1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 # ============================================ 2 # ===========================================================================
3 # Kernel configuration targets 3 # Kernel configuration targets
4 # These targets are used from top-level makefi 4 # These targets are used from top-level makefile
5 5
>> 6 PHONY += xconfig gconfig menuconfig config localmodconfig localyesconfig \
>> 7 build_menuconfig build_nconfig build_gconfig build_xconfig
>> 8
6 ifdef KBUILD_KCONFIG 9 ifdef KBUILD_KCONFIG
7 Kconfig := $(KBUILD_KCONFIG) 10 Kconfig := $(KBUILD_KCONFIG)
8 else 11 else
9 Kconfig := Kconfig 12 Kconfig := Kconfig
10 endif 13 endif
11 14
12 ifndef KBUILD_DEFCONFIG <<
13 KBUILD_DEFCONFIG := defconfig <<
14 endif <<
15 <<
16 ifeq ($(quiet),silent_) 15 ifeq ($(quiet),silent_)
17 silent := -s 16 silent := -s
18 endif 17 endif
19 18
20 export KCONFIG_DEFCONFIG_LIST := !! 19 # We need this, in case the user has it in its environment
21 ifndef cross_compiling !! 20 unexport CONFIG_
22 kernel-release := $(shell uname -r) <<
23 KCONFIG_DEFCONFIG_LIST += \ <<
24 /lib/modules/$(kernel-release)/.config <<
25 /etc/kernel-config \ <<
26 /boot/config-$(kernel-release) <<
27 endif <<
28 KCONFIG_DEFCONFIG_LIST += arch/$(SRCARCH)/conf <<
29 21
30 ifneq ($(findstring c, $(KBUILD_EXTRA_WARN)),) !! 22 xconfig: $(obj)/qconf
31 export KCONFIG_WARN_UNKNOWN_SYMBOLS=1 !! 23 $< $(silent) $(Kconfig)
32 endif <<
33 24
34 ifneq ($(findstring e, $(KBUILD_EXTRA_WARN)),) !! 25 gconfig: $(obj)/gconf
35 export KCONFIG_WERROR=1 !! 26 $< $(silent) $(Kconfig)
36 endif <<
37 27
38 # We need this, in case the user has it in its !! 28 menuconfig: $(obj)/mconf
39 unexport CONFIG_ !! 29 $< $(silent) $(Kconfig)
40 30
41 config-prog := conf !! 31 config: $(obj)/conf
42 menuconfig-prog := mconf !! 32 $< $(silent) --oldaskconfig $(Kconfig)
43 nconfig-prog := nconf <<
44 gconfig-prog := gconf <<
45 xconfig-prog := qconf <<
46 <<
47 define config_rule <<
48 PHONY += $(1) <<
49 $(1): $(obj)/$($(1)-prog) <<
50 $(Q)$$< $(silent) $(Kconfig) <<
51 33
52 PHONY += build_$(1) !! 34 nconfig: $(obj)/nconf
53 build_$(1): $(obj)/$($(1)-prog) !! 35 $< $(silent) $(Kconfig)
54 endef !! 36
>> 37 build_menuconfig: $(obj)/mconf
>> 38
>> 39 build_nconfig: $(obj)/nconf
55 40
56 $(foreach c, config menuconfig nconfig gconfig !! 41 build_gconfig: $(obj)/gconf
>> 42
>> 43 build_xconfig: $(obj)/qconf
57 44
58 PHONY += localmodconfig localyesconfig <<
59 localyesconfig localmodconfig: $(obj)/conf 45 localyesconfig localmodconfig: $(obj)/conf
60 $(Q)$(PERL) $(src)/streamline_config.p !! 46 $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
61 $(Q)if [ -f .config ]; then !! 47 $(Q)if [ -f .config ]; then \
62 cmp -s .tmp.config .config || !! 48 cmp -s .tmp.config .config || \
63 (mv -f .config .config.old.1; !! 49 (mv -f .config .config.old.1; \
64 mv -f .tmp.config .config; !! 50 mv -f .tmp.config .config; \
65 $< $(silent) --oldconfig $(Kc !! 51 $< $(silent) --oldconfig $(Kconfig); \
66 mv -f .config.old.1 .config.o !! 52 mv -f .config.old.1 .config.old) \
67 else !! 53 else \
68 mv -f .tmp.config .config; !! 54 mv -f .tmp.config .config; \
69 $< $(silent) --oldconfig $(Kco !! 55 $< $(silent) --oldconfig $(Kconfig); \
70 fi 56 fi
71 $(Q)rm -f .tmp.config 57 $(Q)rm -f .tmp.config
72 58
73 # These targets map 1:1 to the commandline opt 59 # These targets map 1:1 to the commandline options of 'conf'
74 # 60 #
75 # Note: 61 # Note:
76 # syncconfig has become an internal implement 62 # syncconfig has become an internal implementation detail and is now
77 # deprecated for external use 63 # deprecated for external use
78 simple-targets := oldconfig allnoconfig allyes 64 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
79 alldefconfig randconfig listnewconfig !! 65 alldefconfig randconfig listnewconfig olddefconfig syncconfig
80 helpnewconfig yes2modconfig mod2yescon <<
81 <<
82 PHONY += $(simple-targets) 66 PHONY += $(simple-targets)
83 67
84 $(simple-targets): $(obj)/conf 68 $(simple-targets): $(obj)/conf
85 $(Q)$< $(silent) --$@ $(Kconfig) !! 69 $< $(silent) --$@ $(Kconfig)
86 70
87 PHONY += savedefconfig defconfig !! 71 PHONY += oldnoconfig silentoldconfig savedefconfig defconfig
>> 72
>> 73 # oldnoconfig is an alias of olddefconfig, because people already are dependent
>> 74 # on its behavior (sets new symbols to their default value but not 'n') with the
>> 75 # counter-intuitive name.
>> 76 oldnoconfig: olddefconfig
>> 77 @echo " WARNING: \"oldnoconfig\" target will be removed after Linux 4.19"
>> 78 @echo " Please use \"olddefconfig\" instead, which is an alias."
>> 79
>> 80 # We do not expect manual invokcation of "silentoldcofig" (or "syncconfig").
>> 81 silentoldconfig: syncconfig
>> 82 @echo " WARNING: \"silentoldconfig\" has been renamed to \"syncconfig\""
>> 83 @echo " and is now an internal implementation detail."
>> 84 @echo " What you want is probably \"oldconfig\"."
>> 85 @echo " \"silentoldconfig\" will be removed after Linux 4.19"
88 86
89 savedefconfig: $(obj)/conf 87 savedefconfig: $(obj)/conf
90 $(Q)$< $(silent) --$@=defconfig $(Kcon !! 88 $< $(silent) --$@=defconfig $(Kconfig)
91 89
92 defconfig: $(obj)/conf 90 defconfig: $(obj)/conf
>> 91 ifeq ($(KBUILD_DEFCONFIG),)
>> 92 $< $(silent) --defconfig $(Kconfig)
>> 93 else
93 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/c 94 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
94 @$(kecho) "*** Default configuration i 95 @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
95 $(Q)$< $(silent) --defconfig=arch/$(SR 96 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
96 else 97 else
97 @$(kecho) "*** Default configuration i 98 @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
98 $(Q)$(MAKE) -f $(srctree)/Makefile $(K 99 $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
99 endif 100 endif
>> 101 endif
100 102
101 %_defconfig: $(obj)/conf 103 %_defconfig: $(obj)/conf
102 $(Q)$< $(silent) --defconfig=arch/$(SR 104 $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
103 105
104 configfiles = $(wildcard $(srctree)/kernel/con !! 106 configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
105 all-config-fragments = $(call configfiles,*.co <<
106 config-fragments = $(call configfiles,$@) <<
107 107
108 %.config: $(obj)/conf 108 %.config: $(obj)/conf
109 $(if $(config-fragments),, $(error $@ !! 109 $(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
110 $(Q)$(CONFIG_SHELL) $(srctree)/scripts !! 110 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
111 $(Q)$(MAKE) -f $(srctree)/Makefile old !! 111 +$(Q)yes "" | $(MAKE) -f $(srctree)/Makefile oldconfig
>> 112
>> 113 PHONY += kvmconfig
>> 114 kvmconfig: kvm_guest.config
>> 115 @:
>> 116
>> 117 PHONY += xenconfig
>> 118 xenconfig: xen.config
>> 119 @:
112 120
113 PHONY += tinyconfig 121 PHONY += tinyconfig
114 tinyconfig: 122 tinyconfig:
115 $(Q)KCONFIG_ALLCONFIG=kernel/configs/t !! 123 $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
116 $(Q)$(MAKE) -f $(srctree)/Makefile tin <<
117 124
118 # CHECK: -o cache_dir=<path> working? 125 # CHECK: -o cache_dir=<path> working?
119 PHONY += testconfig 126 PHONY += testconfig
120 testconfig: $(obj)/conf 127 testconfig: $(obj)/conf
121 $(Q)$(PYTHON3) -B -m pytest $(src)/tes !! 128 $(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
122 -o cache_dir=$(abspath $(obj)/tests/.c 129 -o cache_dir=$(abspath $(obj)/tests/.cache) \
123 $(if $(findstring 1,$(KBUILD_VERBOSE)) 130 $(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
124 clean-files += tests/.cache !! 131 clean-dirs += tests/.cache
125 132
126 # Help text used by make help 133 # Help text used by make help
127 help: 134 help:
128 @echo 'Configuration targets:' <<
129 @echo ' config - Update cur 135 @echo ' config - Update current config utilising a line-oriented program'
130 @echo ' nconfig - Update cur 136 @echo ' nconfig - Update current config utilising a ncurses menu based program'
131 @echo ' menuconfig - Update cur 137 @echo ' menuconfig - Update current config utilising a menu based program'
132 @echo ' xconfig - Update cur 138 @echo ' xconfig - Update current config utilising a Qt based front-end'
133 @echo ' gconfig - Update cur 139 @echo ' gconfig - Update current config utilising a GTK+ based front-end'
134 @echo ' oldconfig - Update cur 140 @echo ' oldconfig - Update current config utilising a provided .config as base'
135 @echo ' localmodconfig - Update cur 141 @echo ' localmodconfig - Update current config disabling modules not loaded'
136 @echo ' except tho <<
137 @echo ' localyesconfig - Update cur 142 @echo ' localyesconfig - Update current config converting local mods to core'
138 @echo ' except tho <<
139 @echo ' defconfig - New config 143 @echo ' defconfig - New config with default from ARCH supplied defconfig'
140 @echo ' savedefconfig - Save curre 144 @echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
141 @echo ' allnoconfig - New config 145 @echo ' allnoconfig - New config where all options are answered with no'
142 @echo ' allyesconfig - New config 146 @echo ' allyesconfig - New config where all options are accepted with yes'
143 @echo ' allmodconfig - New config 147 @echo ' allmodconfig - New config selecting modules when possible'
144 @echo ' alldefconfig - New config 148 @echo ' alldefconfig - New config with all symbols set to default'
145 @echo ' randconfig - New config 149 @echo ' randconfig - New config with random answer to all options'
146 @echo ' yes2modconfig - Change ans <<
147 @echo ' mod2yesconfig - Change ans <<
148 @echo ' mod2noconfig - Change ans <<
149 @echo ' listnewconfig - List new o 150 @echo ' listnewconfig - List new options'
150 @echo ' helpnewconfig - List new o <<
151 @echo ' olddefconfig - Same as ol 151 @echo ' olddefconfig - Same as oldconfig but sets new symbols to their'
152 @echo ' default va 152 @echo ' default value without prompting'
>> 153 @echo ' kvmconfig - Enable additional options for kvm guest kernel support'
>> 154 @echo ' xenconfig - Enable additional options for xen dom0 and guest kernel support'
153 @echo ' tinyconfig - Configure 155 @echo ' tinyconfig - Configure the tiniest possible kernel'
154 @echo ' testconfig - Run Kconfi 156 @echo ' testconfig - Run Kconfig unit tests (requires python3 and pytest)'
155 @echo '' <<
156 @echo 'Configuration topic targets:' <<
157 @$(foreach f, $(all-config-fragments), <<
158 if help=$$(grep -m1 '^# Help: <<
159 printf ' %-25s - %s\n <<
160 fi;) <<
161 157
162 # ============================================ 158 # ===========================================================================
>> 159 # Shared Makefile for the various kconfig executables:
>> 160 # conf: Used for defconfig, oldconfig and related targets
163 # object files used by all kconfig flavours 161 # object files used by all kconfig flavours
164 common-objs := confdata.o expr.o lexer.lex <<
165 preprocess.o symbol.o util. <<
166 162
167 $(obj)/lexer.lex.o: $(obj)/parser.tab.h !! 163 conf-objs := conf.o zconf.tab.o
168 HOSTCFLAGS_lexer.lex.o := -I $(src) !! 164
169 HOSTCFLAGS_parser.tab.o := -I $(src) !! 165 hostprogs-y := conf
170 !! 166
171 # conf: Used for defconfig, oldconfig and rela !! 167 targets += zconf.lex.c
172 hostprogs += conf !! 168
173 conf-objs := conf.o $(common-objs) !! 169 # generated files seem to need this to find local include files
>> 170 HOSTCFLAGS_zconf.lex.o := -I$(src)
>> 171 HOSTCFLAGS_zconf.tab.o := -I$(src)
174 172
175 # nconf: Used for the nconfig target based on 173 # nconf: Used for the nconfig target based on ncurses
176 hostprogs += nconf !! 174 hostprogs-y += nconf
177 nconf-objs := nconf.o nconf.gui.o mnconf- !! 175 nconf-objs := nconf.o zconf.tab.o nconf.gui.o
178 176
179 HOSTLDLIBS_nconf = $(call read-file, $(o !! 177 HOSTLDLIBS_nconf = $(shell . $(obj)/.nconf-cfg && echo $$libs)
180 HOSTCFLAGS_nconf.o = $(call read-file, $(o !! 178 HOSTCFLAGS_nconf.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags)
181 HOSTCFLAGS_nconf.gui.o = $(call read-file, $(o !! 179 HOSTCFLAGS_nconf.gui.o = $(shell . $(obj)/.nconf-cfg && echo $$cflags)
182 180
183 $(obj)/nconf: | $(obj)/nconf-libs !! 181 $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/.nconf-cfg
184 $(obj)/nconf.o $(obj)/nconf.gui.o: | $(obj)/nc <<
185 182
186 # mconf: Used for the menuconfig target based 183 # mconf: Used for the menuconfig target based on lxdialog
187 hostprogs += mconf !! 184 hostprogs-y += mconf
188 lxdialog := $(addprefix lxdialog/, \ !! 185 lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o
189 checklist.o inputbox.o me !! 186 mconf-objs := mconf.o zconf.tab.o $(addprefix lxdialog/, $(lxdialog))
190 mconf-objs := mconf.o $(lxdialog) mnconf- <<
191 187
192 HOSTLDLIBS_mconf = $(call read-file, $(obj)/mc !! 188 HOSTLDLIBS_mconf = $(shell . $(obj)/.mconf-cfg && echo $$libs)
193 $(foreach f, mconf.o $(lxdialog), \ 189 $(foreach f, mconf.o $(lxdialog), \
194 $(eval HOSTCFLAGS_$f = $$(call read-file, $( !! 190 $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/.mconf-cfg && echo $$$$cflags)))
195 191
196 $(obj)/mconf: | $(obj)/mconf-libs !! 192 $(obj)/mconf.o: $(obj)/.mconf-cfg
197 $(addprefix $(obj)/, mconf.o $(lxdialog)): | $ !! 193 $(addprefix $(obj)/lxdialog/, $(lxdialog)): $(obj)/.mconf-cfg
198 194
199 # qconf: Used for the xconfig target based on 195 # qconf: Used for the xconfig target based on Qt
200 hostprogs += qconf !! 196 hostprogs-y += qconf
201 qconf-cxxobjs := qconf.o qconf-moc.o !! 197 qconf-cxxobjs := qconf.o
202 qconf-objs := images.o $(common-objs) !! 198 qconf-objs := zconf.tab.o
203 <<
204 HOSTLDLIBS_qconf = $(call read-file, $ <<
205 HOSTCXXFLAGS_qconf.o = -std=c++11 -fPIC $( <<
206 HOSTCXXFLAGS_qconf-moc.o = -std=c++11 -fPIC $( <<
207 $(obj)/qconf: | $(obj)/qconf-libs <<
208 $(obj)/qconf.o $(obj)/qconf-moc.o: | $(obj)/qc <<
209 199
210 quiet_cmd_moc = MOC $@ !! 200 HOSTLDLIBS_qconf = $(shell . $(obj)/.qconf-cfg && echo $$libs)
211 cmd_moc = $(call read-file, $(obj)/qconf !! 201 HOSTCXXFLAGS_qconf.o = $(shell . $(obj)/.qconf-cfg && echo $$cflags)
>> 202
>> 203 $(obj)/qconf.o: $(obj)/.qconf-cfg $(obj)/qconf.moc
212 204
213 $(obj)/qconf-moc.cc: $(src)/qconf.h FORCE | $( !! 205 quiet_cmd_moc = MOC $@
214 $(call if_changed,moc) !! 206 cmd_moc = $(shell . $(obj)/.qconf-cfg && echo $$moc) -i $< -o $@
215 207
216 targets += qconf-moc.cc !! 208 $(obj)/%.moc: $(src)/%.h $(obj)/.qconf-cfg
>> 209 $(call cmd,moc)
217 210
218 # gconf: Used for the gconfig target based on 211 # gconf: Used for the gconfig target based on GTK+
219 hostprogs += gconf !! 212 hostprogs-y += gconf
220 gconf-objs := gconf.o images.o $(common-o !! 213 gconf-objs := gconf.o zconf.tab.o
>> 214
>> 215 HOSTLDLIBS_gconf = $(shell . $(obj)/.gconf-cfg && echo $$libs)
>> 216 HOSTCFLAGS_gconf.o = $(shell . $(obj)/.gconf-cfg && echo $$cflags)
221 217
222 HOSTLDLIBS_gconf = $(call read-file, $(obj)/ !! 218 $(obj)/gconf.o: $(obj)/.gconf-cfg
223 HOSTCFLAGS_gconf.o = $(call read-file, $(obj)/ <<
224 219
225 $(obj)/gconf: | $(obj)/gconf-libs !! 220 $(obj)/zconf.tab.o: $(obj)/zconf.lex.c
226 $(obj)/gconf.o: | $(obj)/gconf-cflags <<
227 221
228 # check if necessary packages are available, a 222 # check if necessary packages are available, and configure build flags
229 cmd_conf_cfg = $< $(addprefix $(obj)/$*conf-, !! 223 define filechk_conf_cfg
>> 224 $(CONFIG_SHELL) $<
>> 225 endef
230 226
231 $(obj)/%conf-cflags $(obj)/%conf-libs $(obj)/% !! 227 $(obj)/.%conf-cfg: $(src)/%conf-cfg.sh FORCE
232 $(call cmd,conf_cfg) !! 228 $(call filechk,conf_cfg)
233 229
234 clean-files += *conf-cflags *conf-libs *conf-b !! 230 clean-files += .*conf-cfg
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