1 #
   2 # Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
   3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4 #
   5 # This code is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License version 2 only, as
   7 # published by the Free Software Foundation.  Oracle designates this
   8 # particular file as subject to the "Classpath" exception as provided
   9 # by Oracle in the LICENSE file that accompanied this code.
  10 #
  11 # This code is distributed in the hope that it will be useful, but WITHOUT
  12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 # version 2 for more details (a copy is included in the LICENSE file that
  15 # accompanied this code).
  16 #
  17 # You should have received a copy of the GNU General Public License version
  18 # 2 along with this work; if not, write to the Free Software Foundation,
  19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20 #
  21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22 # or visit www.oracle.com if you need additional information or have any
  23 # questions.
  24 #
  25 
  26 ################################################################
  27 #
  28 # Setup common utility functions.
  29 #
  30 ################################################################
  31 
  32 ifndef _MAKEBASE_GMK
  33 _MAKEBASE_GMK := 1
  34 
  35 ifeq ($(wildcard $(SPEC)),)
  36   $(error MakeBase.gmk needs SPEC set to a proper spec.gmk)
  37 endif
  38 
  39 # By defining this pseudo target, make will automatically remove targets
  40 # if their recipe fails so that a rebuild is automatically triggered on the
  41 # next make invocation.
  42 .DELETE_ON_ERROR:
  43 
  44 ################################################################################
  45 # Definitions for special characters
  46 ################################################################################
  47 
  48 # When calling macros, the spaces between arguments are
  49 # often semantically important! Sometimes we need to subst
  50 # spaces and commas, therefore we need the following macros.
  51 X:=
  52 SPACE:=$(X) $(X)
  53 COMMA:=,
  54 DOLLAR:=$$
  55 HASH:=\#
  56 LEFT_PAREN:=(
  57 RIGHT_PAREN:=)
  58 SQUOTE:='
  59 #'
  60 DQUOTE:="
  61 #"
  62 define NEWLINE
  63 
  64 
  65 endef
  66 
  67 # In GNU Make 4.0 and higher, there is a file function for writing to files.
  68 ifeq (4.0, $(firstword $(sort 4.0 $(MAKE_VERSION))))
  69   HAS_FILE_FUNCTION := true
  70   CORRECT_FUNCTION_IN_RECIPE_EVALUATION := true
  71 endif
  72 
  73 
  74 # For convenience, MakeBase.gmk continues to include these separate files, at
  75 # least for now.
  76 
  77 include $(TOPDIR)/make/common/Utils.gmk
  78 include $(TOPDIR)/make/common/MakeIO.gmk
  79 include $(TOPDIR)/make/common/CopyFiles.gmk
  80 
  81 ################################################################################
  82 # Functions for timers
  83 ################################################################################
  84 
  85 # Store the build times in this directory.
  86 BUILDTIMESDIR=$(OUTPUTDIR)/make-support/build-times
  87 
  88 # Record starting time for build of a sub repository.
  89 define RecordStartTime
  90         $(DATE) '+%Y %m %d %H %M %S' | $(NAWK) '{ print $$1,$$2,$$3,$$4,$$5,$$6,($$4*3600+$$5*60+$$6) }' > $(BUILDTIMESDIR)/build_time_start_$(strip $1) && \
  91         $(DATE) '+%Y-%m-%d %H:%M:%S' > $(BUILDTIMESDIR)/build_time_start_$(strip $1)_human_readable
  92 endef
  93 
  94 # Record ending time and calculate the difference and store it in a
  95 # easy to read format. Handles builds that cross midnight. Expects
  96 # that a build will never take 24 hours or more.
  97 define RecordEndTime
  98         $(DATE) '+%Y %m %d %H %M %S' | $(NAWK) '{ print $$1,$$2,$$3,$$4,$$5,$$6,($$4*3600+$$5*60+$$6) }' > $(BUILDTIMESDIR)/build_time_end_$(strip $1)
  99         $(DATE) '+%Y-%m-%d %H:%M:%S' > $(BUILDTIMESDIR)/build_time_end_$(strip $1)_human_readable
 100         $(ECHO) `$(CAT) $(BUILDTIMESDIR)/build_time_start_$(strip $1)` `$(CAT) $(BUILDTIMESDIR)/build_time_end_$(strip $1)` $1 | \
 101             $(NAWK) '{ F=$$7; T=$$14; if (F > T) { T+=3600*24 }; D=T-F; H=int(D/3600); \
 102             M=int((D-H*3600)/60); S=D-H*3600-M*60; printf("%02d:%02d:%02d %s\n",H,M,S,$$15); }' \
 103             > $(BUILDTIMESDIR)/build_time_diff_$(strip $1)
 104 endef
 105 
 106 # Hook to be called when starting to execute a top-level target
 107 define TargetEnter
 108         $(PRINTF) "## Starting $(patsubst %-only,%,$@)\n"
 109         $(call RecordStartTime,$(patsubst %-only,%,$@))
 110 endef
 111 
 112 # Hook to be called when finish executing a top-level target
 113 define TargetExit
 114         $(call RecordEndTime,$(patsubst %-only,%,$@))
 115         $(PRINTF) "## Finished $(patsubst %-only,%,$@) (build time %s)\n\n" \
 116             "`$(CAT) $(BUILDTIMESDIR)/build_time_diff_$(patsubst %-only,%,$@) | $(CUT) -f 1 -d ' '`"
 117 endef
 118 
 119 ################################################################################
 120 
 121 # A file containing a way to uniquely identify the source code revision that
 122 # the build was created from
 123 SOURCE_REVISION_TRACKER := $(SUPPORT_OUTPUTDIR)/src-rev/source-revision-tracker
 124 
 125 # Locate all hg repositories included in the forest, as absolute paths
 126 FindAllReposAbs = \
 127     $(strip $(sort $(dir $(filter-out $(TOPDIR)/build/%, $(wildcard \
 128         $(addprefix $(TOPDIR)/, .hg */.hg */*/.hg */*/*/.hg */*/*/*/.hg) \
 129         $(addprefix $(TOPDIR)/, .git */.git */*/.git */*/*/.git */*/*/*/.git) \
 130     )))))
 131 
 132 # Locate all hg repositories included in the forest, as relative paths
 133 FindAllReposRel = \
 134     $(strip $(subst $(TOPDIR)/,.,$(patsubst $(TOPDIR)/%/, %, $(FindAllReposAbs))))
 135 
 136 ################################################################################
 137 
 138 define SetupLogging
 139   ifeq ($$(LOG_PROFILE_TIMES_FILE), true)
 140     ifeq ($$(IS_GNU_TIME), yes)
 141       SHELL :=  $$(BASH) $$(TOPDIR)/make/scripts/shell-profiler.sh \
 142                 gnutime $$(TIME) \
 143                 $$(OUTPUTDIR)/build-profile.log $$(SHELL)
 144     else ifneq ($$(FLOCK), )
 145       SHELL :=  $$(BASH) $$(TOPDIR)/make/scripts/shell-profiler.sh \
 146                 flock $$(FLOCK) \
 147                 $$(OUTPUTDIR)/build-profile.log $$(SHELL)
 148     endif
 149   endif
 150 
 151   ifeq ($$(LOG_LEVEL), trace)
 152     SHELL_NO_RECURSE := $$(SHELL)
 153     # Shell redefinition trick inspired by http://www.cmcrossroads.com/ask-mr-make/6535-tracing-rule-execution-in-gnu-make
 154     # For each target executed, will print
 155     # Building <TARGET> (from <FIRST PREREQUISITE>) (<ALL NEWER PREREQUISITES> newer)
 156     # but with a limit of 20 on <ALL NEWER PREREQUISITES>, to avoid cluttering logs too much
 157     # (and causing a crash on Cygwin).
 158     SHELL = $$(warning $$(if $$@,Building $$@,Running shell command) $$(if $$<, (from $$<))$$(if $$?, ($$(wordlist 1, 20, $$?) $$(if $$(wordlist 21, 22, $$?), ... [in total $$(words $$?) files]) newer)))$$(SHELL_NO_RECURSE) -x
 159   endif
 160 
 161   # The warn level can never be turned off
 162   LogWarn = $$(info $$(strip $$1))
 163   LOG_WARN :=
 164   ifneq ($$(findstring $$(LOG_LEVEL), info debug trace),)
 165     LogInfo = $$(info $$(strip $$1))
 166     LOG_INFO :=
 167   else
 168     LogInfo =
 169     LOG_INFO := > /dev/null
 170   endif
 171   ifneq ($$(findstring $$(LOG_LEVEL), debug trace),)
 172     LogDebug = $$(info $$(strip $$1))
 173     LOG_DEBUG :=
 174   else
 175     LogDebug =
 176     LOG_DEBUG := > /dev/null
 177   endif
 178   ifneq ($$(findstring $$(LOG_LEVEL), trace),)
 179     LogTrace = $$(info $$(strip $$1))
 180     LOG_TRACE :=
 181   else
 182     LogTrace =
 183     LOG_TRACE := > /dev/null
 184   endif
 185 endef
 186 
 187 # Make sure logging is setup for everyone that includes MakeBase.gmk.
 188 $(eval $(call SetupLogging))
 189 
 190 ################################################################################
 191 
 192 MAX_PARAMS := 36
 193 PARAM_SEQUENCE := $(call sequence, 2, $(MAX_PARAMS))
 194 
 195 # Template for creating a macro taking named parameters. To use it, assign the
 196 # template to a variable with the name you want for your macro, using '='
 197 # assignment. Then define a macro body with the suffix "Body". The Body macro
 198 # should take 1 parameter which should be a unique string for that invocation
 199 # of the macro.
 200 # Ex:
 201 # SetupFoo = $(NamedParamsMacroTemplate)
 202 # define SetupFooBody
 203 #   # do something
 204 #   # access parameters as $$($1_BAR)
 205 # endef
 206 # Call it like this
 207 # $(eval $(call SetupFoo, BUILD_SOMETHING, \
 208 #     BAR := some parameter value, \
 209 # ))
 210 define NamedParamsMacroTemplate
 211   $(if $($(MAX_PARAMS)),$(error Internal makefile error: \
 212       Too many named arguments to macro, please update MAX_PARAMS in MakeBase.gmk))
 213   # Iterate over 2 3 4... and evaluate the named parameters with $1_ as prefix
 214   $(foreach i,$(PARAM_SEQUENCE), $(if $(strip $($i)),\
 215     $(strip $1)_$(strip $(call EscapeHash, $(call DoubleDollar, $($i))))$(NEWLINE)))
 216   # Debug print all named parameter names and values
 217   $(if $(findstring $(LOG_LEVEL),debug trace), \
 218     $(info $0 $(strip $1) $(foreach i,$(PARAM_SEQUENCE), \
 219       $(if $(strip $($i)),$(NEWLINE) $(strip [$i] $(if $(filter $(LOG_LEVEL), trace), \
 220         $($i), $(wordlist 1, 20, $($(i))) $(if $(word 21, $($(i))), ...)))))))
 221 
 222   $(if $(DEBUG_$(strip $1)),
 223     $(info -------- <<< Begin expansion of $(strip $1)) \
 224     $(info $(call $(0)Body,$(strip $1))) \
 225     $(info -------- >>> End expansion of $(strip $1)) \
 226   )
 227 
 228   $(call $(0)Body,$(strip $1))
 229 endef
 230 
 231 ################################################################################
 232 # Make directory without forking mkdir if not needed.
 233 #
 234 # If a directory with an encoded space is provided, the wildcard function
 235 # sometimes returns false answers (typically if the dir existed when the
 236 # makefile was parsed, but was deleted by a previous rule). In that case, always
 237 # call mkdir regardless of what wildcard says.
 238 #
 239 # 1: List of directories to create
 240 MakeDir = \
 241     $(strip \
 242         $(eval MakeDir_dirs_to_make := $(strip $(foreach d, $1, \
 243           $(if $(findstring ?, $d), '$(call DecodeSpace, $d)', \
 244             $(if $(wildcard $d), , $d) \
 245           ) \
 246         ))) \
 247         $(if $(MakeDir_dirs_to_make), $(shell $(MKDIR) -p $(MakeDir_dirs_to_make))) \
 248     )
 249 
 250 # Make directory for target file. Should handle spaces in filenames. Just
 251 # calling $(call MakeDir $(@D)) will not work if the directory contains a space
 252 # and the target file already exists. In that case, the target file will have
 253 # its wildcard ? resolved and the $(@D) will evaluate each space separated dir
 254 # part on its own.
 255 MakeTargetDir = \
 256     $(call MakeDir, $(dir $(call EncodeSpace, $@)))
 257 
 258 ################################################################################
 259 # All install-file and related macros automatically call DecodeSpace when needed.
 260 
 261 ifeq ($(call isTargetOs, solaris), true)
 262   # On Solaris, if the target is a symlink and exists, cp won't overwrite.
 263   # Cp has to operate in recursive mode to allow for -P flag, to preserve soft links. If the
 264   # name of the target file differs from the source file, rename after copy.
 265   # If the source and target parent directories are the same, recursive copy doesn't work
 266   # so we fall back on regular copy, which isn't preserving symlinks.
 267   define install-file
 268         $(call MakeTargetDir)
 269         $(RM) '$(call DecodeSpace, $@)'
 270         if [ '$(call DecodeSpace, $(dir $(call EncodeSpace, $@)))' != \
 271             '$(call DecodeSpace, $(dir $(call EncodeSpace, $<)))' ]; then \
 272           $(CP) -f -r -P '$(call DecodeSpace, $<)' \
 273               '$(call DecodeSpace, $(dir $(call EncodeSpace, $@)))'; \
 274           if [ '$(call DecodeSpace, $(notdir $(call EncodeSpace, $@)))' != \
 275               '$(call DecodeSpace, $(notdir $(call EncodeSpace, $(<))))' ]; then \
 276             $(MV) '$(call DecodeSpace, $(dir $(call EncodeSpace, $@))/$(notdir $(call EncodeSpace, $<)))' \
 277                 '$(call DecodeSpace, $@)'; \
 278           fi; \
 279         else \
 280           if [ -L '$(call DecodeSpace, $<)' ]; then \
 281             $(ECHO) "Source file is a symlink and target is in the same directory: $< $@" ; \
 282             exit 1; \
 283           fi; \
 284           $(CP) -f '$(call DecodeSpace, $<)' '$(call DecodeSpace, $@)'; \
 285         fi
 286   endef
 287 else ifeq ($(call isTargetOs, macosx), true)
 288   # On mac, extended attributes sometimes creep into the source files, which may later
 289   # cause the creation of ._* files which confuses testing. Clear these with xattr if
 290   # set. Some files get their write permissions removed after being copied to the
 291   # output dir. When these are copied again to images, xattr would fail. By only clearing
 292   # attributes when they are present, failing on this is avoided.
 293   #
 294   # If copying a soft link to a directory, need to delete the target first to avoid
 295   # weird errors.
 296   define install-file
 297         $(call MakeTargetDir)
 298         $(RM) '$(call DecodeSpace, $@)'
 299         # Work around a weirdness with cp on Macosx. When copying a symlink, if
 300         # the target of the link is write protected (e.g. 444), cp will add
 301         # write permission for the user on the target file (644). Avoid this by
 302         # using ln to create a new link instead.
 303         if [ -h '$(call DecodeSpace, $<)' ]; then \
 304           $(LN) -s "`$(READLINK) '$(call DecodeSpace, $<)'`" '$(call DecodeSpace, $@)'; \
 305         else \
 306           $(CP) -fRP '$(call DecodeSpace, $<)' '$(call DecodeSpace, $@)'; \
 307         fi
 308         if [ -n "`$(XATTR) -ls '$(call DecodeSpace, $@)'`" ]; then \
 309           $(XATTR) -cs '$(call DecodeSpace, $@)'; \
 310         fi
 311   endef
 312 else
 313   define install-file
 314         $(call MakeTargetDir)
 315         $(CP) -fP '$(call DecodeSpace, $<)' '$(call DecodeSpace, $@)'
 316   endef
 317 endif
 318 
 319 # Variant of install file that does not preserve symlinks
 320 define install-file-nolink
 321         $(call MakeTargetDir)
 322         $(CP) -f '$(call DecodeSpace, $<)' '$(call DecodeSpace, $@)'
 323 endef
 324 
 325 ################################################################################
 326 # link-file-* works similarly to install-file but creates a symlink instead.
 327 # There are two versions, either creating a relative or an absolute link. Be
 328 # careful when using this on Windows since the symlink created is only valid in
 329 # the unix emulation environment.
 330 define link-file-relative
 331         $(call MakeTargetDir)
 332         $(RM) '$(call DecodeSpace, $@)'
 333         $(LN) -s '$(call DecodeSpace, $(call RelativePath, $<, $(@D)))' '$(call DecodeSpace, $@)'
 334 endef
 335 
 336 define link-file-absolute
 337         $(call MakeTargetDir)
 338         $(RM) '$(call DecodeSpace, $@)'
 339         $(LN) -s '$(call DecodeSpace, $<)' '$(call DecodeSpace, $@)'
 340 endef
 341 
 342 ################################################################################
 343 
 344 ifneq ($(DISABLE_CACHE_FIND), true)
 345   # In Cygwin, finds are very costly, both because of expensive forks and because
 346   # of bad file system caching. Find is used extensively in $(shell) commands to
 347   # find source files. This makes rerunning make with no or few changes rather
 348   # expensive. To speed this up, these two macros are used to cache the results
 349   # of simple find commands for reuse.
 350   #
 351   # Runs a find and stores both the directories where it was run and the results.
 352   # This macro can be called multiple times to add to the cache. Only finds files
 353   # with no filters.
 354   #
 355   # Files containing space will get spaces replaced with ? because GNU Make
 356   # cannot handle lists of files with space in them. By using ?, make will match
 357   # the wildcard to space in many situations so we don't need to replace back
 358   # to space on every use. While not a complete solution it does allow some uses
 359   # of CacheFind to function with spaces in file names, including for
 360   # SetupCopyFiles.
 361   #
 362   # Needs to be called with $(eval )
 363   #
 364   # Even if the performance benifit is negligible on other platforms, keep the
 365   # functionality active unless explicitly disabled to exercise it more.
 366   #
 367   # Initialize FIND_CACHE_DIRS with := to make it a non recursively-expanded variable
 368   FIND_CACHE_DIRS :=
 369   # Param 1 - Dirs to find in
 370   # Param 2 - (optional) specialization. Normally "-a \( ... \)" expression.
 371   define FillCacheFind
 372     # Filter out already cached dirs. The - is needed when FIND_CACHE_DIRS is empty
 373     # since filter out will then return empty.
 374     FIND_CACHE_NEW_DIRS := $$(filter-out $$(addsuffix /%,\
 375         - $(FIND_CACHE_DIRS)) $(FIND_CACHE_DIRS), $1)
 376     ifneq ($$(FIND_CACHE_NEW_DIRS), )
 377       # Remove any trailing slash from dirs in the cache dir list
 378       FIND_CACHE_DIRS += $$(patsubst %/,%, $$(FIND_CACHE_NEW_DIRS))
 379       FIND_CACHE := $$(sort $$(FIND_CACHE) \
 380           $$(shell $(FIND) $$(wildcard $$(FIND_CACHE_NEW_DIRS)) \
 381               \( -type f -o -type l \) $2 | $(TR) ' ' '?'))
 382     endif
 383   endef
 384 
 385   # Mimics find by looking in the cache if all of the directories have been cached.
 386   # Otherwise reverts to shell find. This is safe to call on all platforms, even if
 387   # cache is deactivated.
 388   #
 389   # $1 can be either a directory or a file. If it's a directory, make
 390   # sure we have exactly one trailing slash before the wildcard.
 391   # The extra - is needed when FIND_CACHE_DIRS is empty but should be harmless.
 392   #
 393   # Param 1 - Dirs to find in
 394   # Param 2 - (optional) specialization. Normally "-a \( ... \)" expression.
 395   # Param 3 - (optional) options to find.
 396   define CacheFind
 397     $(if $(filter-out $(addsuffix /%,- $(FIND_CACHE_DIRS)) $(FIND_CACHE_DIRS),$1), \
 398       $(if $(wildcard $1), $(shell $(FIND) $3 $(wildcard $1) \( -type f -o -type l \) $2 \
 399           | $(TR) ' ' '?')), \
 400       $(filter $(addsuffix /%,$(patsubst %/,%,$1)) $1,$(FIND_CACHE)))
 401   endef
 402 
 403 else
 404   # If CacheFind is disabled, just run the find command.
 405   # Param 1 - Dirs to find in
 406   # Param 2 - (optional) specialization. Normally "-a \( ... \)" expression.
 407   define CacheFind
 408     $(if $(wildcard $1, \
 409       $(shell $(FIND) $(wildcard $1) \( -type f -o -type l \) $2 | $(TR) ' ' '?') \
 410     )
 411   endef
 412 endif
 413 
 414 ################################################################################
 415 # FixPath
 416 #
 417 # On Windows, converts a path from cygwin/unix style (e.g. /bin/foo) into
 418 # "mixed mode" (e.g. c:/cygwin/bin/foo). On other platforms, return the path
 419 # unchanged.
 420 # This is normally not needed since we use the FIXPATH prefix for command lines,
 421 # but might be needed in certain circumstances.
 422 ifeq ($(call isTargetOs, windows), true)
 423   FixPath = \
 424       $(shell $(CYGPATH) -m $1)
 425 else
 426   FixPath = \
 427       $1
 428 endif
 429 
 430 ################################################################################
 431 # DependOnVariable
 432 #
 433 # This macro takes a variable name and puts the value in a file only if the
 434 # value has changed since last. The name of the file is returned. This can be
 435 # used to create rule dependencies on make variable values. The following
 436 # example would get rebuilt if the value of SOME_VAR was changed:
 437 #
 438 # path/to/some-file: $(call DependOnVariable, SOME_VAR)
 439 #         echo $(SOME_VAR) > $@
 440 #
 441 # Note that leading and trailing white space in the value is ignored.
 442 #
 443 
 444 # Defines the sub directory structure to store variable value file in
 445 DependOnVariableDirName = \
 446     $(strip $(addsuffix $(if $(MODULE),/$(MODULE)), \
 447         $(subst $(TOPDIR)/,, $(if $(filter /%, $(firstword $(MAKEFILE_LIST))), \
 448           $(firstword $(MAKEFILE_LIST)), \
 449           $(CURDIR)/$(firstword $(MAKEFILE_LIST))))))
 450 
 451 # Defines the name of the file to store variable value in. Generates a name
 452 # unless parameter 2 is given.
 453 # Param 1 - Name of variable
 454 # Param 2 - (optional) name of file to store value in
 455 DependOnVariableFileName = \
 456     $(strip $(if $(strip $2), $2, \
 457       $(MAKESUPPORT_OUTPUTDIR)/vardeps/$(DependOnVariableDirName)/$(strip $1).vardeps))
 458 
 459 # Does the actual work with parameters stripped.
 460 # If the file exists AND the contents is the same as the variable, do nothing
 461 # else print a new file.
 462 # Always returns the name of the file where the value was printed.
 463 # Param 1 - Name of variable
 464 # Param 2 - (optional) name of file to store value in
 465 DependOnVariableHelper = \
 466     $(strip \
 467         $(eval -include $(call DependOnVariableFileName, $1, $2)) \
 468         $(if $(call equals, $(strip $($1)), $(strip $($1_old))),,\
 469           $(call MakeDir, $(dir $(call DependOnVariableFileName, $1, $2))) \
 470           $(if $(findstring $(LOG_LEVEL), trace), \
 471               $(info NewVariable $1: >$(strip $($1))<) \
 472               $(info OldVariable $1: >$(strip $($1_old))<)) \
 473           $(call WriteFile, $1_old:=$(call DoubleDollar,$(call EscapeHash,$($1))), \
 474               $(call DependOnVariableFileName, $1, $2))) \
 475         $(call DependOnVariableFileName, $1, $2) \
 476     )
 477 
 478 # Main macro
 479 # Param 1 - Name of variable
 480 # Param 2 - (optional) name of file to store value in
 481 DependOnVariable = \
 482     $(call DependOnVariableHelper,$(strip $1),$(strip $2))
 483 
 484 # LogCmdlines is only intended to be used by ExecuteWithLog
 485 ifeq ($(LOG_CMDLINES), true)
 486   LogCmdlines = $(info $(strip $1))
 487 else
 488   LogCmdlines =
 489 endif
 490 
 491 ################################################################################
 492 # ExecuteWithLog will run a command and log the output appropriately. This is
 493 # meant to be used by commands that do "real" work, like a compilation.
 494 # The output is stored in a specified log file, which is displayed at the end
 495 # of the build in case of failure. The  command line itself is stored in a file,
 496 # and also logged to stdout if the LOG=cmdlines option has been given.
 497 #
 498 # NOTE: If the command redirects stdout, the caller needs to wrap it in a
 499 # subshell (by adding parentheses around it), otherwise the redirect to the
 500 # subshell tee process will create a race condition where the target file may
 501 # not be fully written when the make recipe is done.
 502 #
 503 # Param 1 - The path to base the name of the log file / command line file on
 504 # Param 2 - The command to run
 505 ExecuteWithLog = \
 506   $(call LogCmdlines, Exececuting: [$(strip $2)]) \
 507   $(call MakeDir, $(dir $(strip $1))) \
 508   $(call WriteFile, $2, $(strip $1).cmdline) \
 509   ( $(RM) $(strip $1).log && $(strip $2) > >($(TEE) -a $(strip $1).log) 2> >($(TEE) -a $(strip $1).log >&2) || \
 510       ( exitcode=$(DOLLAR)? && \
 511       $(CP) $(strip $1).log $(MAKESUPPORT_OUTPUTDIR)/failure-logs/$(subst /,_,$(patsubst $(OUTPUTDIR)/%,%,$(strip $1))).log && \
 512       $(CP) $(strip $1).cmdline $(MAKESUPPORT_OUTPUTDIR)/failure-logs/$(subst /,_,$(patsubst $(OUTPUTDIR)/%,%,$(strip $1))).cmdline && \
 513       exit $(DOLLAR)exitcode ) )
 514 
 515 ################################################################################
 516 
 517 # Hook to include the corresponding custom file, if present.
 518 $(eval $(call IncludeCustomExtension, common/MakeBase.gmk))
 519 
 520 endif # _MAKEBASE_GMK