How to make AutoCAD LISP working

I've bought a license of DraftSight Professional. I was an AutoCAD user so I've many LISP routines ... but the most part of them don't run. I can understand that some tuning could be necessary, but I don't find a way to debug it, no IDE interface, no error message! Could someone suggest a smart procedure to “adapt” AutoCAD LISP to DraftSight?

Thanks