# rules.autoconf - build system

#
# Copyright (c) 2013-2014 Wind River Systems, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1) Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2) Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3) Neither the name of Wind River Systems nor the names of its contributors
# may be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

iTOP_KCONF = ${iKCONF_PRJ_DIR}/bsp-${vKTYPE}${vBSP_VARIANT}.kconf

.PHONY: config

define generate_autoconf_h
	-@$(HOS_Echo) '[vxmicro] Generating [autoconf]'
	$(call HOS_Wrsconfig,${iTOP_KCONF},$(1))

endef

iBSP_KCONF_VARIANT_HYPHEN_  = -
iBSP_KCONF_VARIANT_HYPHEN_n =
iBSP_KCONF_VARIANT_NO_ = n

iBSP_KCONF_VARIANT_HYPHEN = ${iBSP_KCONF_VARIANT_HYPHEN_${iBSP_KCONF_VARIANT_NO_${vBSP_VARIANT}}}
iBSP_KCONF_VARIANT = ${iBSP_KCONF_VARIANT_HYPHEN}${vBSP_VARIANT}

iBSP_KCONF = ${iKCONF_PRJ_DIR}/bsp.kconf
${iBSP_KCONF}: ${vCONFIG_BASE_DIR}/${vBSP}/bsp${iBSP_KCONF_VARIANT}.kconf | ${iKCONF_PRJ_DIR}/.dir
	$q${HOS_CopyFile} $< $@ > ${HOS_DEVNULL_W}

${iKCONF_TS}: ${iKCONF_FILES} | ${iKCONF_PRJ_DIR}/.dir
	$q$(foreach file, $?, ${HOS_CopyFile} ${file} $(dir $@) > ${HOS_DEVNULL_W} ${HOS_MultiCmd})
	@${HOS_Touch} $@

config: $(if ${iPRJ_CONF},${vDOT_AUTOCONF},) ${iBSP_KCONF} ${iKCONF_TS} | ${vOUT_DIR}/.dir ${vAUTOCONF_DIR}/.dir
	$(call generate_autoconf_h,)

${vAUTOCONF_H}: ${vAUTOCONF_MK}
	@$(HOS_true)

#####
# If the project does not provide a prj.conf file, autoconf.mk cannot be
# created automatically: the user MUST invoke 'make config'.
#
# If it does exist, if it updated by the user AFTER the autoconf files are
# created (autoconf.mk/autoconf.h/.autoconf), .autoconf must be updated by
# copying prj.conf over .autoconf, or else the changes to prj.conf would not
# be picked up, since .autoconf exists, and is the input file for custom
# defaults.

ifeq (${iPRJ_CONF},)
${vAUTOCONF_MK}:
	@${HOS_Echo} "No prj.conf: you must run 'make config' first."
	@${HOS_false}
else
${vDOT_AUTOCONF}: ${iPRJ_CONF} | $$(dir $$@).dir
	@$(HOS_CopyFile) $< $@ > ${HOS_DEVNULL_W}

${vAUTOCONF_MK}: ${iBSP_KCONF} ${iKCONF_TS} ${vDOT_AUTOCONF} | ${vAUTOCONF_DIR}/.dir
	$(call generate_autoconf_h,-S)
endif

#####