qemu Enables support for Linux's Async IO Enable alsa output for sound emulation Adds support for braille displays using brltty Enable esound output for sound emulation Enables firmware device tree support Enable TLS support for the VNC console server Enable JPEG compression for the VNC console server Allows you to use KVM tracing Enable the ncurses-based console Enable PNG compression for the VNC console server Enable pulseaudio output for sound emulation Provides the qemu-ifup script for use with QEMU's built in bridging Enable the SDL-based console Enable TLS support for the VNC console server Enable VDE-based networking Enables support for Xen backends