The `-d' flag to Dvips helps in tracking down certain errors. The
parameter to this flag is an integer that tells what errors are
currently being tracked. To track a certain class of debug messages,
simply provide the appropriate number given below; if you wish to track
multiple classes, sum the numbers of the classes you wish to track. To
track all classes, you can use -1. Another useful value is
3650, which tracks everything having to do with file searching
and opening.
Some of these debugging options are actually provided by Kpathsea (see section `Debugging' in Kpathsea).
The classes are:
stat calls