README is missing clear instructions about how to successfully build this libretro core

[c0d3h4x0r]

Apparently the correct way to build this libretro core is not to simply run make, but to run make -f Makefile.libretro. Also, it would be very helpful to have clear instructions about how to successfully build debug and/or with symbols, for debugging purposes. I still haven't been able to get that to work at all, and I had to go scouring the web to find https://sites.google.com/site/o0kinghanco0o/mame_building_info to get at least some ideas of what the various variable were I needed to pass.

[c0d3h4x0r]

I finally ran across some helpful instructions on this page: https://docs.libretro.com/development/cores/core-specific/mame/

That URL should really be called out in the README.

[Cee123]

Oh my God, thank you. I've just been trying to get this to compile for the last hour. Using make -f Makefile.libretro seems to be working (so far). I also had to delete the language folder as I kept getting compilation errors with that. I had no issues with mame2015.