The which command prints the full qualification of a specified name. It is valid only in native mode.
Print full qualification of name.
Print full qualification of type.
name is the name of loadable object that is in scope, for example, a variable, function, class template, or function template.
type is the name of a type.
–n displays the full qualification of a non-type. It is not necessary to specify –n; this is the default if you type the which command with no options.
–t displays the full qualification of a type.
–m forces macro lookup even if the dbxenv variable macro_expand is set to off.
+m defeats macro lookup so that any symbols that might have been shadowed by macros are found instead.