#

# Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

################################################################

#

# Setup common utility functions.

#

################################################################

ifndef _MAKEBASE_GMK

_MAKEBASE_GMK := 1

ifeq ($(wildcard $(SPEC)),)

  $(error MakeBase.gmk needs SPEC set to a proper spec.gmk)

endif

# By defining this pseudo target, make will automatically remove targets

# if their recipe fails so that a rebuild is automatically triggered on the

# next make invocation.

.DELETE_ON_ERROR:

################################################################################

# Definitions for special characters

################################################################################

# When calling macros, the spaces between arguments are

# often semantically important! Sometimes we need to subst

# spaces and commas, therefore we need the following macros.

X:=

SPACE:=$(X) $(X)

COMMA:=,

DOLLAR:=$$

HASH:=\#

LEFT_PAREN:=(

RIGHT_PAREN:=)

SQUOTE:='

#'

DQUOTE:="

#"

define NEWLINE

endef

# In GNU Make 4.0 and higher, there is a file function for writing to files.

ifeq (4.0, $(firstword $(sort 4.0 $(MAKE_VERSION))))

  HAS_FILE_FUNCTION := true

endif

##############################

# Functions

##############################

### Debug functions

# Prints the name and value of a variable

PrintVar = \

    $(info $(strip $1) >$($(strip $1))<)

### Functions for timers

# Store the build times in this directory.

BUILDTIMESDIR=$(OUTPUT_ROOT)/make-support/build-times

# Record starting time for build of a sub repository.

define RecordStartTime

	$(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) && \

	$(DATE) '+%Y-%m-%d %H:%M:%S' > $(BUILDTIMESDIR)/build_time_start_$(strip $1)_human_readable

endef

# Record ending time and calculate the difference and store it in a

# easy to read format. Handles builds that cross midnight. Expects

# that a build will never take 24 hours or more.

define RecordEndTime

	$(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)

	$(DATE) '+%Y-%m-%d %H:%M:%S' > $(BUILDTIMESDIR)/build_time_end_$(strip $1)_human_readable

	$(ECHO) `$(CAT) $(BUILDTIMESDIR)/build_time_start_$(strip $1)` `$(CAT) $(BUILDTIMESDIR)/build_time_end_$(strip $1)` $1 | \

	    $(NAWK) '{ F=$$7; T=$$14; if (F > T) { T+=3600*24 }; D=T-F; H=int(D/3600); \

	    M=int((D-H*3600)/60); S=D-H*3600-M*60; printf("%02d:%02d:%02d %s\n",H,M,S,$$15); }' \

	    > $(BUILDTIMESDIR)/build_time_diff_$(strip $1)

endef

# Hook to be called when starting to execute a top-level target

define TargetEnter

	$(PRINTF) "## Starting $(patsubst %-only,%,$@)\n"

	$(call RecordStartTime,$(patsubst %-only,%,$@))

endef

# Hook to be called when finish executing a top-level target

define TargetExit

	$(call RecordEndTime,$(patsubst %-only,%,$@))

	$(PRINTF) "## Finished $(patsubst %-only,%,$@) (build time %s)\n\n" \

	    "`$(CAT) $(BUILDTIMESDIR)/build_time_diff_$(patsubst %-only,%,$@) | $(CUT) -f 1 -d ' '`"

endef

################################################################################

# This macro translates $ into \$ to protect the $ from expansion in the shell.

# To make this macro resilient against already escaped strings, first remove

# any present escapes before escaping so that no double escapes are added.

EscapeDollar = $(subst $$,\$$,$(subst \$$,$$,$(strip $1)))

################################################################################

# This macro translates $ into $$ to protect the string from make itself.

DoubleDollar = $(subst $$,$$$$,$(strip $1))

################################################################################

# ListPathsSafely can be used to print command parameters to a file. This is

# typically done if the command line lenght risk being too long for the

# OS/shell. In later make versions, the file function can be used for this

# purpose. For earlier versions, a more complex implementation is provided.

#

# The function ListPathsSafely can be called either directly or, more commonly

# from a recipe line. If called from a recipe, it will be executed in the

# evaluation phase of that recipe, which means that it will write to the file

# before any other line in the recipe has been run.

ifeq ($(HAS_FILE_FUNCTION), true)

  # Param 1 - Name of variable containing paths/arguments to output

  # Param 2 - File to print to

  # Param 3 - Set to true to append to file instead of overwriting

  define ListPathsSafely

    $$(call MakeDir, $$(dir $$(strip $2)))

    $$(file $$(if $$(filter true, $$(strip $3)),>>,>) \

        $$(strip $2),$$(subst $$(SPACE),$$(NEWLINE),$$(strip $$($$(strip $1)))))

  endef

else # HAS_FILE_FUNCTION = false

  $(eval compress_paths = \

      $(strip $(shell $(CAT) $(SRC_ROOT)/make/common/support/ListPathsSafely-pre-compress.incl)))

  compress_paths += \

      $(subst $(SRC_ROOT),X97, \

      $(subst $(OUTPUT_ROOT),X98, \

      $(subst X,X00, \

      $(subst $(SPACE),\n,$(strip $1)))))

  $(eval compress_paths += \

      $(strip $(shell $(CAT) $(SRC_ROOT)/make/common/support/ListPathsSafely-post-compress.incl)))

  decompress_paths=$(SED) -f $(SRC_ROOT)/make/common/support/ListPathsSafely-uncompress.sed \

      -e 's|X99|\\n|g' \

      -e 's|X98|$(OUTPUT_ROOT)|g' -e 's|X97|$(SRC_ROOT)|g' \

      -e 's|X00|X|g'

  ListPathsSafely_IfPrintf = \

      $(if $(word $3,$($(strip $1))), \

          $(shell $(PRINTF) -- "$(strip $(call EscapeDollar, \

              $(call compress_paths, $(wordlist $3,$4,$($(strip $1))))))\n" \

              | $(decompress_paths) >> $2))

  # Param 1 - Name of variable containing paths/arguments to output

  # Param 2 - File to print to

  # Param 3 - Set to true to append to file instead of overwriting

  define ListPathsSafely

    ifneq (,$$(word 30001,$$($$(strip $1))))

      $$(error Cannot list safely more than 30000 paths. $1 has $$(words $$($$(strip $1))) paths!)

    endif

    $$(call MakeDir, $$(dir $2))

    ifneq ($$(strip $3), true)

      $$(shell $(RM) $$(strip $2))

    endif

    $$(call ListPathsSafely_IfPrintf,$1,$2,1,250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,251,500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,501,750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,751,1000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,1001,1250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,1251,1500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,1501,1750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,1751,2000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,2001,2250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,2251,2500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,2501,2750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,2751,3000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,3001,3250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,3251,3500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,3501,3750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,3751,4000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,4001,4250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,4251,4500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,4501,4750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,4751,5000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,5001,5250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,5251,5500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,5501,5750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,5751,6000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,6001,6250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,6251,6500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,6501,6750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,6751,7000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,7001,7250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,7251,7500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,7501,7750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,7751,8000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,8001,8250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,8251,8500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,8501,8750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,8751,9000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,9001,9250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,9251,9500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,9501,9750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,9751,10000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,10001,10250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,10251,10500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,10501,10750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,10751,11000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,11001,11250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,11251,11500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,11501,11750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,11751,12000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,12001,12250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,12251,12500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,12501,12750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,12751,13000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,13001,13250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,13251,13500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,13501,13750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,13751,14000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,14001,14250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,14251,14500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,14501,14750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,14751,15000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,15001,15250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,15251,15500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,15501,15750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,15751,16000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,16001,16250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,16251,16500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,16501,16750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,16751,17000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,17001,17250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,17251,17500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,17501,17750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,17751,18000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,18001,18250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,18251,18500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,18501,18750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,18751,19000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,19001,19250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,19251,19500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,19501,19750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,19751,20000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,20001,20250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,20251,20500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,20501,20750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,20751,21000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,21001,21250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,21251,21500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,21501,21750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,21751,22000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,22001,22250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,22251,22500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,22501,22750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,22751,23000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,23001,23250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,23251,23500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,23501,23750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,23751,24000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,24001,24250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,24251,24500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,24501,24750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,24751,25000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,25001,25250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,25251,25500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,25501,25750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,25751,26000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,26001,26250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,26251,26500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,26501,26750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,26751,27000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,27001,27250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,27251,27500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,27501,27750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,27751,28000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,28001,28250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,28251,28500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,28501,28750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,28751,29000)

    $$(call ListPathsSafely_IfPrintf,$1,$2,29001,29250)

    $$(call ListPathsSafely_IfPrintf,$1,$2,29251,29500)

    $$(call ListPathsSafely_IfPrintf,$1,$2,29501,29750)

    $$(call ListPathsSafely_IfPrintf,$1,$2,29751,30000)

  endef

endif # HAS_FILE_FUNCTION

################################################################################

# The source tips can come from the Mercurial repository, or in the files

# $(HGTIP_FILENAME) which contains the tip but is also positioned in the same

# directory as the original $(HGDIR) directory.

# These should not be := assignments, only used from the root Makefile.

HG_VERSION = $(shell $(HG) version 2> /dev/null)

HG_DIRECTORY=.hg

HGTIP_FILENAME=.hgtip

HG_SEARCH = ./REPO ./*/REPO ./*/*/REPO ./*/*/*/REPO

REPO_LIST = $(patsubst ./%,%,$(patsubst %/,%,$(sort $(dir \

    $(shell $(CD) $(SRC_ROOT) ; \

        $(LS) -d $(HG_SEARCH:%/REPO=%/$(HG_DIRECTORY)) \

            $(HG_SEARCH:%/REPO=%/$(HGTIP_FILENAME)) \

        2> /dev/null)))))

# Emit the repo:tip pairs to $@, but only if they changed since last time

define GetSourceTips

	$(CD) $(SRC_ROOT) ; \

	for i in $(REPO_LIST) IGNORE ; do \

	  if [ "$${i}" = "IGNORE" ] ; then \

	    continue; \

	  elif [ -d $${i}/$(HG_DIRECTORY) -a "$(HG_VERSION)" != "" ] ; then \

	    $(PRINTF) " %s:%s" \

	        "$${i}" `$(HG) tip --repository $${i} --template '{node|short}\n'` ; \

	  elif [ -f $${i}/$(HGTIP_FILENAME) ] ; then \

	    $(PRINTF) " %s:%s" \

	        "$${i}" `$(CAT) $${i}/$(HGTIP_FILENAME)` ; \

	  fi; \

	done > $@.tmp

	$(PRINTF) "\n" >> $@.tmp

	if [ ! -f $@ ] || [ "`$(CAT) $@`" != "`$(CAT) $@.tmp`" ]; then \

	  $(MV) $@.tmp $@ ; \

	else \

	  $(RM) $@.tmp ; \

	fi

endef

# Create the HGTIP_FILENAME file. Called from closed/make/SourceBundles.gmk

define CreateHgTip

	$(HG) tip --repository $1 --template '{node|short}\n' > $1/$(HGTIP_FILENAME); \

	$(ECHO) $1/$(HGTIP_FILENAME)

endef

################################################################################

define SetupLogging

  ifeq ($$(LOG_LEVEL), trace)

    # Shell redefinition trick inspired by http://www.cmcrossroads.com/ask-mr-make/6535-tracing-rule-execution-in-gnu-make

    # For each target executed, will print

    # Building <TARGET> (from <FIRST PREREQUISITE>) (<ALL NEWER PREREQUISITES> newer)

    # but with a limit of 20 on <ALL NEWER PREREQUISITES>, to avoid cluttering logs too much

    # (and causing a crash on Cygwin).

    # Default shell seems to always be /bin/sh. Must override with bash to get this to work on Solaris.

    # Only use time if it's GNU time which supports format and output file.

    WRAPPER_SHELL := $$(BASH) $$(SRC_ROOT)/common/bin/shell-tracer.sh $$(if $$(findstring yes,$$(IS_GNU_TIME)),$$(TIME),-) $$(OUTPUT_ROOT)/build-trace-time.log $$(SHELL)

    SHELL = $$(warning $$(if $$@,Building $$@,Running shell command) $$(if $$<, (from $$<))$$(if $$?, ($$(wordlist 1, 20, $$?) $$(if $$(wordlist 21, 22, $$?), ... [in total $$(words $$?) files]) newer)))$$(WRAPPER_SHELL)

  endif

  # The warn level can never be turned off

  LogWarn = $$(info $$(strip $$1))

  LOG_WARN :=

  ifneq ($$(findstring $$(LOG_LEVEL), info debug trace),)

    LogInfo = $$(info $$(strip $$1))

    LOG_INFO :=

  else

    LogInfo =

    LOG_INFO := > /dev/null

  endif

  ifneq ($$(findstring $$(LOG_LEVEL), debug trace),)

    LogDebug = $$(info $$(strip $$1))

    LOG_DEBUG :=

  else

    LogDebug =

    LOG_DEBUG := > /dev/null

  endif

  ifneq ($$(findstring $$(LOG_LEVEL), trace),)

    LogTrace = $$(info $$(strip $$1))

    LOG_TRACE :=

  else

    LogTrace =

    LOG_TRACE := > /dev/null

  endif

endef

# Make sure logging is setup for everyone that includes MakeBase.gmk.

$(eval $(call SetupLogging))

################################################################################

# Creates a sequence of increasing numbers (inclusive).

# Param 1 - starting number

# Param 2 - ending number

sequence = \

    $(wordlist $1, $2, $(strip \

        $(eval SEQUENCE_COUNT :=) \

        $(call _sequence-do,$(strip $2))))

_sequence-do = \

    $(if $(word $1, $(SEQUENCE_COUNT)),, \

      $(eval SEQUENCE_COUNT += .) \

      $(words $(SEQUENCE_COUNT)) \

      $(call _sequence-do,$1))

################################################################################

MAX_PARAMS := 35

PARAM_SEQUENCE := $(call sequence, 2, $(MAX_PARAMS))

# Template for creating a macro taking named parameters. To use it, assign the

# template to a variable with the name you want for your macro, using '='

# assignment. Then define a macro body with the suffix "Body". The Body macro

# should take 1 parameter which should be a unique string for that invocation

# of the macro.

# Ex:

# SetupFoo = $(NamedParamsMacroTemplate)

# define SetupFooBody

#   # do something

#   # access parameters as $$($1_BAR)

# endef

# Call it like this

# $(eval $(call SetupFoo, BUILD_SOMETHING, \

#     BAR := some parameter value, \

# ))

define NamedParamsMacroTemplate

  $(if $($(MAX_PARAMS)),$(error Internal makefile error: \

      Too many named arguments to macro, please update MAX_PARAMS in MakeBase.gmk))

  # Iterate over 2 3 4... and evaluate the named parameters with $1_ as prefix

  $(foreach i,$(PARAM_SEQUENCE), $(if $(strip $($i)),\

    $(strip $1)_$(strip $($i)))$(NEWLINE))

  # Debug print all named parameter names and values

  $(if $(findstring $(LOG_LEVEL),debug trace), \

    $(info $0 $(strip $1) $(foreach i,$(PARAM_SEQUENCE), \

      $(if $(strip $($i)),$(NEWLINE) $(strip [$i] $(if $(filter $(LOG_LEVEL), trace), \

        $($i), $(wordlist 1, 20, $($(i))) $(if $(word 21, $($(i))), ...)))))))

  $(if $(DEBUG_$(strip $1)),

    $(info -------- <<< Begin expansion of $(strip $1)) \

    $(info $(call $(0)Body,$(strip $1))) \

    $(info -------- >>> End expansion of $(strip $1)) \

  )

  $(call $(0)Body,$(strip $1))

endef

################################################################################

# Make directory without forking mkdir if not needed

# 1: List of directories to create

MakeDir = \

    $(strip \

        $(eval MakeDir_dirs_to_make := $(strip $(foreach d, $1, $(if $(wildcard $d), , $d)))) \

        $(if $(MakeDir_dirs_to_make), $(shell $(MKDIR) -p $(MakeDir_dirs_to_make))) \

    )

################################################################################

# Assign a variable only if it is empty

# Param 1 - Variable to assign

# Param 2 - Value to assign

SetIfEmpty = \

    $(if $($(strip $1)),,$(eval $(strip $1) := $2))