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#
# set -o noglob is assumed.
#

BUILD_ARGS_SPEC="
	ARCH:arg:-a:
	ARG_AS_NEEDED:--as-needed:
	ARG_CLEAN_BUILDS:arg:-C:
	ARG_DEBUG_MINIPIX:--debug-minipix:
	ARG_DIST:arg:-D:
	ARG_FETCH_FORCE:-F:
	ARG_PARALLEL:optarg:-P:auto
	ARG_RELAXED:-R:
	ARG_RESTART:arg:-r:
	ARG_VERBOSE:selfarg:-v:
	ARG_VERBOSE:selfarg:-vv:
	ARG_VERBOSE:selfarg:-vvv:
	ARG_XTRACE:-x:
	BUILD:arg:-b:";

build_args() {
	local _spec="${BUILD_ARGS_SPEC}" _spec_arg="" _found="";
	while [ ${#} -gt 0 ]; do
		if [ "${1#-}" = "${1}" ]; then
			break;
		fi;
		for _spec_arg in ${_spec}; do
			case "${_spec_arg}" in
			*:${1}:*)
				case "${_spec_arg#*:}" in
				arg:*)
					ex_rtl_set_var_unsafe "${_spec_arg%%:*}" "${2}"; shift; ;;
				optarg:*)
					if [ -n "${2}" ]\
					&& [ "x${2#-}" = "x${2}" ]; then
						ex_rtl_set_var_unsafe "${_spec_arg%%:*}" "${2}";
						shift;
					else
						ex_rtl_set_var_unsafe "${_spec_arg%%:*}"	\
							"${_spec_arg##*:}";
					fi; ;;
				selfarg:*)
					ex_rtl_set_var_unsafe "${_spec_arg%%:*}" "${1}"; ;;
				*)
					ex_rtl_set_var_unsafe "${_spec_arg%%:*}" 1; ;;
				esac; _found=1; break; ;;
			*)	_found=0; ;;
			esac;
		done;
		if [ "${_found:-0}" -eq 0 ]; then
			exec cat etc/build.usage;
		else
			shift;
		fi;
	done;
	if ex_rtl_lmatch "${ARG_DIST}" , tbz2	\
	|| ex_rtl_lmatch "${ARG_DIST}" , tgz	\
	|| ex_rtl_lmatch "${ARG_DIST}" , txz	\
	|| ex_rtl_lmatch "${ARG_DIST}" , zipdist; then
		if ! ex_rtl_lmatch "${ARG_DIST}" , minipix; then
			ARG_DIST="${ARG_DIST:+${ARG_DIST},}minipix";
		fi;
	fi;
	if [ -n "${ARG_RESTART}" ]; then
		if [ "${ARG_RESTART%:*}" != "${ARG_RESTART}" ]; then
			ARG_RESTART_AT="${ARG_RESTART#*:}"; ARG_RESTART="${ARG_RESTART%:*}";
		else
			ARG_RESTART_AT=ALL;
		fi;
		ARG_RESTART="$(echo "${ARG_RESTART}" | sed "s/,/ /g")";
	fi;
	if [ "${ARG_XTRACE:-0}" -eq 1 ]; then
		ARG_VERBOSE=2;
	else
		case "${ARG_VERBOSE}" in
		-v)	ARG_VERBOSE=1; ;;
		-vv)	ARG_VERBOSE=2; ;;
		-vvv)	ARG_VERBOSE=3; ;;
		esac;
	fi;
	while [ ${#} -gt 0 ]; do
	case "${1}" in
	*=*)	ex_rtl_set_var_unsafe "${1%%=*}" "${1#*=}"; ;;
	*)	BUILD_TARGETS="${BUILD_TARGETS:+${BUILD_TARGETS} }${1}"; ;;
	esac; shift; done;
};

# vim:filetype=sh