sorry, very outdated post i had made..but you are correct with xmr being cryptonight..the reason it still worked is because i was using the ccminer-cryptonight version..good eye. That would be why in the cmd it says "Ignoring algo switch, this program does only cryptonight." Again, I made this post last year so some things may be outdated but i believe what you need is found at the link below

https://github.com/tsiv/ccminer-cryptonight

Too bad I can't edit the post anymore to clarify some things, it took me a lot of trial and error when i originally tried setting this up over a year ago