mozilla@gentoo.org Gentoo Mozilla Team Use Clang compiler instead of GCC Disable EME (DRM plugin) capability at build time Force-enable hardware-accelerated rendering (Mozilla bug 594876) Enable Link Time Optimization (LTO). Requires Gold linker when using GCC or LDD linker when using Clang Use media-libs/openh264 for H.264 support instead of downloading binary blob from Mozilla at runtime Add support for profile-guided optimization using gcc-4.5, for faster binaries. This option will double the compile time. Enable support for the media-sound/sndio backend Use the system-wide media-libs/dav1d and media-libs/libaom library instead of bundled. Use the system-wide media-libs/harfbuzz and media-gfx/graphite2 instead of bundled. Use the system-wide dev-libs/icu instead of bundled. Use the system-wide media-libs/libjpeg-turbo instead of bundled. Use the system-wide dev-libs/libevent instead of bundled. Use the system-wide media-libs/libvpx instead of bundled. Use the system-wide media-libs/libpng instead of bundled (requires APNG patches) Use the system-wide media-libs/libwebp instead of bundled.