This option accepts a path (or list of paths separated by semicolons) that are searched by the assembler while attempting to locate an INCLUDE file. When multiple occurrences of this option are specified within a given scope, the effect is cumulative rather than destructive; successive occurrences add to the existing list rather than overwriting previous definitions. The more conventional spelling "I" can be used as an alias for the Fdi option.
┌────┬──────┬─────┬────┬──────────────────────────────────────────────────┐ │Type│Global│Group│File│Default │ ├────┼──────┼─────┼────┼──────────────────────────────────────────────────┤ │P │Yes │Yes │Yes │-Fdi:<IncDIR> │ └────┴──────┴─────┴────┴──────────────────────────────────────────────────┘