scripts/kconfig/Makefile

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