How to get DMD to stop littering my source dir with .o files?

[Andrea Fontana via Digitalmars-d-learn]

On Monday, 26 October 2015 at 11:55:48 UTC, Shriramana Sharma 
wrote:
> The subject line says it all. Every time I compile a D file to 
> an executable I get an unwanted .o file and have to manually 
> clean up things. I'm using DMD 2.0.68.2.

Do you mean:
  -odobjdir      write object & library files to directory objdir

?