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 HOSTPKG_CONFIG ?= pkg-config
  73 COREBOOT_EXPORTS += HOSTPKG_CONFIG
  74
  75 PREPROCESS_ONLY := -E -P -x assembler-with-cpp -undef -I .
  76
  77 export $(COREBOOT_EXPORTS)
  78
  79 all: real-all
  80
  81 help_coreboot help::
  82         @echo  '*** coreboot platform targets ***'
  83         @echo  '  Use "make [target] V=1" for extra build debug information'
  84         @echo  '  all                   - Build coreboot'
  85         @echo  '  clean                 - Remove coreboot build artifacts'
  86         @echo  '  distclean             - Remove build artifacts and config files'
  87         @echo  '  sphinx                - Build sphinx documentation for coreboot'
  88         @echo  '  sphinx-lint           - Build sphinx documentation for coreboot with warnings as errors'
  89         @echo  '  filelist              - Show files used in current build'
  90         @echo  '  printall              - print makefile info for debugging'
  91         @echo  '  gitconfig             - set up git to submit patches to coreboot'
  92         @echo  '  ctags / ctags-project - make ctags file for all of coreboot or current board'
  93         @echo  '  cscope / cscope-project - make cscope.out file for coreboot or current board'
  94         @echo
  95
  96 # This include must come _before_ the pattern rules below!
  97 # Order _does_ matter for pattern rules.
  98 include $(srck)/Makefile.inc
  99
 100 # The cases where we don't need fully populated $(obj) lists:
 101 # 1. when no .config exists
 102 # 2. When no $(obj)/util/kconfig/Makefile.real exists and we're building tools
 103 # 3. when make config (in any flavour) is run
 104 # 4. when make distclean is run
 105 # Don't waste time on reading all Makefile.incs in these cases
 106 ifeq ($(strip $(HAVE_DOTCONFIG)),)
 107 NOCOMPILE:=1
 108 endif
 109 ifeq ($(strip $(HAVE_KCONFIG_MAKEFILE_REAL)),)
 110 ifneq ($(MAKECMDGOALS),tools)
 111 NOCOMPILE:=1
 112 endif
 113 endif
 114 ifneq ($(MAKECMDGOALS),)
 115 ifneq ($(filter %config %clean cross% clang iasl lint% help% what-jenkins-does,$(MAKECMDGOALS)),)
 116 NOCOMPILE:=1
 117 endif
 118 ifneq ($(filter %clean lint% help% what-jenkins-does,$(MAKECMDGOALS)),)
 119 NOMKDIR:=1
 120 UNIT_TEST:=1
 121 endif
 122 endif
 123
 124 ifneq ($(filter help%, $(MAKECMDGOALS)), )
 125 NOCOMPILE:=1
 126 UNIT_TEST:=1
 127 else
 128 ifneq ($(filter %-test %-tests %coverage-report, $(MAKECMDGOALS)),)
 129 ifneq ($(filter-out %-test %-tests %coverage-report, $(MAKECMDGOALS)),)
 130 $(error Cannot mix unit-tests targets with other targets)
 131 endif
 132 UNIT_TEST:=1
 133 NOCOMPILE:=
 134 endif
 135 endif
 136
 137 $(xcompile): util/xcompile/xcompile
 138         rm -f $@
 139         $< $(XGCCPATH) > $@.tmp
 140         \mv -f $@.tmp $@ 2> /dev/null
 141         rm -f $@.tmp
 142
 143 ifeq ($(NOCOMPILE),1)
 144 # We also don't use .xcompile in the no-compile situations, so
 145 # provide some reasonable defaults.
 146 HOSTCC ?= $(if $(shell type gcc 2>/dev/null),gcc,cc)
 147 HOSTCXX ?= g++
 148
 149 include $(TOPLEVEL)/Makefile.inc
 150 include $(TOPLEVEL)/payloads/Makefile.inc
 151 include $(TOPLEVEL)/util/testing/Makefile.inc
 152 -include $(TOPLEVEL)/site-local/Makefile.inc
 153 include $(TOPLEVEL)/tests/Makefile.inc
 154 printall real-all:
 155         @echo "Error: Trying to build, but NOCOMPILE is set." >&2
 156         @echo "  Please file a bug with the following information:"
 157         @echo "- MAKECMDGOALS: $(MAKECMDGOALS)" >&2
 158         @echo "- HAVE_DOTCONFIG: $(HAVE_DOTCONFIG)" >&2
 159         @echo "- HAVE_KCONFIG_MAKEFILE_REAL: $(HAVE_KCONFIG_MAKEFILE_REAL)" >&2
 160         @exit 1
 161
 162 else
 163
 164 ifneq ($(UNIT_TEST),1)
 165 include $(DOTCONFIG)
 166 endif
 167
 168 # The toolchain requires xcompile to determine the ARCH_SUPPORTED, so we can't
 169 # wait for make to generate the file.
 170 $(if $(wildcard $(xcompile)),, $(shell \
 171         mkdir -p $(dir $(xcompile)) && \
 172         util/xcompile/xcompile $(XGCCPATH) > $(xcompile) || rm -f $(xcompile)))
 173
 174 include $(xcompile)
 175
 176 ifneq ($(XCOMPILE_COMPLETE),1)
 177 $(shell rm -f $(xcompile))
 178 $(error $(xcompile) deleted because it's invalid. \
 179         Restarting the build should fix that, or explain the problem)
 180 endif
 181
 182 # reproducible builds
 183 LANG:=C
 184 LC_ALL:=C
 185 TZ:=UTC0
 186 ifneq ($(NOCOMPILE),1)
 187 SOURCE_DATE_EPOCH := $(shell $(top)/util/genbuild_h/genbuild_h.sh . | sed -n 's/^.define COREBOOT_BUILD_EPOCH\>.*"\(.*\)".*/\1/p')
 188 endif
 189 # don't use COREBOOT_EXPORTS to ensure build steps outside the coreboot build system
 190 # are reproducible
 191 export LANG LC_ALL TZ SOURCE_DATE_EPOCH
 192
 193 ifneq ($(UNIT_TEST),1)
 194 include toolchain.inc
 195 endif
 196
 197 strip_quotes = $(strip $(subst ",,$(subst \",,$(1))))
 198 # fix makefile syntax highlighting after strip macro \" "))
 199
 200 ifneq ($(NOCOMPILE),1)
 201 $(shell rm -f $(CCACHE_STATSLOG))
 202 endif
 203
 204 # The primary target needs to be here before we include the
 205 # other files
 206
 207 real-all: real-target
 208
 209 # must come rather early
 210 .SECONDARY:
 211 .SECONDEXPANSION:
 212 .DELETE_ON_ERROR:
 213
 214 $(KCONFIG_AUTOHEADER): $(KCONFIG_CONFIG) $(objutil)/kconfig/conf
 215         $(MAKE) olddefconfig
 216         $(MAKE) syncconfig
 217
 218 $(KCONFIG_AUTOCONFIG): $(KCONFIG_AUTOHEADER)
 219         true
 220
 221 $(KCONFIG_AUTOADS): $(KCONFIG_CONFIG) $(KCONFIG_AUTOHEADER) $(objutil)/kconfig/toada
 222         $(objutil)/kconfig/toada CB.Config <$< >$@
 223
 224 $(obj)/%/$(notdir $(KCONFIG_AUTOADS)): $(KCONFIG_AUTOADS)
 225         cp $< $@
 226
 227 # Add a new class of source/object files to the build system
 228 add-class= \
 229         $(eval $(1)-srcs:=) \
 230         $(eval $(1)-objs:=) \
 231         $(eval classes+=$(1))
 232
 233 # Special classes are managed types with special behaviour
 234 # On parse time, for each entry in variable $(1)-y
 235 # a handler $(1)-handler is executed with the arguments:
 236 # * $(1): directory the parser is in
 237 # * $(2): current entry
 238 add-special-class= \
 239         $(eval $(1):=) \
 240         $(eval special-classes+=$(1))
 241
 242 # Converts one or more source file paths to their corresponding build/ paths.
 243 # Only .ads, adb, .c and .S get converted to .o, other files (like .ld) keep
 244 # their name.
 245 # $1 stage name
 246 # $2 file path (list)
 247 src-to-obj=\
 248         $(patsubst $(obj)/%,$(obj)/$(1)/%,\
 249         $(patsubst $(obj)/$(1)/%,$(obj)/%,\
 250         $(patsubst 3rdparty/%,$(obj)/%,\
 251         $(patsubst src/%,$(obj)/%,\
 252         $(patsubst %.ads,%.o,\
 253         $(patsubst %.adb,%.o,\
 254         $(patsubst %.c,%.o,\
 255         $(patsubst %.S,%.o,\
 256         $(subst .$(1),,$(2))))))))))
 257
 258 # Converts one or more source file paths to the corresponding build/ paths
 259 # of their Ada library information (.ali) files.
 260 # $1 stage name
 261 # $2 file path (list)
 262 src-to-ali=\
 263         $(patsubst $(obj)/%,$(obj)/$(1)/%,\
 264         $(patsubst $(obj)/$(1)/%,$(obj)/%,\
 265         $(patsubst 3rdparty/%,$(obj)/%,\
 266         $(patsubst src/%,$(obj)/%,\
 267         $(patsubst %.ads,%.ali,\
 268         $(patsubst %.adb,%.ali,\
 269         $(subst .$(1),,\
 270         $(filter %.ads %.adb,$(2)))))))))
 271
 272 # Clean -y variables, include Makefile.inc
 273 # Add paths to files in X-y to X-srcs
 274 # Add subdirs-y to subdirs
 275 includemakefiles= \
 276         $(if $(wildcard $(1)), \
 277                 $(foreach class,classes subdirs $(classes) $(special-classes), $(eval $(class)-y:=)) \
 278                 $(eval -include $(1)) \
 279                 $(foreach class,$(classes-y), $(call add-class,$(class))) \
 280                 $(foreach special,$(special-classes), \
 281                         $(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
 282                 $(foreach class,$(classes), \
 283                         $(eval $(class)-srcs+= \
 284                                 $$(subst $(absobj)/,$(obj)/, \
 285                                 $$(subst $(top)/,, \
 286                                 $$(abspath $$(subst $(dir $(1))/,/,$$(addprefix $(dir $(1)),$$($(class)-y)))))))) \
 287                 $(eval subdirs+=$$(subst $(CURDIR)/,,$$(wildcard $$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))))
 288
 289 # For each path in $(subdirs) call includemakefiles
 290 # Repeat until subdirs is empty
 291 evaluate_subdirs= \
 292         $(eval cursubdirs:=$(subdirs)) \
 293         $(eval subdirs:=) \
 294         $(foreach dir,$(cursubdirs), \
 295                 $(eval $(call includemakefiles,$(dir)/Makefile.inc))) \
 296         $(if $(subdirs),$(eval $(call evaluate_subdirs)))
 297
 298 # collect all object files eligible for building
 299 subdirs:=$(TOPLEVEL)
 300 postinclude-hooks :=
 301
 302 # Don't iterate through Makefile.incs under src/ when building tests
 303 ifneq ($(UNIT_TEST),1)
 304 $(eval $(call evaluate_subdirs))
 305 else
 306 include $(TOPLEVEL)/tests/Makefile.inc
 307 endif
 308
 309 ifeq ($(FAILBUILD),1)
 310 $(error cannot continue build)
 311 endif
 312
 313 # Run hooks registered by subdirectories that need to be evaluated after all files have been parsed
 314 $(eval $(postinclude-hooks))
 315
 316 # Eliminate duplicate mentions of source files in a class
 317 $(foreach class,$(classes),$(eval $(class)-srcs:=$(sort $($(class)-srcs))))
 318
 319 ifeq ($(CONFIG_IWYU),y)
 320 MAKEFLAGS += -k
 321 SAVE_IWYU_OUTPUT := 2>&1 | grep "should\|\#include\|---\|include-list\|^[[:blank:]]\?\'" | tee -a $$(obj)/iwyu.txt
 322 endif
 323
 324 # Build Kconfig .ads if necessary
 325 ifeq ($(CONFIG_ROMSTAGE_ADA),y)
 326 romstage-srcs += $(obj)/romstage/$(notdir $(KCONFIG_AUTOADS))
 327 endif
 328 ifeq ($(CONFIG_RAMSTAGE_ADA),y)
 329 ramstage-srcs += $(obj)/ramstage/$(notdir $(KCONFIG_AUTOADS))
 330 endif
 331
 332 # To track dependencies, we need all Ada specification (.ads) files in
 333 # *-srcs. Extract / filter all specification files that have a matching
 334 # body (.adb) file here (specifications without a body are valid sources
 335 # in Ada).
 336 $(foreach class,$(classes),$(eval $(class)-extra-specs := \
 337         $(filter \
 338                 $(addprefix %/,$(patsubst %.adb,%.ads,$(notdir $(filter %.adb,$($(class)-srcs))))), \
 339                 $(filter %.ads,$($(class)-srcs)))))
 340 $(foreach class,$(classes),$(eval $(class)-srcs := \
 341         $(filter-out $($(class)-extra-specs),$($(class)-srcs))))
 342
 343 $(foreach class,$(classes),$(eval $(class)-objs:=$(call src-to-obj,$(class),$($(class)-srcs))))
 344 $(foreach class,$(classes),$(eval $(class)-alis:=$(call src-to-ali,$(class),$($(class)-srcs))))
 345
 346 # For Ada includes
 347 $(foreach class,$(classes),$(eval $(class)-ada-dirs:=$(sort $(dir $(filter %.ads %.adb,$($(class)-srcs)) $($(class)-extra-specs)))))
 348
 349 # Save all objs before processing them (for dependency inclusion)
 350 originalobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 351
 352 # Call post-processors if they're defined
 353 $(foreach class,$(classes),\
 354         $(if $(value $(class)-postprocess),$(eval $(call $(class)-postprocess,$($(class)-objs)))))
 355
 356 allsrcs:=$(foreach var, $(addsuffix -srcs,$(classes)), $($(var)))
 357 allobjs:=$(foreach var, $(addsuffix -objs,$(classes)), $($(var)))
 358 alldirs:=$(sort $(abspath $(dir $(allobjs))))
 359
 360 # Reads dependencies from an Ada library information (.ali) file
 361 # Only basenames (with suffix) are preserved so we have to look the
 362 # paths up in $($(stage)-srcs).
 363 # $1 stage name
 364 # $2 ali file
 365 create_ada_deps=$$(if $(2),\
 366         gnat.adc \
 367         $$(filter \
 368                 $$(addprefix %/,$$(shell sed -ne's/^D \([^\t]\+\).*$$$$/\1/p' $(2) 2>/dev/null)), \
 369                 $$($(1)-srcs) $$($(1)-extra-specs)))
 370
 371 # macro to define template macros that are used by use_template macro
 372 define create_cc_template
 373 # $1 obj class
 374 # $2 source suffix (c, S, ld, ...)
 375 # $3 additional compiler flags
 376 # $4 additional dependencies
 377 ifn$(EMPTY)def $(1)-objs_$(2)_template
 378 de$(EMPTY)fine $(1)-objs_$(2)_template
 379 ifn$(EMPTY)eq ($(filter ads adb,$(2)),)
 380 $$(call src-to-obj,$1,$$(1).$2): $$(1).$2 $$(call create_ada_deps,$1,$$(call src-to-ali,$1,$$(1).$2)) $(4)
 381         @printf "    GCC        $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 382         $(GCC_$(1)) \
 383                 $$$$(ADAFLAGS_$(1)) $$$$(addprefix -I,$$$$($(1)-ada-dirs)) \
 384                 $(3) -c -o $$$$@ $$$$<
 385 el$(EMPTY)se
 386 $$(call src-to-obj,$1,$$(1).$2): $$(1).$2 $(KCONFIG_AUTOHEADER) $(4)
 387         @printf "    CC         $$$$(subst $$$$(obj)/,,$$$$(@))\n"
 388         $(CC_$(1)) \
 389                 -MMD $$$$(CPPFLAGS_$(1)) $$$$(CFLAGS_$(1)) -MT $$$$(@) \
 390                 $(3) -c -o $$$$@ $$$$< $(SAVE_IWYU_OUTPUT)
 391 end$(EMPTY)if
 392 en$(EMPTY)def
 393 end$(EMPTY)if
 394 endef
 395
 396 filetypes-of-class=$(subst .,,$(sort $(suffix $($(1)-srcs))))
 397 $(foreach class,$(classes), \
 398         $(foreach type,$(call filetypes-of-class,$(class)), \
 399                 $(eval $(class)-$(type)-ccopts += $(generic-$(type)-ccopts) $($(class)-generic-ccopts)) \
 400                 $(if $(generic-objs_$(type)_template_gen),$(eval $(call generic-objs_$(type)_template_gen,$(class))),\
 401                 $(eval $(call create_cc_template,$(class),$(type),$($(class)-$(type)-ccopts),$($(class)-$(type)-deps))))))
 402
 403 foreach-src=$(foreach file,$($(1)-srcs),$(eval $(call $(1)-objs_$(subst .,,$(suffix $(file)))_template,$(basename $(file)))))
 404 $(eval $(foreach class,$(classes),$(call foreach-src,$(class))))
 405
 406 # To supported complex package initializations, we need to call the
 407 # emitted code explicitly. gnatbind gathers all the calls for us
 408 # and exports them as a procedure $(stage)_adainit(). Every stage that
 409 # uses Ada code has to call it!
 410 define gnatbind_template
 411 # $1 class
 412 $$(obj)/$(1)/b__$(1).adb: $$$$(filter-out $$(obj)/$(1)/b__$(1).ali,$$$$($(1)-alis))
 413         @printf "    BIND       $$(subst $$(obj)/,,$$@)\n"
 414         # We have to give gnatbind a simple filename (without leading
 415         # path components) so just cd there.
 416         cd $$(dir $$@) && \
 417                 $$(GNATBIND_$(1)) -a -n \
 418                         --RTS=$$(absobj)/libgnat-$$(ARCH-$(1)-y)/ \
 419                         -L$(1)_ada -o $$(notdir $$@) \
 420                         $$(subst $$(dir $$@),,$$^)
 421 $$(obj)/$(1)/b__$(1).o: $$(obj)/$(1)/b__$(1).adb
 422         @printf "    GCC        $$(subst $$(obj)/,,$$@)\n"
 423         $(GCC_$(1)) $$(ADAFLAGS_$(1)) -c -o $$@ $$<
 424 $(1)-objs += $$(obj)/$(1)/b__$(1).o
 425 $($(1)-alis): %.ali: %.o ;
 426 endef
 427
 428 $(eval $(foreach class,$(filter-out libgnat-%,$(classes)), \
 429         $(if $($(class)-alis),$(call gnatbind_template,$(class)))))
 430
 431 DEPENDENCIES += $(addsuffix .d,$(basename $(allobjs)))
 432 -include $(DEPENDENCIES)
 433
 434 printall:
 435         @$(foreach class,$(classes), echo $(class)-objs: $($(class)-objs) | tr ' ' '\n'; echo; )
 436         @echo alldirs: $(alldirs) | tr ' ' '\n'; echo
 437         @echo allsrcs: $(allsrcs) | tr ' ' '\n'; echo
 438         @echo DEPENDENCIES: $(DEPENDENCIES) | tr ' ' '\n'; echo
 439         @$(foreach class,$(special-classes),echo $(class):'$($(class))' | tr ' ' '\n'; echo; )
 440 endif
 441
 442 ifndef NOMKDIR
 443 $(shell mkdir -p $(KCONFIG_SPLITCONFIG) $(objk)/lxdialog $(additional-dirs) $(alldirs))
 444 endif
 445
 446 $(obj)/project_filelist.txt:
 447         if [ -z "$(wildcard $(obj)/coreboot.rom)" ]; then \
 448                 echo "*** Error: Project must be built before generating file list ***"; \
 449                 exit 1; \
 450         fi
 451         find $(obj) -path "$(obj)/util" -prune -o -path "$(obj)/external" -prune -o -name "*.d" -exec cat {} \; | \
 452           sed "s|$(top)/||" | sed 's/[:\\]/ /g' | sed 's/ /\n/g' | sort | uniq | \
 453           grep -v '\.o$$' > $(obj)/project_filelist.txt
 454
 455 filelist: $(obj)/project_filelist.txt
 456         printf "\nFiles used in build:\n"
 457         cat $(obj)/project_filelist.txt
 458
 459 #works with either exuberant ctags or ctags.emacs
 460 ctags-project: clean-ctags $(obj)/project_filelist.txt
 461         cat $(obj)/project_filelist.txt | \
 462           xargs ctags -o tags
 463
 464 cscope-project: clean-cscope $(obj)/project_filelist.txt
 465         cat $(obj)/project_filelist.txt | xargs cscope -b
 466
 467 cscope:
 468         cscope -bR
 469
 470 sphinx:
 471         $(MAKE) -C Documentation sphinx
 472
 473 sphinx-lint:
 474         $(MAKE) SPHINXOPTS=-W -C Documentation sphinx
 475
 476 symlink:
 477         @echo "Creating Symbolic Links.."; \
 478         for link in $(SYMLINK_LIST); do \
 479                 SYMLINK=`cat $$link`; \
 480                 REALPATH=`realpath $$link`; \
 481                 if [ -L "$$SYMLINK" ]; then \
 482                         continue; \
 483                 elif [ ! -e "$$SYMLINK" ]; then \
 484                         echo -e "\tLINK $$SYMLINK -> $$(dirname $$REALPATH)"; \
 485                         ln -s $$(dirname $$REALPATH) $$SYMLINK; \
 486                 else \
 487                         echo -e "\tFAILED: $$SYMLINK exists"; \
 488                 fi \
 489         done
 490
 491 clean-symlink:
 492         @echo "Deleting symbolic link";\
 493         EXISTING_SYMLINKS=`find -L ./src -xtype l | grep -v 3rdparty`; \
 494         for link in $$EXISTING_SYMLINKS; do \
 495                 echo -e "\tUNLINK $$link"; \
 496                 rm "$$link"; \
 497         done
 498
 499 clean-for-update:
 500         rm -rf $(obj) .xcompile
 501
 502 clean: clean-for-update clean-utils clean-payloads
 503         rm -f .ccwrap
 504
 505 clean-cscope:
 506         rm -f cscope.out
 507
 508 clean-ctags:
 509         rm -f tags
 510
 511 clean-utils:
 512         $(foreach tool, $(TOOLLIST), \
 513                 $(MAKE) -C util/$(tool) clean MFLAGS= MAKEFLAGS= ;)
 514
 515 distclean-utils:
 516         $(foreach tool, $(TOOLLIST), \
 517                 $(MAKE) -C util/$(tool) distclean MFLAGS= MAKEFLAGS= ; \
 518                 rm -f /util/$(tool)/junit.xml;)
 519
 520 distclean: clean clean-ctags clean-cscope distclean-payloads distclean-utils
 521         rm -f .config .config.old ..config.tmp* .kconfig.d .tmpconfig* .ccwrap .xcompile
 522         rm -rf coreboot-builds coreboot-builds-chromeos
 523         rm -f abuild*.xml junit.xml* util/lint/junit.xml
 524
 525 .PHONY: $(PHONY) clean clean-for-update clean-cscope cscope distclean sphinx sphinx-lint
 526 .PHONY: ctags-project cscope-project clean-ctags symlink clean-symlink