# defs.options - build option framework
#
# Copyright (c) 2007 Wind River Systems, Inc.
#
# The right to copy, distribute, modify or otherwise make use
# of this software may be licensed only pursuant to the terms
# of an applicable Wind River license agreement.
#
#
# modification history
# --------------------
# 01g,13may09,mze  change reference to TGT_DIR to be WIND_BASE/target
# 01f,08oct08,pee  WIND00137789
# 01e,04sep08,pee  adding variable to allow protection from multiple
#                  inclusion.
# 01d,04feb08,pee  adding make variables to define selected options.
# 01c,18sep07,pee  separating SMP & AMP definitions in a separate optional file.
# 01b,13jul07,ebh  Added AMP flag support
# 01a,08mar07,pee  created

# DESCRIPTION
# This file implements a build oprtion framework for vxWorks kernel
# libraries and applications.
#
# This framework accepts build options and expands associated make
# variables to be used in building and using vxWorks kernel libraries.
# 
# This file contains the make code to perform the variable expansion,
# as well as alll the architecture independent definitions. 

# use this variable to find if this file was already included
__DEFS_OPTIONS_INCLUDED = TRUE

# this variable defines the name of the variable to use to pass options
# to make

_OPTION_COMMAND = VXBUILD

# define the classes of options
_OPTION_CLASSES = MAJOR ARCH CPU MINOR

# define option variables
_OPTION_VARS = CFLAGS CFLAGS_AS C++FLAGS AS_FLAGS CFLAGS_PIC

# major options.
# may define default lib directory

# this is the list of accepted options
_OPTIONS_MAJOR =  
_OPTIONS_ARCH =
_OPTIONS_CPU =
_OPTIONS_MINOR =

###################################################################
#
# beginning of option specific definition section
#
# in this section, you may define, for a given option,
#	- any of the variable defined in _OPTION_VARS
#		<var>_OPTION_<option> = <value>
#	- a specific subroutine to be evaluated for the option
#		define _option_sub_<option>
#		<>
#		endef
#	- a class suffix for the option
#		_SUFFIX_OPTION_<option> = <value>
#	  suffix should normally include a leading underscore
#
###################################################################


# load optional feature installation files

__OPTION_INSTALL_FILES__ =  $(wildcard $(WIND_BASE)/target/h/make/defs.install.*.mk)
ifneq ($(__OPTION_INSTALL_FILES__),)
include $(__OPTION_INSTALL_FILES__)
endif

############################################
#
# end of option specific definition section
#
############################################
#
# variable expansion section
#
############################################

_ALL_OPTIONS = $(foreach class,$(_OPTION_CLASSES),$(_OPTIONS_$(class)))

# processing user selected options

$(foreach class,$(_OPTION_CLASSES),\
	$(eval _USER_$(class)_OPTIONS =\
		 $(filter $(_OPTIONS_$(class)),$($(_OPTION_COMMAND)))))

# verify that all options used are defined
_USER_INVALID_OPTIONS = $(filter-out $(_ALL_OPTIONS),$($(_OPTION_COMMAND)))
ifneq ($(strip $(_USER_INVALID_OPTIONS)),)
$(error *** invalid options $(_USER_INVALID_OPTIONS) selected)
endif

# list concatenation function
_concat = $(if $(word 2,$(1)),$(firstword $1)$(call _concat,$(wordlist 2,$(words $1),$1)),$1)

###############################################
# generate the option variables
# <var>_OPTIONS_ALL
###############################################

$(foreach class,$(_OPTION_CLASSES),\
    $(foreach var,$(_OPTION_VARS),\
	$(eval $(var)_$(class)_OPTIONS =\
	    $(foreach option,$(_USER_$(class)_OPTIONS),$($(var)_OPTION_$(option))))))

$(foreach var,$(_OPTION_VARS),\
    $(eval $(var)_OPTIONS_ALL =\
	 $(foreach class,$(_OPTION_CLASSES),$($(var)_$(class)_OPTIONS))))

###############################################
# generate the class suffixes
# <class>_OPTION_SUFFIX
###############################################

# specify suffixes defiend from command line
$(foreach class,$(_OPTION_CLASSES),\
    $(eval $(class)_CLI_OPTION_SUFFIX = \
	$(call _concat,$(sort \
	    $(foreach option,$(_USER_$(class)_OPTIONS), $(_SUFFIX_OPTION_$(option)))))))

# main suffixes defined from VSB configuration
$(foreach class,$(_OPTION_CLASSES),\
    $(eval $(class)_OPTION_SUFFIX =\
        $$(call _concat,$$(sort \
            $$(foreach option,$(_OPTIONS_$(class)),$$(if $$(_WRS_CONFIG_$$(option)),$$(_SUFFIX_OPTION_$$(option)))))))\
)

###############################################
# call option specific subroutines
###############################################
$(foreach option,$($(_OPTION_COMMAND)),$(eval $(call _option_sub_$(option))))