3.3 dbx90 options

-compatible
This permits dbx90 to debug code compiled by the NAG Fortran Compiler using the -compatible option.
-I pathname
Add pathname to the list of directories which are to be searched for module information (.mod) files and debug information (.g90) files. The current working directory is always searched first, then any directories named in -I options, then the compiler's library directory (usually ‘/usr/local/lib/NAG_Fortran’ or ‘/opt/NAG_Fortran/lib’)
-Qpath path
Set the compiler's library directory to path. This is only used for finding the module information (.mod) files for intrinsic modules.