Building any stand-alone ddoc

[Tom Browder via Digitalmars-d-learn]

Given a single ddoc source file (with no D source), how can one
generate the default html output?

I have tried:  dmd -D -main ddoc.ddoc

and get nothing except __main.* files with no documentation.

Do I have to use CanDyDoc or bootDoc?  They seem like overkill for a
first effort.

Thanks.

-Tom