTLDLIBS_gconf = $(shell . $(obj)/gconf-cfg && echo $$libs)
203HOSTCFLAGS_gconf.o = $(shell . $(obj)/gconf-cfg && echo $$cflags)
204
205$(obj)/gconf.o: $(obj)/gconf-cfg
206
207# check if necessary packages are available, and configure build flags
208filechk_conf_cfg = $(CONFIG_SHELL) $<
209
210$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
211 $(call filechk,conf_cfg)
212
213clean-files += *conf-cfg