vice

USE flags

• alsa - Add support for media-libs/alsa-lib (Advanced Linux Sound Architecture)
• debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
• doc - Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
• ethernet - Enable ethernet emulation
• ffmpeg - Enable ffmpeg/libav-based audio/video codec support
• flac - Add support for FLAC: Free Lossless Audio Codec
• gif - Add GIF image support
• gtk - Add support for x11-libs/gtk+ (The GIMP Toolkit)
• headless - Include the headless variant of the emulator
• lame - Prefer using LAME libraries for MP3 encoding support
• mpg123 - Enable mp3@64 cartridge support
• ogg - Add support for the Ogg container format (commonly used by Vorbis, Theora and flac)
• openmp - Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
• oss - Add support for OSS (Open Sound System)
• parport - Enable parallel port SID support
• pci - Enable PCI device discovery using sys-apps/pciutils
• png - Add support for libpng (PNG images)
• portaudio - Add support for the crossplatform portaudio audio API
• pulseaudio - Add sound server support via media-libs/libpulse (may be PulseAudio or PipeWire)
• sdl - Add support for Simple Direct Layer (media library)
• zlib - Add support for zlib (de)compression