Yea, don't use /std/ at all, it's developed for the linux version of libcod. Nobody here cares alot about libcod for Windows, because 1) it's not used on Server for most people and 2) it's annoying to mess with optimized assembly in IDA Pro.

https://github.com/kungfooman/libcod...r/gsc.cpp#L244

Just use a clear fs_game without any crap (/std/ stuff) in it.