#

# . ./build.vars and set -o errexit -o noglob are assumed.

# See warning at the top of build.vars.

#

check_cpuinfo() {

	if [ -z "${BUILD_CPUS}" ]	\

	&& [ -e /proc/cpuinfo ]; then

		BUILD_CPUS=$(awk '/^processor/{cpus++} END{print cpus}' /proc/cpuinfo);

	fi;

};

clear_env() {

	for __ in $(export | sed -e 's/^export //' -e 's/=.*$//'); do

		if ! match_list "${CLEAR_ENV_VARS_EXCEPT}" " " "${__}"; then

			unset "${__}";

		fi;

	done;

};

check_paths() {

	for __ in ${CHECK_PATH_VARS}; do

		if [ -z "${___:=$(get_var_unsafe "${__}")}" ]; then

			log_msg failexit "Error: variable \`${__}' is empty or unset.";

		elif [ "${___#* *}" != "${___}" ]; then

			log_msg failexit "Error: variable \`${__}' contains one or more whitespace characters.";

		fi;

	done;

	for __ in ${CHECK_PREREQ_CMDS} $(eval echo ${CHECK_PREREQ_FILES_DYNAMIC}) ${CHECK_PREREQ_FILES}; do

		if [ "${__#/}" != "${__}" ]; then

			if [ ! -e "${__}" ]; then

				log_msg fail "Error: missing prerequisite file \`${__}'.";

				__exit=1;

			fi;

		else

			if ! test_cmd "${__}"; then

				log_msg fail "Error: missing prerequisite command \`${__}'.";

				__exit=1;

			fi;

		fi;

	done;

	for __ in ${CHECK_PREREQ_PERL_MODULES}; do

		if ! perl -M"${__}" -e "" 2>/dev/null; then

			log_msg fail "Error: missing prerequisite Perl module \`${__}'.";

			__exit=1;

		fi;

	done;

	if [ ${__exit:-0} = 1 ]; then

		exit 1;

	elif [ -n "${__exit}" ]; then

		unset __exit;

	fi;

};

clean_prefix() {

	if [ ${ARG_CLEAN:-0} -eq 1 ]; then

		log_msg info "-c specified, cleaning prefix...";

		for __ in ${CLEAR_PREFIX_DIRS}; do

			if [ -e ${PREFIX}/${__} ]; then

				secure_rm ${PREFIX}/${__};

			fi;

		done;

	fi;

};

create_dirs() {

	insecure_mkdir ${PREFIX} ${PREFIX_NATIVE} ${PREFIX_CROSS} ${PREFIX_TARGET}/lib ${DLCACHEDIR} ${WORKDIR};

	for __ in ${PREFIX}/usr ${PREFIX_NATIVE}/usr; do

		if [ ! -L "${__}" ]; then

			secure_rm "${__}"; ln -sf -- . "${__}";

		fi;

	done;

	insecure_mkdir ${PREFIX_MINIPIX}/bin;

	for __ in lib libexec share; do

		if [ ! -e ${PREFIX_MINIPIX}/${__} ]; then

			ln -sf bin ${PREFIX_MINIPIX}/${__};

		fi;

	done;

};

fini_build_progress_file() {

	if [ -f "${BUILD_STATUS_IN_PROGRESS_FNAME}" ]; then

		secure_rm ${BUILD_STATUS_IN_PROGRESS_FNAME};

	fi;

};

fini_build_vars() {

	: $((BUILD_TIMES_SECS=$(command date +%s)-${BUILD_TIMES_SECS}));

	: $((BUILD_TIMES_HOURS=${BUILD_TIMES_SECS}/3600));

	: $((BUILD_TIMES_MINUTES=(${BUILD_TIMES_SECS}%3600)/60));

	: $((BUILD_TIMES_SECS=(${BUILD_TIMES_SECS}%3600)%60));

};

init_build_log() {

	if [ -e ${BUILD_LOG_FNAME} ]; then

		mv -- ${BUILD_LOG_FNAME} ${BUILD_LOG_LAST_FNAME};

	fi;

};

init_build_progress_file() {

	touch ${BUILD_STATUS_IN_PROGRESS_FNAME};

};

init_build_vars() {

	BUILD_DATE_START="$(date %Y-%m-%d-%H-%M-%S)";

	BUILD_NFINI=${BUILD_NSKIP:=${BUILD_NFAIL:=${BUILD_NBUILT:=0}}};

	BUILD_TIMES_SECS=$(command date +%s);

};

source_scripts() {

	set -- ${BUILD_PACKAGE_LC%.*} ${BUILD_PACKAGE_LC#*.};

	for SCRIPT_SOURCE in vars/${BUILD_PACKAGE_LC}.vars ${BUILD_SCRIPT_FNAME}; do

		if [ -f ${MIDIPIX_BUILD_PWD}/${SCRIPT_SOURCE} ]; then

			if [ ${ARG_DRYRUN:-0} -eq 1 ]; then

				echo . ${MIDIPIX_BUILD_PWD}/${SCRIPT_SOURCE};

			else

				. ${MIDIPIX_BUILD_PWD}/${SCRIPT_SOURCE};

			fi;

		fi;

	done;

};

source_vars() {

	for __ in ${HOME}/midipix_build.vars ../midipix_build.vars ./vars/build.vars; do

		[ -e ${__} ] && . ${__};

	done;

};

subst_tgts() {

	while [ ${#} -ge 1 ]; do

	case "${1}" in

	devroot)

		echo ${DEVROOT_PACKAGES}; ;;

	world)	echo ${WORLD_PACKAGES}; ;;

	*)	echo ${1}; ;;

	esac; shift;

	done;

};

# vim:filetype=sh