Building Core

[OceanMan15WasTaken]

I'm trying to use your guide on making a core, but when I use the command "emmake make -f Makefile platform="emscripten"" in Ubuntu, it says this: em++: error: Passing any of -msse, -msse2, -msse3, -mssse3, -msse4.1, -msse4.2, -mavx, -mfpu=neon flags also requires passing -msimd128!

I'm not sure what has happened here but it's not working. Do you have any clue why?