mozilla@gentoo.org Gentoo Mozilla Team Disable official Firefox branding (icons, name) which are not binary-redistributable according to upstream. Use Clang compiler instead of GCC Build with user-specified compiler optimizations (-Os, -O0, -O1, -O2, -O3) from CFLAGS (unsupported) Disable EME (DRM plugin) cabability at build time Enable WebDriver support Use the cairo-gtk2 rendering engine Allow Gecko Media Plugins (binary blobs) to be automatically downloaded and kept up-to-date in user profiles 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 Add support for profile-guided optimization using gcc-4.5, for faster binaries. This option will double the compile time. Enable support for using rust compiler (experimental) Allow to disable screenshot extension in global profile Use the system-wide media-libs/dav1d and media-libs/libaom library instead of bundled. Use the system-wide x11-libs/cairo 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 dev-db/sqlite installation with secure-delete enabled Use the system-wide media-libs/libwebp instead of bundled.