depends -sub "INTEL" libdrm && depends xproto && depends xorg-server && depends util-macros && depends libpciaccess && if spell_ok mesalib; then persistent_read mesalib MESALIB_BUILD MESALIB_BUILD || true fi && if [[ $MESALIB_BUILD == dri ]]; then depends xf86driproto && depends -sub "DRI" mesalib "--enable-dri" else depends mesalib "--disable-dri" fi && optional_depends libxvmc \ "--enable-xvmc" \ "--disable-xvmc" \ "for XvMC support" && if is_depends_enabled $SPELL libxvmc; then depends dri2proto && depends xcb-util fi && optional_depends DEVICE-MANAGER "" "" "for udev-based monitor hotplug detection support"