Specifies what path information is stored for files when you use the -g compiler option.
Using -qfullpath causes the compiler to preserve the absolute (full) path name of source files specified with the -g option.
The relative path name of files is preserved when you use -qnofullpath.
-qfullpath is useful if the executable file was moved to another directory. If you specified -qnofullpath, the debugger would be unable to find the file unless you provide a search path in the debugger. Using -qfullpath would locate the file successfully.