buildp_ast() {

	local _param="${1}" _pids_killed="";

	rm -f "${DEFAULT_BUILD_STATUS_IN_PROGRESS_FNAME}";

	case "${_param}" in

	abort) ex_rtl_log_msg failexit "Build aborted."; ;;

	esac;

	ex_rtl_kill_tree "${$}";

	if [ -n "${_pids_killed}" ]; then

		ex_rtl_log_msg vnfo "Killed PIDs ${_pids_killed}";

	fi;

};

buildp_init_args() {

	local _last_pkg=""; _status="";

	if [ "${ARG_AS_NEEDED:-0}" -eq 1 ]\

	&& [ -e "${PREFIX}/build.gitref" ]\

	&& [ "$(git rev-parse HEAD)" = "$(cat "${PREFIX}/build.gitref")" ]; then

		_status="Git repository has not changed since last build and --as-needed was specified.";

	fi;

	if [ -n "${ARG_RESTART}" ]; then

		if [ "${ARG_RESTART#\*\*}" != "${ARG_RESTART}" ]; then

			ARG_RESTART="${ARG_RESTART#\*\*}"; ARG_RESTART_RECURSIVE=2;

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

			ARG_RESTART="${ARG_RESTART#\*}"; ARG_RESTART_RECURSIVE=1;

		fi;

	fi;

	case "${ARG_RESTART}" in

	ALL)	ARG_RESTART_AT=ALL; ;;

	LAST)	ARG_RESTART_AT=""; ;;

	"")	;;

	*:*)	ARG_RESTART_AT="${ARG_RESTART#*:}"; ARG_RESTART="${ARG_RESTART%:*}"; ;;

	*)	ARG_RESTART="$(echo "${ARG_RESTART}" | sed "s/,/ /g")"; ARG_RESTART_AT=ALL; ;;

	esac;

	if [ "${ARG_RESTART}" = "LAST" ]; then

		if [ -n "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}" ]\

		&& [ -e "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}" ]; then

			_last_pkg="$(cat "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}")";

			ex_rtl_fileop rm "${DEFAULT_BUILD_LAST_FAILED_PKG_FNAME}";

			ex_rtl_state_clear "${BUILD_WORKDIR}" "${_last_pkg}";

		fi;

	fi;

	ex_rtl_log_set_vnfo_lvl "${ARG_VERBOSE:-0}";

	BUILD_IS_PARENT=1;

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

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

	BUILD_PKGS_FAILED="";

	BUILD_TIMES_SECS="$(ex_rtl_date %s)";

	if [ "${ARG_FETCH_FORCE}" = "ipv4" ]; then

		DEFAULT_GIT_ARGS="-4${DEFAULT_GIT_ARGS:+ ${DEFAULT_GIT_ARGS}}";

		DEFAULT_WGET_ARGS="-4${DEFAULT_WGET_ARGS:+ ${DEFAULT_WGET_ARGS}}";

	elif [ "${ARG_FETCH_FORCE}" = "ipv6" ]; then

		DEFAULT_GIT_ARGS="-6${DEFAULT_GIT_ARGS:+ ${DEFAULT_GIT_ARGS}}";

		DEFAULT_WGET_ARGS="-6${DEFAULT_WGET_ARGS:+ ${DEFAULT_WGET_ARGS}}";

	fi;

	return 0;

};

buildp_init_clean_prefix() {

	if ex_rtl_lmatch "${ARG_CLEAN_BUILDS}" "prefix" ","; then

		ex_rtl_log_msg info "-C prefix specified, cleaning prefix...";

		for _pname in ${DEFAULT_CLEAR_PREFIX_PATHS}; do

			ex_rtl_fileop rm "${PREFIX}/${_pname}";

		done;

	fi;

	return 0;

};

buildp_init_env() {

	local _rc=0 _vname="" _vname_val=""; _status="";

	case "${ARG_PARALLEL}" in

	auto)

		if [ "${DEFAULT_BUILD_CPUS}" -gt 1 ]; then

			ARG_PARALLEL=$((${DEFAULT_BUILD_CPUS}/2));

		else

			ARG_PARALLEL="${DEFAULT_BUILD_CPUS}";

		fi; ;;

	*[^0-9]*)

		_rc=10; _status="Error: invalid jobs count \`${ARG_PARALLEL}'."; ;;

	esac;

	if [ "${_rc}" -eq 0 ]; then

		ex_rtl_clean_env "${DEFAULT_CLEAR_ENV_VARS_EXCEPT}";

		if ex_rtl_check_path_vars "${DEFAULT_CHECK_PATH_VARS}"; then

			export PATH="${PREFIX}/bin${PATH:+:${PATH}}";

		else

			: $((_rc+=(11-1)));

		fi;

	fi;

	return "${_rc}";

};

buildp_init_exec() {

	_status=""

	trap "buildp_ast abort" HUP INT TERM USR1 USR2; trap "buildp_ast exit" EXIT; umask 022;

	return 0;

};

buildp_init_files() {

	local _log_last_fname="" _log_last_ts="" _rc=0; _status=""

	if ! ex_rtl_fileop mkdir "${BUILD_DLCACHEDIR}" "${BUILD_WORKDIR}"\

	|| ex_rtl_lmatch "${ARG_DIST}" "rpm" ","\

	&& ! ex_rtl_fileop mkdir "${PREFIX_RPM}"; then

		_rc=13; _status="Error: cannot create build directories.";

	elif [ -e "${DEFAULT_BUILD_STATUS_IN_PROGRESS_FNAME}" ]; then

		_rc=14; _status="Error: another build targeting this architecture and build type is currently in progress.";

	else

		touch "${DEFAULT_BUILD_STATUS_IN_PROGRESS_FNAME}";

		if [ -e "${DEFAULT_BUILD_LOG_FNAME}" ]; then

			_log_last_ts="$(stat -c %Y "${DEFAULT_BUILD_LOG_FNAME}")";

			_log_last_ts="$(awk 'BEGIN {printf(strftime("%Y-%m-%d-%H-%M-%S", '"${_log_last_ts}"'))}')";

			_log_last_fname="${DEFAULT_BUILD_LOG_FNAME}.${_log_last_ts}";

			ex_rtl_fileop mv "${DEFAULT_BUILD_LOG_FNAME}" "${_log_last_fname}";

			ex_rtl_fileop ln_symbolic "${_log_last_fname}" "${DEFAULT_BUILD_LOG_LAST_FNAME}";

		fi;

		ex_rtl_fileop touch "${DEFAULT_BUILD_LOG_FNAME}";

	fi;

	return "${_rc}";

};

buildp_init_getopts() {

	local _opt="" _shiftfl=0; _status="";

	while [ "${#}" -gt 0 ]; do

		case "${1}" in

		--as-needed)	ARG_AS_NEEDED=1; _shiftfl=1; ;;

		--debug-minipx)	ARG_DEBUG_MINIPIX=1; _shiftfl=1; ;;

		-v*)		_opt="${1#-}"; while [ -n "${_opt}" ]; do

					: $((ARG_VERBOSE+=1)); _opt="${_opt#?}";

				done; _shiftfl=1; ;;

		*)		_shiftfl=0; ;;

		esac;

		if [ "${_shiftfl}" -gt 0 ]; then

			shift "${_shiftfl}"; continue;

		elif getopts a:b:C:D:Fhp:Pr:R _opt; then

			case "${_opt}" in

			a)	ARCH="${OPTARG}"; ;;

			b)	BUILD="${OPTARG}"; ;;

			C)	ARG_CLEAN_BUILDS="${OPTARG}"; ;;

			D)	ARG_DIST="${OPTARG}"; ;;

			F)	ARG_FETCH_FORCE=1; ;;

			h)	cat etc/build.usage; exit 0; ;;

			p)	ARG_PARALLEL="${OPTARG}"; ;;

			P)	ARG_PARALLEL="auto"; ;;

			r)	ARG_RESTART="${OPTARG}"; ;;

			R)	ARG_RELAXED=1; ;;

			*)	cat etc/build.usage; exit 1; ;;

			esac; shift $((${OPTIND}-1)); OPTIND=1;

		else

			break;

		fi;

	done;

	if [ "${_rc}" -eq 0 ]; then

		while [ ${#} -gt 0 ]; do

		case "${1}" in

		*=*)		ex_rtl_set_var_unsafe "${1%%=*}" "${1#*=}"; ;;

		[^a-zA-Z]*)	_rc=2; _status="Error: build group names must start with [a-zA-Z]."; ;;

		*[^_a-zA-Z]*)	_rc=3; _status="Error: build group names must not contain [^_a-zA-Z]."; ;;

		*)		BUILD_GROUPS="${BUILD_GROUPS:+${BUILD_GROUPS} }${1}"; ;;

		esac; shift; done;

	fi;

	return "${_rc}";

};

buildp_init_prereqs() {

	local _cmd="" _cmds_missing="" _rc=0; _status="";

	for _cmd in	\

			awk bunzip2 cat chmod cmake cp date find flock g++	\

			gcc git grep gunzip gzip hostname install kill		\

			ln lzip make mkdir mkfifo mv paste patch perl		\

			pgrep pkill printf readlink rm sed seq sha256sum	\

			sort stat tail tar test touch tr wget xz zip; do

		if ! which "${_cmd}" >/dev/null 2>&1; then

			_cmds_missing="$(ex_rtl_lconcat "${_cmds_missing}" "${_cmd}")";

		fi;

	done;

	if [ -n "${_cmds_missing}" ]; then

		_rc=4; _status="Error: missing prerequisite package(s): ${_cmds_missing}";

	elif ! awk -V 2>/dev/null | grep -q "^GNU Awk "; then

		_rc=5; _status="Error: awk(1) in \$PATH must be GNU Awk.";

	elif ! sed --version 2>/dev/null | grep -q "^GNU sed "; then

		_rc=6; _status="Error: sed(1) in \$PATH must be GNU sed.";

	fi;

	return "${_rc}";

};

buildp_init_type() {

	local _rc=0; _status="";

	: ${ARCH:=nt64}; : ${BUILD:=debug};

	if [ "${ARCH}" = nt32 ]; then

		DEFAULT_TARGET="i686-nt32-midipix";

	elif [ "${ARCH}" = nt64 ]; then

		DEFAULT_TARGET="x86_64-nt64-midipix";

	else

		if [ "${BUILD}" != debug ]\

		&& [ "${BUILD}" != release ]; then

			_rc=7; _status="Error: unknown build type \`${BUILD}'.";

		fi;

		_rc=8; _status="Error: invalid architecture \`${ARCH}'.";

	fi;

	return "${_rc}";

};

buildp_init_vars() {

	local _fname="" _rc=0; _status="";

	if [ -z "${DEFAULT_BUILD_CPUS}" ]; then

		if [ -e /proc/cpuinfo ]; then

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

		else

			DEFAULT_BUILD_CPUS=1;

		fi;

	fi;

	for _fname in	\

			${HOME}/midipix_build.vars		\

			${HOME}/.midipix_build.vars		\

			../midipix_build.vars			\

			./vars/env.vars; do

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

	done;

	for _fname in $(find ./groups -name *.group | sort); do

		. "${_fname}"; _fname="${_fname##*/}"; _fname="${_fname%.group}";

		if [ "${_fname#[0-9][0-9][0-9].*}" != "${_fname}" ]\

		&& [ "${_fname#*[1-9].*}" = "${_fname}" ]\

		&& [ "${_fname}" != "999.invariants.group" ]; then

			GROUPS_DEFAULT="${GROUPS_DEFAULT:+${GROUPS_DEFAULT} }${_fname#*.}";

		fi;

	done;

	if [ -z "${PREFIX}" ]; then

		_rc=9; _status="Error: \${PREFIX} empty or unset.";

	fi;

	return "${_rc}";

};

build_fini() {

	: $((BUILD_TIMES_SECS=$(ex_rtl_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));

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

		ex_rtl_fileop rm ${DEFAULT_BUILD_STATUS_IN_PROGRESS_FNAME};

	fi;

};

build_init() {

	local _rc=0 _status="";

	if ! buildp_init_exec		\

	|| ! buildp_init_getopts "${@}"	\

	|| ! buildp_init_prereqs	\

	|| ! buildp_init_type		\

	|| ! buildp_init_vars		\

	|| ! buildp_init_env		\

	|| ! buildp_init_args		\

	|| ! buildp_init_files		\

	|| ! buildp_init_clean_prefix; then

		_rc="${?}"; ex_rtl_log_msg fail "${_status}"; exit "${_rc}";

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

		ex_rtl_log_msg info "${_status}"; exit 0;

	else

		return "${_rc}";

	fi;

};

# vim:filetype=sh