From ce047ee9f0c206ef68dca70ff156fbcd29ea2ba5 Mon Sep 17 00:00:00 2001
From: Lucio Andrés Illanes Albornoz (arab, vxp) <l.illanes@gmx.de>
Date: Feb 01 2017 02:20:19 +0000
Subject: subr/build.subr, build.sh: merged into build.sh.

subr/{pkg,rtl}.subr: merged into subr/rtl.subr.

---

diff --git a/build.sh b/build.sh
index e9b96b8..73ff2f8 100755
--- a/build.sh
+++ b/build.sh
@@ -2,6 +2,17 @@
 # Copyright (c) 2016 Lucio Andrés Illanes Albornoz <l.illanes@gmx.de>
 #
 
+bp_subst_tgts() {
+	while [ ${#} -ge 1 ]; do
+	case "${1}" in
+	devroot)
+		echo ${DEVROOT_PACKAGES}; ;;
+	world)	echo ${WORLD_PACKAGES}; ;;
+	*)	echo ${1}; ;;
+	esac; shift;
+	done;
+};
+
 #
 # Clear the environment.
 # Source subroutine scripts.
@@ -10,7 +21,10 @@
 for __ in subr/*.subr; do
 	. ./${__};
 done;
-check_cpuinfo;
+if [ -z "${BUILD_CPUS}" ]	\
+&& [ -e /proc/cpuinfo ]; then
+	BUILD_CPUS=$(awk '/^processor/{cpus++} END{print cpus}' /proc/cpuinfo);
+fi;
 while [ ${#} -gt 0 ]; do
 case ${1} in
 -c)	ARG_CLEAN=1; ;;
@@ -39,7 +53,20 @@ host_toolchain|native_toolchain|runtime|lib_packages|leaf_packages|devroot|world
 *)	exec cat etc/build.usage; ;;
 esac; shift;
 done;
-source_vars; clear_env;
+
+#
+# Source variables.
+# Clear environment.
+#
+for __ in ${HOME}/midipix_build.vars ../midipix_build.vars ./vars/build.vars; do
+	[ -e ${__} ] && . ${__};
+done;
+for __ in $(export | sed -e 's/^export //' -e 's/=.*$//'); do
+	if ! match_list "${CLEAR_ENV_VARS_EXCEPT}" " " "${__}"; then
+		unset "${__}";
+	fi;
+done;
+
 if [ -z "${BUILD_TARGETS_META}" ]; then
 	BUILD_TARGETS_META=world;
 fi;
@@ -52,16 +79,88 @@ BUILD_TARGETS_META="invariants ${BUILD_TARGETS_META}";
 # Check whether all prerequisite Perl modules exist.
 # Clean ${PREFIX} if requested.
 # Create directory hierarchy and usr -> . symlinks.
-check_paths; clean_prefix; create_dirs;
-init_build_log; init_build_progress_file;
-{(init_build_vars;
+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;
+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;
+insecure_mkdir ${PREFIX} ${PREFIX}/x86_64-w64-mingw32 ${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;
+if [ ! -L ${PREFIX}/x86_64-w64-mingw32/mingw ]; then
+	secure_rm ${PREFIX}/x86_64-w64-mingw32/mingw;
+	ln -sf . ${PREFIX}/x86_64-w64-mingw32/mingw;
+fi;
+if [ ! -d ${PREFIX}/x86_64-w64-mingw32/mingw/include ]; then
+	secure_rm ${PREFIX}/x86_64-w64-mingw32/mingw/include;
+	insecure_mkdir ${PREFIX}/x86_64-w64-mingw32/mingw/include;
+fi;
+if [ ! -L ${PREFIX}/man ]; then
+	secure_rm ${PREFIX}/man;
+	ln -sf share/man ${PREFIX}/man;
+fi;
+if [ ! -L ${PREFIX_NATIVE}/man ]; then
+	secure_rm ${PREFIX_NATIVE}/man;
+	ln -sf share/man ${PREFIX_NATIVE}/man;
+fi;
+insecure_mkdir ${PREFIX_MINIPIX}/bin;
+for __ in lib libexec share; do
+	if [ ! -e ${PREFIX_MINIPIX}/${__} ]; then
+		ln -sf bin ${PREFIX_MINIPIX}/${__};
+	fi;
+done;
+if [ -e ${BUILD_LOG_FNAME} ]; then
+	mv -- ${BUILD_LOG_FNAME} ${BUILD_LOG_LAST_FNAME};
+fi;
+touch ${BUILD_STATUS_IN_PROGRESS_FNAME};
+{(
+BUILD_DATE_START="$(date %Y-%m-%d-%H-%M-%S)";
+BUILD_NFINI=${BUILD_NSKIP:=${BUILD_NFAIL:=${BUILD_NBUILT:=0}}};
+BUILD_TIMES_SECS=$(command date +%s);
 if [ ${ARG_CHECK_UPDATES:-0} -eq 0 ]; then
 	log_msg info "Build started by ${BUILD_USER:=${USER}}@${BUILD_HNAME:=$(hostname)} at ${BUILD_DATE_START}.";
 	log_env_vars "build (global)" ${LOG_ENV_VARS};
 else
 	log_msg info "Version check run started by ${BUILD_USER:=${USER}}@${BUILD_HNAME:=$(hostname)} at ${BUILD_DATE_START}.";
 fi;
-for BUILD_TARGET_LC in $(subst_tgts ${BUILD_TARGETS_META}); do
+for BUILD_TARGET_LC in $(bp_subst_tgts ${BUILD_TARGETS_META}); do
 	BUILD_TARGET=$(echo ${BUILD_TARGET_LC} | tr a-z A-Z);
 	for BUILD_PACKAGE_LC in $(get_var_unsafe ${BUILD_TARGET}_PACKAGES); do
 		BUILD_PACKAGE=$(echo ${BUILD_PACKAGE_LC} | tr a-z A-Z);
@@ -150,10 +249,15 @@ done;
 for __ in copy_etc strip tarballs; do
 	post_${__};
 done;
-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));
 log_msg info "${BUILD_NFINI} finished, ${BUILD_NSKIP} skipped, and ${BUILD_NFAIL} failed builds in ${BUILD_NBUILT} build script(s).";
 log_msg info "Build time: ${BUILD_TIMES_HOURS} hour(s), ${BUILD_TIMES_MINUTES} minute(s), and ${BUILD_TIMES_SECS} second(s).";
-fini_build_progress_file;
+if [ -f "${BUILD_STATUS_IN_PROGRESS_FNAME}" ]; then
+	secure_rm ${BUILD_STATUS_IN_PROGRESS_FNAME};
+fi;
 exit ${BUILD_SCRIPT_RC})} 2>&1 | tee ${BUILD_LOG_FNAME} &
 TEE_PID=${!};
 trap "rm -f ${BUILD_STATUS_IN_PROGRESS_FNAME};	\
diff --git a/subr/build.subr b/subr/build.subr
deleted file mode 100644
index 41cb4d8..0000000
--- a/subr/build.subr
+++ /dev/null
@@ -1,143 +0,0 @@
-#
-# . ./build.vars and set -o errexit -o noglob are assumed.
-# See warning at the top of build.vars.
-#
-
-check_cpuinfo() {
-	if [ -z "${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}/x86_64-w64-mingw32 ${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;
-	if [ ! -L ${PREFIX}/x86_64-w64-mingw32/mingw ]; then
-		secure_rm ${PREFIX}/x86_64-w64-mingw32/mingw;
-		ln -sf . ${PREFIX}/x86_64-w64-mingw32/mingw;
-	fi;
-	if [ ! -d ${PREFIX}/x86_64-w64-mingw32/mingw/include ]; then
-		secure_rm ${PREFIX}/x86_64-w64-mingw32/mingw/include;
-		insecure_mkdir ${PREFIX}/x86_64-w64-mingw32/mingw/include;
-	fi;
-	if [ ! -L ${PREFIX}/man ]; then
-		secure_rm ${PREFIX}/man;
-		ln -sf share/man ${PREFIX}/man;
-	fi;
-	if [ ! -L ${PREFIX_NATIVE}/man ]; then
-		secure_rm ${PREFIX_NATIVE}/man;
-		ln -sf share/man ${PREFIX_NATIVE}/man;
-	fi;
-	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_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 ${1}; ;;
-	esac; shift;
-	done;
-};
-
-# vim:filetype=sh
diff --git a/subr/pkg.subr b/subr/pkg.subr
deleted file mode 100644
index 2130feb..0000000
--- a/subr/pkg.subr
+++ /dev/null
@@ -1,124 +0,0 @@
-#
-# . ./build.vars and set -o errexit -o noglob are assumed.
-# See warning at the top of build.vars.
-#
-
-is_build_script_done() {
-	if [ "${1}" = "clean" ]; then
-		if match_list "${ARG_RESTART}" , ${BUILD_PACKAGE_LC}	\
-		&& [ -n "${ARG_RESTART_AT}" ]				\
-		&& match_list "${ARG_RESTART_AT}" , "${1}"; then
-			return 1;		# Build
-		else
-			return 0;		# Skip
-		fi;
-	elif [ "${ARG_RESTART}" = "ALL" ]; then
-		return 1;			# Build
-	elif match_list "${ARG_RESTART}" , ${BUILD_PACKAGE_LC}; then
-		if [ -n "${ARG_RESTART_AT}" ]; then
-			if [ "${ARG_RESTART_AT}" = "ALL" ]; then
-				return 1;	# Build
-			elif match_list "${ARG_RESTART_AT}" , "${1}"; then
-				return 1;	# Build
-			else
-				return 0;	# Skip
-			fi;
-		else
-			return 1;		# Build
-		fi;
-	elif [ -f ${WORKDIR}/.${2:-${BUILD_PACKAGE_LC}}.${1} ]; then
-		return 0;		# Skip
-	else
-		return 1;		# Build
-	fi;
-};
-
-log_env_vars() {
-	log_msg info "Variables for this ${1:-build}:"; shift;
-	while [ ${_lev_nvar:=0} -lt ${#} ]; do
-		_lev_arg="$(eval echo \${${_lev_nvar}})";
-		_lev_arg="${_lev_arg%%=*}";
-		if [ ${#_lev_arg} -gt ${_lev_arg_len_max:=0} ]; then
-			_lev_arg_len_max=${#_lev_arg};
-		fi; : $((_lev_nvar+=1));
-	done; unset _lev_nvar _lev_arg;
-	while [ ${#} -gt 0 ]; do
-		log_msg info "$(printf					\
-			"%${_lev_arg_len_max}.${_lev_arg_len_max}s=%s"	\
-			"${1%%=*}" "$(get_var_unsafe ${1#*=})")";
-		shift;
-	done; unset _lev_arg_len_max;
-};
-
-parse_with_pkg_name() {
-	PKG_NAME=${1}; shift;
-	_pwpn_pkg_name_uc=$(echo ${PKG_NAME} | tr a-z A-Z);
-	if [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_URL)" ]\
-	&& [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_URLS_GIT)" ]\
-	&& [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_VERSION)" ]; then
-		unset _pwpn_pkg_name_uc;
-		log_msg failexit "Error: package \`${PKG_NAME}' missing in build.vars.";
-	else
-		for _pwpn_vname in ${PKG_BUILD_VARS}; do
-			if [ -n "$(get_var_unsafe DEFAULT_${_pwpn_vname})" ]; then
-				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe DEFAULT_${_pwpn_vname})";
-			fi;
-			if [ -n "$(get_var_unsafe ${BUILD_TARGET}_${_pwpn_vname})" ]; then
-				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe ${BUILD_TARGET}_${_pwpn_vname})";
-			fi;
-			if [ "${BUILD}" = "debug" ]	\
-			&& [ -n "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_DEBUG)" ]; then
-				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_DEBUG)";
-			elif [ "${BUILD}" = "release" ]	\
-			&& [ -n "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_RELEASE)" ]; then
-				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_RELEASE)";
-			elif [ -n "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname})" ]; then
-				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname})";
-			fi;
-		done; unset _pwpn_vname;
-	fi;
-	[ -z "${PKG_FNAME}" ] && PKG_FNAME=${PKG_URL##*/};
-	[ -z "${PKG_SUBDIR}" ] && PKG_SUBDIR=${PKG_FNAME%%.tar*};
-	[ -n "${PKG_ENV_VARS_EXTRA}" ] && set_env_vars_with_sep : "${PKG_ENV_VARS_EXTRA}";
-	for _pwpn_env_var in $(set); do
-		if [ "${_pwpn_env_var#PKG_${_pwpn_pkg_name_uc}}" != "${_pwpn_env_var}" ]; then
-			_pwpn_env_vars="${_pwpn_env_vars:+${_pwpn_env_vars} }${_pwpn_env_var%%=*}";
-		fi;
-	done;
-	if [ -n "${_pwpn_env_vars}" ]; then
-		log_env_vars "build" ${_pwpn_env_vars};
-	fi; unset _pwpn_pkg_name_uc _pwpn_env_var _pwpn_env_vars;
-};
-
-run_cmd_unsplit() {
-	_rcu_cmd=${1}; shift;
-	while [ ${#} -gt 0 ]; do
-		[ -n "${1}" ] &&\
-			_rcu_cmdline="${_rcu_cmdline:+${_rcu_cmdline}:}${1}";
-		shift;
-	done;
-	push_IFS :; ${_rcu_cmd} ${_rcu_cmdline}; _rcu_rc=$?; pop_IFS;
-	unset _rcu_cmd _rcu_cmdline; return ${_rcu_rc};
-};
-
-set_build_script_done() {
-	_sbsd_script_fname=${BUILD_PACKAGE_LC};
-	_sbsd_done_fname=${WORKDIR}/.${_sbsd_script_fname};
-	while [ $# -ge 1 ]; do
-		if [ "${1#-}" != "${1}" ]; then
-			secure_rm ${_sbsd_done_fname}.${1#-};
-		else
-			touch ${_sbsd_done_fname}.${1};
-			log_msg info "Finished build step ${1} of \`${_sbsd_script_fname}'.";
-		fi; shift;
-	done; unset _sbsd_script_fname _sbsd_done_fname;
-};
-
-set_env_vars_with_sep() {
-	_sevws_sep=${1}; shift; push_IFS ${_sevws_sep}; set -- ${1};
-	while [ ${#} -gt 0 ]; do
-		export "${1}"; shift;
-	done; unset _sevws_sep; pop_IFS;
-};
-
-# vim:filetype=sh
diff --git a/subr/rtl.subr b/subr/rtl.subr
index 6f15a43..70fcbe3 100644
--- a/subr/rtl.subr
+++ b/subr/rtl.subr
@@ -102,4 +102,123 @@ secure_rm() {
 	done;
 };
 
+
+is_build_script_done() {
+	if [ "${1}" = "clean" ]; then
+		if match_list "${ARG_RESTART}" , ${BUILD_PACKAGE_LC}	\
+		&& [ -n "${ARG_RESTART_AT}" ]				\
+		&& match_list "${ARG_RESTART_AT}" , "${1}"; then
+			return 1;		# Build
+		else
+			return 0;		# Skip
+		fi;
+	elif [ "${ARG_RESTART}" = "ALL" ]; then
+		return 1;			# Build
+	elif match_list "${ARG_RESTART}" , ${BUILD_PACKAGE_LC}; then
+		if [ -n "${ARG_RESTART_AT}" ]; then
+			if [ "${ARG_RESTART_AT}" = "ALL" ]; then
+				return 1;	# Build
+			elif match_list "${ARG_RESTART_AT}" , "${1}"; then
+				return 1;	# Build
+			else
+				return 0;	# Skip
+			fi;
+		else
+			return 1;		# Build
+		fi;
+	elif [ -f ${WORKDIR}/.${2:-${BUILD_PACKAGE_LC}}.${1} ]; then
+		return 0;		# Skip
+	else
+		return 1;		# Build
+	fi;
+};
+
+log_env_vars() {
+	log_msg info "Variables for this ${1:-build}:"; shift;
+	while [ ${_lev_nvar:=0} -lt ${#} ]; do
+		_lev_arg="$(eval echo \${${_lev_nvar}})";
+		_lev_arg="${_lev_arg%%=*}";
+		if [ ${#_lev_arg} -gt ${_lev_arg_len_max:=0} ]; then
+			_lev_arg_len_max=${#_lev_arg};
+		fi; : $((_lev_nvar+=1));
+	done; unset _lev_nvar _lev_arg;
+	while [ ${#} -gt 0 ]; do
+		log_msg info "$(printf					\
+			"%${_lev_arg_len_max}.${_lev_arg_len_max}s=%s"	\
+			"${1%%=*}" "$(get_var_unsafe ${1#*=})")";
+		shift;
+	done; unset _lev_arg_len_max;
+};
+
+parse_with_pkg_name() {
+	PKG_NAME=${1}; shift;
+	_pwpn_pkg_name_uc=$(echo ${PKG_NAME} | tr a-z A-Z);
+	if [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_URL)" ]\
+	&& [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_URLS_GIT)" ]\
+	&& [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_VERSION)" ]; then
+		unset _pwpn_pkg_name_uc;
+		log_msg failexit "Error: package \`${PKG_NAME}' missing in build.vars.";
+	else
+		for _pwpn_vname in ${PKG_BUILD_VARS}; do
+			if [ -n "$(get_var_unsafe DEFAULT_${_pwpn_vname})" ]; then
+				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe DEFAULT_${_pwpn_vname})";
+			fi;
+			if [ -n "$(get_var_unsafe ${BUILD_TARGET}_${_pwpn_vname})" ]; then
+				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe ${BUILD_TARGET}_${_pwpn_vname})";
+			fi;
+			if [ "${BUILD}" = "debug" ]	\
+			&& [ -n "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_DEBUG)" ]; then
+				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_DEBUG)";
+			elif [ "${BUILD}" = "release" ]	\
+			&& [ -n "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_RELEASE)" ]; then
+				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname}_RELEASE)";
+			elif [ -n "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname})" ]; then
+				set_var_unsafe PKG_${_pwpn_vname} "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_${_pwpn_vname})";
+			fi;
+		done; unset _pwpn_vname;
+	fi;
+	[ -z "${PKG_FNAME}" ] && PKG_FNAME=${PKG_URL##*/};
+	[ -z "${PKG_SUBDIR}" ] && PKG_SUBDIR=${PKG_FNAME%%.tar*};
+	[ -n "${PKG_ENV_VARS_EXTRA}" ] && set_env_vars_with_sep : "${PKG_ENV_VARS_EXTRA}";
+	for _pwpn_env_var in $(set); do
+		if [ "${_pwpn_env_var#PKG_${_pwpn_pkg_name_uc}}" != "${_pwpn_env_var}" ]; then
+			_pwpn_env_vars="${_pwpn_env_vars:+${_pwpn_env_vars} }${_pwpn_env_var%%=*}";
+		fi;
+	done;
+	if [ -n "${_pwpn_env_vars}" ]; then
+		log_env_vars "build" ${_pwpn_env_vars};
+	fi; unset _pwpn_pkg_name_uc _pwpn_env_var _pwpn_env_vars;
+};
+
+run_cmd_unsplit() {
+	_rcu_cmd=${1}; shift;
+	while [ ${#} -gt 0 ]; do
+		[ -n "${1}" ] &&\
+			_rcu_cmdline="${_rcu_cmdline:+${_rcu_cmdline}:}${1}";
+		shift;
+	done;
+	push_IFS :; ${_rcu_cmd} ${_rcu_cmdline}; _rcu_rc=$?; pop_IFS;
+	unset _rcu_cmd _rcu_cmdline; return ${_rcu_rc};
+};
+
+set_build_script_done() {
+	_sbsd_script_fname=${BUILD_PACKAGE_LC};
+	_sbsd_done_fname=${WORKDIR}/.${_sbsd_script_fname};
+	while [ $# -ge 1 ]; do
+		if [ "${1#-}" != "${1}" ]; then
+			secure_rm ${_sbsd_done_fname}.${1#-};
+		else
+			touch ${_sbsd_done_fname}.${1};
+			log_msg info "Finished build step ${1} of \`${_sbsd_script_fname}'.";
+		fi; shift;
+	done; unset _sbsd_script_fname _sbsd_done_fname;
+};
+
+set_env_vars_with_sep() {
+	_sevws_sep=${1}; shift; push_IFS ${_sevws_sep}; set -- ${1};
+	while [ ${#} -gt 0 ]; do
+		export "${1}"; shift;
+	done; unset _sevws_sep; pop_IFS;
+};
+
 # vim:filetype=sh