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 := $(KBUILD_KCONFIG)
  11 else
  12 Kconfig := Kconfig
  13 endif
  14
  15 ifndef KBUILD_DEFCONFIG
  16 KBUILD_DEFCONFIG := defconfig
  17 endif
  18
  19 ifeq ($(quiet),silent_)
  20 silent := -s
  21 endif
  22
  23 # We need this, in case the user has it in its environment
  24 unexport CONFIG_
  25
  26 xconfig: $(obj)/qconf
  27         $< $(silent) $(Kconfig)
  28
  29 gconfig: $(obj)/gconf
  30         $< $(silent) $(Kconfig)
  31
  32 menuconfig: $(obj)/mconf
  33         $< $(silent) $(Kconfig)
  34
  35 config: $(obj)/conf
  36         $< $(silent) --oldaskconfig $(Kconfig)
  37
  38 nconfig: $(obj)/nconf
  39         $< $(silent) $(Kconfig)
  40
  41 build_menuconfig: $(obj)/mconf
  42
  43 build_nconfig: $(obj)/nconf
  44
  45 build_gconfig: $(obj)/gconf
  46
  47 build_xconfig: $(obj)/qconf
  48
  49 localyesconfig localmodconfig: $(obj)/conf
  50         $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
  51         $(Q)if [ -f .config ]; then                                     \
  52                         cmp -s .tmp.config .config ||                   \
  53                         (mv -f .config .config.old.1;                   \
  54                          mv -f .tmp.config .config;                     \
  55                          $< $(silent) --oldconfig $(Kconfig);           \
  56                          mv -f .config.old.1 .config.old)               \
  57         else                                                            \
  58                         mv -f .tmp.config .config;                      \
  59                         $< $(silent) --oldconfig $(Kconfig);            \
  60         fi
  61         $(Q)rm -f .tmp.config
  62
  63 # These targets map 1:1 to the commandline options of 'conf'
  64 #
  65 # Note:
  66 #  syncconfig has become an internal implementation detail and is now
  67 #  deprecated for external use
  68 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
  69         alldefconfig randconfig listnewconfig olddefconfig syncconfig
  70 PHONY += $(simple-targets)
  71
  72 $(simple-targets): $(obj)/conf
  73         $< $(silent) --$@ $(Kconfig)
  74
  75 PHONY += savedefconfig defconfig
  76
  77 savedefconfig: $(obj)/conf
  78         $< $(silent) --$@=defconfig $(Kconfig)
  79
  80 defconfig: $(obj)/conf
  81 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)),)
  82         @$(kecho) "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
  83         $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
  84 else
  85         @$(kecho) "*** Default configuration is based on target '$(KBUILD_DEFCONFIG)'"
  86         $(Q)$(MAKE) -f $(srctree)/Makefile $(KBUILD_DEFCONFIG)
  87 endif
  88
  89 %_defconfig: $(obj)/conf
  90         $(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
  91
  92 configfiles=$(wildcard $(srctree)/kernel/configs/$@ $(srctree)/arch/$(SRCARCH)/configs/$@)
  93
  94 %.config: $(obj)/conf
  95         $(if $(call configfiles),, $(error No configuration exists for this target on this architecture))
  96         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m .config $(configfiles)
  97         $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
  98
  99 PHONY += kvmconfig
 100 kvmconfig: kvm_guest.config
 101         @:
 102
 103 PHONY += xenconfig
 104 xenconfig: xen.config
 105         @:
 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  '  localyesconfig  - Update current config converting local mods to core'
 129         @echo  '  defconfig       - New config with default from ARCH supplied defconfig'
 130         @echo  '  savedefconfig   - Save current config as ./defconfig (minimal config)'
 131         @echo  '  allnoconfig     - New config where all options are answered with no'
 132         @echo  '  allyesconfig    - New config where all options are accepted with yes'
 133         @echo  '  allmodconfig    - New config selecting modules when possible'
 134         @echo  '  alldefconfig    - New config with all symbols set to default'
 135         @echo  '  randconfig      - New config with random answer to all options'
 136         @echo  '  listnewconfig   - List new options'
 137         @echo  '  olddefconfig    - Same as oldconfig but sets new symbols to their'
 138         @echo  '                    default value without prompting'
 139         @echo  '  kvmconfig       - Enable additional options for kvm guest kernel support'
 140         @echo  '  xenconfig       - Enable additional options for xen dom0 and guest kernel support'
 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
 146 common-objs     := confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \
 147                    symbol.o
 148
 149 $(obj)/lexer.lex.o: $(obj)/parser.tab.h
 150 HOSTCFLAGS_lexer.lex.o  := -I $(srctree)/$(src)
 151 HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
 152
 153 # conf: Used for defconfig, oldconfig and related targets
 154 hostprogs-y     += conf
 155 conf-objs       := conf.o $(common-objs)
 156
 157 # nconf: Used for the nconfig target based on ncurses
 158 hostprogs-y     += nconf
 159 nconf-objs      := nconf.o nconf.gui.o $(common-objs)
 160
 161 HOSTLDLIBS_nconf        = $(shell . $(obj)/nconf-cfg && echo $$libs)
 162 HOSTCFLAGS_nconf.o      = $(shell . $(obj)/nconf-cfg && echo $$cflags)
 163 HOSTCFLAGS_nconf.gui.o  = $(shell . $(obj)/nconf-cfg && echo $$cflags)
 164
 165 $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
 166
 167 # mconf: Used for the menuconfig target based on lxdialog
 168 hostprogs-y     += mconf
 169 lxdialog        := $(addprefix lxdialog/, \
 170                      checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
 171 mconf-objs      := mconf.o $(lxdialog) $(common-objs)
 172
 173 HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
 174 $(foreach f, mconf.o $(lxdialog), \
 175   $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
 176
 177 $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
 178
 179 # qconf: Used for the xconfig target based on Qt
 180 hostprogs-y     += qconf
 181 qconf-cxxobjs   := qconf.o
 182 qconf-objs      := images.o $(common-objs)
 183
 184 HOSTLDLIBS_qconf        = $(shell . $(obj)/qconf-cfg && echo $$libs)
 185 HOSTCXXFLAGS_qconf.o    = $(shell . $(obj)/qconf-cfg && echo $$cflags)
 186
 187 $(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
 188
 189 quiet_cmd_moc = MOC     $@
 190       cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
 191
 192 $(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
 193         $(call cmd,moc)
 194
 195 # gconf: Used for the gconfig target based on GTK+
 196 hostprogs-y     += gconf
 197 gconf-objs      := gconf.o images.o $(common-objs)
 198
 199 HOSTLDLIBS_gconf    = $(shell . $(obj)/gconf-cfg && echo $$libs)
 200 HOSTCFLAGS_gconf.o  = $(shell . $(obj)/gconf-cfg && echo $$cflags)
 201
 202 $(obj)/gconf.o: $(obj)/gconf-cfg
 203
 204 # check if necessary packages are available, and configure build flags
 205 filechk_conf_cfg = $(CONFIG_SHELL) $<
 206
 207 $(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
 208         $(call filechk,conf_cfg)
 209
 210 clean-files += *conf-cfg