pre_src_configure() {
	ebegin "VorteX: Configuring kernel"

	if grep -q "CONFIG_MODULE_SIG_KEY=" .config; then
		VORTEX_MODULE_SIG_KEY="$(grep "CONFIG_MODULE_SIG_KEY=" .config)"
	fi

	if test -n "${VORTEX_MENUCONFIG}"; then
		VORTEX_CONFIG="/var/cache/vortex-build/$(basename "${VORTEX_MENUCONFIG}")"
		if ! test -r "${VORTEX_CONFIG}"; then
			eerror "Unable to access config file ${VORTEX_CONFIG}"
			exit 1
		fi
		cp "${VORTEX_CONFIG}" .config
	else
		KERNEL_CONFIG_TEMP="$(mktemp -d)"
		cp -r "${S}/." "${KERNEL_CONFIG_TEMP}"

		pushd "${KERNEL_CONFIG_TEMP}" > /dev/null || die

		zcat /proc/config.gz > .config || die
		ARCH="$(tc-arch-kernel)" make oldconfig || die

		cp .config "${S}/.config"

		popd > /dev/null || die

		rm -r "${KERNEL_CONFIG_TEMP}"
	fi

	if test -n "${VORTEX_MODULE_SIG_KEY}"; then
		echo "${VORTEX_MODULE_SIG_KEY}"
		sed -i \
			-e "s#CONFIG_MODULE_SIG_KEY=.*#${VORTEX_MODULE_SIG_KEY}#g" \
			.config || die
	fi

	eend 0
}