games-emulation/vice-x64-libretro
Versatile Commodore 8-bit Emulator as a libretro core
USE Flags
custom-cflags
Global: Build with user-specified CFLAGS (unsupported)
debug
Global: Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see http://www.gentoo.org/proj/en/qa/backtraces.xml