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• Information: euse -i lto
• Enable: euse -E lto
• Disable: euse -D lto

Global Description

Activate Link Time Optimizations on the compiler.

Local and Metadata Descriptions

Metadata Descriptions (metadata.xml)

• app-admin/kos: Enable link-time optimisation
• app-editors/emacs: Enable Link Time Optimization
• app-misc/clipboard: Enable Link Time Optimization (LTO)
• app-misc/phaethon: Compile with link-time optimization
• app-misc/xoreos-tools: Compile with link-time optimization
• app-misc/yafetch: Use Link Time Optimisation (LTO)
• cross-x86_64-unknown-linux-musl/gcc: Build using Link Time Optimizations (LTO). Note that GCC is always built with support for building other programs with LTO. This USE flag is for whether GCC itself is built and optimized with LTO.
• dev-lang/quickjs: Enable Link Time Optimizations (improves performance and decreases size of executables)
• dev-libs/pocl: Adds support for link time optimization
• dev-util/electron: Build with link time optimization enabled
• games-action/polymc: Enable link-time optimization
• games-arcade/taisei: Enable link time optimization
• games-emulation/mgba-libretro: Build using Link Time Optimizations (LTO)
• games-engines/xoreos: Compile with link-time optimization
• games-simulation/powdertoy: Enable Link Time Optimization, runs smoother with more particles
• games-strategy/spring: Enable link-time-optimizations (may break online gaming!)
• media-gfx/darktable: Enable link-time optimisations in the RawSpeed library
• media-libs/vapoursynth: Enable link-time optimization
• media-libs/x264: Build using Link Time Optimization, improves performance at the risk bugs may occur
• media-sound/carla: Build with lto support
• media-sound/ncmpcpp: Build with link-time optimisation
• media-video/mediaelch: Enable link-time-optimization. Increases link time.
• net-im/telegram-desktop: Enable Link Time Optimizations (build will take 20+G RAM and binary will be about 2G)
• net-libs/tdlib: Build with link time optimization (LTO)
• net-proxy/clash-rs: Enable Link Time Optimization
• sys-cluster/glusterfs: Build using Link Time Optimizations (LTO)
• sys-devel/gcc: Build using Link Time Optimizations (LTO). Note that GCC is always built with support for building other programs with LTO. This USE flag is for whether GCC itself is built and optimized with LTO.
• sys-devel/wild: Build with the experimental LTO plugin support
• sys-fs/e2fsck-static: Build with link time optimization (LTO)
• sys-kernel/cachyos-kernel-bin: Use the Clang ThinLTO build variant for better runtime performance
• www-client/brave-browser: Enable Link Time Optimization for better performance (increases build time significantly)
• www-client/chromium: Build with Link Time Optimizations (via clang's ThinLTO)
• www-client/firefox: Enable Link Time Optimization (LTO)

Local Descriptions (use.local.desc)

• app-misc/clipboard: Enable Link Time Optimization (LTO)
• dev-lang/quickjs: Enable Link Time Optimizations (improves performance and decreases size of executables)
• games-arcade/taisei: Enable link time optimization
• media-gfx/darktable: Enable link-time optimisations in the RawSpeed library
• media-video/mediaelch: Enable link-time-optimization. Increases link time.
• sys-devel/gcc: Build using Link Time Optimizations (LTO). Note that GCC is always built with support for building other programs with LTO. This USE flag is for whether GCC itself is built and optimized with LTO.
• sys-devel/wild: Build with the experimental LTO plugin support
• sys-fs/e2fsck-static: Build with link time optimization (LTO)

Packages Using This Flag