command info cant be recognized

I believe info is a command for lammps, but I think you should be able to add it to your source files. I could be wrong on that...

neighbor 0.3 bin == neighbor_skin 0.3

I posted a previous forum topic about this: https://www.cfdem.com/forums/info-command. Just download the info.cpp and info.h files from LAMMPS and then it's a simple matter of commenting out or deleting every line of code that produces an error when you try to compile it with LIGGGHTS.