# Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies).
# All rights reserved.
# This component and the accompanying materials are made available
# under the terms of the License "Eclipse Public License v1.0"
# which accompanies this distribution, and is available
# at the URL "http://www.eclipse.org/legal/epl-v10.html".
#
# Initial Contributors:
# Nokia Corporation - initial contribution.
#
# Contributors:
#
# Description:
# Function Like Makefile (FLM) to create a resource header (.rsg)
# and resource files (.rsc, .r01, .r02 etc.)
#
#

## Parameters that are expected:
# TARGET
# TARGETPATH
# LANGUAGES
# HEADER
# HEADERONLY
# EPOCROOT
# MMPDEFS
# PRODUCT_INCLUDE
# SYSTEMINCLUDE
# USERINCLUDE
# GNUCPP
# GNUSED
# RCOMP
# OUTPUTPATH
# SOURCE
# BINCOPYDIRS


# The rss is pre-processed once for each language and results
# in a file with extension r$(LANGUAGE) where $(LANGUAGE) is
# either "sc" or a 2 (or more) digit number.
ifneq ($(TARGETPATH),)
RSCDIR:=$(subst //,/,$(EPOCROOT)/epoc32/data/z/$(TARGETPATH))
else
RSCDIR:=$(subst //,/,$(EPOCROOT)/epoc32/data)
endif

# Ensure that RELEASABLES and CLEANTARGETS cannot expand indefinitely in successive calls to this flm:
CLEANTARGETS:=
RELEASABLES:=
CREATABLEPATHS:=

# There is only one resource header (.rsg) file and we only
# make that if we are asked.
RSGDIR:=$(EPOCROOT)/epoc32/include
# If there are multiple LANGUAGES then it is the last one in the list
# which produces the header.
HEADLANG:=$(lastword $(LANGUAGES:SC=sc))
ifneq ($(or $(HEADER),$(HEADERONLY)),)
        RESOURCEHEADER:=$(RSGDIR)/$(HEADER)

else
        RESOURCEHEADER:=
endif

# we create intermediate .rpp and .d files
INTERBASE_TMP:=$(OUTPUTPATH)/$(TARGET_var)_$(notdir $(basename $(SOURCE)))

LANGUAGES:=$(LANGUAGES:SC=sc) # ensure that we don't ever have to worry about case consistency w.r.t languages or get confused into thinking that SC!=sc (which it is)
LANGUAGES:=$(call uniq,$(LANGUAGES)) # remove any duplicates from the list (usually the result of multiple LANG lists both in and out of START RESOURCE blocks)


# common pre-processor options

# We really should be using -iquote with a recent cpp.  This is a note for when we do update:
#CPPOPT:=-nostdinc -undef -Wno-trigraphs -D_UNICODE -include $(PRODUCT_INCLUDE)\
# -I$(dir $(SOURCE)) $(foreach I, $(USERINCLUDE),-iquote $(I) ) $(foreach J,$(SYSTEMINCLUDE),-I $(J) )

CPPOPT:=-nostdinc -undef -Wno-trigraphs -D_UNICODE -include $(PRODUCT_INCLUDE)\
 -I$(dir $(SOURCE)) $(foreach I, $(USERINCLUDE),-I$(I) ) -I- $(foreach J,$(SYSTEMINCLUDE),-I$(J) )

CREATABLEPATHS:=$(CREATABLEPATHS) $(RSCDIR) $(RSGDIR) $(OUTPUTPATH) 

# We intend to generate the resource in an intermediate location and copy to the targetpath to
# ensure that when the "same" resource is built into separare target paths, it doesn't have to be 
# completely recreated each time - just copied.
RSCCOPYDIRS:=$(RSCDIR)

# additional binary resource copies performed based on BINCOPYDIRS
ifneq ($(BINCOPYDIRS),)
        RSCCOPYDIRS:=$(RSCCOPYDIRS) $(subst //,/,$(patsubst %,%/$(if $(TARGETPATH),/z/$(TARGETPATH),),$(BINCOPYDIRS)))
endif
CREATABLEPATHS:=$(CREATABLEPATHS) $(RSCCOPYDIRS)

################################################################################
# Correct dependency information when a header file can't be found.
# If the c preprocessor can't find a dependency it appears as it did in the #include statement
# e.g. "filename.mbg" or "filename.rsg" in the dependency file.
ifneq ($(NO_DEPEND_GENERATE),)
  # This version minimises the size of dependency files, to contain only .mbg and .rsg deps.
  # It allows resources to be built in the right order but doesn't impose the weight of
  # of full dependency information which can overwhelm make in large builds.
  # The strategy is filter lines which don't have .rsg or .mbg dependencies in them and
  # to sift each line to leave out non-relevant things like other header files, .hrh 
  # files etc.  In the end don't print anything at all if we did not find the target.

  define  DEPENDENCY_CORRECTOR
  { $(DEPCRUNCH) --extensions rsg,mbg --assume '$(EPOCROOT)/epoc32/include' ; } 
  endef
  
else
  # This can correct the dependencies by assuming that the file will be in epoc32\include as this is the default
  DEPENDENCY_CORRECTOR:=$(GNUSED)  -r 's% ([^ \/]+\.((rsg)|(mbg)))% $(EPOCROOT)\/epoc32\/include\/\1%ig' 
endif

###############################################################################
# Include all the macros - but not if it has been done already

ifeq ($(include_resource_mk),)
include_resource_mk:=1

include $(FLMHOME)/resource.mk

endif

###############################################################################
## Generate a string of resourcefiles optionally with a header OR
## just a header (HEADERONLY)


ifeq ($(HEADERONLY),)  # i.e IF NOT HEADERONLY

  # The resources that are not for the "HEADER language" will all depend on
  # that "headlang resource" - they will "sit in its dependency slipstream"
  # or in other words We only have to make one dependency file because
  # all of the other languages will benefit from it indirectly through their
  # dependency on the header language.

  # The guard is based on the languages we're building so that 2 resource blocks can 
  # create different languages if so needed (no known reason for this but someone
  # could do it and in the past it would have worked).
  GUARD:=TARGET_$(call sanitise,$(INTERBASE_TMP))
  $(if $(FLMDEBUG),$(info <debug>resource.flm: $(GUARD)=$($(GUARD)) LANGUAGES:=$(LANGUAGES)</debug>))

  # Don't generate new rules for languages we've already seen for this resource file
  # i.e. this allows one to define a single resource using two startresource blocks.
  #  each of which specifies one half of the languages.
  REMAINING_LANGUAGES:=$(filter-out $($(GUARD)),$(LANGUAGES))
  $(if $(FLMDEBUG),$(info <debug>resource.flm:  REMAINING_LANGUAGES=$(REMAINING_LANGUAGES)</debug>))

  ifneq ($(REMAINING_LANGUAGES),)
    $(GUARD):=$($(GUARD)) $(REMAINING_LANGUAGES)

    LANGUAGES:=$(REMAINING_LANGUAGES)

    # PRIMARYFILE is the resource that will have a dependency file and that all the other
    # resources will depend on. 
    PRIMARYFILE:=$(INTERBASE_TMP).r$(HEADLANG)
    DEPENDFILENAME:=$(INTERBASE_TMP).r$(HEADLANG).d
    $(if $(FLMDEBUG),$(info <debug>resource.flm:  in guard with primary file=$(PRIMARYFILE)</debug>))
  
    ifeq "$(MAKEFILE_GROUP)" "RESOURCE_DEPS"
      # Generate PRIMARYFILE's dependencies
      $(eval $(call resource.deps,$(INTERBASE_TMP).r$(HEADLANG),$(HEADLANG),$(DEPENDFILENAME)))
    else
        RESOURCE:: $(PRIMARYFILE)

        # invoke the macro that creates targets for building resources, once per language
        # For sc we generate $(INTERBASE_TMP).rsc and define LANGUAGE_SC and LANGUAGE_sc.
        $(foreach L,$(LANGUAGES),$(eval $(call resource.build,$(INTERBASE_TMP).r$(L),$(L),$(TARGET_var).r$(L))))


        DEPENDFILE:=$(wildcard $(DEPENDFILENAME))
        ifneq "$(DEPENDFILE)" ""
          ifeq "$(filter %CLEAN,$(call uppercase,$(MAKECMDGOALS)))" ""
             -include $(DEPENDFILE)
          endif
        endif

    endif
  endif
  ifneq "$(MAKEFILE_GROUP)" "RESOURCE_DEPS"
    # Whether or not we have generated this resource for some other start
    # resource block, check if there are any new copies to be made for
    # this variant. e.g. winscw requires that we make some extra copies.
    # We tried to copy after running rcomp itself but we still need these
    # targets for the sake of dependencies or, for example, if someone
    # merely adds a new copy when the resource is up-to-date
    $(foreach L,$(LANGUAGES),$(eval $(call resource.makecopies,$(INTERBASE_TMP).r$(L),$(TARGET_var).r$(L))))

  endif
else
  #
  # HEADERONLY was specified
  #
  GUARD:=TARGET_$(call sanitise,$(INTERBASE_TMP))_rsg
  $(if $(FLMDEBUG),$(info <debug>resource.flm: Headeronly $(INTERBASE_TMP) $(TARGET_var).rsg LANGUAGES:=$(LANGUAGES)</debug>))

  ifeq ($($(GUARD)),)
      $(GUARD):=1  
      $(eval $(call resource.headeronly,$(INTERBASE_TMP),$(HEADLANG)))
      # The headeronly macro manages dependency including on its own
  endif

endif

ifneq "$(MAKEFILE_GROUP)" "RESOURCE_DEPS"
# Add header to releasables anyway despite guard since sone things
# like the abldcache want to see the rsg for each platform even
# if we only declare one rule.
# If there's no header then it will be blank which is fine.
RELEASABLES:=$(RELEASABLES) $(RESOURCEHEADER)
endif



###############################################################################
## .rfi generation in support of the gccxml build
## Note that .rfi files are created from the dependency files generated from preprocessing resources to create .rpp files
ifneq ($(RFIFILE),)
  RESOURCE:: $(RFIFILE)
  RELEASABLES:=$(RELEASABLES) $(RFIFILE)
  CREATABLEPATHS:=$(CREATABLEPATHS) $(dir $(RFIFILE))/

  $(eval $(call generaterfifile,$(RFIFILE),$(PRIMARYFILE).d))
endif


## Clean up
$(call raptor_clean,$(CLEANTARGETS))
# make the output directories while reading makefile - some build engines prefer this
$(call makepath,$(CREATABLEPATHS))

# for the --what option and the log file
$(call raptor_release,$(RELEASABLES),RESOURCE)