Make everything a bit faster.

0) Issues several prayers and sacrifices to Enki under threat of a terrible deluge sent down by Ellil
1) Convert fork-write/read exprs to be non-forking
2) Pass mostly everything by reference
3) Don't bother cleaning the variable namespace because Bourne shell is an abomination
4) Removes broken ./pkgtool.sh -s, --restart-at, --update-diff & ./build.sh --dump-{in,on-abort}
5) Cleanup

18 files changed, 1090 insertions, 0 deletions

diff --git a/subr.pkg/pkg_build.subr b/subr.pkg/pkg_build.subr
new file mode 100644
index 00000000..8ea97368
--- /dev/null
+++ b/subr.pkg/pkg_build.subr
@@ -0,0 +1,67 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_build() {
+	local	_pb_group_name="${1}" _pb_pkg_name="${2}" _pb_restart_at="${3}"	\
+		_pb_libtool="" _pb_makeflags_verbosity="" _pb_no_autoconf=""	\
+		_pb_rc=0 _pb_subdir="";
+	_pb_makeflags_verbosity="${PKG_MAKEFLAGS_VERBOSITY:-none}";
+	if [ "${_pb_makeflags_verbosity}" = "none" ]; then
+		_pb_makeflags_verbosity="";
+	fi;
+
+	case "${PKG_LIBTOOL:-}" in
+	"")	_pb_libtool=""; ;;
+	none)	_pb_libtool=""; ;;
+	*)	_pb_libtool="${PKG_LIBTOOL}"; ;;
+	esac;
+
+	if [ ! -x "${PKG_CONFIGURE:-}" ]; then
+		_pb_no_autoconf=1;
+	fi;
+
+	for _pb_subdir in ${PKG_MAKE_SUBDIRS:-:}; do
+		if [ "${_pb_subdir}" = ":" ]; then
+			_pb_subdir="";
+		fi;
+
+		if [ "${#_pb_libtool}" -gt 0 ]; then
+			export MAKE="make LIBTOOL=${_pb_libtool}";
+		fi;
+
+		# N.B.	We only specify CC= here if the current package does not use GNU
+		#	autoconf as it often abuses it by appending -std={gnu99,...} to it
+		#	instead of amending CFLAGS.
+		rtl_run_cmd_unsplit "${PKG_MAKE}"							\
+			${PKG_MAKEFLAGS_BUILD:-}							\
+			${PKG_MAKEFLAGS_BUILD_EXTRA:-}							\
+			"AR=${PKG_AR}" "${_pb_no_autoconf:+CC=${PKG_CC}}" "RANLIB=${PKG_RANLIB}"	\
+			"${PKG_CFLAGS_BUILD:+CFLAGS=${PKG_CFLAGS_BUILD}}"				\
+			"${PKG_CFLAGS_BUILD_EXTRA:+CFLAGS+=${PKG_CFLAGS_BUILD_EXTRA}}"			\
+			"${PKG_CPPFLAGS_BUILD:+CPPFLAGS=${PKG_CPPFLAGS_BUILD}}"				\
+			"${PKG_CPPFLAGS_BUILD_EXTRA:+CPPFLAGS+=${PKG_CPPFLAGS_BUILD_EXTRA}}"		\
+			"${PKG_CXXFLAGS_BUILD:+CXXFLAGS=${PKG_CXXFLAGS_BUILD}}"				\
+			"${PKG_CXXFLAGS_BUILD_EXTRA:+CXXFLAGS+=${PKG_CXXFLAGS_BUILD_EXTRA}}"		\
+			"${PKG_LDFLAGS_BUILD:+LDFLAGS=${PKG_LDFLAGS_BUILD}}"				\
+			"${PKG_LDFLAGS_BUILD_EXTRA:+LDFLAGS+=${PKG_LDFLAGS_BUILD_EXTRA}}"		\
+			"${PKG_PKG_CONFIG:+PKG_CONFIG=${PKG_PKG_CONFIG}}"				\
+			"${PKG_PKG_CONFIG_LIBDIR:+PKG_CONFIG_LIBDIR=${PKG_PKG_CONFIG_LIBDIR}}"		\
+			${_pb_libtool:+"LIBTOOL=${_pb_libtool}"}					\
+			${_pb_makeflags_verbosity}							\
+			${_pb_subdir:+-C "${_pb_subdir}"};
+		_pb_rc="${?}";
+
+		if [ "${#_pb_libtool}" -gt 0 ]; then
+			unset MAKE;
+		fi;
+
+		if [ "${_pb_rc}" -ne 0 ]; then
+			break;
+		fi;
+	done;
+
+	return "${_pb_rc}";
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_build_clean.subr b/subr.pkg/pkg_build_clean.subr
new file mode 100644
index 00000000..bf41456b
--- /dev/null
+++ b/subr.pkg/pkg_build_clean.subr
@@ -0,0 +1,37 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_build_clean() {
+	local	_pbc_group_name="${1}" _pbc_pkg_name="${2}" _pbc_restart_at="${3}"	\
+		_pbc_libtool="" _pbc_makeflags_verbosity="${PKG_MAKEFLAGS_VERBOSITY:-}"	\
+		_pbc_no_autoconf="" _pbc_rc=0 _pbc_subdir="";
+
+	if ex_pkg_state_test "${PKG_NAME}" "build" "${_pbc_restart_at}"; then
+		case "${PKG_LIBTOOL:-}" in
+		"")	_pbc_libtool=""; ;;
+		none)	_pbc_libtool=""; ;;
+		*)	_pbc_libtool="${PKG_LIBTOOL}"; ;;
+		esac;
+		[ ! -x "${PKG_CONFIGURE:-}" ] && _pbc_no_autoconf=1;
+
+		for _pbc_subdir in ${PKG_MAKE_SUBDIRS:-:}; do
+			[ "${_pbc_subdir}" = ":" ] && _pbc_subdir="";
+			[ "${#_pbc_libtool}" -gt 0 ] && export MAKE="make LIBTOOL=${_pbc_libtool}";
+
+			rtl_run_cmd_unsplit "${PKG_MAKE}"			\
+				${PKG_MAKEFLAGS_BUILD:-}			\
+				${PKG_MAKEFLAGS_BUILD_EXTRA:-}			\
+				${_pbc_libtool:+"LIBTOOL=${_pbc_libtool}"}	\
+				${_pbc_makeflags_verbosity}			\
+				${_pbc_subdir:+-C "${_pbc_subdir}"}		\
+				clean; _pbc_rc="${?}";
+
+			[ "${#_pbc_libtool}" -gt 0 ] && unset MAKE;
+			[ "${_pbc_rc}" -ne 0 ] && return 1;
+		done;
+	fi;
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_clean.subr b/subr.pkg/pkg_clean.subr
new file mode 100644
index 00000000..0b65ec8e
--- /dev/null
+++ b/subr.pkg/pkg_clean.subr
@@ -0,0 +1,32 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_clean() {
+	local _pc_group_name="${1}" _pc_pkg_name="${2}" _pc_restart_at="${3}";
+
+	if [ "${PKG_NO_CLEAN:-0}" -eq 0 ]; then
+		if rtl_lmatch \$ARG_CLEAN_BUILDS "build" ","\
+		&& [ "${PKG_NO_CLEAN_BUILD_DIR:-0}" -eq 0 ]; then
+			if ! rtl_fileop rm "${PKG_BUILD_DIR}"; then
+				return 1;
+			fi;
+		fi;
+		if rtl_lmatch \$ARG_CLEAN_BUILDS "dest" ","; then
+			if ! rtl_fileop rm "${PKG_DESTDIR}"; then
+				return 1;
+			elif [ -e "${PKG_DESTDIR_HOST}" ]\
+			&&   ! rtl_fileop rm "${PKG_DESTDIR_HOST}"; then
+				return 1;
+			fi;
+		fi;
+		if rtl_lmatch \$ARG_CLEAN_BUILDS "src" ","; then
+			if ! rtl_fileop rm "${PKG_BASE_DIR}/${PKG_SUBDIR}"; then
+				return 1;
+			fi;
+		fi;
+	fi;
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_configure.subr b/subr.pkg/pkg_configure.subr
new file mode 100644
index 00000000..818ede10
--- /dev/null
+++ b/subr.pkg/pkg_configure.subr
@@ -0,0 +1,194 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkgp_configure_autotools() {
+	local _ppca_libtool="" _ppca_rc=0;
+
+	if ! [ -x "${PKG_CONFIGURE:-}" ]; then
+		_ppca_rc=2;
+	elif [ -d "${PKG_BASE_DIR}/${PKG_SUBDIR}/sofort" ]\
+	||   [ "${PKG_CONFIGURE_TYPE:-}" = "sofort" ];
+	then
+		_ppca_rc=2;
+	else
+		case "${PKG_LIBTOOL:-}" in
+		"")	_ppca_libtool=""; ;;
+		none)	_ppca_libtool=""; ;;
+		*)	_ppca_libtool="${PKG_LIBTOOL}"; ;;
+		esac;
+
+		rtl_export_vars						\
+			PKG_CONFIG "${PKG_PKG_CONFIG:-}"		\
+			PKG_CONFIG_LIBDIR "${PKG_PKG_CONFIG_LIBDIR:-}"	\
+			PYTHON "${PKG_PYTHON:-}"			\
+			${_ppca_libtool:+MAKE} ${_ppca_libtool:+"make LIBTOOL=${_ppca_libtool}"};
+
+		AR="${PKG_AR}"												\
+		CC="${PKG_CC}"												\
+		RANLIB="${PKG_RANLIB}"											\
+		CFLAGS="${PKG_CFLAGS_CONFIGURE:-}${PKG_CFLAGS_CONFIGURE_EXTRA:+ ${PKG_CFLAGS_CONFIGURE_EXTRA}}"		\
+		CPPFLAGS="${PKG_CFLAGS_CONFIGURE:-}${PKG_CFLAGS_CONFIGURE_EXTRA:+ ${PKG_CFLAGS_CONFIGURE_EXTRA}}"	\
+		CXXFLAGS="${PKG_CXXFLAGS_CONFIGURE:-}${PKG_CXXFLAGS_CONFIGURE_EXTRA:+ ${PKG_CXXFLAGS_CONFIGURE_EXTRA}}"	\
+		LDFLAGS="${PKG_LDFLAGS_CONFIGURE:-}${PKG_LDFLAGS_CONFIGURE_EXTRA:+ ${PKG_LDFLAGS_CONFIGURE_EXTRA}}"	\
+		"${PKG_CONFIGURE}" ${PKG_CONFIGURE_ARGS:-} ${PKG_CONFIGURE_ARGS_EXTRA:-} ${PKG_CONFIGURE_ARGS_EXTRA_DEBUG:-};
+		_ppca_rc=$((${?} ? 1 : ${_ppca_rc}));
+
+		rtl_export_vars	-u					\
+			PKG_CONFIG "${PKG_PKG_CONFIG:-}"		\
+			PKG_CONFIG_LIBDIR "${PKG_PKG_CONFIG_LIBDIR:-}"	\
+			PYTHON "${PKG_PYTHON:-}"			\
+			${_ppca_libtool:+MAKE} ${_ppca_libtool:+"make LIBTOOL=${_ppca_libtool}"};
+	fi;
+
+	return "${_ppca_rc}";
+};
+
+pkgp_configure_cmake() {
+	local _ppcc_cmake_args_auto"" _ppcc_build_type="" _ppcc_IFS0="${IFS:- 	}" _ppcc_rc=0 IFS;
+
+	if [ "${PKG_CMAKE_LISTFILE:+1}" != 1 ]\
+	|| ! [ -e "${PKG_BASE_DIR}/${PKG_SUBDIR}/${PKG_CMAKE_LISTFILE}" ]; then
+		_ppcc_rc=2;
+	else
+		rtl_fileop rm config.cache || return 1;
+		rtl_export_vars							\
+			PKG_CONFIG		"${PKG_PKG_CONFIG:-}"		\
+			PKG_CONFIG_LIBDIR	"${PKG_PKG_CONFIG_LIBDIR:-}"	\
+			PYTHON			"${PKG_PYTHON:-}";
+
+		case "${BUILD_KIND}" in
+		debug)		_ppcc_build_type="debug"; ;;
+		release|*)	_ppcc_build_type="release"; ;;
+		esac;
+
+		_ppcc_cmake_args_auto="
+			-DCMAKE_AR=${PKG_AR}
+			-DCMAKE_BUILD_TYPE=${_ppcc_build_type}
+			-DCMAKE_C_COMPILER=${PKG_CC}
+			-DCMAKE_C_FLAGS=${PKG_CFLAGS_CONFIGURE:-}${PKG_CFLAGS_CONFIGURE_EXTRA:+ ${PKG_CFLAGS_CONFIGURE_EXTRA}}
+			-DCMAKE_CPP_FLAGS=${PKG_CPPFLAGS_CONFIGURE:-}${PKG_CPPFLAGS_CONFIGURE_EXTRA:+ ${PKG_CPPFLAGS_CONFIGURE_EXTRA}}
+			-DCMAKE_CXX_COMPILER=${PKG_CXX}
+			-DCMAKE_CXX_FLAGS=${PKG_CXXFLAGS_CONFIGURE:-}${PKG_CXXFLAGS_CONFIGURE_EXTRA:+ ${PKG_CXXFLAGS_CONFIGURE_EXTRA}}
+			-DCMAKE_EXE_LINKER_FLAGS=${PKG_LDFLAGS_CONFIGURE:-}${PKG_LDFLAGS_CONFIGURE_EXTRA:+ ${PKG_LDFLAGS_CONFIGURE_EXTRA}}
+			-DCMAKE_FIND_ROOT_PATH=${PKG_PREFIX}
+			-DCMAKE_INSTALL_PREFIX=
+			-DCMAKE_LINKER=$(which "ld")
+			-DCMAKE_MODULE_LINKER_FLAGS=${PKG_LDFLAGS_CONFIGURE:-}${PKG_LDFLAGS_CONFIGURE_EXTRA:+ ${PKG_LDFLAGS_CONFIGURE_EXTRA}}
+			-DCMAKE_RANLIB=${PKG_RANLIB}
+			-DCMAKE_SHARED_LINKER_FLAGS=${PKG_LDFLAGS_CONFIGURE:-}${PKG_LDFLAGS_CONFIGURE_EXTRA:+ ${PKG_LDFLAGS_CONFIGURE_EXTRA}}
+			-DPKG_CONFIG_EXECUTABLE=${PKG_PKG_CONFIG}" || return 1;
+
+		case "${PKG_BUILD_TYPE}" in
+		host|cross)
+			;;
+
+		native)
+			_ppcc_cmake_args_auto="${_ppcc_cmake_args_auto:+${_ppcc_cmake_args_auto}}
+				-DCMAKE_LINKER=$(which "${PKG_TARGET}-ld")
+				-DCMAKE_SYSROOT=${PKG_PREFIX}
+				-DCMAKE_SYSTEM_NAME=Midipix" || return 1;
+
+			case "${ARCH}" in
+			nt32)	_ppcc_cmake_args_auto="${_ppcc_cmake_args_auto:+${_ppcc_cmake_args_auto}}
+					-DCMAKE_SYSTEM_PROCESSOR=i686"; ;;
+			nt64)	_ppcc_cmake_args_auto="${_ppcc_cmake_args_auto:+${_ppcc_cmake_args_auto}}
+					-DCMAKE_SYSTEM_PROCESSOR=x86_64"; ;;
+			esac; ;;
+
+		esac;
+
+		IFS="
+	";	"${PKG_CMAKE}"				\
+			${_ppcc_cmake_args_auto}	\
+			${PKG_CMAKE_ARGS:-}		\
+			${PKG_CMAKE_ARGS_EXTRA:-}	\
+		       	"${PKG_BASE_DIR}/${PKG_SUBDIR}";
+		_ppcc_rc=$((${?} ? ${?} : ${_ppcc_rc})); IFS="${_ppcc_IFS0}";
+
+		rtl_export_vars	-u						\
+			PKG_CONFIG		"${PKG_PKG_CONFIG:-}"		\
+			PKG_CONFIG_LIBDIR	"${PKG_PKG_CONFIG_LIBDIR:-}"	\
+			PYTHON			"${PKG_PYTHON:-}";
+	fi;
+
+	return "${_ppcc_rc}";
+};
+
+pkgp_configure_sofort() {
+	local _ppcs_rc=0 _ppcs_vname="" _ppcs_vnames="" _ppcs_vval="";
+
+	if ! [ -x "${PKG_CONFIGURE:-}" ]; then
+		_ppcs_rc=2;
+	elif ! [ -d "${PKG_BASE_DIR}/${PKG_SUBDIR}/sofort" ]\
+	&&   ! [ "${PKG_CONFIGURE_TYPE:-}" = "sofort" ]; then
+		_ppcs_rc=2;
+	else
+		for _ppcs_vname in AR CC CXX LD RANLIB; do
+			if eval [ '"${PKG_'"${_ppcs_vname}"':+1}"' = 1 ]; then
+				_ppcs_vnames="${_ppcs_vnames:+${_ppcs_vnames} }${_ppcs_vname}";
+				eval ${_ppcs_vname}='${PKG_'"${_ppcs_vname}"'}'; export ${_ppcs_vname};
+			fi;
+
+			if eval [ '"${PKG_SOFORT_NATIVE_'"${_ppcs_vname}"':+1}"' = 1 ]; then
+				_ppcs_vnames="${_ppcs_vnames:+${_ppcs_vnames} }NATIVE_${_ppcs_vname}";
+				eval NATIVE_${_ppcs_vname}='${PKG_SOFORT_NATIVE_'"${_ppcs_vname}"'}'; export NATIVE_${_ppcs_vname};
+			fi;
+		done;
+
+		for _ppcs_vname in CFLAGS CPPFLAGS CXXFLAGS LDFLAGS; do
+			if eval [ '"${PKG_'"${_ppcs_vname}"'_CONFIGURE:+1}"' = 1 ]; then
+				eval _ppcs_vval='${PKG_'"${_ppcs_vname}"'_CONFIGURE}';
+				if eval [ '"${PKG_'"${_ppcs_vname}"'_CONFIGURE_EXTRA:+1}"' = 1 ]; then
+					eval _ppcs_vval='${_ppcs_vval:+${_ppcs_vval} }${PKG_'"${_ppcs_vname}"'_CONFIGURE_EXTRA}';
+				fi;
+				_ppcs_vnames="${_ppcs_vnames:+${_ppcs_vnames} }${_ppcs_vname} ${_ppcs_vname}_SHARED ${_ppcs_vname}_STATIC";
+				eval ${_ppcs_vname}='${_ppcs_vval}'\; ${_ppcs_vname}_SHARED='${_ppcs_vval}'\; ${_ppcs_vname}_STATIC='${_ppcs_vval}';
+				export ${_ppcs_vname} ${_ppcs_vname}_SHARED ${_ppcs_vname}_STATIC;
+			fi;
+
+			if eval [ '"${PKG_SOFORT_NATIVE_'"${_ppcs_vname}"':+1}"' = 1 ]; then
+				eval _ppcs_vval='${PKG_SOFORT_NATIVE_'"${_ppcs_vname}"'}';
+				if eval [ '"${PKG_SOFORT_NATIVE_'"${_ppcs_vname}"'_EXTRA:+1}"' = 1 ]; then
+					eval _ppcs_vval='${_ppcs_vval:+${_ppcs_vval} }${PKG_SOFORT_NATIVE_'"${_ppcs_vname}"'_EXTRA}';
+				fi;
+				_ppcs_vnames="${_ppcs_vnames:+${_ppcs_vnames} }NATIVE_${_ppcs_vname}";
+				eval NATIVE_${_ppcs_vname}='${_ppcs_vval}'; export NATIVE_${_ppcs_vname};
+			fi;
+		done;
+
+		RANLIB="${PKG_RANLIB}"				\
+			"${PKG_CONFIGURE}"			\
+				${PKG_CONFIGURE_ARGS:-}		\
+				${PKG_CONFIGURE_ARGS_EXTRA:-}	\
+				${PKG_CONFIGURE_ARGS_EXTRA_DEBUG:-};
+		_ppcs_rc=$((${?} ? 1 : ${_ppcs_rc}));
+
+		for _ppcs_vname in ${_ppcs_vnames}; do
+			unset "${_ppcs_vname}";
+		done;
+	fi;
+
+	return "${_ppcs_rc}";
+};
+
+pkg_configure() {
+	local	_pc_group_name="${1}" _pc_pkg_name="${2}" _pc_restart_at="${3}"	\
+		_pc_rc=0 _pc_type="";
+
+	for _pc_type in autotools sofort cmake; do
+		if [ "${PKG_CONFIGURE_TYPE:+1}" = 1 ]\
+		&& [ "${PKG_CONFIGURE_TYPE}" != "${_pc_type}" ]; then
+			continue;
+		else
+			pkgp_configure_${_pc_type} "${@}"; _pc_rc="${?}";
+			case "${_pc_rc}" in
+			0|1)	return "${_pc_rc}"; ;;
+			2)	_pc_rc=0; continue; ;;
+			esac;
+		fi;
+	done;
+	return "${_pc_rc}";
+};
+
+# vim:filetype=sh textwidth=0
diff --git a/subr.pkg/pkg_configure_autotools.subr b/subr.pkg/pkg_configure_autotools.subr
new file mode 100644
index 00000000..c5753dc5
--- /dev/null
+++ b/subr.pkg/pkg_configure_autotools.subr
@@ -0,0 +1,114 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_configure_autotools() {
+	local	_pca_group_name="${1}" _pca_pkg_name="${2}" _pca_restart_at="${3}"	\
+		_pca_config_cache="" _pca_config_guest_fname="" _pca_fname=""		\
+		_pca_subdir_tgt="";
+
+	if [ "${PKG_CONFIGURE_TYPE:+1}" = 1 ]\
+	&& [ "${PKG_CONFIGURE_TYPE}" != "autotools" ]; then
+		return 0;
+	fi;
+
+	if [ "${PKG_AUTOCONF_CONFIG_GUESS:-midipix}" = "midipix" ]; then
+		_pca_config_guest_fname="config.guess";
+	else
+		_pca_config_guest_fname="";
+	fi;
+
+	if rtl_exists_any "${PKG_BASE_DIR}/${PKG_SUBDIR}"				\
+			${_pca_config_guest_fname:+"${_pca_config_guest_fname}"}	\
+			"configure.ac" "configure.in" "configure";
+	then
+		rtl_export_vars PKG_CONFIG "${PKG_PKG_CONFIG:-}" PKG_CONFIG_LIBDIR "${PKG_PKG_CONFIG_LIBDIR:-}";
+
+		if [ "${PKG_FORCE_AUTORECONF:-0}" -eq 1 ]\
+		&& ! (cd "${PKG_BASE_DIR}/${PKG_SUBDIR}" && autoreconf -fiv); then
+			return 1;
+		fi;
+
+		if [ -e "${PKG_BASE_DIR}/${PKG_SUBDIR}/configure.ac" ]\
+		&& [ ! -e "${PKG_BASE_DIR}/${PKG_SUBDIR}/configure" ]; then
+			for _pca_fname in bootstrap bootstrap.sh autogen.sh; do
+				if [ -e "${PKG_BASE_DIR}/${PKG_SUBDIR}/${_pca_fname}" ]; then
+					for _pca_subdir_tgt in \
+							"${PKG_BASE_DIR}/${PKG_SUBDIR}/build-aux"		\
+							"${PKG_BASE_DIR}/${PKG_SUBDIR}";
+					do	if [ -e "${_pca_subdir_tgt}" ]; then
+							if ! rtl_fileop install -m 0700				\
+									"${MIDIPIX_BUILD_PWD}/etc/config.sub"	\
+									"${_pca_subdir_tgt}/config.sub"; then
+								return 1;
+							fi;
+
+							if [ "${PKG_AUTOCONF_CONFIG_GUESS:-midipix}" = "midipix" ]; then
+								if ! rtl_fileop install -m 0700			\
+										"${MIDIPIX_BUILD_PWD}/etc/config.guess"\
+										"${_pca_subdir_tgt}/config.guess"; then
+									return 1;
+								else
+									break;
+								fi;
+							fi;
+						fi;
+					done;
+
+					if ! (rtl_fileop cd "${PKG_BASE_DIR}/${PKG_SUBDIR}" &&			\
+							/bin/sh "${_pca_fname}"); then
+						return 1;
+					else
+						break;
+					fi;
+				fi;
+			done;
+
+			if ! (rtl_fileop cd "${PKG_BASE_DIR}/${PKG_SUBDIR}" && autoconf); then
+				return 1;
+			fi;
+		fi;
+
+		for _pca_fname in $(find "${PKG_BASE_DIR}/${PKG_SUBDIR}" -name config.sub); do
+			if ! rtl_fileop mv "${_pca_fname}" "${_pca_fname}.orig"\
+			|| ! rtl_fileop install -m 0700 "${MIDIPIX_BUILD_PWD}/etc/config.sub" "${_pca_fname}"; then
+				return 1;
+			fi;
+		done;
+
+		if [ "${PKG_AUTOCONF_CONFIG_GUESS:-midipix}" = "midipix" ]; then
+			for _pca_fname in $(find "${PKG_BASE_DIR}/${PKG_SUBDIR}" -name config.guess); do
+				if ! rtl_fileop mv "${_pca_fname}" "${_pca_fname}.orig"\
+				|| ! rtl_fileop install -m 0700 "${MIDIPIX_BUILD_PWD}/etc/config.guess" "${_pca_fname}"; then
+					return 1;
+				fi;
+			done;
+		fi;
+
+		if [ "${PKG_BUILD_TYPE}" != host ]; then
+			if ! rtl_fileop touch "${PKG_BUILD_DIR}/config.cache"; then
+				return 1;
+			else
+				for _pca_config_cache in \
+						"${PKG_CONFIG_CACHE:-}"						\
+						"${PKG_CONFIG_CACHE_LOCAL:-}"					\
+						"${PKG_CONFIG_CACHE_EXTRA:-}";
+				do	if [ "${_pca_config_cache:+1}" = 1 ]\
+					&& ! printf "%s\n" "${_pca_config_cache}"					|\
+							tr " " "\n" >> "${PKG_BUILD_DIR}/config.cache"; then
+						return 1;
+					fi;
+				done;
+
+				if ! sed -i"" "s,%PREFIX%,${PKG_PREFIX},g" "${PKG_BUILD_DIR}/config.cache"; then
+					return 1;
+				fi;
+			fi;
+		fi;
+		rtl_export_vars -u PKG_CONFIG "${PKG_PKG_CONFIG:-}" PKG_CONFIG_LIBDIR "${PKG_PKG_CONFIG_LIBDIR:-}";
+	fi;
+
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_configure_clean.subr b/subr.pkg/pkg_configure_clean.subr
new file mode 100644
index 00000000..dd24efd6
--- /dev/null
+++ b/subr.pkg/pkg_configure_clean.subr
@@ -0,0 +1,21 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_configure_clean() {
+	local _pcc_group_name="${1}" _pcc_pkg_name="${2}" _pcc_restart_at="${3}";
+
+	if ex_pkg_state_test									\
+			"${_pcc_pkg_name}"							\
+			"configure_patch_pre,configure_autotools,configure_patch,configure"	\
+			"${_pcc_restart_at}"\
+	&& [ "${PKG_BUILD_DIR:-}" != "${PKG_SUBDIR:-}" ];
+	then
+		rtl_fileop rm "${PKG_BUILD_DIR}" || return 1;
+		rtl_fileop mkdir "${PKG_BUILD_DIR}" || return 1;
+		rtl_fileop cd "${PKG_BUILD_DIR}" || return 1;
+	fi;
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_configure_patch.subr b/subr.pkg/pkg_configure_patch.subr
new file mode 100644
index 00000000..ba78d46e
--- /dev/null
+++ b/subr.pkg/pkg_configure_patch.subr
@@ -0,0 +1,44 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_configure_patch() {
+	local	_pcp_group_name="${1}" _pcp_pkg_name="${2}" _pcp_restart_at="${3}"	\
+		_pcp_patch_cwd="" _pcp_patch_dir="${MIDIPIX_BUILD_PWD}/patches"		\
+		_pcp_patch_fname="" _pcp_patches_done="" _pcp_pkg_name_full=""		\
+		_pcp_strip_count=0;
+	_pcp_pkg_name_full="${_pcp_pkg_name}${PKG_VERSION:+-${PKG_VERSION}}";
+
+	if [ "${PKG_FNAME:+1}" = 1 ]\
+	&& [ "${PKG_URLS_GIT:+1}" = 1 ];
+	then
+		_pcp_patch_cwd="${PKG_BASE_DIR}";
+		_pcp_strip_count=0;
+	else
+		_pcp_patch_cwd="${PKG_BASE_DIR}/${PKG_SUBDIR}";
+		_pcp_strip_count=1;
+	fi;
+
+	set +o noglob;
+	for _pcp_patch_fname in 								\
+			"${_pcp_patch_dir}/${PKG_NAME}/"*.patch					\
+			"${_pcp_patch_dir}/${_pcp_pkg_name_full}.local.patch"			\
+			"${_pcp_patch_dir}/${_pcp_pkg_name_full}.local@${BUILD_HNAME}.patch"	\
+			${PKG_PATCHES_EXTRA:-};
+	do
+		if [ -r "${_pcp_patch_fname}" ]\
+		&& ! rtl_lmatch \$_pcp_patches_done "${_pcp_patch_fname}";
+		then
+			if ! patch -b -d "${_pcp_patch_cwd}" "-p${_pcp_strip_count}" < "${_pcp_patch_fname}"; then
+				set -o noglob; return 1;
+			else
+				rtl_lconcat \$_pcp_patches_done "${_pcp_patch_fname}";
+			fi;
+		fi;
+	done;
+	set -o noglob;
+
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_configure_patch_pre.subr b/subr.pkg/pkg_configure_patch_pre.subr
new file mode 100644
index 00000000..54352328
--- /dev/null
+++ b/subr.pkg/pkg_configure_patch_pre.subr
@@ -0,0 +1,48 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkgp_configure_patch_pre() {
+	local _ppcpp_patch_path="";
+
+	for _ppcpp_patch_path in 											\
+			"${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}${PKG_VERSION:+-${PKG_VERSION}}_pre.local.patch"	\
+			"${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}${PKG_VERSION:+-${PKG_VERSION}}_pre.local@${BUILD_HNAME}.patch";
+	do
+		if [ -r "${_ppcpp_patch_path}" ]\
+		&& ! patch -b -d "${PKG_BASE_DIR}/${PKG_SUBDIR}" -p1 < "${_ppcpp_patch_path}";
+		then
+			return 1;
+		fi;
+	done;
+	return 0;
+};
+
+pkgp_configure_patch_pre_chainport() {
+	local _ppcppc_patch_dname="" _ppcppc_patch_fname="" _ppcppc_oldpwd="";
+	_ppcppc_patch_dname="${PKG_BASE_DIR}/${PKG_SUBDIR}/patches/${PKG_NAME%%_ppcppc_*}";
+
+	if [ "${PKG_VERSION:+1}" = 1 ]; then
+		_ppcppc_patch_fname="${BUILD_WORKDIR}/chainport/patches/${PKG_NAME%%_ppcppc_*}/${PKG_NAME%%_ppcppc_*}-${PKG_VERSION}.midipix.patch";
+	fi;
+	if [ -e "${_ppcppc_patch_fname}" ]; then
+		if ! rtl_fileop mkdir "${_ppcppc_patch_dname}"\
+		|| ! rtl_fileop cp "${_ppcppc_patch_fname}" "${_ppcppc_patch_dname}"; then
+			return 1;
+		fi;
+	fi;
+	return 0;
+};
+
+pkg_configure_patch_pre() {
+	local _pcpp_group_name="${1}" _pcpp_pkg_name="${2}" _pcpp_restart_at="${3}";
+
+	if ! pkgp_configure_patch_pre_chainport\
+	|| ! pkgp_configure_patch_pre;
+	then
+		return 1;
+	fi;
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_fetch_clean.subr b/subr.pkg/pkg_fetch_clean.subr
new file mode 100644
index 00000000..6202b18b
--- /dev/null
+++ b/subr.pkg/pkg_fetch_clean.subr
@@ -0,0 +1,25 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_fetch_clean() {
+	local	_pfc_group_name="${1}" _pfc_pkg_name="${2}" _pfc_restart_at="${3}"	\
+		_pfc_dname="";
+
+	if [ "${PKG_URLS_GIT:+1}" = 1 ]; then
+		if [ "${PKG_SUBDIR:+1}" = 1 ]\
+		&& [ "${PKG_SUBDIR}" != "${PKG_URLS_GIT%%=*}" ]; then
+			rtl_fileop rm "${PKG_SUBDIR}";
+		fi;
+
+		for _pfc_dname in ${PKG_URLS_GIT}; do
+			_pfc_dname="${_pfc_dname%%=*}"; rtl_fileop rm "${_pfc_dname}";
+		done;
+	elif [ "${PKG_SUBDIR:+1}" = 1 ]; then
+		rtl_fileop rm "${PKG_SUBDIR}";
+	fi;
+
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_fetch_download.subr b/subr.pkg/pkg_fetch_download.subr
new file mode 100644
index 00000000..fe7fff85
--- /dev/null
+++ b/subr.pkg/pkg_fetch_download.subr
@@ -0,0 +1,43 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_fetch_download() {
+	local _pfd_group_name="${1}" _pfd_pkg_name="${2}" _pfd_restart_at="${3}";
+
+	if [ "${ARG_FETCH_FORCE:-}" != "offline" ]; then
+		if [ "${PKG_URL:+1}" = 1 ]; then
+			if ! rtl_fetch_dlcache_subdir				\
+					"${BUILD_DLCACHEDIR}" "${PKG_NAME}"	\
+					"${PKG_INHERIT_FROM:-}";
+			then
+				return 1;
+			elif ! rtl_fetch_url_wget	\
+					"${PKG_URL}" "${PKG_SHA256SUM}" "${BUILD_DLCACHEDIR}/${PKG_NAME}"\
+					"${PKG_FNAME}" "${PKG_NAME}" "${PKG_MIRRORS:-}"; then
+				return 1;
+			fi;
+		fi;
+
+		if [ "${PKG_URLS_GIT:+1}" = 1 ]; then
+			if ! rtl_fetch_dlcache_subdir				\
+					"${BUILD_DLCACHEDIR}" "${PKG_NAME}"	\
+					"${PKG_INHERIT_FROM:-}";
+			then
+				return 1;
+			elif ! rtl_fetch_urls_git	\
+					"${BUILD_DLCACHEDIR}/${PKG_NAME}" "${DEFAULT_GIT_ARGS}" "${PKG_BASE_DIR}"\
+					"${PKG_NAME}" "${PKG_MIRRORS_GIT:-}" ${PKG_URLS_GIT}; then
+				return 1;
+			fi;
+		fi;
+
+		rtl_fetch_clean_dlcache				\
+			"${BUILD_DLCACHEDIR}" "${PKG_NAME}"	\
+			"${PKG_FNAME:-}" "${PKG_URLS_GIT:-}";
+	fi;
+
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_fetch_extract.subr b/subr.pkg/pkg_fetch_extract.subr
new file mode 100644
index 00000000..ed4bad78
--- /dev/null
+++ b/subr.pkg/pkg_fetch_extract.subr
@@ -0,0 +1,48 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkgp_fetch_extract_type() {
+	local _ppfet_fname="${1}" _ppfet_rtype="${2#\$}";
+
+	if [ "${1##*.tar.}" != "${1}" ]; then
+		eval ${_ppfet_rtype}='${1##*.tar.}';
+	elif [ "${1##*.t}" != "${1}" ]; then
+		eval ${_ppfet_rtype}='${1##*.t}';
+	fi;
+	return 0;
+};
+
+pkg_fetch_extract() {
+	local	_pfe_group_name="${1}" _pfe_pkg_name="${2}" _pfe_restart_at="${3}"	\
+		_pfe_type="";
+
+	if [ "${PKG_URL:+1}" = 1 ]; then
+		_pfe_oldpwd="${PWD}";
+
+		if ! rtl_fileop cd "${PKG_BASE_DIR}"\
+		|| ! rtl_fileop rm "${PKG_BASE_DIR}/${PKG_SUBDIR}"; then
+			rtl_fileop cd "${_pfe_oldpwd}"; return 1;
+		else
+			pkgp_fetch_extract_type "${PKG_NAME}" \$_pfe_type;
+
+			case "${_pfe_type}" in
+			bz2)	bunzip2 -d < "${BUILD_DLCACHEDIR}/${PKG_NAME}/${PKG_FNAME}" | tar -C "${PKG_BASE_DIR}" -xf -; ;;
+			gz)	gunzip -d < "${BUILD_DLCACHEDIR}/${PKG_NAME}/${PKG_FNAME}" | tar -C "${PKG_BASE_DIR}" -xf -; ;;
+			lz)	lzip -d < "${BUILD_DLCACHEDIR}/${PKG_NAME}/${PKG_FNAME}" | tar -C "${PKG_BASE_DIR}" -xf -; ;;
+			xz)	xz -d < "${BUILD_DLCACHEDIR}/${PKG_NAME}/${PKG_FNAME}" | tar -C "${PKG_BASE_DIR}" -xf -; ;;
+			*)	tar -C "${PKG_BASE_DIR}" -xf "${BUILD_DLCACHEDIR}/${PKG_NAME}/${PKG_FNAME}"; ;;
+			esac;
+
+			if [ "${?}" -ne 0 ]; then
+				rtl_fileop cd "${_pfe_oldpwd}"; return 1;
+			else
+				rtl_fileop cd "${_pfe_oldpwd}";
+			fi;
+		fi;
+	fi;
+
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_install.subr b/subr.pkg/pkg_install.subr
new file mode 100644
index 00000000..6fe420df
--- /dev/null
+++ b/subr.pkg/pkg_install.subr
@@ -0,0 +1,37 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_install() {
+	local	_group_name="${1}" _pkg_name="${2}" _restart_at="${3}"	\
+		_destdir="" _destdir_prefix="" _pkglist_name="";
+
+	if ! rtl_fileop mkdir "${PKG_PREFIX}"; then
+		return 1;
+	else	for _destdir in "${PKG_DESTDIR}:${PKG_PREFIX}" "${PKG_DESTDIR_HOST}:${PREFIX}"; do
+			rtl_lassign "_destdir _destdir_prefix" ":" "${_destdir}";
+			if [ -e "${_destdir}" ]; then
+				(set +o errexit -o noglob; rtl_flock_acquire 4 || exit "${?}";
+				trap "rm -f \"${BUILD_WORKDIR}/install.lock\"" EXIT;
+				if ! tar -C "${_destdir}" -cpf - . | tar -C "${_destdir_prefix}" --overwrite -xpf -; then
+					exit 1;
+				fi) 4<>"${BUILD_WORKDIR}/install.lock";
+			fi;
+		done;
+		if [ "${?}" -ne 0 ]; then
+			return 1;
+		elif [ "${PKG_PKGLIST_DISABLE:-0}" -eq 0 ]; then
+			if [ ! -e "${PREFIX}/pkglist.${PKG_BUILD_TYPE}" ]\
+			&& ! touch "${PREFIX}/pkglist.${PKG_BUILD_TYPE}"; then
+				return 1;
+			else
+				_pkglist_name="${PKG_BASE_DIR##*/}"; _pkglist_name="${_pkglist_name%%-*}";
+				if ! printf "%s\n" "${_pkglist_name}" >> "${PREFIX}/pkglist.${PKG_BUILD_TYPE}"; then
+					return 1;
+				fi;
+			fi;
+		fi;
+	fi;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_install_clean.subr b/subr.pkg/pkg_install_clean.subr
new file mode 100644
index 00000000..bb8df2c2
--- /dev/null
+++ b/subr.pkg/pkg_install_clean.subr
@@ -0,0 +1,15 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_install_clean() {
+	local _pic_group_name="${1}" _pic_pkg_name="${2}" _pic_restart_at="${3}";
+
+	if [ "${PKG_DESTDIR:+1}" = 1 ]; then
+		rtl_fileop rm "${PKG_DESTDIR}" || return 1;
+		rtl_fileop mkdir "${PKG_DESTDIR}" || return 1;
+	fi;
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_install_files.subr b/subr.pkg/pkg_install_files.subr
new file mode 100644
index 00000000..364bd363
--- /dev/null
+++ b/subr.pkg/pkg_install_files.subr
@@ -0,0 +1,133 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkgp_install_files() {
+	if [ "${PKG_INSTALL_FILES:+1}" = 1 ]; then
+		if ! rtl_install -v "${PKG_DESTDIR}" ${PKG_INSTALL_FILES}; then
+			return 1;
+		fi;
+	fi;
+	return 0;
+};
+
+pkgp_install_files_v2() {
+	local _ppifv2_status="" _ppifv2_vflag="";
+
+	if [ "${PKG_INSTALL_FILES_V2:+1}" = 1 ]; then
+		if rtl_lmatch \$ARG_VERBOSE_TAGS "install" ","; then
+			_ppifv2_vflag="-v";
+		fi;
+		if ! rtl_install_v2							\
+				\$_ppifv2_status					\
+				-p "_builddir=${PKG_BUILD_DIR}"				\
+				-p "_destdir=${PKG_BASE_DIR}/${PKG_DESTDIR}"		\
+				-p "_destdir_host=${PKG_BASE_DIR}/${PKG_DESTDIR_HOST}"	\
+				-p "_files=${MIDIPIX_BUILD_PWD}/files/${PKG_NAME}"	\
+				-p "_name=${PKG_NAME}"					\
+				-p "_prefix=${PKG_PREFIX}"				\
+				-p "_prefix_host=${PREFIX}"				\
+				-p "_prefix_native=${PREFIX_NATIVE}"			\
+				-p "_subdir=${PKG_BASE_DIR}/${PKG_SUBDIR}"		\
+				-p "_target=${PKG_TARGET}"				\
+				-p "_version=${PKG_VERSION:-}"				\
+				-p "_workdir=${BUILD_WORKDIR}"				\
+				${_ppifv2_vflag} -- "${PKG_DESTDIR}"			\
+				"${PKG_INSTALL_FILES_V2}";
+		then
+			return 1;
+		fi;
+	fi;
+};
+
+pkgp_install_files_perms() {
+	local _ppifp_destdir="" _ppifp_fname="" IFS;
+
+	for _ppifp_destdir in "${PKG_DESTDIR}" "${PKG_DESTDIR_HOST}"; do
+		if [ -e "${_ppifp_destdir}" ]; then
+			rtl_set_IFS_nl;
+
+			for _ppifp_fname in $(find "${_ppifp_destdir}" -type d); do
+				if ! rtl_fileop chmod 0755 "${_ppifp_fname}"; then
+					return 1;
+				fi;
+			done;
+
+			for _ppifp_fname in $(find "${_ppifp_destdir}" \( -not -perm /0111 \) -type f); do
+				if ! rtl_fileop chmod 0644 "${_ppifp_fname}"; then
+					return 1;
+				fi;
+			done;
+
+			for _ppifp_fname in $(find "${_ppifp_destdir}" -perm /0111 -type f); do
+				if ! rtl_fileop chmod 0755 "${_ppifp_fname}"; then
+					return 1;
+				fi;
+			done;
+		fi;
+	done;
+	return 0;
+};
+
+pkgp_install_files_pkgconfig() {
+	local _ppifp2_pc_path="";
+
+	for _ppifp2_pc_path in $(find "${PKG_DESTDIR}" -name \*.pc); do
+		if [ -n "$(sed -ne '/^libdir=[^$]*$/p' "${_ppifp2_pc_path}")" ]			\
+		&& ! sed -i""	-e '/^libdir=[^$]*$/s/^libdir=\(.*\)$/libdir=${exec_prefix}\1/'	\
+				-e '/^exec_prefix=$/s/^.*$/exec_prefix=${prefix}/'		\
+				"${_ppifp2_pc_path}"; then
+			return 1;
+		fi;
+
+		if [ -n "$(sed -ne '/^includedir=[^$]*$/p' "${_ppifp2_pc_path}")" ]			\
+		&& ! sed -i""	-e '/^includedir=[^$]*$/s/^includedir=\(.*\)$/includedir=${prefix}\1/'	\
+				"${_ppifp2_pc_path}"; then
+			return 1;
+		fi;
+	done;
+};
+
+pkgp_install_files_strip() {
+	local _ppifs_bin_path="" _ppifs_stripfl=0 _ppifs_tree_root="${PKG_DESTDIR}";
+
+	if [ -e "${_ppifs_tree_root}" ]; then
+		if rtl_match "${PKG_NAME}" "*_ppifs_minipix"; then
+			: $((_ppifs_stripfl=(${ARG_DEBUG_MINIPIX:-0} ? 0 : 1)));
+		elif [ "${BUILD_KIND}" = release ]\
+		&&   [ "${PKG_BUILD_TYPE}" = native ];
+		then
+			_ppifs_stripfl=1;
+		else
+			_ppifs_stripfl=0;
+		fi;
+
+		if [ "${_ppifs_stripfl:-0}" -eq 1 ]; then
+			for _ppifs_bin_path in $(find "${_ppifs_tree_root}" -perm /a=x -type f); do
+				if objdump -sj .debug_frame -j .debug_info "${_ppifs_bin_path}" >/dev/null 2>&1; then
+					rtl_log_msg "pkg_strip" "${MSG_pkg_strip}" "${_ppifs_bin_path}";
+					if ! "${PKG_TARGET}-strip" "${_ppifs_bin_path}"; then
+						return 1;
+					fi;
+				fi;
+			done;
+		fi;
+	fi;
+	return 0;
+};
+
+pkg_install_files() {
+	local _pif_group_name="${1}" _pif_pkg_name="${2}" _pif_restart_at="${3}";
+
+	if ! pkgp_install_files\
+	|| ! pkgp_install_files_v2\
+	|| ! pkgp_install_files_perms\
+	|| ! pkgp_install_files_pkgconfig\
+	|| ! pkgp_install_files_strip;
+	then
+		return 1;
+	fi;
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_install_libs.subr b/subr.pkg/pkg_install_libs.subr
new file mode 100644
index 00000000..e81f3a11
--- /dev/null
+++ b/subr.pkg/pkg_install_libs.subr
@@ -0,0 +1,94 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkgp_install_libs_purge_la() {
+	local _ppilpl_la_path="";
+
+	for _ppilpl_la_path in $(find "${PKG_DESTDIR}" -type f -name \*.la); do
+		if ! rtl_fileop rm "${_ppilpl_la_path}"; then
+			return 1;
+		fi;
+	done;
+	return 0;
+};
+
+pkgp_install_libs_shared_link() {
+	local	_ppilsl_lib_name="${1}" _ppilsl_so_dir="${2}" _ppilsl_so_path="${3}"	\
+		_ppilsl_lib_link_path="${3%.so*}.lib.a" _ppilsl_fname="" _ppilsl_lib_link_tgt="";
+
+	if _ppilsl_lib_link_tgt="$(find "${_ppilsl_so_dir}" -name "${_ppilsl_lib_name%%.*}.*.lib.a" | sort | tail -1)"\
+	&& [ "${_ppilsl_lib_link_tgt:+1}" = 1 ]\
+	&& [ "${_ppilsl_lib_link_tgt}" != "${_ppilsl_lib_link_path}" ];
+	then
+		rtl_basename2 \$_ppilsl_lib_link_tgt \$_ppilsl_fname;
+
+		if ! rtl_fileop rm "${_ppilsl_lib_link_path}"\
+		|| ! rtl_fileop ln_symbolic "${_ppilsl_fname}" "${_ppilsl_lib_link_path}"; then
+			return 1;
+		fi;
+	fi;
+	return 0;
+};
+
+pkgp_install_libs_shared() {
+	local	_ppils_head="" _ppils_lib_dst_path="" _ppils_lib_name=""	\
+		_ppils_lib_src_path="" _ppils_so_dst_dir="" _ppils_so_src_path="";
+
+	if [ "${PKG_BUILD_TYPE}" != "host" ]; then
+		for _ppils_so_src_path in 		\
+			$(find	"${PKG_DESTDIR}"	\
+				\(  -name "*.so" -or -name "*.so.*" \) -print);
+		do
+			if [ "$(readlink -f "${_ppils_so_src_path}")" != "/dev/null" ]\
+			&& rtl_head "[0-9.]" "${_ppils_so_src_path##*.so}" \$_ppils_head\
+			&& [ "${_ppils_head:+1}" != 1 ]; then
+				case "${_ppils_so_src_path}" in
+				*.so)	_ppils_lib_src_path="${_ppils_so_src_path%%.so}.lib.a"; ;;
+				*.so.*)	_ppils_lib_src_path="${_ppils_so_src_path%%.so.*}.${_ppils_so_src_path##*.so.}.lib.a"; ;;
+				esac;
+
+				_ppils_so_dst_dir="${_ppils_so_src_path%/*}";
+				rtl_basename2 \$_ppils_lib_src_path \$_ppils_lib_name;
+				_ppils_lib_dst_path="${_ppils_so_dst_dir}/${_ppils_lib_name}";
+
+				if [ ! -L "${_ppils_lib_src_path}" ]\
+				&& [ ! -e "${_ppils_lib_dst_path}" ]; then
+					if ! (rtl_basename2 \$_ppils_so_src_path \$_ppils_fname;	\
+					      rtl_basename2 \$_ppils_lib_dst_path \$_ppils_fname_dst;	\
+					      rtl_dirname2 \$_ppils_so_src_path \$_ppils_dname;		\
+					      rtl_fileop cd "${_ppils_dname}" &&			\
+							perk -e "${_ppils_fname}"			|\
+								"${PKG_TARGET}-mdso"			\
+									-i "${_ppils_fname_dst}"	\
+									-n "${_ppils_fname}" -);
+					then
+						return 1;
+					fi;
+				fi;
+
+				if ! pkgp_install_libs_shared_link				\
+						"${_ppils_lib_name}" "${_ppils_so_dst_dir}"	\
+						"${_ppils_so_src_path}";
+				then
+					return 1;
+				fi;
+			fi;
+		done;
+	fi;
+
+	return 0;
+};
+
+pkg_install_libs() {
+	local _pil_group_name="${1}" _pil_pkg_name="${2}" _pil_restart_at="${3}";
+
+	if ! pkgp_install_libs_purge_la\
+	|| ! pkgp_install_libs_shared;
+	then
+		return 1;
+	fi;
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_install_make.subr b/subr.pkg/pkg_install_make.subr
new file mode 100644
index 00000000..a2291218
--- /dev/null
+++ b/subr.pkg/pkg_install_make.subr
@@ -0,0 +1,46 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_install_make() {
+	local	_pim_group_name="${1}" _pim_pkg_name="${2}" _pim_restart_at="${3}"
+		_pim_libtool="" _pim_rc=0 _pim_subdir="";
+
+	case "${PKG_LIBTOOL:-}" in
+	"")	_pim_libtool=""; ;;
+	none)	_pim_libtool=""; ;;
+	*)	_pim_libtool="${PKG_LIBTOOL}"; ;;
+	esac;
+
+	for _pim_subdir in ${PKG_MAKE_SUBDIRS:-:}; do
+		if [ "${_pim_subdir}" = ":" ]; then
+			_pim_subdir="";
+		fi;
+
+		if [ "${#_pim_libtool}" -gt 0 ]; then
+			export MAKE="make LIBTOOL=${_pim_libtool}";
+		fi;
+
+		rtl_run_cmd_unsplit "${PKG_MAKE}"				\
+			${PKG_MAKEFLAGS_INSTALL:-}				\
+			${PKG_MAKEFLAGS_INSTALL_EXTRA:-}			\
+			AR="${PKG_AR}" CC="${PKG_CC}" RANLIB="${PKG_RANLIB}"	\
+			"${PKG_RANLIB_INSTALL:+RANLIB=${PKG_RANLIB_INSTALL}}"	\
+			${_pim_libtool:+"LIBTOOL=${_pim_libtool}"}		\
+			"${PKG_MAKE_INSTALL_VNAME:-DESTDIR}=${PKG_DESTDIR}/"	\
+			${PKG_INSTALL_TARGET:-install}				\
+			${_pim_subdir:+-C "${_pim_subdir}"}; _pim_rc="${?}";
+
+		if [ "${#_pim_libtool}" -gt 0 ]; then
+			unset MAKE;
+		fi;
+
+		if [ "${_pim_rc}" -ne 0 ]; then
+			return 1;
+		fi;
+	done;
+
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_install_rpm.subr b/subr.pkg/pkg_install_rpm.subr
new file mode 100644
index 00000000..11cdfd85
--- /dev/null
+++ b/subr.pkg/pkg_install_rpm.subr
@@ -0,0 +1,66 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_install_rpm() {
+	local	_pir_group_name="${1}" _pir_pkg_name="${2}" _pir_restart_at="${3}"	\
+		_pir_pkg_url="" _pir_pkg_version_full="" _pir_pkg_version_rpm=""	\
+		_pir_rc=0;
+
+	if rtl_lmatch \$ARG_DIST "rpm" ","\
+	&& [ "${PKG_RPM_DISABLE:-0}" -eq 0 ]\
+	&& command which rpmbuild >/dev/null 2>&1;
+	then
+		if [ "${PKG_URL:+1}" = 1 ]; then
+			_pir_pkg_url="${PKG_URL%% *}"; _pir_pkg_version_full="${PKG_VERSION}"; _pir_pkg_version_rpm="${PKG_VERSION%%-*}";
+		elif [ "${PKG_URLS_GIT:+1}" = 1 ]; then
+			_pir_pkg_version_rpm="$(cd "${PKG_BASE_DIR}/${PKG_SUBDIR}" && git rev-parse HEAD)";
+			_pir_pkg_version_full="${_pir_pkg_version_rpm} ($(cd "${PKG_BASE_DIR}/${PKG_SUBDIR}" && git rev-parse --abbrev-ref HEAD))";
+			_pir_pkg_url="${PKG_URLS_GIT%% *}"; _pir_pkg_url="${_pir_pkg_url##*=}"; _pir_pkg_url="${_pir_pkg_url%%@*}";
+
+			if [ "${_pir_pkg_url#${DEFAULT_GITROOT_HEAD}}" != "${_pir_pkg_url}" ]; then
+				_pir_pkg_url="Unknown";
+			fi;
+		fi;
+
+		if ! rtl_fileop cp "${MIDIPIX_BUILD_PWD}/etc/package.spec"	\
+				"${PKG_BASE_DIR}/${PKG_NAME}-${_pir_pkg_version_rpm}.spec";
+		then
+			return 1;
+		else
+			while true; do
+				rpmbuild									\
+					-bb									\
+					--define="_tmppath ${BUILD_WORKDIR}"					\
+					--define="_topdir ${PREFIX_RPM}/${PKG_NAME}-${_pir_pkg_version_rpm}"	\
+					--define="pkg_destdir ${PKG_DESTDIR}"					\
+					--define="pkg_name ${PKG_NAME}"						\
+					--define="pkg_url ${_pir_pkg_url}"					\
+					--define="pkg_version_full ${_pir_pkg_version_full}"			\
+					--define="pkg_version_rpm ${_pir_pkg_version_rpm}"			\
+					--nodeps "${PKG_BASE_DIR}/${PKG_NAME}-${_pir_pkg_version_rpm}.spec";
+				_pir_rc="${?}";
+
+				if [ "${_pir_rc}" -eq 0 ]; then
+					break;
+				elif [ "${_pir_rc}" -eq 141 ]; then
+					continue;
+				else
+					return "${_pir_rc}";
+				fi;
+			done;
+
+			if ! find "${PREFIX_RPM}/${PKG_NAME}-${_pir_pkg_version_rpm}/RPMS"	\
+				-iname \*.rpm -exec cp -pP {} "${PREFIX_RPM}/" \;		\
+			|| ! rtl_fileop rm "${PREFIX_RPM}/${PKG_NAME}-${_pir_pkg_version_rpm}"	\
+			|| ! rtl_fileop cp "${PKG_BASE_DIR}/${PKG_NAME}-${_pir_pkg_version_rpm}.spec" "${PREFIX_RPM}/";
+			then
+				return 1;
+			fi;
+		fi;
+	fi;
+
+	return 0;
+};
+
+# vim:filetype=sh
diff --git a/subr.pkg/pkg_install_subdirs.subr b/subr.pkg/pkg_install_subdirs.subr
new file mode 100644
index 00000000..4ea68628
--- /dev/null
+++ b/subr.pkg/pkg_install_subdirs.subr
@@ -0,0 +1,26 @@
+#
+# set +o errexit -o noglob -o nounset is assumed.
+#
+
+pkg_install_subdirs() {
+	local	_pis_group_name="${1}" _pkg_name="${2}" _restart_at="${3}"	\
+		_pis_gspec="";
+
+	for _pis_gspec in 					\
+			"${PKG_INSTALL_FILES_DESTDIR:-}"	\
+			"${PKG_INSTALL_FILES_DESTDIR_EXTRA:-}"; do
+		if ! rtl_install "${PKG_DESTDIR}" ${_pis_gspec}; then
+			return 1;
+		fi;
+	done;
+
+	if [ "${PKG_PREFIX%/}" = "${PREFIX_NATIVE%/}" ]; then
+		if ! rtl_install "${PKG_DESTDIR}/${DEFAULT_TARGET}" ${PKG_INSTALL_FILES_DESTDIR}; then
+			return 1;
+		fi;
+	fi;
+
+	return 0;
+};
+
+# vim:filetype=sh