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 localmodconfig localyesconfig \
   7         build_menuconfig build_nconfig build_gconfig build_xconfig
   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 build_menuconfig: $(obj)/mconf
  38
  39 build_nconfig: $(obj)/nconf
  40
  41 build_gconfig: $(obj)/gconf
  42
  43 build_xconfig: $(obj)/qconf
  44
  45 localyesconfig 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
  64 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
  65         alldefconfig randconfig listnewconfig olddefconfig syncconfig \
  66         helpnewconfig yes2modconfig mod2yesconfig
  67
  68 PHONY += $(simple-targets)
  69
  70 $(simple-targets): $(obj)/conf
  71         $< $(silent) --$@ $(Kconfig)
  72
  73 PHONY += savedefconfig defconfig
  74
  75 savedefconfig: $(obj)/conf
  76         $< $(silent) --$@=defconfig $(Kconfig)
  77
  78 defconfig: $(obj)/conf
  79 ifneq ($(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) $(Kconfig)
  82 else
  83         @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
  84         $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
  85 endif
  86
  87 %_defconfig: $(obj)/conf
  88         $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
  89
  90 configfiles=$(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
  97 PHONY += kvmconfig
  98 kvmconfig: kvm_guest.config
  99         @echo >&2 "WARNING: 'make $@' will be removed after Linux 5.10"
 100         @echo >&2 "         Please use 'make $<' instead."
 101
 102 PHONY += xenconfig
 103 xenconfig: xen.config
 104         @echo >&2 "WARNING: 'make $@' will be removed after Linux 5.10"
 105         @echo >&2 "         Please use 'make $<' instead."
 106
 107 PHONY += tinyconfig
 108 tinyconfig:
 109         $(Q)$(MAKE) -f $(srctree)/Makefile allnoconfig tiny.config
 110
 111 # CHECK: -o cache_dir=<path> working?
 112 PHONY += testconfig
 113 testconfig: $(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)
 117 clean-files += tests/.cache
 118
 119 # Help text used by make help
 120 help:
 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
 149 common-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
 153 HOSTCFLAGS_lexer.lex.o  := -I $(srctree)/$(src)
 154 HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
 155
 156 # conf: Used for defconfig, oldconfig and related targets
 157 hostprogs       += conf
 158 conf-objs       := conf.o $(common-objs)
 159
 160 # nconf: Used for the nconfig target based on ncurses
 161 hostprogs       += nconf
 162 nconf-objs      := nconf.o nconf.gui.o $(common-objs)
 163
 164 HOSTLDLIBS_nconf        = $(shell . $(obj)/nconf-cfg && echo $$libs)
 165 HOSTCFLAGS_nconf.o      = $(shell . $(obj)/nconf-cfg && echo $$cflags)
 166 HOSTCFLAGS_nconf.gui.o  = $(shell . $(obj)/nconf-cfg && echo $$cflags)
 167
 168 $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
 169
 170 # mconf: Used for the menuconfig target based on lxdialog
 171 hostprogs       += mconf
 172 lxdialog        := $(addprefix lxdialog/, \
 173                      checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
 174 mconf-objs      := mconf.o $(lxdialog) $(common-objs)
 175
 176 HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
 177 $(foreach f, mconf.o $(lxdialog), \
 178   $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
 179
 180 $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
 181
 182 # qconf: Used for the xconfig target based on Qt
 183 hostprogs       += qconf
 184 qconf-cxxobjs   := qconf.o
 185 qconf-objs      := images.o $(common-objs)
 186
 187 HOSTLDLIBS_qconf        = $(shell . $(obj)/qconf-cfg && echo $$libs)
 188 HOSTCXXFLAGS_qconf.o    = $(shell . $(obj)/qconf-cfg && echo $$cflags)
 189
 190 $(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
 191
 192 quiet_cmd_moc = MOC     $@
 193       cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
 194
 195 $(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
 196         $(call cmd,moc)
 197
 198 # gconf: Used for the gconfig target based on GTK+
 199 hostprogs       += gconf
 200 gconf-objs      := gconf.o images.o $(common-objs)
 201
 202 HOSTLDLIBS_gconf    = $(shell . $(obj)/gconf-cfg && echo $$libs)
 203 HOSTCFLAGS_gconf.o  = $(shell . $(obj)/gconf-cfg && echo $$cflags)
 204
 205 $(obj)/gconf.o: $(obj)/gconf-cfg
 206
 207 # check if necessary packages are available, and configure build flags
 208 filechk_conf_cfg = $(CONFIG_SHELL) $<
 209
 210 $(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
 211         $(call filechk,conf_cfg)
 212
 213 clean-files += *conf-cfg