build () {

    # subshell to avoid namespace pollution
    (
        . /etc/linuxpba/linuxpba.conf
        if [[ "$USE_SEDUTIL_PBA" = 1 ]]
        then
            add_binary "linuxpba"
            add_file "/usr/share/terminfo/l/linux"
        else
            add_binary "/usr/bin/linuxpba-arch" "/usr/bin/linuxpba"
            add_binary "getpasswd"
            add_binary "sedutil-cli"
            if [[ -e "/etc/linuxpba/keyring.luks" ]]
            then
                add_file "/etc/linuxpba/linuxpba.conf"
                [[ -e "/usr/bin/ykchalresp" ]] && add_binary "ykchalresp"
                [[ -e "/usr/bin/ykinfo" ]] && add_binary "ykinfo"
                add_binary "cryptsetup"
                add_binary "dmsetup"
                add_file "/etc/linuxpba/keyring.luks"
                add_file "/usr/lib/udev/rules.d/10-dm.rules"
                add_file "/usr/lib/udev/rules.d/13-dm-disk.rules"
                add_file "/usr/lib/udev/rules.d/95-dm-notify.rules"
                add_file "/usr/lib/initcpio/udev/11-dm-initramfs.rules" "/usr/lib/udev/rules.d/11-dm-initramfs.rules"
            fi
        fi
    ) && add_runscript
}

help () {
cat <<HELPEOF
Linux TCG Opal 2.0 PBA.
HELPEOF
}