media-gfx/rawtherapee
A powerful cross-platform raw image processing program
USE Flags
jpegxl
* This flag is undocumented *
lto
Global: Add support for link-time optimizations (unsupported, use at your own risk).
openmp
Global: Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
system-libraw
* This flag is undocumented *
tcmalloc
Global: Use the dev-util/google-perftools libraries to replace the malloc() implementation with a possibly faster one.