Packages with the optimize use flag

app-text / pandoc : Conversion between markup formats

  • Enable -O1 optimizations (requires ~16GiB memory)

dev-lang / moarvm : A 6model-based VM for NQP and Rakudo Perl 6

  • Enable optimization via CFLAGS

games-board / stockfish : Free UCI chess engine, claimed to be the strongest in the world

  • Enable upstream -O3 optimizations (default enabled)

net-misc / sks : An OpenPGP keyserver which is decentralized with highly reliable synchronization

  • Enables bytecode optimization

sci-libs / opencascade : Development platform for CAD/CAE, 3D surface/solid modeling and data exchange

  • Don't clear allocated memory. Use optimized memory manager unless tbb USE flag is set.