Global USE flags

Flag	Description	Packages
doc	Install the full API documentation documentation. This takes over 200MB of extra disk space.	5

Category USE flags

dev-cpp

Flag	Description	Packages
shared	Build shared library instead of static library.	5

Local USE flags

app-emulation

proton-ge-custom-meta

Flag	Description
gnome
kde

dev-cpp

ftxui

Flag	Description
example

tgbot-cpp

Flag	Description
test

dev-libs

boost

Flag	Description
bzip2
context	Build and install the Boost.Context (and Boost.Fiber) library and all other Boost libraries that depend on it
debug	Build and install only the debug version of the Boost libraries. Only enable this flag if you're developing against boost.
icu
lzma
mpi
nls	Build libboost_locale. This library requires compatible C library interfaces, which might not be provided by uClibc or other embedded libraries.
numpy	Optionally build NumPy extensions when Boost.Python is enabled
python
stacktrace
tools	Build and install the boost tools (bcp, quickbook, inspect, wave)
zlib
zstd

net-proxy

v2ray

Flag	Description
tool	Build the additional tool: v2ctl

sci-libs

spglib

Flag	Description
openmp

sci-physics

lammps

Flag	Description
cuda	Enable cuda gpu computing support
hip	Enable hip gpu computing support
lammps-memalign	Enables the use of the posix_memalign() call instead of malloc() when large chunks or memory are allocated by LAMMPS. Aliengnment is on 16 byte boundaries.
opencl	Enable opencl gpu computing support

virtual

linux-sources

Flag	Description
firmware	Install linux kernel firmware

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