#
# 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 textwidth=0