Makefile 8.2 KB

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