Mac software is scanned, but cannot be managed through the software license compliance module, which currently only supports Windows computers. Mac support for the compliance module is on the wish list, but we do not have a release date for this feature unfortunately. Depending on what you are trying to do, you could potentially build a report that lists the information you are after. A basic Mac software report was posted
here. You could write your license counts into the query to calculate compliance that way.
Scanning of Mac logs has been added to the wish list as well, but there's no release date for this feature at this time.