Makefile

   1 ## SPDX-License-Identifier: BSD-3-Clause
   2
   3 ifneq ($(words $(CURDIR)),1)
   4     $(error Error: Path to the main directory cannot contain spaces)
   5 endif
   6 top := $(CURDIR)
   7 src := src
   8 srck := $(top)/util/kconfig
   9 obj ?= build
  10 override obj := $(subst $(top)/,,$(abspath $(obj)))
  11 xcompile ?= $(obj)/xcompile
  12 objutil ?= $(obj)/util
  13 objk := $(objutil)/kconfig
  14 absobj := $(abspath $(obj))
  15
  16 additional-dirs :=
  17
  18 VBOOT_HOST_BUILD ?= $(abspath $(objutil)/vboot_lib)
  19
  20 COREBOOT_EXPORTS := COREBOOT_EXPORTS
  21 COREBOOT_EXPORTS += top src srck obj objutil objk
  22
  23 DOTCONFIG ?= $(top)/.config
  24 KCONFIG_CONFIG = $(DOTCONFIG)
  25 KCONFIG_AUTOADS := $(obj)/cb-config.ads
  26 KCONFIG_AUTOHEADER := $(obj)/config.h
  27 KCONFIG_AUTOCONFIG := $(obj)/auto.conf
  28 KCONFIG_DEPENDENCIES := $(obj)/auto.conf.cmd
  29 KCONFIG_SPLITCONFIG := $(obj)/config/
  30 KCONFIG_TRISTATE := $(obj)/tristate.conf
  31 KCONFIG_NEGATIVES := 1
  32 KCONFIG_STRICT := 1
  33 KCONFIG_PACKAGE := CB.Config
  34 KCONFIG_MAKEFILE_REAL ?= $(objk)/Makefile.real
  35
  36 COREBOOT_EXPORTS += KCONFIG_CONFIG KCONFIG_AUTOHEADER KCONFIG_AUTOCONFIG
  37 COREBOOT_EXPORTS += KCONFIG_DEPENDENCIES KCONFIG_SPLITCONFIG KCONFIG_TRISTATE
  38 COREBOOT_EXPORTS += KCONFIG_NEGATIVES KCONFIG_STRICT
  39 COREBOOT_EXPORTS += KCONFIG_AUTOADS KCONFIG_PACKAGE
  40
  41 # Make does not offer a recursive wildcard function, so here's one:
  42 rwildcard=$(wildcard $1$2) $(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2))
  43 SYMLINK_LIST = $(call rwildcard,site-local/,symlink.txt)
  44
  45
  46 # directory containing the toplevel Makefile.inc
  47 TOPLEVEL := .
  48
  49 CONFIG_SHELL := sh
  50 KBUILD_DEFCONFIG := configs/defconfig
  51 UNAME_RELEASE := $(shell uname -r)
  52 HAVE_DOTCONFIG := $(wildcard $(DOTCONFIG))
  53 HAVE_KCONFIG_MAKEFILE_REAL := $(wildcard $(KCONFIG_MAKEFILE_REAL))
  54 MAKEFLAGS += -rR --no-print-directory
  55
  56 # Make is silent per default, but 'make V=1' will show all compiler calls.
  57 Q:=@
  58 ifneq ($(V),1)
  59 ifneq ($(Q),)
  60 .SILENT:
  61 MAKEFLAGS += -s
  62 quiet_errors := 2>/dev/null
  63 endif
  64 endif
  65
  66 # Disable implicit/built-in rules to make Makefile errors fail fast.
  67 .SUFFIXES:
  68
  69 HOSTCFLAGS := -g
  70 HOSTCXXFLAGS := -g
  71
  72 PREPROCESS_ONLY := -E -P -x assembler-with-cpp -undef -I .
  73
  74 export $(COREBOOT_EXPORTS)
  75
  76 all: real-all
  77
  78 help_coreboot help::
  79         @echo  '*** coreboot platform targets ***'
  80         @echo  '  Use "make [target] V=1" for extra build debug information'
  81         @echo  '  all                   - Build coreboot'
  82         @echo  '  clean                 - Remove coreboot build artifacts'
  83         @echo  '  distclean             - Remove build artifacts and config files'
  84         @echo  '  sphinx                - Build sphinx documentation for coreboot'
  85         @echo  '  sphinx-lint           - Build sphinx documenttion for coreboot with warnings as errors'
  86         @echo  '  filelist              - Show files used in current build'
  87         @echo  '  printall              - print makefile info for debugging'
  88         @echo  '  gitconfig             - set up git to submit patches to coreboot'
  89         @echo  '  ctags / ctags-project - make ctags file for all of coreboot or current board'
  90         @echo  '  cscope / cscope-project - make cscope.out file for coreboot or current board'
  91         @echo
  92
  93 # This include must come _before_ the pattern rules below!
  94 # Order _does_ matter for pattern rules.
  95 include $(srck)/Makefile.inc
  96
  97 # The cases where we don't need fully populated $(obj) lists:
  98 # 1. when no .config exists
  99 # 2. When no $(obj)/util/kconfig/Makefile.real exists and we're building tools
 100 # 3. when make config (in any flavour) is run
 101 # 4. when make distclean is run
 102 # Don't waste time on reading all Makefile.incs in these cases
 103 ifeq ($(strip $(HAVE_DOTCONFIG)),)
 104 NOCOMPILE:=1
 105 endif
 106 ifeq ($(strip $(HAVE_KCONFIG_MAKEFILE_REAL)),)
 107 ifneq ($(MAKECMDGOALS),tools)
 108 NOCOMPILE:=1
 109 endif
 110 endif
 111 ifneq ($(MAKECMDGOALS),)
 112 ifneq ($(filter %config %clean cross% clang iasl lint% help% what-jenkins-does,$(MAKECMDGOALS)),)
 113 NOCOMPILE:=1
 114 endif
 115 ifneq ($(filter %clean lint% help% what-jenkins-does,$(MAKECMDGOALS)),)
 116 NOMKDIR:=1
 117 UNIT_TEST:=1
 118 endif
 119 endif
 120
 121 ifneq ($(filter help%, $(MAKECMDGOALS)), )
 122 NOCOMPILE:=1
 123 UNIT_TEST:=1
 124 else
 125 ifneq ($(filter %-test %-tests %coverage-report, $(MAKECMDGOALS)),)
 126 ifneq ($(filter-out %-test %-tests %coverage-report, $(MAKECMDGOALS)),)
 127 $(error Cannot mix unit-tests targets with other targets)
 128 endif
 129 UNIT_TEST:=1
 130 NOCOMPILE:=
 131 endif
 132 endif
 133
 134 $(xcompile): util/xcompile/xcompile
 135         rm -f $@
 136         $< $(XGCCPATH) > $@.tmp
 137         \mv -f $@.tmp $@ 2> /dev/null
 138         rm -f $@.tmp
 139
 140 ifeq ($(NOCOMPILE),1)
 141 # We also don't use .xcompile in the no-compile situations, so
 142 # provide some reasonable defaults.
 143 HOSTCC ?= $(if $(shell type gcc 2>/dev/null),gcc,cc)
 144 HOSTCXX ?= g++
 145
 146 include $(TOPLEVEL)/Makefile.inc
 147 include $(TOPLEVEL)/payloads/Makefile.inc
 148 include $(TOPLEVEL)/util/testing/Makefile.inc
 149 -include $(TOPLEVEL)/site-local/Makefile.inc
 150 include $(TOPLEVEL)/tests/Makefile.inc
 151 real-all:
 152         @echo "Error: Trying to build, but NOCOMPILE is set." >&2
 153         @echo "  Please file a bug with the following information:"
 154         @echo "- MAKECMDGOALS: $(MAKECMDGOALS)" >&2
 155         @echo "- HAVE_DOTCONFIG: $(HAVE_DOTCONFIG)" >&2
 156         @echo "- HAVE_KCONFIG_MAKEFILE_REAL: $(HAVE_KCONFIG_MAKEFILE_REAL)" >&2
 157         @exit 1
 158 else
 159
 160 ifneq ($(UNIT_TEST),1)
 161 include $(DOTCONFIG)
 162 endif
 163
 164 # The toolchain requires xcompile to determine the ARCH_SUPPORTED, so we can't
 165 # wait for make to generate the file.
 166 $(if $(wildcard $(xcompile)),, $(shell \
 167         mkdir -p $(dir $(xcompile)) && \
 168         util/xcompile/xcompile $(XGCCPATH) > $(xcompile) || rm -f $(xcompile)))
 169
 170 include $(xcompile)
 171
 172 ifneq ($(XCOMPILE_COMPLETE),1)
 173 $(shell rm -f $(xcompile))
 174 $(error $(xcompile) deleted because it's invalid. \
 175         Restarting the build should fix that, or explain the problem)
 176 endif
 177
 178 # reproducible builds
 179 LANG:=C
 180 LC_ALL:=C
 181 TZ:=UTC0
 182 ifneq ($(NOCOMPILE),1)
 183 SOURCE_DATE_EPOCH := $(shell $(top)/util/genbuild_h/genbuild_h.sh . | sed -n 's/^.define COREBOOT_BUILD_EPOCH\>.*"\(.*\)".*/\1/p')
 184 endif
 185 # don't use COREBOOT_EXPORTS to ensure build steps outside the coreboot build system
 186 # are reproducible
 187 export LANG LC_ALL TZ SOURCE_DATE_EPOCH
 188
 189 ifneq ($(CONFIG_MMX),y)
 190 CFLAGS_x86_32 += -mno-mmx
 191 endif
 192
 193 ifneq ($(UNIT_TEST),1)
 194 include toolchain.inc
 195 endif
 196
 197 strip_quotes = $(strip $(subst ",,$(subst \",,$(1))))
 198 # fix makefile syntax highlighting after strip macro \" "))
 199
 200 # The primary target needs to be here before we include the
 201 # other files
 202
 203 real-all: real-target
 204
 205 # must come rather early
 206 .SECONDARY:
 207 .SECONDEXPANSION:
 208 .DELETE_ON_ERROR:
 209
 210 $(KCONFIG_AUTOHEADER): $(KCONFIG_CONFIG) $(objutil)/kconfig/conf
 211         $(MAKE) olddefconfig
 212         $(MAKE) syncconfig
 213
 214 $(KCONFIG_AUTOCONFIG): $(KCONFIG_AUTOHEADER)
 215         true
 216
 217 $(KCONFIG_AUTOADS): $(KCONFIG_CONFIG) $(KCONFIG_AUTOHEADER) $(objutil)/kconfig/toada
 218         $(objutil)/kconfig/toada CB.Config <$< >$@
 219
 220 $(obj)/%/$(notdir $(KCONFIG_AUTOADS)): $(KCONFIG_AUTOADS)
 221         cp $< $@
 222
 223 # Add a new class of source/object files to the build system
 224 add-class= \
 225         $(eval $(1)-srcs:=) \
 226         $(eval $(1)-objs:=) \
 227         $(eval classes+=$(1))
 228
 229 # Special classes are managed types with special behaviour
 230 # On parse time, for each entry in variable $(1)-y
 231 # a handler $(1)-handler is executed with the arguments:
 232 # * $(1): directory the parser is in
 233 # * $(2): current entry
 234 add-special-class= \
 235         $(eval $(1):=) \
 236         $(eval special-classes+=$(1))
 237
 238 # Converts one or more source file paths to their corresponding build/ paths.
 239 # Only .ads, adb, .c and .S get converted to .o, other files (like .ld) keep
 240 # their name.
 241 # $1 stage name
 242 # $2 file path (list)
 243 src-to-obj=\
 244         $(patsubst $(obj)/%,$(obj)/$(1)/%,\
 245         $(patsubst $(obj)/$(1)/%,$(obj)/%,\
 246         $(patsubst 3rdparty/%,$(obj)/%,\
 247         $(patsubst src/%,$(obj)/%,\
 248         $(patsubst %.ads,%.o,\
 249         $(patsubst %.adb,%.o,\
 250         $(patsubst %.c,%.o,\
 251         $(patsubst %.S,%.o,\
 252         $(subst .$(1),,$(2))))))))))
 253
 254 # Converts one or more source file paths to the corresponding build/ paths
 255 # of their Ada library information (.ali) files.
 256 # $1 stage name
 257 # $2 file path (list)
 258 src-to-ali=\
 259         $(patsubst $(obj)/%,$(obj)/$(1)/%,\
 260         $(patsubst $(obj)/$(1)/%,$(obj)/%,\
 261         $(patsubst 3rdparty/%,$(obj)/%,\
 262         $(patsubst src/%,$(obj)/%,\
 263         $(patsubst %.ads,%.ali,\
 264         $(patsubst %.adb,%.ali,\
 265         $(subst .$(1),,\
 266         $(filter %.ads %.adb,$(2)))))))))
 267
 268 # Clean -y variables, include Makefile.inc
 269 # Add paths to files in X-y to X-srcs
 270 # Add subdirs-y to subdirs
 271 includemakefiles= \
 272         $(foreach class,classes subdirs $(classes) $(special-classes), $(eval $(class)-y:=)) \
 273         $(eval -include $(1)) \
 274         $(foreach class,$(classes-y), $(call add-class,$(class))) \
 275         $(foreach special,$(special-classes), \
 276                 $(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
 277         $(foreach class,$(classes), \
 278                 $(eval $(class)-srcs+= \
 279                         $$(subst $(absobj)/,$(obj)/, \
 280                         $$(subst $(top)/,, \
 281                         $$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y)))))))) \
 282         $(eval subdirs+=$$(subst $(CURDIR)/,,$$(wildcard $$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y))))))
 283
 284 # For each path in $(subdirs) call includemakefiles
 285 # Repeat until subdirs is empty
 286 evaluate_subdirs= \
 287         $(eval cursubdirs:=$(subdirs)) \
 288         $(eval subdirs:=) \
 289         $(foreach dir,$(cursubdirs), \
 290                 $(eval $(call includemakefiles,$(dir)/Makefile.inc))) \
 291         $(if $(subdirs),$(eval $(call evaluate_subdirs)))
 292
 293 # collect all object files eligible for building
 294 subdirs:=$(TOPLEVEL)
 295 postinclude-hooks :=
 296
 297 # Don't iterate through Makefile.incs under src/ when building tests
 298 ifneq ($(UNIT_TEST),1)
 299 $(eval $(call evaluate_subdirs))
 300 else
 301 include $(TOPLEVEL)/tests/Makefile.inc
 302 endif
 303
 304 ifeq ($(FAILBUILD),1)
 305 $(error cannot continue build)
 306 endif
 307
 308 # Run hooks registered by subdirectories that need to be evaluated after all files have been parsed
 309 $(eval $(postinclude-hooks))
 310
 311 # Eliminate duplicate mentions of source files in a class
 312 $(foreach class,$(classes),$(eval $(class)-srcs:=$(sort $($(class)-srcs))))
 313
 314 # Build Kconfig .ads if necessary
 315 ifeq ($(CONFIG_RAMSTAGE_ADA),y)
 316 ramstage-srcs += $(obj)/ramstage/$(notdir $(KCONFIG_AUTOADS))
 317 endif
 318
 319 # To track dependencies, we need all Ada specification (.ads) files in
 320 # *-srcs. Extract / filter all specification files that have a matching
 321 # body (.adb) file here (specifications without a body are valid sources
 322 # in Ada).
 323 $(foreach class,$(classes),$(eval $(class)-extra-specs := \
 324         $(filter \
 325                 $(addprefix %/,$(patsubst %.adb,%.ads,$(notdir $(filter %.adb,$($(class)-srcs))))), \
 326                 $(filter %.ads,$($(class)-srcs)))))
 327 $(foreach class,$(classes),$(eval $(class)-srcs := \
 328         $(filter-out $($(class)-extra-specs),$($(class)-srcs))))
 329
 330 $(foreach class,$(classes),$(eval $(class)-objs:=$(call src-to-obj,$(class),$($(class)-srcs))))
 331 $(foreach class,$(classes),$(eval $(class)-alis:=$(call src-to-ali,$(class),$($(class)-srcs))))
 332
 333 # For Ada includes
 334 $(foreach class,$(classes),$(eval $(class)-ada-dirs:=$(sort $(dir $(filter %.ads %.adb,$($(class)-srcs)) $($(class)-extra-specs)))))
 335
 336 # Save all objs before processing them (for dependency inclusion)
 337 originalobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 338
 339 # Call post-processors if they're defined
 340 $(foreach class,$(classes),\
 341         $(if $(value $(class)-postprocess),$(eval $(call $(class)-postprocess,$($(class)-objs)))))
 342
 343 allsrcs:=$(foreach var, $(addsuffix -srcs,$(classes)), $($(var)))
 344 allobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 345 alldirs:=$(sort $(abspath $(dir $(allobjs))))
 346
 347 # Reads dependencies from an Ada library information (.ali) file
 348 # Only basenames (with suffix) are preserved so we have to look the
 349 # paths up in $($(stage)-srcs).
 350 # $1 stage name
 351 # $2 ali file
 352 create_ada_deps=$$(if $(2),\
 353         gnat.adc \
 354         $$(filter \
 355                 $$(addprefix %/,$$(shell sed -ne's/^D \([^\t]\+\).*$$$$/\1/p' $(2) 2>/dev/null)), \
 356                 $$($(1)-srcs) $$($(1)-extra-specs)))
 357
 358 # macro to define template macros that are used by use_template macro
 359 define create_cc_template
 360 # $1 obj class
 361 # $2 source suffix (c, S, ld, ...)
 362 # $3 additional compiler flags
 363 # $4 additional dependencies
 364 ifn$(EMPTY)def $(1)-objs_$(2)_template
 365 de$(EMPTY)fine $(1)-objs_$(2)_template
 366 ifn$(EMPTY)eq ($(filter ads adb,$(2)),)
 367 $$(call src-to-obj,$1,$$(1).$2): $$(1).$2 $$(call create_ada_deps,$1,$$(call src-to-ali,$1,$$(1).$2)) $(4)
 368         @printf "    GCC        $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 369         $(GCC_$(1)) \
 370                 $$$$(ADAFLAGS_$(1)) $$$$(addprefix -I,$$$$($(1)-ada-dirs)) \
 371                 $(3) -c -o $$$$@ $$$$<
 372 el$(EMPTY)se
 373 $$(call src-to-obj,$1,$$(1).$2): $$(1).$2 $(KCONFIG_AUTOHEADER) $(4)
 374         @printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 375         $(CC_$(1)) \
 376                 -MMD $$$$(CPPFLAGS_$(1)) $$$$(CFLAGS_$(1)) -MT $$$$(@) \
 377                 $(3) -c -o $$$$@ $$$$<
 378 end$(EMPTY)if
 379 en$(EMPTY)def
 380 end$(EMPTY)if
 381 endef
 382
 383 filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
 384 $(foreach class,$(classes), \
 385         $(foreach type,$(call filetypes-of-class,$(class)), \
 386                 $(eval $(class)-$(type)-ccopts += $(generic-$(type)-ccopts) $($(class)-generic-ccopts)) \
 387                 $(if $(generic-objs_$(type)_template_gen),$(eval $(call generic-objs_$(type)_template_gen,$(class))),\
 388                 $(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps))))))
 389
 390 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(basename $(file)))))
 391 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
 392
 393 # To supported complex package initializations, we need to call the
 394 # emitted code explicitly. gnatbind gathers all the calls for us
 395 # and exports them as a procedure $(stage)_adainit(). Every stage that
 396 # uses Ada code has to call it!
 397 define gnatbind_template
 398 # $1 class
 399 $$(obj)/$(1)/b__$(1).adb: $$$$(filter-out $$(obj)/$(1)/b__$(1).ali,$$$$($(1)-alis))
 400         @printf "    BIND       $$(subst $$(obj)/,,$$@)\n"
 401         # We have to give gnatbind a simple filename (without leading
 402         # path components) so just cd there.
 403         cd $$(dir $$@) && \
 404                 $$(GNATBIND_$(1)) -a -n \
 405                         --RTS=$$(absobj)/libgnat-$$(ARCH-$(1)-y)/ \
 406                         -L$(1)_ada -o $$(notdir $$@) \
 407                         $$(subst $$(dir $$@),,$$^)
 408 $$(obj)/$(1)/b__$(1).o: $$(obj)/$(1)/b__$(1).adb
 409         @printf "    GCC        $$(subst $$(obj)/,,$$@)\n"
 410         $(GCC_$(1)) $$(ADAFLAGS_$(1)) -c -o $$@ $$<
 411 $(1)-objs += $$(obj)/$(1)/b__$(1).o
 412 $($(1)-alis): %.ali: %.o ;
 413 endef
 414
 415 $(eval $(foreach class,$(filter-out libgnat-%,$(classes)), \
 416         $(if $($(class)-alis),$(call gnatbind_template,$(class)))))
 417
 418 DEPENDENCIES += $(addsuffix .d,$(basename $(allobjs)))
 419 -include $(DEPENDENCIES)
 420
 421 printall:
 422         @$(foreach class,$(classes), echo $(class)-objs: $($(class)-objs) | tr ' ' '\n'; echo; )
 423         @echo alldirs: $(alldirs) | tr ' ' '\n'; echo
 424         @echo allsrcs: $(allsrcs) | tr ' ' '\n'; echo
 425         @echo DEPENDENCIES: $(DEPENDENCIES) | tr ' ' '\n'; echo
 426         @$(foreach class,$(special-classes),echo $(class):'$($(class))' | tr ' ' '\n'; echo; )
 427 endif
 428
 429 ifndef NOMKDIR
 430 $(shell mkdir -p $(KCONFIG_SPLITCONFIG) $(objk)/lxdialog $(additional-dirs) $(alldirs))
 431 endif
 432
 433 $(obj)/project_filelist.txt:
 434         if [ -z "$(wildcard $(obj)/coreboot.rom)" ]; then \
 435                 echo "*** Error: Project must be built before generating file list ***"; \
 436                 exit 1; \
 437         fi
 438         find $(obj) -path "$(obj)/util" -prune -o -name "*.d" -exec cat {} \; | \
 439           sed "s|$(top)/||" | sed 's/[:\\]/ /g' | sed 's/ /\n/g' | sort | uniq | \
 440           grep -v '\.o$$' > $(obj)/project_filelist.txt
 441
 442 filelist: $(obj)/project_filelist.txt
 443         printf "\nFiles used in build:\n"
 444         cat $(obj)/project_filelist.txt
 445
 446 #works with either exuberant ctags or ctags.emacs
 447 ctags-project: clean-ctags $(obj)/project_filelist.txt
 448         cat $(obj)/project_filelist.txt | \
 449           xargs ctags -o tags
 450
 451 cscope-project: clean-cscope $(obj)/project_filelist.txt
 452         cat $(obj)/project_filelist.txt | xargs cscope -b
 453
 454 cscope:
 455         cscope -bR
 456
 457 sphinx:
 458         $(MAKE) -C Documentation -f Makefile.sphinx html
 459
 460 sphinx-lint:
 461         $(MAKE) SPHINXOPTS=-W -C Documentation -f Makefile.sphinx html
 462
 463 symlink:
 464         @echo "Creating Symbolic Links.."; \
 465         for link in $(SYMLINK_LIST); do \
 466                 SYMLINK=`cat $$link`; \
 467                 REALPATH=`realpath $$link`; \
 468                 if [ -L "$$SYMLINK" ]; then \
 469                         continue; \
 470                 elif [ ! -e "$$SYMLINK" ]; then \
 471                         echo -e "\tLINK $$SYMLINK -> $$(dirname $$REALPATH)"; \
 472                         ln -s $$(dirname $$REALPATH) $$SYMLINK; \
 473                 else \
 474                         echo -e "\tFAILED: $$SYMLINK exists"; \
 475                 fi \
 476         done
 477
 478 clean-symlink:
 479         @echo "Deleting symbolic link";\
 480         EXISTING_SYMLINKS=`find -L ./src -xtype l | grep -v 3rdparty`; \
 481         for link in $$EXISTING_SYMLINKS; do \
 482                 echo -e "\tUNLINK $$link"; \
 483                 rm "$$link"; \
 484         done
 485
 486 clean-for-update:
 487         rm -rf $(obj) .xcompile
 488
 489 clean: clean-for-update clean-utils clean-payloads
 490         rm -f .ccwrap
 491
 492 clean-cscope:
 493         rm -f cscope.out
 494
 495 clean-ctags:
 496         rm -f tags
 497
 498 clean-utils:
 499         $(foreach tool, $(TOOLLIST), \
 500                 $(MAKE) -C util/$(tool) clean MFLAGS= MAKEFLAGS= ;)
 501
 502 distclean-utils:
 503         $(foreach tool, $(TOOLLIST), \
 504                 $(MAKE) -C util/$(tool) distclean MFLAGS= MAKEFLAGS= ; \
 505                 rm -f /util/$(tool)/junit.xml;)
 506
 507 distclean: clean clean-ctags clean-cscope distclean-payloads distclean-utils
 508         rm -f .config .config.old ..config.tmp* .kconfig.d .tmpconfig* .ccwrap .xcompile
 509         rm -rf coreboot-builds coreboot-builds-chromeos
 510         rm -f abuild*.xml junit.xml* util/lint/junit.xml
 511
 512 .PHONY: $(PHONY) clean clean-for-update clean-cscope cscope distclean sphinx sphinx-lint
 513 .PHONY: ctags-project cscope-project clean-ctags symlink clean-symlink