bp_core_add_root_component( string $slug )

function bp_core_add_root_component( $slug ) {
	$bp = buddypress();

	if ( empty( $bp->pages ) ) {
		$bp->pages = bp_core_get_directory_pages();
	}

	$match = false;

	// Check if the slug is registered in the $bp->pages global.
	foreach ( (array) $bp->pages as $key => $page ) {
		if ( $key == $slug || $page->slug == $slug ) {
			$match = true;
		}
	}

	// Maybe create the add_root array.
	if ( empty( $bp->add_root ) ) {
		$bp->add_root = array();
	}

	// If there was no match, add a page for this root component.
	if ( empty( $match ) ) {
		$add_root_items   = $bp->add_root;
		$add_root_items[] = $slug;
		$bp->add_root     = $add_root_items;
	}

	// Make sure that this component is registered as requiring a top-level directory.
	if ( isset( $bp->{$slug} ) ) {
		$bp->loaded_components[$bp->{$slug}->slug] = $bp->{$slug}->id;
		$bp->{$slug}->has_directory = true;
	}
}