SlackBuildsOrg/games/gambatte-libretro

Gambatte is a Nintendo Game Boy/Game Boy Color video game system emulator that
can be used as a libretro core.

Gambatte is an accuracy-focused, open-source, cross-platform Game Boy Color
emulator written in C++. It is based on hundreds of corner case hardware tests,
as well as previous documentation and reverse engineering efforts.

To build the debugging symbols use:
  DEBUG=1 ./gambatte-libretro.SlackBuild