All USE Flags
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X - 1 package(s)
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clang - 1 package(s)
Use Clang compiler instead of GCC
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dbus - 1 package(s)
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debug - 1 package(s)
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eme-free - 1 package(s)
Disable EME (DRM plugin) capability at build time
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gmp-autoupdate - 1 package(s)
Allow Gecko Media Plugins (binary blobs) to be automatically
downloaded and kept up-to-date in user profiles
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hardened - 1 package(s)
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hwaccel - 1 package(s)
Force-enable hardware-accelerated rendering (Mozilla bug 594876)
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jack - 1 package(s)
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jpegxl - 1 package(s)
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jumbo-build - 1 package(s)
Enable unified build - combines source files to speed up build process, but requires more memory
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libproxy - 1 package(s)
Enable libproxy support
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openh264 - 1 package(s)
Use <pkg>media-libs/openh264</pkg> for H264 support
instead of downloading binary blob from Mozilla at runtime
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pgo - 1 package(s)
Add support for profile-guided optimization for faster binaries - this
option will double the compile time
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pulseaudio - 1 package(s)
Add sound server support via media-libs/libpulse (may be PulseAudio or
Pipewire, or apulse if installed)
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selinux - 2 package(s)
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sndio - 1 package(s)
Enable support for the <pkg>media-sound/sndio</pkg> backend
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system-av1 - 1 package(s)
Use the system-wide <pkg>media-libs/dav1d</pkg>
and <pkg>media-libs/libaom</pkg> library instead of bundled
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system-harfbuzz - 1 package(s)
Use the system-wide <pkg>media-libs/harfbuzz</pkg>
instead of bundled and <pkg>media-gfx/graphite2</pkg> in most cases
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system-icu - 1 package(s)
Use the system-wide <pkg>dev-libs/icu</pkg>
instead of bundled
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system-jpeg - 1 package(s)
Use the system-wide <pkg>media-libs/libjpeg-turbo</pkg>
instead of bundled
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system-libevent - 1 package(s)
Use the system-wide <pkg>dev-libs/libevent</pkg>
instead of bundled
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system-libvpx - 1 package(s)
Use the system-wide <pkg>media-libs/libvpx</pkg>
instead of bundled
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system-pipewire - 1 package(s)
Use system <pkg>media-video/pipewire</pkg> for WebRTC and screencast instead of bundled one
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system-png - 1 package(s)
Use the system-wide <pkg>media-libs/libpng</pkg>
instead of bundled (requires APNG patches)
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system-webp - 1 package(s)
Use the system-wide <pkg>media-libs/libwebp</pkg>
instead of bundled
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telemetry - 1 package(s)
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test - 1 package(s)
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valgrind - 1 package(s)
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wasm-sandbox - 1 package(s)
Sandbox certain third-party libraries through WebAssembly using RLBox
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wayland - 2 package(s)
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wifi - 1 package(s)
Enable necko-wifi for NetworkManager integration, and access point MAC
address scanning for better precision with opt-in geolocation services